| Subject: Re: Shave the head, how much is ok?---Fuel pump ????? |
Author:
Josh Carlson
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Date Posted: 13:09:03 07/23/02 Tue
In reply to:
Toyrail
's message, "Shave the head, how much is ok?---Fuel pump ?????" on 00:51:51 07/22/02 Mon
Bad news... you will need to have a return line back to the fuel tank. The fuel pump draws wayyy to much fuel at high rpms and that return line sends it back to the tank. My stock fuel pump puts outs 4+psi at idle. A 32/36 (which I have for sale) only needs 1-2psi. I think the 38mm is needs around 3psi. Anyway, both Type I and II have 3 lines. (I've had both) You do need the return line because of the nature of a mechanical fuel pump.
Sounds like a fun project. Post some pics someday.
Josh
Long Live The 22r!!!
>Hello all.
>
>I have a 1984 22r in my VW based railbuggy. The motor
>has no smog on it, has a header and will have some
>sort of Weber carb.Internally the motor is stock with
>2k miles on it.
>
>I want to shave the head for some additional HP. How
>much can the head be shaved before I run into problems
>such as valve to piston clearence and sloppy timing
>chain due to the now shorter head. Running race gas is
>not a problem for me since the car will be driven
>about 5 times a year.Please let me know about any
>other potential problems.
>
>Mehanical fuel pump-- I want one with 2 fuel hose
>fittings, one for inlet and the other for outlet. All
>the pumps I have seen have 3 hose fittings. Is there a
>2 fitting pump available??
>
>Thanks, Toyrail
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