Lim gasket 3800

Gaskets & Adhesives. Gauges & Gauge Pods. Ignition. Intercooling. Pulleys & Belts. Stage Kits Supercharger Parts & Kits. Suspension. Transmission & Drivetrain ... ZZP 3800 M90 Blower Dress Up Kit. $59.99 $59.99. Quick shop. Rebuilt M90 Snout. from $200.00 from $200.00. Quick shop. M90 Block Off Plate. $49.99 $49.99. Quick shop.

NEW PARTS NEEDED: * Supercharger and Lower Intake manifold kits. I like the Felpro PermaDry LIM gaskets. Check the fit for your vehicle. Note that LIM gaskets …The head gasket is a piece of plastic that forms a seal between a vehicle’s engine and head. It prevents coolant and oil from mixing as it enters the engine. If you notice signs of...The intake gaskets weren't updated to Aluminum until after (~2012) all 3800's stopped being produced (2008). Therefore, no 3800 ever cane with them originally. If you see black edge on your LIM gaskets, near the injectors, they haven't been upgraded to aluminum versions (some cheaper knock offs now exist, along with AC Delco ones).3800 series II, how likely to need LIM gasket. Thread starter CBR.worm; Start date ...As bad as my LIM gasket was I'm sure fluid could have gotten sucked into the intake chambers though, because the gasket pretty much fell apart in my hands when I removed it. ... A forum community dedicated to all General Motors makes and models owners and enthusiasts running the 3800 series engine. Come join the discussion about …I have a 1999 Monte Carlo Z34 with the 3800 Series 2 with 85k on it. Over the past 3k miles it has lost about 1 gallon of coolant, no leaks on the driveway at all so im sure I need to change the UIM. I am also going to pull the LIM and replcae the gaskets with the new GM aluminum ones...i figure why not.Posted May 24, 2015. I came across an issue recently which has left me with some questions. My friend has a 2001 Impala 3800. We replaced the motor when he got it and replaced many gaskets including from the LIM up. This was a handful of years ago and used plastic gaskets. I later did another LIM gasket job on a 97 LeSabre when my …I'm looking on eBay for a full gasket set in case I need more gaskets. They make reference to vin K. ... 86 GT Convertable 3800 IP: Logged. PFF. System Bot. Justinbart Member . Posts: 3259 From: Flint, MI Registered: Sep 2009. Feedback score: N/A Leave feedback: Total ratings: 119 Rate this member: Report this Post 08-19-2012 08:01 PM ...

The first most complete 3800 torque spec guide on the net. Camshaft Bolt: 74 ft/lbs + 90 degrees angle torque Camshaft thrust plate: 132 in/lbs (T30 torx) Front cover bolts: 15 ft/lbs + 40 degrees angle torque Oil pan bolts: 125 in/lbs ... Just be sure to put a glob of RTV at the corners of the LIM gaskets, and back-bottom corners of the front ...2) measure pressure with key on, engine running. (should be 40-50 (lower than engine off value) 3) goose throttle and watch pressure. (should maintain pressure, not decrease) 4) disconnect vacuum to fuel regulator, measure pressure. (should immediately increase and hold) 5) reattach vacuum to fuel regulator, shut engine off.I have only replaced my elbows when doing LIM gaskets, when the LIM wasn't bolted down, so i had some wiggle room, so I'm not sure how hard of a job it is to do when everything is bolted together. ... 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen 1997 Corvette | 55k | Silver Metallic | Z06 wheels | Date …31,307. Location. MA, Mittelfranken.de. Oct 19, 2020. #4. Do the LIM gaskets with the latest design and change the upper plenum and EGR chimney (part of the plenum kit) to repair this. Do not use sealers. Change the plastic elbows out for aluminum ones but use OE o rings on them.I know there are some other threads on this topic, I did not want to hijack them though. I've had issues with my car not wanting to start on occasion when it was warm, or if I used the AC while it was idling. After about 2-3 years without being able to find out what the problem was, I'm pretty...Location. Illinois. Oct 25, 2010. #1. It finally happened. 1999 Park Avenue, 87,000 miles. Took it in for the rear brake pads, and while the mechanic was driving it to check the brakes, the coolant passage through the intake manifold failed. He barely got it back to the shop before the plugs finally fouled out from the coolant that got sucked ...

