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Pettit AST failed.

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Old 08-28-08, 03:51 AM
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Pettit AST failed.
Yup, the cap seating area is definitely NOT making a seal, new cap and everything. The area where the cap sits is extremely flimsy.


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Old 08-28-08, 08:26 AM
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Man, that stinks.

That's why I specified a billet radiator neck on the Fighter's Garage AST - thin metal like that will warp over time if it's just press-formed.

Glad you found the problem, though!

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Old 08-28-08, 09:11 AM
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Thanks for sharing!!
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Old 08-28-08, 12:12 PM
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Originally Posted by staticguitar313
Yup, the cap seating area is definitely NOT making a seal, new cap and everything. The area where the cap sits is extremely flimsy.
Which seating area? The outer or inner? The outer looks corroded.
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Old 08-28-08, 02:49 PM
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outer, its really thin and soft. The Fighters Garage model is available with a billet top?
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Old 08-28-08, 06:31 PM
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Old 08-28-08, 07:00 PM
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Originally Posted by staticguitar313
outer, its really thin and soft. The Fighters Garage model is available with a billet top?
So, is it leaking because it bent/collapsed, or because it is corroded and has pits letting the coolant escape? I've rescued quite a few corroded seats with a flat file, polishing out the pits.

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Old 08-28-08, 07:05 PM
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^^it looks a little rusty and corroded, maybe from not using deionized water in the coolant?
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Old 08-29-08, 12:44 AM
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i'm having a custom AST made from a local rotary fabricator. I've only used distilled water and coolant in the car, nothing else.
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