barneys primmy

[ozzy]

yeah 140 is very high, you would only really see this timing on a gp race bike revving around 14k with huge exhaust duration...

[barneystgeorge]

i may of fucked up on my measurments transfers untouched on barrell i think just rebore kh400 piston+top and tail . running in + setting up now seems 2 pick up in higher revs butneed a week or two playing withit before dyno MOT asap so i can go out on road[defanatly wont rev 2 14k]

[ozzy]

it wouldn't unless you had about 200 degress of exhaust and appropraite everything else

[barneystgeorge]

DROPPED A RING looks like it all went out exhaust via head crank ok thank god piston f@@ed kh 400 d grade anyone?

[barneystgeorge]

i think whoever cut window may have put it wrong side the arrow points 2 exhaust but ring clips just either side of exhaust port only just clearsby about 5mm .Do you reverse this type of piston?

[barneystgeorge]

ok new barrell on still autisa but with different piston this is a bit of a jeckel and hyde ,ride it normaly and it like a primmy should be 50+ but ring its neck and it takes off high up the rev range but wont make that jump between 3rd and 4th+jumps out of gear if not perfect change close ratio box anyone?

[barneystgeorge]

run it to mersea and back and it dont like staying in gear 1st and 4th ok but 2nd +3rd jump like fu*k also when i managed to keep it in 3rd it would rev out at an indicated 60+ then into 4th and it dropped down 2 50mph no amount of tyring would encorage it 2 go faster i think one of those gear kits from denis is next [cheers 4 the link marcus]engine strip soon possable new clutch aswell not slipping just not working when pulled in and unable 2 adjust 2 work[200 miles from new] any tips /advice on either problem listened to cheers 4 now barney

[barneystgeorge]

Ok this must be the longest gap between posts so far,
It is now running vmc with polini reed and a funky exhaust still have the staying in gear problem,was going to run this but 2020 put payed to this