A lot of us use this very same set up, paying attention to SU float bowl lid
orientation and we don't suffer fuel starvation. In my current TR4A I use a
Holley regulator split to go to the carburetors and a Fuel Pressure gauge
complete with inline isolator and I've never had a problem.
I had this same type of setup in my previous car, a TR4 but I had to solve a
miss much like what has been described. That car had a welded up tranny mount,
UK sourced racing front engine mounts (hard) and a turnbuckle stay that
limited engine movement. It would show up under full throttle at the exit of
turns. It's been so long that I can't remember if it was right or left turns.
I think that engine vibrations that weren't being damped elsewhere were
foaming up the fuel in the float bowls.
I ended up going back to the rubber tranny mount and I put a 2" o-ring between
the intake manifold and the isolator plates. I used a 2" hole saw to create a
small locating groove. This solved the problem. I now fill the tranny mount
with silicone to help it hold together and do a little dampening.
I also make sure to use OEM style float bowl bolts and I replace the little
rubber bushing without over-tightening. I had one of those bolts break once
and it acted up immediately. Having a float bowl hanging by the fuel line is a
good argument for overflow lines.
Bob Kramer
Sales Manager
RDO Equipment Company
16415 N. IH 35
Pflugerville, TX 78660
512-272-4141 Office
512-657-8526 Cell
We are as happy as we make up our minds to be.
~ Abraham Lincoln
-----Original Message-----
From: fot-bounces@autox.team.net [mailto:fot-bounces@autox.team.net] On Behalf
Of Joe Boruch
Sent: Monday, June 28, 2010 1:00 PM
To: tr4racing@googlemail.com
Cc: fot@autox.team.net
Subject: Re: [Fot] More help needed on HS6 hesitation 1962 TR4
I have both my lines coming from a fuel regulator on the inner fender and
then
across to each carb, and have never had an issue with starvation or flooding
in corners. I am running slicks and am cornering at over 1g. Joe(B)
---------- Original Message ----------
From: "MadMarx" <tr4racing@googlemail.com>
To: <fot@autox.team.net>
Subject: Re: [Fot] More help needed on HS6 hesitation 1962 TR4
Date: Mon, 28 Jun 2010 07:37:44 +0200
After having a look on your photo I would think the trouble is caused by
your fuel lines.
They are going horizontal towards the carbs beginning by the fender.
The centrifugal forces do have effect on the fuel, so your engine does
starve fuel on a left hander and might flood on a right hander.
To cure this I would put the feeding line to the rear carb, starting from
the battery box area and then do a short connector UNDER the intake trumpets
to the front carb.
Also check the pressure of your fuel pump. Maybe the pressure is too low.
Cheers
Chris
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