Crazy K Posted November 26, 2005 Report Share Posted November 26, 2005 lol If you really don't want to change the distributor drive gasket, at least go pay 95 cents for an old style paper distributor gasket part number 12665 from autozone. or look one up for a 78 chevy impala (any 70's GM v6) The paper plenum gasket are too thin, on the 91+ plenum you can't hold the plenum down because the the bolts torque against the the lower intake by torquing through the metal jacket they are mounted through. No torque is actually applied against the plenum if the plenum is not held high enough(the gaskets job). -Ken P.S. the metal type are reusable if in good shape, according to service manuals. Quote Link to comment Share on other sites More sharing options...
R Dubya Posted November 26, 2005 Report Share Posted November 26, 2005 you know autozone rents balancer pullers for nothing. Quote Link to comment Share on other sites More sharing options...
GutlessSupreme Posted November 29, 2005 Author Report Share Posted November 29, 2005 http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=8016914466&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1 WINNAR!!!!!!!! Quote Link to comment Share on other sites More sharing options...
chadz34 Posted November 29, 2005 Report Share Posted November 29, 2005 Congratulations, that's a bargain. Quote Link to comment Share on other sites More sharing options...
J Posted November 29, 2005 Report Share Posted November 29, 2005 - you cannot use the '88-'90 plenum (like a TGP plenum) on a '91+ LIM. GOOD TO KNOW! :oops: Quote Link to comment Share on other sites More sharing options...
gp90se Posted November 29, 2005 Report Share Posted November 29, 2005 I gotta ask, if the 91+ plenum fits on an 88-90 N/A 3.1 LIM (with the right bolts) why cant ya on a tgp? Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted November 29, 2005 Report Share Posted November 29, 2005 you can use a '91 plenum on a '90 LIM, NA or TGP. you'd have to drill & tap the plenum for a AIT though. Quote Link to comment Share on other sites More sharing options...
GutlessSupreme Posted November 29, 2005 Author Report Share Posted November 29, 2005 the holes for the bolts on the '88-'90 plenum are smaller, because they were just the bolts. '91+ got spiffy sleves and stuff that fit perfectly into bigger holes in the plenum. kinda wish i had though (even though it doesn't really make a difference). And the pre-'91 bolts won't bolt into the '91+ intake manifold. Quote Link to comment Share on other sites More sharing options...
gp90se Posted November 29, 2005 Report Share Posted November 29, 2005 I had a 92 plenum on the 90 3.1 for a little while, with the newer bolts it fit pretty good, but okey Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted November 29, 2005 Report Share Posted November 29, 2005 you must have had a '91+ LIM on the '90 engine? because no way are the '91 bolts going to thread into the '88-'90 plenum. the bolts are just way to small. i had a '91 plenum on a '90 engine for a little while, but i had to use the older bolts. Quote Link to comment Share on other sites More sharing options...
gp90se Posted November 29, 2005 Report Share Posted November 29, 2005 thats a 92 lumina plenum melted onto the 90 grand prix Quote Link to comment Share on other sites More sharing options...
J Posted November 29, 2005 Report Share Posted November 29, 2005 either way, good to know. I would hav been pissed when i found that out the hard way :oops: Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted November 29, 2005 Report Share Posted November 29, 2005 http://i15.photobucket.com/albums/a387/camaro75lt/fireengine.jpg thats a 92 lumina plenum melted onto the 90 grand prix ouch! those look the the older bolts to me, but it's hard to tell. Quote Link to comment Share on other sites More sharing options...
gp90se Posted November 29, 2005 Report Share Posted November 29, 2005 if I get the chance tomorrow, i have all the bolts from the intake/motor, ill double check which 1s I have Quote Link to comment Share on other sites More sharing options...
GutlessSupreme Posted November 29, 2005 Author Report Share Posted November 29, 2005 http://i15.photobucket.com/albums/a387/camaro75lt/fireengine.jpg thats a 92 lumina plenum melted onto the 90 grand prix ouch! those look the the older bolts to me, but it's hard to tell. looks like it to me too. Quote Link to comment Share on other sites More sharing options...
GP1138 Posted November 29, 2005 Report Share Posted November 29, 2005 Well look! He did it, and his ENGINE BAY CAUGHT ON FIRE!! That should be a sign right there! :lol: Quote Link to comment Share on other sites More sharing options...
