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Old 08-17-2010, 03:23 PM
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Fuel Stink - How to Vent Fuel Tank for Chevy 350 TPI Engine

Hello folks,

After tackling the brake problem on my 47 Plymouth, I decided to jump into another annoyance - fuel stink emanating from the tank area.

I emptied and dropped the tank, only to find that there was no vent whatsoever, and that the fumes were coming from a defective weld on the top of the tank. So, the tank will be sent out to be fixed, and I want to make sure that it is vented properly. What would be the proper method for venting this fuel system? The engine is a 1987 Corvette 350 TPI.

I want to do anything necessary to eliminate the gas fumes (wife is very sensitive to them).

Thanks in advance!

Cheers, Ken

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Old 08-17-2010, 07:50 PM
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You should put the evaporative system on the car from the donor car.
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Old 08-17-2010, 07:51 PM
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maybe you can find an aftermarket evap system with a billet style carbon canister for looks and such
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Old 08-17-2010, 09:58 PM
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Quote:
Originally Posted by latech
You should put the evaporative system on the car from the donor car.
Maybe you can find an aftermarket evap system with a billet style carbon canister for looks and such
Thanks, latech, both ideas have merit.

Turns out that there was a vent bung, but it had been welded shut. Go figure.

For now my tank guy is going to reopen the vent and install a vent tube, so we can get the tank back in the car. If there is a fume problem after that I will look into a compact evap system, whether it is a stock-type or aftermarket.

Would I need to plumb the evap system all the way to the engine for it to work, or could I just 'deadend' the vent line in?

Thanks again.
Oh, almost forgot - Cheers, Ken

PS:
Mr. Moderator, why can't we have signatures on this forum?
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Old 08-18-2010, 03:02 AM
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Ken, your car should just have a vented cap-no fuel smell-it worked for decades. my pantera just has a vented cap-no fuel smell. now on my C4 TPI the tank is sealed and is vented through a charcoal canister at the DS front bumper. obviosly no fuel smell, but the TPI on an older car certianly does not need this. Ken, we knew you had other obligations this weekend, but we missed you. we met ravaflave (from CF) and had dinner at Tommys Joint on van ness.
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Old 08-18-2010, 08:54 AM
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Quote:
Originally Posted by techron
Ken, your car should just have a vented cap-no fuel smell-it worked for decades. my pantera just has a vented cap-no fuel smell. now on my C4 TPI the tank is sealed and is vented through a charcoal canister at the DS front bumper. obviosly no fuel smell, but the TPI on an older car certianly does not need this. Ken, we knew you had other obligations this weekend, but we missed you. we met ravaflave (from CF) and had dinner at Tommys Joint on van ness.
Hey, techron, thanks for the info.
I don't think a vented gas cap is an option, as I have a hidden gas fill door setup whisch utilizes the quick-fill cap:



Hope you guys enjoyed Tommy's; haven't been there in while. Did you try the buffalo stew?

Cheers, Ken
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