RE: [T3] Dumb newbie Type-III electrical question

["Jim Adney" <jadney@vwtype3.org>]

On 23 Mar 2008 at 14:25, Rik Ponne wrote:

> Thanks Jim and Toby. Although I have not really looked into this, I think my
> fuel pump is located behind the kick panel of the rear seat (i.e. close to
> the engine and not under the fuel tank. Is there any disadvantage of having
> the pump there as opposed to under the tank?

As long as it's below the level of the bottom of the fuel tank, it 
will cure any possible vapor lock problem (assuming the filter screen 
in the tank is clean.)

I don't think I'd want to see one installed under the back seat. The 
gas line doesn't normally run within the passenger compartment, and 
running it back under the back seat strikes me as a safety hazard. If 
it's in the space next to the transmission, under the cargo area, 
that would be okay, but then I'd wonder why it wasn't just done under 
the tank, in front.

> The vapor lock problem, which is apparently related to the temperature,
> could be a reason for people here (in Thailand) to switch to electrical
> pumps.

In general, our engines don't have much of a problem with vapor lock, 
because the engine sits so low. Dave H. has pointed out that in case 
of a fuel pump failure, a type 3 carbed engine will run on gravity 
alone, as long as the gas tank is more than half full.

> I will look into the crash sensor interlock. Seems like a sensible thing to
> install!

The one we found here was for Fords, and was available from NAPA auto 
parts stores for ~US$25. You might be able to find a generic one at 
your FLAPS.

-- 
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Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
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