facebook1 youtube1 twitter1 instagram linkedin1 pinterest1

NOTICE:  If you are not a free registered member of the site, you will not see the photos in the forum, and you won't be able to access our premium member content. Please consider joining our community! REGISTER AND MAKE THIS BOX DISAPPEAR!

Porting a 1975 YT 175

  • RacerClam
  • RacerClam's Avatar Topic Author
  • Offline
  • Platinum Member
  • Platinum Member
  • Posts: 563
  • Likes received: 376

Porting a 1975 YT 175 was created by RacerClam

I'm currently porting a TY 175 for a customer who competes in vintage trials. But the problem for him is that it performed like a moped without pedals. So I have done much work to help with that problem including installing a case port that will dramatically improve the snap he desires , along with exaust port , boost port and transfer port mods. It looks racy but the timing is mild. Also will be installing a 28mm VM carb with 6 venture dividers and a ufo.

Rich




racerclam
The following user(s) Liked this Post: FrankC
14 Jul 2016 14:00 #1

This message has attachments images.
Please log in or register to see it.

Please Log in or Create an account to join the conversation.

  • RacerClam
  • RacerClam's Avatar Topic Author
  • Offline
  • Platinum Member
  • Platinum Member
  • Posts: 563
  • Likes received: 376

Replied by RacerClam on topic Porting a 1975 YT 175

More pics that didn't fit

Rich


racerclam
The following user(s) Liked this Post: FrankC
14 Jul 2016 14:02 #2

This message has attachments images.
Please log in or register to see it.

Please Log in or Create an account to join the conversation.

  • RacerClam
  • RacerClam's Avatar Topic Author
  • Offline
  • Platinum Member
  • Platinum Member
  • Posts: 563
  • Likes received: 376

Replied by RacerClam on topic Porting a 1975 YT 175

Big oops! I titled it a YT not a TY Forgive me

Rich
racerclam
The following user(s) Liked this Post: FrankC
14 Jul 2016 14:04 #3

Please Log in or Create an account to join the conversation.

  • Posts: 5670
  • Likes received: 2058

Replied by RT325 on topic Porting a 1975 YT 175

yeah YT--3 wheeler-- had me worried as they're dangerous enough in std trim. TY--i have a TY cylinder on my old AT1 piston port 125. Think i have a base plate under it due to conrod length & couldn't be bothered changing it. In fact the bottom end has never been apart since new. Anyway--TY top end goes very much better on this than as a trials bike possibly due to the trail exhaust & 28 carb & has 'willing' top end & over-rev. AT1 pipe i gutted about 35 years ago when it got choked up. Very interesting looking at porting changes from people that know what the're doing!! & thanks for posting. Hope he has a clean exhaust even if it's a std TY pipe--exhaust & tail pipe muffler especially the spark arrestor bit down the end.
The following user(s) Liked this Post: FrankC
14 Jul 2016 15:57 #4

Please Log in or Create an account to join the conversation.

  • Posts: 1467
  • Likes received: 454

Replied by FrankC on topic Porting a 1975 YT 175

Exemplary work Rich. :OnFire
The following user(s) Liked this Post: RacerClam
14 Jul 2016 18:02 #5

Please Log in or Create an account to join the conversation.

  • RacerClam
  • RacerClam's Avatar Topic Author
  • Offline
  • Platinum Member
  • Platinum Member
  • Posts: 563
  • Likes received: 376

Replied by RacerClam on topic Porting a 1975 YT 175

thank you very much

Rich
racerclam
14 Jul 2016 19:27 #6

Please Log in or Create an account to join the conversation.

  • Posts: 1
  • Likes received: 0

Replied by Bigpumpingunit on topic Porting a 1975 YT 175

How did this turn out?

Were the porting modifications suited to trials riding?
22 Feb 2021 18:08 #7

Please Log in or Create an account to join the conversation.

  • RacerClam
  • RacerClam's Avatar Topic Author
  • Offline
  • Platinum Member
  • Platinum Member
  • Posts: 563
  • Likes received: 376

Replied by RacerClam on topic Porting a 1975 YT 175

Turned out gerat !  Very suited for trials . He competes in vintage trials. I can port for any application.

Rich
racerclam
The following user(s) Liked this Post: Snglsmkr
23 Feb 2021 12:11 #8

Please Log in or Create an account to join the conversation.

Moderators: yamadminEnduronutMakotosunDEETVinnieDevinJames Hart