Puck Posted February 21, 2015 Posted February 21, 2015 if you have to really seal an intake to keep it from blowing out you have other issues..... way to much internal pressure. Most of the times I've seen it they vent the breathers too small and when you seal the intake it blows the breather out. both covers should have open tubes to a catch can.... with good ring seal you should have minimal internal pressure but on boosted apps i set the rings pretty loose because under boost cylinder pressure spikes and rings will pinch shut. I'll set ring gaps at .0065 x's bore size for boosted apps. looser on the 2nd ring yet. I use sealant in Caulk gun form.... I do so many LOL I usually use permatex blue or GE blue... LT1 is a special case, with a totally different intake setup from an SBC. In that case internal pressure doesn't cause it, just dramatic heating/cooling cycles in an oily contact area of two thin pieces of metal. No coolant flows through it so there is no front/rear gasket, and that whole area gets crazy hot if you have emissions since the stock EGR valve is right up against it. A quick search for "LT1 rear intake leak" will give tons of results - many of them probably with replies from me. Mine leaked twice with standard Permatex, never leaked again when I used "The Right Stuff" . Now that's all I use anywhere that touches oil. Share this post Link to post Share on other sites More sharing options...
dr_bowtie Posted February 21, 2015 Posted February 21, 2015 yep i am very familiar with LT1 engines. the "Black" silcon that factory installs leaks as well So does the Silver and Tan silicon they use on Corvettes... I have a LT1 in my 98 Firebird....... Share this post Link to post Share on other sites More sharing options...
IVIYTH0S Posted February 21, 2015 Posted February 21, 2015 Out with the old and in with the new: PICTURE! I bent the hell out of the old one playing with it before I pulled it out. Such a POS. Pic(s) of the bent wheel? Share this post Link to post Share on other sites More sharing options...
Waco Posted February 22, 2015 Posted February 22, 2015 I bent it back because Amanda wants to hang it on the wall in the garage. It's...mostly flat. Share this post Link to post Share on other sites More sharing options...
IVIYTH0S Posted February 22, 2015 Posted February 22, 2015 I bent it back because Amanda wants to hang it on the wall in the garage. It's...mostly flat. Rebend it and snap a shot for the memories! Share this post Link to post Share on other sites More sharing options...
BluePanda Posted February 22, 2015 Posted February 22, 2015 WHEEL see...hahahaha Nah, maybe I'll have him bend it up to hang on the wall bent up -- kinda funny that way too. Share this post Link to post Share on other sites More sharing options...
bp9801 Posted February 22, 2015 Posted February 22, 2015 WHEEL see...hahahaha Nah, maybe I'll have him bend it up to hang on the wall bent up -- kinda funny that way too. You should hang it up rebent to serve as a reminder and a warning to the new steering wheel. Share this post Link to post Share on other sites More sharing options...
Waco Posted March 1, 2015 Posted March 1, 2015 A bit of (cold) work today since the roads didn't get plowed. Drilled/tapped/bunged: Pan remounted after being THOROUGHLY cleaned. I don't want it to leak again. Cleaned up the head surface... And the block surface... ARP studs! New MLS headgasket...stock is graphite core, figured I might as well upgrade now. ...and head reinstalled! After a bit more cleanup and plumbing, as well as a few fixes while the engine is out, the heart will go back in! Share this post Link to post Share on other sites More sharing options...
GabrielT Posted March 1, 2015 Posted March 1, 2015 Drilled/tapped/bunged: Sigged. Nice work though, I can't seem to get anything done even when I'm snowed in. Share this post Link to post Share on other sites More sharing options...
Waco Posted March 3, 2015 Posted March 3, 2015 Retimed the cams and buttoned it up: Installed the studs and torqued everything together. Share this post Link to post Share on other sites More sharing options...
Boinker Posted March 3, 2015 Posted March 3, 2015 Waco I has a question. Does that turbo come with an oil flow restrictor?? Share this post Link to post Share on other sites More sharing options...
Waco Posted March 3, 2015 Posted March 3, 2015 Yup. There's a restrictor fitting where I plumbed it on the block. Share this post Link to post Share on other sites More sharing options...
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