as long as your on tune you shouldn't have any lack of bottom....what plug and fuel are you running ?

what's your needle positions ?

the way the stock JL is setup it will have a very soft bottom ..I would recomend removing head shims as well as installing a JP-1

Thanks Neal

Also try a JP-1 if you have one

Ohhh...stock.

I just ordered one from clockwork to finish the season. Can't wait to get it in and see what it does.

P3 plug. Close to factory. No more than 3 hrs either way.

what pipe and clutch are you running ? fuel %

P3 plug. Close to factory. No more than 3 hrs either way. Byrons 25

JP1. Losi 4 shoe w/blk & grn springs. Byrons 25

A plug as hot as the P3 can actually mask a low-speed
needle adjustment that is too rich. You may want to run
a little colder plug if your going to start removing head
shims. I ran my JL every day this week. The temps here
have been near 90*f. with very high humidity. It's like
standing in a sauna. My JL didn't need any tweeking.
The engines temps are running about ten degrees hotter
and it's got all the, tire shreading low-end balls, that
it had when it was twenty degrees cooler outside.

What pipe is everyone running on the stock jl.I'm running one in my D8 and D8T with an re10 and the engines run great but are lacking fuel mileage.

i run a jp3 in truggy w/30%+p3 plug. other day i pitted at 10 min in 20 min main. had 1/8th tank or more of fuel left after 20. i have almost tried jp1 but feel no need to do so

JP-3 for stock JL its a beast with this pipe an good on fuel

Thanks for the quick replies the jp3 is what I put on to try for the next race.