Engine

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  Gearbox Bearings
  rebuild size code gearbox bearing • • Calum

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  Tiny coolant leak.
  • Sgt Robuck 5

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  @sgt-robuck-5 doesn't work like that. Air pushes coolant up in the expansion tank filling it and then spits out on the road. Then returns to normal once cool. Just open the radiator cap and bleed it, problem solved.
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  Pv actions
  • declan

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  @irongamer727 I’d say so yes
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  Power valve
  • vtrn_raptor

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  Any news on this thread? Did the new servo sort it as mine does the same thing.
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  3SH belgarda engine
  • 2stroketerry

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  Aww cool, it's a belgarda engine. Italian import, you get mega props for owning one. They have wicked Motori Minerelli Stamps where the original DTR engine doesn't. It's super cool engine. Slow as balls though. It's just not comparable to the SP.
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  Is £58 a reasonable price?
  • Irongamer727

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  @calum That’s pretty cool might have ya have a check some day
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  Pilot jet advice
  • Glynn123

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  @irongamer727 The stock Pilot Jet is (25) , My advice is to try (27.5) to support your mods. Also dont forget about Needle height! Very important aswell
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  Gasket clutch side
  • Irongamer727

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  That will also do The clutch cover gasket doesn't need to be anything special.
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  3bn03 or o3
  • declan

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  @irongamer727 for what bud?
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  do any of you guys have any tips for removing the crappy yamaha screws that hold the engine together, dont know why yam didnt use allen bolts!
  • gilera.sc

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  Right also, don't be so quick to slate Yamaha for using the bolts that they did. I'm not going into here, you can easily Google that information, but trust me when I say there is a perfectly justifiable reason as to why they used the bolts that they did.
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  hi looking for dtr engine, must be 3mb as i need for my gilera sc, or if not complete engine a decent bottom end with no rod play, thanks
  • gilera.sc

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  @gilera-sc you have the best of knowledge right here on this forum
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  Slipping clutch after rebuild
  • Sgt Robuck 5

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  Mine slipped with Castrol Magentec. I just use Castrol GTX Semi 5-30w
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  CRANK BEARINGS !!!
  • jackthestripper

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  @calum ah great thanks man really appreciated
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  Cutout acceptable?
  • Irongamer727

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  @Calum look further up
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  Break in new cylinder
  • Irongamer727

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  I've always done about 5 heat cycles then a gentle ish ride before riding normal, never had any of my rebuilds seize or fail, obviously you don't wanna be holding it wide open for 2 or 3 rides but don't be afraid to accelerate, with a good forged piston and a few heat cycles you won't cause any harm.
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  Clutch issue?
  • Minia

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  Used 10w40 gear oil in mine with no issues, did replace clutch in 89 and suspect original plates contaminated as very "sticky" when I got them out
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  dragging clutch.
  • Sgt Robuck 5

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  Took it into my college to ask my tutor what he thinks. (he builds race bikes) he said it looks fine and I could file it down very lightly. he also said the scratches on the outside were fine.
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  Aprilia RS 125 Selector Drum Rebuild (Rotax 122)
  bearings selector drum removal rotax • • Calum

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  Fuel hose inner diameter?
  • Glynn123

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  the proper cotton braided fuel purpose hoses last a lifetime using clear ones for fuel is asking for trouble, they go brittle, crack, split, leak and are toss! you dont need clear ones, there is 2 filters in the petcock and theres a filter in the carb fuel inlet barb too
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  Difference tzr125 and dt125
  • Irongamer727

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  @calum well I’m not a tuner nor a pro mechanic but there’s something about tinkering tuning and modifying you’re bike which makes me so happy just to know no one has the exact same bike as me even my dt is specific to me