Update: Some offers mentioned below are no longer available. View the current offers here. When flying to the US from my home base in Madrid, Spain, I usuall... Update: Some offers...24 - Prep the bottom of the supercharger like you did the heads, and the LIM, near perfection. Clean up the LIM one last time before laying down new gaskets. Now, put new coolant O-Rings and the new S/C gasket onto the LIM. Place carefully. Use copper spray if you would like. Place the supercharger down carefully onto the new S/C gasket.Regardless of which one you end up using, replace the LIM gaskets and coolant elbows before installing in the car! Valve cover gaskets and ruthenium spark plugs are also a good idea. The later Lumina retained the first-gen W-body chassis, and the 3800 was an option on it (replacing the DOHC LQ1) The DOHC LQ1 was available on all first-gen W ...PART 4 of the PLENUM UPGRADE series. Part of the IZZY's GARAGE, "Save your Sanity (maybe even your marriage)" Official Series.Follow this step-by-step ...CostHelper estimates that a gasket head replacement can take between five and eight hours, although the time varies based on the type of car. In addition, the cylinder head might n...

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2006 GP base No more wet frame rail. No drips. No leaks around the repair areas as well as coolant temp sensor or T-stat. Still smelling hot coolant and the coolant in the reservoir is slowly dropping. Oil shows no sign of coolant and vice-versa. Any ideas?? Thanks.It runs really good except at idle, it doesn’t idle smooth and runs at around 800-900 rpm. I pull the codes and get p0171 – Bank 1 too lean. The fuel trim is staying around 15-20% and doesn’t fluctuate with higher RPMs. The upstream o2 sensor is reading around .05 and not really fluctuating, so I immediately suspect a vacuum leak.The UIM(upper intake manifold) gasket is the one between the LIM and UIM. The 2.8/3.1 V6 engines are notorious for LIM gasket failure. In a nut shell most GM V-engines have LIM gasket issues. GM just went a little cheap on the gasket design. The UIM gasket is not the issue so much on the 3800 seriesII as it is the UIM plenum itself that fails.I had it in the shop for a radiator and water pump replacment back in January so I had them replace the LIM gaskets as well. It ran like a champ after that, but I wish I had waited because it blew the head gasket 8 months/12k miles later. ... but I wish I had waited because it blew the head gasket 8 months/12k miles later. The estimate to ...I read about a recurring problem somewhere with a LMI or LIM gasket/seal causing this - is anyone familiar with this? will probably have a garage do the work - would like to know what to expect tho beforehand and not get ripped off. I have a 96 3800 V6 Bonneville, they are notorious for the upper & lower plastic intake gaskets going out ...

A road sign brought down by the winds of Hurricane Grace straddles one lane of a highway in Tulum, Quintana Roo state, Mexico, Thursday, Aug. 19, 2021. The …Change Upper Intake Manifold (UIM) and Lower Intake Manifold (LIM) gaskets Disclaimer: Performing repairs on automobiles can result in damage to property, personal injury, or ... Login Register: ... 3800 Series II Vin K Upper Intake Information: Jrs3800. 0. 92788. Wed May 28, 2008 7:28 pm. Jrs3800. Change Valve Cover Gaskets: …Supercharged 3800 Series 2 Transverse mount engines. Changing the Lower Intake Manifold (LIM) gaskets and Supercharger This is a post for advanced... Log In. GM 3800 Service Tips, Techniques, and Advice ...The water pump + elbows were previously replaced a year ago, along with the UIM + LIM gaskets. Will replace the water pump again with a lifetime version and hope that fixes it. ... which you should remove and put new gasket on. The 3800 oil pumps cant be primed like others which have a prime port, so the factory shop manual says to …Buy ACDelco GM Original Equipment 89017825 Intake Manifold Gasket Kit with Gaskets and Seals: ... 