TPI star bolts
TPI star bolts
alright, quick question.
can i get a new set of these bolts from GM? ...or anywhere for that matter?
one of the star bolts that connects the runners to the plenum is pretty stripped out and i am completely missing another one. although there is no leak i would most definitely like to have that bolt in. help!
thanks guys!
can i get a new set of these bolts from GM? ...or anywhere for that matter?
one of the star bolts that connects the runners to the plenum is pretty stripped out and i am completely missing another one. although there is no leak i would most definitely like to have that bolt in. help!
thanks guys!
Moderator
Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Torx bolts? You could get new ones from a dealer, or any nut and bolt supplier. You don't have to stay with torx heads if you don't want to, an allen socket head would work, too.
Senior Member
Joined: Jan 2006
Posts: 793
Likes: 0
From: Michigan
Car: 1987 Trans Am
Engine: 5.0L TPI
Transmission: 700R4
Axle/Gears: Richmond 3.73
I think they sell a complete kit on Ebay thats all stainless steel.
I was going to get one just to dress up my motor a little bit.
I was going to get one just to dress up my motor a little bit.
Joined: Feb 2001
Posts: 8,494
Likes: 411
From: Sophia, NC
Car: 2016 Camaro SS + 1986 Z28
Ugh, TORX suck!!!!! ....I replaced EVERY single one on my motor. But yeah, they should be easy to find.
....For the TPI, I used stainless allen bolts. I honestly can't remember where I got 'em from, but it was a kit.
....For the TPI, I used stainless allen bolts. I honestly can't remember where I got 'em from, but it was a kit.
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Joined: Oct 2004
Posts: 3,361
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From: Worcester, MA
Car: 86 T/A
Engine: HSR 355
Transmission: 700R4
Axle/Gears: 2.77 posi
http://www.mmsacc-stainless.com/
Fair prices on shipping and very good prices on the hardware you need. Even some custom aluminum hold downs and brackets.
Fair prices on shipping and very good prices on the hardware you need. Even some custom aluminum hold downs and brackets.
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iTrader: (1)
Joined: Nov 2006
Posts: 830
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From: Victoria BC Canada
Car: 87 Camaro IROC
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 3.23
you shouldnt be buying stainless bolts for an engine that has to heat up and cool down all the time. stainless is just about the most UNstable metal, and will just break under certian conditions. going to your local bolt store wont work either unless you custom order some grade 10.9 bolts. going to the dealer is the best bet because they will order the correct bolts, correct length, and itll only take a day or 2. your bolt store may take a week, and they probably order the wrong stuff because theyve never seen grade 10.9 (metric grade) with a standard thread.
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Moderator
Joined: Jan 2000
Posts: 20,981
Likes: 11
From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
There's nothing special about the grade of the factory intake bolts, and they see little stress, thermal or otherwise. Replacing them with stainless is fine.
Bolts that are stressed, like rod bolts, head bolts, etc. you'll never find in garden-variety stainless.
Bolts that are stressed, like rod bolts, head bolts, etc. you'll never find in garden-variety stainless.
Supreme Member
iTrader: (1)
Joined: Oct 2004
Posts: 3,361
Likes: 1
From: Worcester, MA
Car: 86 T/A
Engine: HSR 355
Transmission: 700R4
Axle/Gears: 2.77 posi
you shouldnt be buying stainless bolts for an engine that has to heat up and cool down all the time. stainless is just about the most UNstable metal, and will just break under certian conditions. going to your local bolt store wont work either unless you custom order some grade 10.9 bolts. going to the dealer is the best bet because they will order the correct bolts, correct length, and itll only take a day or 2. your bolt store may take a week, and they probably order the wrong stuff because theyve never seen grade 10.9 (metric grade) with a standard thread.
Senior Member

Joined: Mar 2003
Posts: 851
Likes: 3
From: vacaville,ca
Car: 1988 camaro z28,1997 camaro lt1
Engine: 355 afr 195 heads,tpis big mouth
Transmission: 700r-4 built by me 3-4 z pack
Axle/Gears: 3.42
www.tpiparts.net sell them.
Senior Member
iTrader: (1)
Joined: Nov 2006
Posts: 830
Likes: 0
From: Victoria BC Canada
Car: 87 Camaro IROC
Engine: 305 TPI
Transmission: 700r4
Axle/Gears: 3.23
and if you decide to use stainless, make sure to either coat the threads with gear oil, or anti-sieze (copper is preferred for its thermal properties). the diss-similar metals will bond together from the heat, and without protection, will corrode and fuse together. same goes for aluminum heads and steel bolts.
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