how do you get the TPI runners to not leak?



how do you get the TPI runners to not leak?

Postby grumpyvette » August 19th, 2011, 1:31 pm

" hey PAUL?
, getting ready to reassemble the TPI system on my 1988 TransAm. Engine is completely rebuilt and has less than 100 miles on it. Everything is completely disassembled and I am in the cleaning part of the job. Are there any items that require measuring before assembly? I plan to use a set of the SLP runners. What is your opinion of using rtv on the gasket surfaces, or is it better to assemble dry ( except for the front and rear rails of the manifold and the water ports)? Any tricks to ensure a leak free reassemble? I have a Felpro gasket set and an SLP set for the runners. "

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http://www.amazon.com/GearWrench-80588- ... g+torx+bit
youll need several torx bits in various lengths in T40 and T45
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READ THRU THIS LINK
viewtopic.php?f=55&t=1378

viewtopic.php?f=44&t=366&p=448#p448

viewtopic.php?f=55&t=2773&p=7802&hilit=gasket+runner+port#p7802

viewtopic.php?f=44&t=6204&p=19420&hilit=cold+start+injector#p19420

in most cases youll need a long torxs bit (#40 if I remember correctly)and a 1/4" drive with a swivel plus ratchet and extension to reach the inner bolts
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http://www.zdmak.com/wbstore/main.asp?a ... =1&LowCt=0

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remember the inner bolts holding the intake runners to the base, need to be accessed from the opposite side of the intake if the runners won,t come off easily
TPI intakes are notorious for minor vacuum leaks, but if you clean the gasket surfaces, and use a decent gasket sealant on both sides of the runner gaskets and carefully tighten the runners to both the base and plenum your very unlikely to have leaks
the best sealant I've found is this 3M BLACK weather strip adhesive
be VERY sure its the newer BLACK type not the older YELLOW version
remember the stuffs basically contact cement so you apply it to all gasket surfaces, let it dry for 5 minutes THEN assemble
READ THRU THIS LINK ALSO

http://www.corvettefever.com/techarticl ... to_08.html

most people find a set of extended torx bits very useful
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http://www.superchevy.com/how-to/corp-0 ... epair.html
you simply run a 1/8" bead on both the runner ends and the plenum and base runner contact areas and a thin matching bead on both sides of the gasket surface then place align and install the runners and get ALL the bolts started before you tighten ANY of them, to make sure every things lined up correctly
be VERY sure its the newer BLACK type not the older YELLOW version
remember the stuffs basically contact cement so you apply it to all gasket surfaces, let it dry for 5 minutes THEN assemble
theres useful info in this link
http://www.thirdgen.org/injectorswap

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be aware that the lower runner gasket is not interchangeable between the drivers and pass sides of the engine on a tpi and if installed incorrectly that results in hard starts a big vacuum leak and an engine that won,t idle
IF YOU CAN,T SMOKE THE TIRES AT WILL,FROM A 60 MPH ROLLING START YOUR ENGINE NEEDS MORE WORK!!"!
IF YOU CAN , YOU NEED BETTER TIRES AND YOUR SUSPENSION NEEDS MORE WORK!!
grumpyvette

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