5.0 out of 5 stars Better then felpro lim set. Reviewed in the United States on October 5, 2022. ... I would not replace the gaskets on any GM Series 2 or Series 3 3800 motor without using these specific ones. Read more. 2 people found this helpful ...Michigan, Thumb's Up! Nov 30, 2010. #1. I'm getting ready for an UIM & LIM gasket replacement on my 1999 3800 SII. I am going to be acquiring the GM aluminum framed gasket pair @ $65 (dealer), but find myself wondering about all of the others that are shown in the PermaDryPlus kit at iNeedParts.com. The sellers aren't inclined to sell those ...I'm starting to get together what I need to replace the UIM, LIM gaskets & intake manifold. When I first bought this car from my mother in law a few years ago I came across this site as a matter of educating myself on the details of what I just bought. I knew the GM 3800 was solid & really liked the car. At that time I bookmarked a few links on ...a) non-Dexcool Series I 3800 motors did not show nearly the same failure rate with nylon gaskets. b) it has been suggested that the % 2EHA in the dead ports gets consumed as it is used to protect the neighbouring aluminum. Water and ethylene glycol are in large concentrations and not consumed.I gave it LIM gaskets a while back, though the old ones were still good. Oh, well - RIP. The L67 I have for the project car supposedly has about 130k. Jay Maechtlen ... Personally my max 3800 miles were 265k on a 89 buick my folks had, then my sister and finally it was my work beater.The ATP have been very good so why mess with with what works, use the aluminum frame GM LIM gaskets and its a done deal permanently. M. Merkava_4. Thread starter Joined Jan 30, 2007 Messages 17,501 Location Clovis, CA. Feb 25, 2017 ... The GM 3800 LIM aluminum gaskets ARE available from ZZPerformance; ...GM 3800 Service Tips, Techniques, and Advice. Both the dead end and the thru passage can be corroded, mostly on cars older than 15 yrs or cars that not had the coolant changed on a regular basis. Shallow corroding can be handled by the LIM gasket. More than that you can rub in some permatex Ult ….I know there are some other threads on this topic, I did not want to hijack them though. I've had issues with my car not wanting to start on occasion when it was warm, or if I used the AC while it was idling. After about 2-3 years without being able to find out what the problem was, I'm pretty...

I have a video recorded of someone changing it step by step, but they don't include all the gaskets and stuff you'll need. LIM Gasket 2x Coolant Elbows Supercharger Gasket (?) I know you need the tube of stuff for the LIM gasket too, whatever it's called. Anything else? Should I get Felpro gaskets, or should I grab the LIM gasket on ZZP?

Diagnostic Tech. regarding 3.8l, blue locktite. Must use wire wheel to clean threads, not torque to yeild if not torqued too strong. If not sure, use new bolts. A must in this procedure, use grey silicone called "the right stuff" sets in a new york second. Have a old thread where you see where I put it.Jun 3, 2011 · 3) Add distilled water (buy bulk from a supermarket) through the thermostat housing until full. 4) suction out from lower rad hose. 5) repeat steps 3-4 until the washings come clear. 6) fill completely with distilled water, connect rad hose and thermostat housing. Jun 3, 2011 · How to: Remove a 3800 Series II motor - V6 F-Body.com ... If I know the size of it then I can get the Felpro 2nd design LIM gasket kit, instead of paying like 20 more ... LIM Gaskets. 1113 Views 5 Replies 5 Participants Last post by SleeperGT, Dec 18, 2010 Jump to Latest B. blh72 Discussion starter ...IIRC the list price for the 3100/3400 gasket set is $130 or so from NAPA. I would imagine the 3800 set to be similarly expensive. Order it from NAPA and make sure to request the aluminum-backed one. They probably keep them in stock so it wouldn't be an issue for them to open the package to verify. It's not a Dex-Cool problem, BTW.Nov 12, 2011 · Replacing UIM, UIM Gasket, and LIM Gasket. Jump to Latest Follow 241 - 255 of 255 Posts. 1 13 of 13 Go to page ... Makes sure you install the 2 O-ring seals [at the back] on the LIM, between the LIM and Supercharger. Re-fitted the Supercharger and Gasket, and also torqued the bolts accordingly [and in sequence] Replace the O-Ring on the Tensioner Fitting, [I also applied Gasket Cement on and around the Seal] Re-installed the Tensioner BracketSounds like it could be leaky lower intake gaskets. This has been an on-going problem (very common on the 3.1 & 3.4's). When the lower intake gaskets get old, the seals around coolant ports begins to seep a bit. And when the engine cools, the oil near these ports gets sucked into the coolant as it cools.

