stevie taff Posted May 26, 2004 Share Posted May 26, 2004 I hope you guys can give me some advice. I am buying a 03 plate DT125 and want to de-restrict but my local shop is telling me that you cannot open up the power valve on this, they have said I can put a DEP exhaust on but that it wont make that much difference. Any suggestions? Link to comment Share on other sites More sharing options...
Pete Posted May 26, 2004 Share Posted May 26, 2004 I know nothing about DT125's I'm afraid. There is a specialist for that vehicle here...he'll advise you. BTW...RU Welsh? :shock: That's fine by me....as long as you're not one of those Cardiff Boneheads! Link to comment Share on other sites More sharing options...
dibeydude85 Posted May 26, 2004 Share Posted May 26, 2004 i dunno didly squat about the 03's, dont they have leccy starts???? Link to comment Share on other sites More sharing options...
mozzy Posted May 27, 2004 Share Posted May 27, 2004 04 has leccy start yes the power valve can be opened just remove the servo they are exectly the same engine throughout the range Link to comment Share on other sites More sharing options...
stevie taff Posted June 1, 2004 Author Share Posted June 1, 2004 Ill a diferent exhaust make much difference to power Link to comment Share on other sites More sharing options...
TarkMalbot Posted June 1, 2004 Share Posted June 1, 2004 Even the earlier DT models came with the option of the electric start. The DT you are about to buy may not even have a servo for the power valve. If this is the case just open the valve up and it will be open at all times. Low down power will suffer but will rev better at higher revs. If the bike does have a servo fitted then you might also need to look at the wiring as the powervalve will open at about 6k but then close again as you rev more. The Standard exhausts sometimes have a washer welded to the inside of them just a few inches infront of the exhaust port. But removing this or putting on a dep pipe will improve performance. A dep Pipe will make the bike rev quicker and increase back pressure. It may lack a little power at low revs again but 2 stroke off-roaders are all about top end high reving power. Link to comment Share on other sites More sharing options...
mozzy Posted June 2, 2004 Share Posted June 2, 2004 tark i spoke to yamaha about electric start and it wasnt an option to have electric start you can make them electric by taking the starter and bits off a certain model and will straight on yamaha didnt give the option Link to comment Share on other sites More sharing options...
TarkMalbot Posted June 2, 2004 Share Posted June 2, 2004 My R Reg 1998 DT125R was an Electric start. :wink: And In the Owners manual it had all the instructions of how to start it. Link to comment Share on other sites More sharing options...
dibeydude85 Posted June 2, 2004 Share Posted June 2, 2004 do you live in Autralia or something cause it was never an option to my knowledge. and DEP gives you more low down grunt and more top end power on the newer models. Link to comment Share on other sites More sharing options...
TarkMalbot Posted June 2, 2004 Share Posted June 2, 2004 It was a purple one with white and orange bits on it. DT125RS I think. The S being for the electric start. :? ?? Never mind. Link to comment Share on other sites More sharing options...
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