Re: [xj-s] Hess&Eisenhardt Fuel pump (s)

["David Johnson" <davidj@ecentral.com>]

Well, I'm the guy that has two of these H&E jags, and I luv em. Both my
cars register 3/4, when the tank is full. The fuel light comes on and the
gauges read empty when I still have about 8 galls in the tank. The fuel
light just uses the info from the senders. I always fill up at this point.
Maybe the designers of this tank knew the car does not like to run on an
empty tank. The lower the fuel tank, the more prone you are to vapor lock
(no heat sink from a large pool of fuel in the tank). I have not suffered
vapor lock to date because I keep lots of fuel in the tank. 

Recently removed all the covers/ carpet etc. from the forward tank, behind
the seats. After a run in the hot weather (95 deg), I touch the tank and
find it is bl__dy hot. The fuel recirculating thru the engine bay (fuel
cooler not working), results in very hot fuel. I am sure most other regular
jag owners will find a similar result. The only difference for the Hess, is
we have two fuel pumps. Anyway I find it pretty scary (Hot explosive fuel
only a foot behind my seat). Also note this fuel tank is totally enclosed
in its own compartment (no cooling) inside the car. My GM cars all have the
fuel tank under the floor, hence air cooled by the air passing under the
car. I think the location of the fuel tank is a major contributor to the
vapor lock problem on all xjs models. Comments appreciated. Any ideas for
fuel tank cooling?

Pretty ironic that we all complain of the crappy British design. I thought
the Americans designed this installation, ha ha?

P.S. I didn't get any takers on me buying a pint for info on a duel fan
installation with shroud included. I guess we still do not have a good
solution  for the most important subject of engine bay cooling. Therefore I
shall do a little digging around at the auto stores, before I decide on the
final mod. If a job is woth doing, its worth doing right.

Dave Johnson
Mr Brit in Denver
Two Hess Conv. (His and Hers)






>Yeah, my H&E gas gauge is like the stock market: sometimes up, sometimes
down,
>always moving and seldom based on reality.  Question, on the H&E, is the
low
>gas light equally unreliable, or is it separately plumbed and so perhaps
more
>accurate?

- --Steve
'88 h&E

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