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3800 series II, how likely to need LIM gasket. Thread starter CBR.worm; Start date ...Coolant coming out of the LIM is a different story and probably means your LIM gaskets must be changed. If you mean water in your UIM , that could mean the plastic walls around the EGR have eroded or the coolant ports at the throttle body/UIM junction have collapsed.Post subject: Where to get aluminum LIM gaskets. Posted: Mon Aug 15, 2016 7:06 pm . Posts like an LN3: Joined: Thu Feb 18, 2010 4:56 pm Posts: 565 Location: Savannah, Georgia Year and Trim: 2001 SSEi Need to get these lower intake gaskets replaced tomorrow. Are there any auto parts stores that carry these parts?Parts List: UIM kit with included gaskets (it might include the elbows) LIM gaskets from a GM dealer (make sure they're reinforced) Coolant elbows. Throttle body gasket. Silicone grease or dielectric grease. Permatex 2B. Distilled water and new Dexcool. I'll post more info as I think of it.The UIM(upper intake manifold) gasket is the one between the LIM and UIM. The 2.8/3.1 V6 engines are notorious for LIM gasket failure. In a nut shell most GM V-engines have LIM gasket issues. GM just went a little cheap on the gasket design. The UIM gasket is not the issue so much on the 3800 seriesII as it is the UIM plenum itself that fails.Jul 29, 2012 · LIM and UIM gaskets. Jump to Latest Follow 1 - 4 of 4 Posts. G. Goofyexponent · Registered. Joined Jul 28, 2012 · 11 Posts. Discussion Starter ... Nighttime incontinence is a psychological quagmire on anyone's mental health. This podcast episode talks frankly about pooping the bed. Incontinence While Sleeping — or “pooping” t...The LIM gasket is between the lower intake plenum and the heads. The UIM is the paper gasket between the lower intake plenum and the supercharger. ... 2004 Bonneville GXP | 60k | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen 1997 Corvette | 55k | Silver Metallic | Z06 wheels | Date-night … Great info on the aluminum frame gaskets! I had just gotten the LIM on a 3800 the same morning i read they had them for the 3800 in dealers. Got new aluminum gaskets and removed LIM, it well worth the extra trouble. If they are available for this engine i would use them. Great info on the aluminum frame gaskets! I had just gotten the LIM on a 3800 the same morning i read they had them for the 3800 in dealers. Got new aluminum gaskets and removed LIM, it well worth the extra trouble. If they are available for this engine i would use them. ….

If the gaskets are leaking externally, change them NOW!!! Bar's Leaks will be worse than nothing since it's giving a false sense of security. Also, it won't work with the design of the LIM gaskets. Folks have tried, and purchased themselves another 3800 as a result. For the oil pressure, the gauge and sender are known liars.Feb 16, 2010 · 24 posts · Joined 2009. #1 · Feb 16, 2010. I have a 98 Old w/3800. I replaced the upper plenum at 39k miles due to the upper plenum leaking coolant into the LIM. Now at 139,00k it's leaking coolant again. I pulled the lower plenum and am changing the gaskets, cleaned the LIM. the mating faces on the LIM and head aren't pitted or corroded. wow thats a long time for lim gaskets. last time out i was done in less then 2 hrs. that gas leak. pull the fuel rail back off, check the o rings for damage. replace if needed. clean the holes in the heads if you didnt already, oil the new o rings before rolling them on the injectors, then re oil before you push them back in the heads.Dark Mode; Light Mode; menu Log inLIM gasket? Jump to Latest Follow 717 views 3 replies 2 participants last post by BillBoost37 May 7, 2009. B. billberry12 Discussion starter 5 posts ...When our beautiful '95 Regal started idling rough and dribbling coolant underneath the throttle body, I feared a head gasket issue. Research led me to believe we probably had a LIM/UIM gasket or warped plenum issue. After reading a bunch more, I decided to take it all apart and do it right. So, f...I replaced the lim and uim gaskets and valve cover gaskets on my 04 Monte Carlo with the 3800, ran good lastnight. Today low oil pressure light came on when the car warmed up. Any ideas of anything I could have messed up or broke?Seems straight forward enough, oe LIM gaskets are a well known weak point on the 3800. However, crawling back under, i noticed the power steering pump was covered in oil as well, behind the pulley. As was the sensor/sending unit right by the oil filter extension.LIM and UIM Gasket Replacement Questions. Tags l67 lim gaskets supercharged. Jump to Latest Follow 21 - 25 of 25 Posts. 