Top End

• 

  Porting, Polishing & General Tinkering
  • Calum  

  1
  0
  Votes
  1
  Posts
  4146
  Views

  No one has replied

• 

  New Athena 125 head get it ported or not?
  • Walney-Reptiles  

  2
  0
  Votes
  2
  Posts
  67
  Views

  

  any info/help?
• S

  Too end rebuild - piston ring fittment?
  • SouthWalesYammy  

  2
  0
  Votes
  2
  Posts
  38
  Views

  

  AHH!! Stop. You have to measure the piston ring end gap! And modify so that's within spec. It's common to see at least one, if not both, rings out of tolerance as it's expected that the user till measure and setup accordingly. The ring end gap tolerance is in the haynes.
• A

  ATHENA 170 CARB JETTING
  • andrew1990  

  7
  0
  Votes
  7
  Posts
  90
  Views

  D

  Irongamer on here used to run the Athena kit so might be worth dropping him a message, for a good starting point.
• A

  mick abbey tuning before and after
  • andrewj1680  

  24
  0
  Votes
  24
  Posts
  3443
  Views

  T

  @Glynn123 Just picked up my re-bored and ported barrel off Mick yesterday, looking for £225 including royal mail 1st-class signed for delivery and a free Mick Abbey sticker. The Namura Piston Kit cost me £65 from p.j.m.e and Micks labour on top so £225 for all the parts is the best I can do.
• 

  Lapping
  • Bluestoesonnose  

  19
  0
  Votes
  19
  Posts
  406
  Views

  

  Like with most things, the work is in the preparation.
• 

  It's all Calums fault
  • Bluestoesonnose  

  16
  0
  Votes
  16
  Posts
  403
  Views

  

  @2stroketerry thanks for the kind offer but my head and barrel are on their way after a call to Mick. Seems for the kind of time I'm looking for a bigger carb isn't required
• 2

  Athena 170 kit
  • 2stroketerry  

  4
  0
  Votes
  4
  Posts
  315
  Views

  2

  Yes mine goes off the clock as well as only 80mph on the clock and thats with a 16t, pulls well really considering I'm 6ft and 21 stone.lol
• 

  4FU vs Athena 170
  • DanRacing  

  2
  0
  Votes
  2
  Posts
  271
  Views

  

  Yeah 4FU barrels are plated. So are the Athena barrels IIRC. It's about £130 to have it replated. PJME will probably drop a liner in there if you wanted them to.
• 

  Cylinder head
  • Bluestoesonnose  

  5
  0
  Votes
  5
  Posts
  235
  Views

  

  Cheers, I'll call around and see if its cheaper than a big bore kit
• D

  3bn Y-1.......3bn Y-3
  head • • dt125Matt  

  9
  1
  Votes
  9
  Posts
  683
  Views

  

  @dt125matt No, I mean I used Mick Abbey to get my cylinder done. Can't really comment on how it fairs to stock, since I did loads of mods and didn't really notice much...
• 

  Athena 170
  • Irongamer727  

  112
  1
  Votes
  112
  Posts
  11097
  Views

  

  @louis-james Don't know about TZR cylinders. But 3MB 3MBP 4FU Are bolt ons. The 3BN has a slightly bigger bore, so shorter stroke, as a result, a 3MB con rod will bit too long.
• 2

  Kit 200CC to upgrade the Yamaha dtr 125
  • 2stroketerry  

  12
  1
  Votes
  12
  Posts
  2796
  Views

  

  @glynn123 It's advancing the whole ignition system which is less than ideal. Increasing the risk of detonation and pointless if you just get an aftermarket ignition system since you can alter the spark electronically.
• 2

  Dt 50 modified to 112cc vs Dtr 125 vs Yz 125
  • 2stroketerry  

  2
  1
  Votes
  2
  Posts
  322
  Views

  

  How Many DT's in that video. That's mental. I bet over there they can actually keep their bikes without them getting nicked left right and center!!! :@
• V

  Best piston
  • vtrn_raptor  

  25
  0
  Votes
  25
  Posts
  4548
  Views

  

  @irongamer727 You can go overbore. Really need to modify the valve when you do. And you can have a new liner put in.
• Y

  Time to change wheels and ...
  • Yegor  

  47
  1
  Votes
  47
  Posts
  4509
  Views

  

  @yegor Yeah, it's gotta be suitable for oil.
• D

  carb warmer hoses location
  • dan28  

  3
  0
  Votes
  3
  Posts
  602
  Views

  

  They both go to the carb.
• D

  pinned powervalve gap or no gap
  • dan28  

  15
  0
  Votes
  15
  Posts
  1347
  Views

  D

  the plastic pulley has to aligned with hole to be able to pin it though unless I glue a washer on to the plastic pulley to align it before the hole
• 

  Cooper plates cylinder kit
  • Irongamer727  

  8
  0
  Votes
  8
  Posts
  723
  Views

  

  @irongamer727 I distinctly remember not using them on my rebuilds, so shouldn't worry
• V

  This topic is deleted!
  • vtrn_raptor  

  1
  0
  Votes
  1
  Posts
  1
  Views

  No one has replied