Hi, since you seem to know a little bit about the Super Shifter, here is a question for you.
I have a Super Shifter, but I live in Spain, so my S.Shifter is the European version, I bought it in January of 2020 but with the covid restrictions that we’ve had over here, I haven’t been able to drive the S.Shifter more than a couple of times since I bought it, so yesterday I took it for a ride and here is my main problem.
I was told to set the Tillotson carburetor L 1:30 H 1:45 (I think in the good old USA you describe it as L 1:50 H 1:75) so with those settings the engine runs very well, but there is one curve where the engine dies, it feels as if it’s too rich, so I set the low at 1:15 (1:25 in the US) and it improved but still not 100% on that same curve, so I made it even leaner, L 1:05 and that solved the problem.
Now, a couple of things, as to why the engine dies on that curve every single time with the Low set at L 1:30, I don’t know, it’s a slow curve going downhill turning left, there are other slow curves at my local track, but it’s only on that curve where the engine dies, not on the others; and as to why making it leaner solves the problem on that curve, I also don’t know. But here is my fear, I don’t dare to go full throttle on the straights of the track as I fear that having set the Low so lean (L 1:05) will end up seizing the engine, even if I set the High richer I’m still scared to be honest.
I contacted Tillotson here in Europe and they told me not to set the low leaner than L 1:15 (L 1:25 USA) They said that in the US the Low can be set leaner, at around L 1:05 but given that the European version is different, I was told not to set the low so lean, so I’m confused and unsure of what to do… My question is, if the EGT doesn’t go higher than 650-675 degrees Celsius, can I still seize the engine when having the Low so lean?
Here in Europe we usually have an EGT sensor and we normally try not to have the temperature higher than 650-675 degrees Celsius, so anyway, if you have some thought I would appreciate, I’m a bit lost.
I used to have an X30 with the traditional Tillotson carburetor and I’ve never had a problem with that curve, or any other curve of the track, so as to why the 175cc dies in that one curve all the time when I have the low set the way I was initially told, I just don’t know
Right now I left it at L 1:05 and H 1:50 but I didn’t drive full throttle on the straights, I’m scared to seize the engine which is basically brand new, so…
Thanks in advance, I hope I explained myself clearly.