1 2. N. nhengineer · ...Before I changed my UIM and LIM gaskets, there was oil between the fuel injectors on the LIM in those little valleys. ... A forum community dedicated to all General Motors makes and models owners and enthusiasts running the 3800 series engine. Come join the discussion about performance, modifications, classifieds, troubleshooting, builds, … Lim gasket 3800, Anatomy of a Lower Intake Manifold (LIM) gasket fail: causes and symptoms. The most common failures of the 3800 engine are spark plugs, wires, MAF sensors, ignition coils, plastic intake manifolds (NA engines only), and lower intake manifold (LIM) gaskets. This post discusses the causes and symptoms of a LIM failure., Buick lesabre with a 3.8 liter came in with an antifreeze Leek, customer stated the water pump had failed. after a quick description over the phone i had a ..., I'm just finishing up my own UIM/LIM job. I installed the aluminum framed LIM gaskets, an APN UIM (sleeved). For the most part, things went smoothly like clockwork. Just slow. I'm the kind of guy who takes a day to make sure gasket surfaces are clean and oil free. Hey, it's my time and no..., GM 3800 Service Tips, Techniques, and Advice. Both the dead end and the thru passage can be corroded, mostly on cars older than 15 yrs or cars that not had the coolant changed on a regular basis. Shallow corroding can be handled by the LIM gasket. More than that you can rub in some permatex Ult …., The 3800 & 4.3L V6 are excellent engines, Intake gaskets are a known issue on both & you never install one without changing them. Same thing as performing a leak down test & setting valve lash on a J-series Honda or Replacing the Bypass Hose & resealing the valley plate on a Toyota MZ engine before install., Jun 3, 2011 · How to: Remove a 3800 Series II motor - V6 F-Body.com ... If I know the size of it then I can get the Felpro 2nd design LIM gasket kit, instead of paying like 20 more ... , ported LIM GM aluminum LIM gaskets GM LS6 90# valve springs ZZP custom 3/8" oil restricted pushrods ZZP throttle body heat shield ... A forum community dedicated to all General Motors makes and models owners and enthusiasts running the 3800 series engine. Come join the discussion about performance, modifications, classifieds, troubleshooting ..., Pan is steel, and looks to be held on by a frame between bolts and the pan itself. Up top, looks like it's also coming from the valley seal for the LIM. Coming from the corner nearest firewall on front side of motor, and making it's way down. Seems straight forward enough, oe LIM gaskets are a well known weak point on the 3800., The average cost to repair an oil gasket leak is $396 to $511 if the oil pan requires resealing, and $249 to $348 if the valve cover gaskets require replacement. RepairPal.com base..., l67 lim gaskets supercharged. Jump to Latest Follow 21 - 25 of 25 Posts. 1 2. N. nhengineer · Registered. Joined ..., Tulum offers plenty of options for traveling the last 7 miles to the lagoon, from bike and scooter rentals to taxi rides. Cancun to Laguna Kaan Luum Distance: 87 miles …, I'm looking on eBay for a full gasket set in case I need more gaskets. They make reference to vin K. ... 86 GT Convertable 3800 IP: Logged. PFF. System Bot. Justinbart Member . Posts: 3259 From: Flint, MI Registered: Sep 2009. Feedback score: N/A Leave feedback: Total ratings: 119 Rate this member: Report this Post 08-19-2012 08:01 PM ..., In addition to the LIM gaskets you also get hit for about about $30 for the set of two ZZP Gorlock gaskets. " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Powerlog manifold, Northstar TB, LS1 MAF, 3" Flotech Afterburner Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w ..., Hey everyone, I'm new here as one might guess ;) As with probably many "just registered" users, I have a question as I'm in the middle of doing the LIM gasket job on a 1997 Firebird with a RWD 3800 S2. I have done these on FWD cars and it wasn't nearly as difficult to remove the actual LIM. On..., Business, Economics, and Finance. