tpi falling apart from corrsion
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Junior Member
Joined: Aug 2009
Posts: 31
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From: odessa/TX
Car: 1986 I-ROC
Engine: TPI 305
Transmission: STOCK
Axle/Gears: STOCK
tpi falling apart from corrsion
tried to change my thermostat and and the housing is falling apart then i found that the water ports on the bottom of the TB had collapsed into its self and had hole all in the bottom housing does any one know what would cause this and is it common by the way the car has sat since 95
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iTrader: (2)
Joined: Apr 2009
Posts: 388
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From: Iroquois, ON
Car: 87 IROC-Z
Engine: 5.7 TPI
Transmission: 700R4
Axle/Gears: Not sure, gotta look it up
Re: tpi falling apart from corrsion
Are they all aluminum parts? Are they rotting from the inside out? If so it's likely something called "crevice corrosion". Quite common on aluminum and stainless steel parts that are deprived of oxygen. Stray current (short to body or engine) can hasten the process.
Thread Starter
Junior Member
Joined: Aug 2009
Posts: 31
Likes: 0
From: odessa/TX
Car: 1986 I-ROC
Engine: TPI 305
Transmission: STOCK
Axle/Gears: STOCK
Re: tpi falling apart from corrsion
yup everything that has fallin apart has been aluminum parts and it is from the inside out
Senior Member
iTrader: (4)
Joined: Mar 2006
Posts: 683
Likes: 2
From: Florida
Car: '87 Trans-Am
Engine: LB9 (305 TPI)
Transmission: 700R4
Axle/Gears: 3.42 or 3.73..figuring it out still
Re: tpi falling apart from corrsion
I would have to agree that it is what was previously posted...stray electrical hastening corrosion.
Last edited by CreepingDeath94; Sep 18, 2009 at 06:09 PM.
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