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View Full Version : TR2/3/3A 1960 TR 3A Idle adjustment help



Tinkerman
03-16-2013, 03:27 PM
My engine now sarts and runs, yeah! Temp got to to about 185, oil pressure at about 60 and holding, but the tach was reading about 4000 rpm. How do I adjust the idle speed. I would like to run it in at about 1500 to 2000. How do I go about adjusting it?

Thanks, Tinkerman

Moseso
03-16-2013, 03:53 PM
There is an idle adjustment screw (sorry, no picture handy) on the side of each carb. It would be a good place to start. Undo the linkage between the carbs first. They are going to have to be balanced anyway, as part of your initial adjustments. There must be a thousand posts around here on how to adjust the SU carbs....

NutmegCT
03-16-2013, 04:32 PM
Here's the Practical Hints booklet to download and save; it gives a step by step on adjusting the H6 carb on page 33.

https://www.triumphtr.com/manual_tr3.pdf

Here's an online version:

https://docs.google.com/file/d/0B2H2NJt34OffNjQ4MTkyNjItZTVmYi00M2U2LWJhYWUtMjEyZ DgxMzUyNzUw/edit?usp=sharing

Hope this helps!
Tom

LexTR3
03-16-2013, 05:07 PM
Dick,

Idle at 1500 to 2000 rpm seems rather high. Shouldn't it be between 700 and 1000 rpm?

TR3driver
03-16-2013, 05:17 PM
Here's an online version:

https://docs.google.com/file/d/0B2H2NJt34OffNjQ4MTkyNjItZTVmYi00M2U2LWJhYWUtMjEyZ DgxMzUyNzUw/edit?usp=sharing

FWIW, you can also download the "online version". Click on 'File' at the upper left corner and choose 'Download'. Unlike the other one, that one is text searchable and not write-protected (so you can add your own comments if you like).

Let me know if you find problems or things that you feel are missing. I do maintain it from time to time.

TR3driver
03-16-2013, 05:18 PM
Dick,

Idle at 1500 to 2000 rpm seems rather high. Shouldn't it be between 700 and 1000 rpm?

The 1500 to 2000 would be for initial break-in of the camshaft.