tooty
2nd Class Ticket
Posts: 13
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Post by tooty on Jun 5, 2006 13:53:55 GMT
Have just rebuilt my Mk 1 150 engine but she ain't running to great, she is a dr180 with a 24/24 carb down jetted with a sito plus exhaust as per Beedspeed recommendations. I have a P200e stator plate on it with only one marking here is the start of my problems I have figured out where it should line up on a 125/150 but when she is running she is running slow 40-45 tops (bearing in mind i am running her in though) if i try to rev beyond that she doesn't really respond. I tried advancing the timing a bit but although the speed increased she still seems to be missing a beat a bit do i advance it more and risk holing my piston or do i retard it beyond my original setting. The electronic stator is replacing a points ignition so i have no reference point to go back to short of taking it to a dealer (nearest one is about 30 miles away) or finding out how to use a timing wheel and strobe gun can anyone help? are there any gurus out there ?
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Post by Smallframe on Jun 7, 2006 18:30:50 GMT
find your tdc with a dial guage, or the stop dead method (which old jeff says is a lot more precise). mark the casing and then line up a degree wheel or use a dial guage to mark the degrees required before tdc (retarding is the safer option). I use a strobe to get it spot on. Sorry if this ounds a bit vague but your lack of power could be any number of reasons and you need to say how your carb is setup, whether the kit is new or not, squish band checked, proper head to suit the kit etc , etc. Srobing is a piece of p*sh once you have your casings marked up accordingly.
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tooty
2nd Class Ticket
Posts: 13
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Post by tooty on Jun 8, 2006 14:48:17 GMT
fear not it was just me being a tw@t Timing is fine now. I blindly accepted what the shop sold me and didnt bother checking, the main jet was too big and was pushing too much fuel through to the carb and flooding it when i opened her up. should have guessed when i was going though so much blimmin petrol....
I put a smaller jet in it and its running fine now now the only problem i have to overcome is the temptation to wap the throttle open on the bypass to work while i am still running her in..
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