Thx guys. Will give it a shot.
Got a few runs in over weekend.
Test strip was 338 feet. Was just how it came out to be. (With no brakes.) This length almost got me to top speed. Think top is around 32mph. What seen so far.
Pic is plug of the #190 main jet.
Still little hard to see. But could tell running lean. Test run shows same thing. Forgot to plug test, on the others.
#190
12.75 secs @ 25.7mph
12.68 secs @ 25.7mph.
That might be top speed for that jet. Didn't think to record rpm, until next test.
#220
11.97 secs @ 27.9mph 7790 rpm
11.98 secs @ 27.8mph 7780 rpm
Could feel the difference.
#230
12.24 secs @ 27.4mph 7600 rpm
12.22 secs @ 27.6mph 7609 rpm
Couldn't tell any dramatic difference. But a slight one.
All time had for. I have #200 and #210. Will half to see what I get with them. So far looks like 220 is best. Can clearly see a decline once hitting #230.
Looked at tuning carb. Forgot you can adjust the needle, for more or less the fuel for the main jet.
As suggested I should be running around #170. And I'm pretty sure I moved the needle down, on old engine, to lower the fuel.
Is it possible that need to move needle up, to get me around #170 range? Could moving the needle change the correct jet that much?
But haven't test run the 200 or 210. So maybe not that much of a change?????
And say this is true. Does it matter which way you go, to get the needed fuel intake?
Say #210 jet with needle lowered down, or #170 jet with the needle sitting on top adjustment?
Is there a difference??
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