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. Crypto, Hello, I've been around here awhile but haven't been active due to my Firebird being out in the sidelines for the winter, and is in for a whole new suspension. I recently purchased a 2002 Monte Carlo SS from the original owner. I'm pretty blown away so far as to how much this car is really..., Tulum offers plenty of options for traveling the last 7 miles to the lagoon, from bike and scooter rentals to taxi rides. Cancun to Laguna Kaan Luum Distance: 87 miles …, No start - after Intake Gasket replacement. I dragged home a 99 Grand Prix with a 3800, the car has 20010 miles on it. Cylinder #1 was hydro locked so I replaced the upeer and lower intake gaskets, along with the coolant bypass elbow. After installing everything including new spark plugs the car will not start., I guess since LIM gaskets could be due already (some coolant smell). Thanks . ... A forum community dedicated to all General Motors makes and models owners and enthusiasts running the 3800 series engine. Come join the discussion about performance, modifications, classifieds, troubleshooting, builds, tunes, superchargers, maintenance, and more!, Coolant coming out of the LIM is a different story and probably means your LIM gaskets must be changed. ... A forum community dedicated to all General Motors makes and models owners and enthusiasts running the 3800 series engine. Come join the discussion about performance, modifications, classifieds, troubleshooting, builds, tunes ..., Rick. I have some photos from the last set of LIM gaskets I did . if replacing the. LIM gaskets get the aluminium over the plastic framed gaskets . you can see in the pic's the passenger side gasket the plastic frame has broken allowing the seal to move and oil passes into the cooling system under pressure. R., No start - after Intake Gasket replacement. I dragged home a 99 Grand Prix with a 3800, the car has 20010 miles on it. Cylinder #1 was hydro locked so I replaced the upeer and lower intake gaskets, along with the coolant bypass elbow. After installing everything including new spark plugs the car will not start., How hard are head gaskets on an L67? Jump to Latest Follow 5K views 5 replies 3 participants last post by mygm Sep 19, 2008. M. matthimself456 Discussion starter 7 posts ..., Head gasket repairs can be expensive, but the cost can vary significantly depending on the cause of the issue and the type of repair needed. Knowing what factors impact the cost of..., Oct 11, 2011 · 2) measure pressure with key on, engine running. (should be 40-50 (lower than engine off value) 3) goose throttle and watch pressure. (should maintain pressure, not decrease) 4) disconnect vacuum to fuel regulator, measure pressure. (should immediately increase and hold) 5) reattach vacuum to fuel regulator, shut engine off. , Location. Illinois. Oct 25, 2010. #1. It finally happened. 1999 Park Avenue, 87,000 miles. Took it in for the rear brake pads, and while the mechanic was driving it to check the brakes, the coolant passage through the intake manifold failed. He barely got it back to the shop before the plugs finally fouled out from the coolant that got sucked ..., lower intake manifold removal. Hi everyone. I currently am working on a 1996 Camaro 3800 with a cooling issue. I took the UIM off and have taken all the bolts of the LIM out but I cannot get it to break loose. I have tapped it with a rubber mallet and used a prybar under the thermostat area., Gaskets & Adhesives. Gauges & Gauge Pods. Ignition. Intercooling. Pulleys & Belts. Stage Kits Supercharger Parts & Kits. Suspension. Transmission & Drivetrain ... ZZP 3800 M90 Blower Dress Up Kit. $59.99 $59.99. Quick shop. Rebuilt M90 Snout. from $200.00 from $200.00. Quick shop. M90 Block Off Plate. $49.99 $49.99. Quick shop., Phenolic Intercooler Gen 3 Gen 5 L67 L32 Eaton M90 SuperCharger 3800 3.8 Liter. Machining 1 video by sseilmnop - Photobucket Machining 2 video by sseilmnop - Photobucket ... hoses, machined LIM, gaskets. 2009 Pontiac G8 GT - Solo Performance Cats & Mach Shorty Catback with J-pipes, AFE Power CAI, Dyno tune... 334rwhp …, MN. Jun 19, 2006. #5. The plastic melting is one issue. Directly related to an air bubble in the system IMO, the other is the lower intake gaskets getting destroyed from unchanged coolant. Both are avoidable, and fairly easy to fix. The 3800 can take coolant leaks better then any other engine I've seen., First, one group of corrosion inhibitors (2-ethylhexanoate and ethylhexanoic acid) soften many plastics such as nylon-66 and silicone rubber. Nylon-66 was used as the carrier in lower intake manifold (LIM) gaskets up to and including the 1999 model year cars. (The actual seals for the coolant and air intake passages are formed on top of the ..., First timer replacing LIM gaskets (2002 Buick Lesabre) ... A forum community dedicated to all General Motors makes and models owners and enthusiasts running the 3800 series engine. Come join the discussion about performance, modifications, classifieds, troubleshooting, builds, tunes, superchargers, maintenance, and more!, LIM and UIM gaskets. Jump to Latest Follow 1 - 4 of 4 Posts. G. Goofyexponent · Registered. Joined Jul 28, 2012 · 11 Posts. Discussion Starter ...