Just had a 500 cooler, T34 .63, light blue 400 injectors and chip fitted to 4x4 cossie and still have an issue in that under full throttle, normally in 2nd gear, if I floor it, it tends to miss. If I build up slowly all OK, but on full throttle it often does this. It did this before the conversion when I was on 330 kit. I've had an issue before with plug gaps causing this, but it did this after a rolling road tuning session where I know the plug gaps were altered. Sound likely, or change plugs, leads etc??

 

hi m8

i had the same sort of problem on my 2wd cossie running the same stuff as you but 330bhp, missing on top rpm every now & then so i replced plugs set at 25 thouw(cant spell) , new leeds rotor arm & cap & toutch wood its been fine ever since.

hope you get it sorted al.

 

as said above really and also have YOU had the jets in the amal valve checked or rejetted to suit your new spec!

 

Cheers guys, thought it might be plugs etc. No Amal valve on it, PTS took it off as it was faulty and put bleed valve on.

Here's hoping it is as cheap as plug gaps.

Thanks.

 

hi m8 my amal valve was drilled out. the one on the amal valve to 3 mm & the one to the air box or cone filter to 5 mm. remove the collets with a screw & pull them out

hope it all goes well m8 al.

ps. try new plugs not worth messing with the old ones.