Hi all,
I have just got my black beauty 1959 TR3 back on the road and it is running better than ever. I've got three questions though that I am sure someone with more experience than I will help me with.
1. There is some 'slop' in the accelerator linkage. For example, I will set the idle at about 8500 rpm, ride around for a while and when I get back to my garage my tachometer tester can show as high as 1100 rpm. If I reach over to the top of the linkage closest to the carbs I can get it back down to its original 8500 idle by giving it a firm twist counter clockwise, towards deceleration. It will stay there for a while even if I 'goose' it a little sitting in the garage but after a ride it will creep up again. I recently removed my carbs and the linkage and everything looked fine. When I put it back I made sure that I turned the screws that hold the linkage together so that they are firm. Not too long ago I replace the one and only accelerator spring that I can see so it is relatively new. My first thought is to get a strong spring but that would have to be a very strong spring to be equivalent to my manually twisting the linkage to get it back to my desired idle. I would just set it to the 'higher' idle and just not twist it manually at all but it is not possible sometimes to get the idle low enough doing that.
2. Dwell shows as 65 degrees. Before it was showing about 55 degrees. In both cases it runs as well as I can tell.
Is 60 degrees what it should be set to? I looked all up and
down my Bentleys and Haynes I could not find any spec for dwell. Did I miss it?
3. What is too cool for the engine to be running at? I used to have the needle almost exactly at the 185 degree 6 0'clock position but now it takes a while for the needle to get just a few degrees above the tick mark before 185. It will get up to 185 after I shut it off and let it sit there after a run but with my new infrared Thermometer I have yet to see a temperature above about 153 degrees on the block of the engine. This is after a good 20 minute run idling and sitting in my garage. The engine of course measures differently at different locations but should I be alarmed that it is measuring that low? I have replaced a good thermostat and tested them both using the pot of water on the stove technique and both worked exactly as advertised.
The thermo that is in there now is the hottest one I could find, 190 degrees.
Thanks very much,
Jim Lee
I have just got my black beauty 1959 TR3 back on the road and it is running better than ever. I've got three questions though that I am sure someone with more experience than I will help me with.
1. There is some 'slop' in the accelerator linkage. For example, I will set the idle at about 8500 rpm, ride around for a while and when I get back to my garage my tachometer tester can show as high as 1100 rpm. If I reach over to the top of the linkage closest to the carbs I can get it back down to its original 8500 idle by giving it a firm twist counter clockwise, towards deceleration. It will stay there for a while even if I 'goose' it a little sitting in the garage but after a ride it will creep up again. I recently removed my carbs and the linkage and everything looked fine. When I put it back I made sure that I turned the screws that hold the linkage together so that they are firm. Not too long ago I replace the one and only accelerator spring that I can see so it is relatively new. My first thought is to get a strong spring but that would have to be a very strong spring to be equivalent to my manually twisting the linkage to get it back to my desired idle. I would just set it to the 'higher' idle and just not twist it manually at all but it is not possible sometimes to get the idle low enough doing that.
2. Dwell shows as 65 degrees. Before it was showing about 55 degrees. In both cases it runs as well as I can tell.
Is 60 degrees what it should be set to? I looked all up and
down my Bentleys and Haynes I could not find any spec for dwell. Did I miss it?
3. What is too cool for the engine to be running at? I used to have the needle almost exactly at the 185 degree 6 0'clock position but now it takes a while for the needle to get just a few degrees above the tick mark before 185. It will get up to 185 after I shut it off and let it sit there after a run but with my new infrared Thermometer I have yet to see a temperature above about 153 degrees on the block of the engine. This is after a good 20 minute run idling and sitting in my garage. The engine of course measures differently at different locations but should I be alarmed that it is measuring that low? I have replaced a good thermostat and tested them both using the pot of water on the stove technique and both worked exactly as advertised.
The thermo that is in there now is the hottest one I could find, 190 degrees.
Thanks very much,
Jim Lee