Cliff,
There is an inherent problem with twin SU carbies on an engine which is
tilted so it's higher at the front than the back. With the same float level
settings, the front carby, with its float chamber to the front of the
engine, has a higher fuel level in the float chamber, relative to the jet
oriface, than the rear carby, with its bowl at the back and therefore lower.
Change the adjustable float to the front carby so you can lower the fuel
level in that carby.
Regards,
Bob Hutton
-----Original Message-----
From: owner-triumphs@autox.team.net
[mailto:owner-triumphs@autox.team.net]On Behalf Of Cliff Hansen
Sent: Saturday, 12 September 1998 23:58
To: triumphs@autox.team.net
Subject: TR4 - SU carb float adjustment
Hi,
While cleaning the carb pistons last night, I noticed that
the fuel level in the front carb was much higher than in
the rear. Aha! I thought, this may help explain the intermittent
afterrun I still have. After opening the float bowls I discovered
that the front float has only 1/16" clearance, but its not
adjustable. The float and hinge are all one plastic piece. The
rear carb's float has a metal tab that you can bend to adjust
the float level.
Two questions:
1) How important is this level?
2) Could it explain the tendency of the car to run on?
Thanks,
Cliff Hansen
chansen@exis.net
1966 TR-4A CTC 64615L
|