TeeJay3800 Posted November 29, 2005 Report Share Posted November 29, 2005 Is it just the way the upper plenum/lower manifold bolts together that is different? Also, is there any disadvantage to having a '90 3.1 as far as reliability etc? Quote Link to comment Share on other sites More sharing options...
GutlessSupreme Posted November 29, 2005 Author Report Share Posted November 29, 2005 Is it just the way the upper plenum/lower manifold bolts together that is different? Also, is there any disadvantage to having a '90 3.1 as far as reliability etc? The actual threading in the LIM is different between the years, and the size of the bolt holes in the plenum. And of course the bolts themselves. The changes do not affect anything, certainly not any sort of reliability issue... Quote Link to comment Share on other sites More sharing options...
TeeJay3800 Posted November 30, 2005 Report Share Posted November 30, 2005 Good to know, thanks. Quote Link to comment Share on other sites More sharing options...
mfewtrail Posted December 3, 2005 Report Share Posted December 3, 2005 i prefer the paper Felpro plenum gaskets. Jeff M mentioned one time that one of his friends tried using those metal/o-ring plenum gaskets on a TGP, but couldn't get it torqued properly with an in/lb wrench and broke the plenum :shock: those ones listed above probably would work; the difference is the '91 bolts are 'bigger'. well, '91+ plenum bolts themselves are smaller, but they have a rubber sleeve which makes the bolt holes in the plenum (and gaskets) bigger. You have to be pretty torque-happy(no offense to Tony and whoever else has broken a plenum :shock: ) to overtighten them that much I would imagine. I've got the fel-pro metal gaskets in my SE right now and had no issue torquing them to spec....I used them at the time because that's what came int the kit I purchased. The plenum does sit up a little bit higher w/ the metal gaskets from what I remember, but I would have to compare my 93 to my 90 to say for sure. Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted December 3, 2005 Report Share Posted December 3, 2005 yeah the metal/o-ring gaskets do make the plenum sit up a little higher. i always use my in/lb wrench and torque the plenum bolts to 216 in/lbs. Quote Link to comment Share on other sites More sharing options...
GutlessSupreme Posted December 3, 2005 Author Report Share Posted December 3, 2005 You have to be pretty torque-happy(no offense to Tony and whoever else has broken a plenum :shock: ) to overtighten them that much I would imagine. Thing is I didn't even really tighten it down that much! I didn't really torque a thought so I just put them on pretty snug, but it shouldn't have caused that. Only thing I can think of is I screwed up the surface flatness when I hit it them with the die grinder (obviously that would do it if I made them uneven but I hadn't thought that they were). Quote Link to comment Share on other sites More sharing options...
GutlessSupreme Posted December 6, 2005 Author Report Share Posted December 6, 2005 http://autozone.com/servlet/UiBroker?UseCase=C001&UserAction=performSearch&Parameters=Auto+Store%7C%7EREGULAR+PARTS+LOOK+UP%7C%7ETIMING+COVER+GASKET Uhh.. which one do I need when doing the timing cover? Also, do I need a "timing cover seal" in addition to the gasket? :oops: Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted December 6, 2005 Report Share Posted December 6, 2005 yeah the seal is for the crank, and the gasket is for the face of the block. link didn't seem to work. Quote Link to comment Share on other sites More sharing options...
GutlessSupreme Posted December 7, 2005 Author Report Share Posted December 7, 2005 yeah the seal is for the crank, and the gasket is for the face of the block. link didn't seem to work. As in just the opposite of the main rear seal? Odd, I checked the link before I posted it.. maybe it depends on cookies. FELPRO W/O SLEEVE "N" SEAL TCS45828 $13.99 FELPRO W/SLEEVE "N" SEAL TCS45976 $6.99 WITH .565" SLEEVE LENGTH FELPRO W/SLEEVE "N" SEAL TCS45827 $19.99 WITH 1.040" SLEEVE LENGTH ENGINE_SEAL 82813 $4.79 VALUCRAFT W/O SLEEVE "N" SEAL VTS12240G $9.99 ROL TS12240 $4.69 I dunno what the difference is between all of them Quote Link to comment Share on other sites More sharing options...
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