mult68

iTrader: (1)

Looking for a chrome or red TPI thermostat housing....Looking at the Jegs catalog, part #778-66210, Chevy, Camaro, Chevelle V8 66-75.......however I seem to remember someone saying that the TPI housings are different (different angle). So does anyone know which will work? And anyone know a company that sells red ones? Thanks

RCR

The housings are different due to the throttle body sitting over it. So, why not paint/powdercoat the one you have?

86TpiTransAm

The stock housing is aluminum so just polish it. That's what I did to mine. I believe there's an article in the Tech Article section on polishing you TPI components.

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1986 Trans AM
355 TPI
4 Wheel Disc Brakes
9 bolt Borg Warner Rear (2.77's....oh joy) :P
6" rods, approx. 9.7:1 Compression, Stock TPI (soon to be ported), 24#/hr LTI injectors (cleaned and flowmatched by Cruizin Performance), Hedman Shorty Headers, 3" exhaust with 80 series flowmaster, SBC 993 heads completely redone and modified for 1.6 RR, 1.52 RR (for now), Comp Cams XE262-14 TPI Cam, Holley AFPR, TPIS airfoil, MSD wires, MSD 6-AL Ignition, Hypertech 53,000 volt coil.

Track times to come.

mult68

iTrader: (1)

Well I would...but im selling my stock tpi manfiold on ebay to buy an aftermarket one......and I think it would be kinda wrong/mean to last minute not include the thermostat housing....I suppose i'll just go to a junkyard, get a stock housing..and then polish it or have it powder coated. I suppose that would be the best thing to do since it'll probably be cheaper to have that done instead of buy a new one...especially if I have other stuff powder coated at the same time....or the polishing will be pretty much free if I do it myself. Thanks

Desert86Roc

Since the waternecks are aluminum, they are pretty much toast when you take them off. Most of them corrode. I would let your TPI go as is without the waterneck. They are only $16 at the dealer anyway.


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Mike Metzler (Desert86Roc)[*] Check Out:SpeedWorldMotorplex.com[*] Check Out:Chevrolet F-Body Online Part & Illustration Manual[*] www.MetzlerRacing.com

Best ET @ 1250 ft[*] 15.352 @ 91.215 mph (uncorrected)

aseychell

Old thread I know and actually this is why I am checking again. Does anyone know if there are chrome thermostat housings yet? I just bought a new AC Delco one and took me almost 4 days to get it shiny and polished. The casting was a disaster and I had to use a file to even out the surfaces. A few weeks later and I am seeing a tiny tear of coolant whereThe flange meets the actual elbow which is not a good sign. Filing must have ate all the material and I really don’t want to go through the pain if polishing another one from scratch.

Where I live they don’t chrome plate aluminum unfortunately for me.

Perhaps someone managed to use to common shorter housings with a different hose perhaps? What is so special about TPI?

Vader

It is not only the length, but the outlet angle that is different on a TPI.

Fast355

iTrader: (2)

I have used the common low profile angled one and a vortec truck radiator hose on several TPI setups
The water outlet ends up pointing toward the driver rear of the engine.

aseychell

Good solution albeit I would like to keep stock routing.

aseychell

I ended up grinding from inside and couldn’t even see a pinhole. Must be a really tiny defect in the material. I blocked off the housing and applied 30 psi of air and there I could see a small bubble.

Decided to JB Weld it and see how it goes. Tried with the air compressor again and no bubbles. Tried in the engine and all looks fine for now. Used marine weld as it is more resistant to chemicals and bonds to aluminum. We’ll see...