CPT 836 Pistons?

Mdavies_02 · Apr 10, 2019

Anyone know what pistons the CPT 836 are using? with the 4MM PHP crank

http://www.x-h2o.com/index.php?threads/836cc-62t-4mm-stroker-complete-short-block-2800.159895/

They are modified Wossner, and/or Wiseco and I am looking at getting another pair however not sure what they were originally out of. I have tried contact Chuck however I have yet to hear back

If anyone knows please let me know otherwise I have to do some serious research after getting precise measurements from a machine shop

Thanks in advance

Mike

Harbor · Apr 11, 2019

Saw a phone number in his signature line. ?

Mdavies_02 · Apr 11, 2019

I’m about 6 more calls from being blocked. I’ve been trying to get in touch for some time via the X, phone calls, text, and fb messenger.

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Req · Apr 11, 2019

According to this they use 85 or 86mm pistons, I think we are talking 760 pistons.

http://www.x-h2o.com/index.php?threads/836cc-62t-4mm-stroker-complete-short-block-2800.159895/

The piston mod may be something like putting windows in the pistons, I think HPE does something similar to that on his version of this engine.

Here is someone measuring a set of pistons on a HPE with the windows cut.

Dont quote me on this, I know nothing.....

Storbeck · Apr 11, 2019

I think you accidentally posted the same link twice.

Req said:
According to this they use 85 or 86mm pistons, I think we are talking 760 pistons.

http://www.x-h2o.com/index.php?threads/836cc-62t-4mm-stroker-complete-short-block-2800.159895/

The piston mod may be something like putting windows in the pistons, I think HPE does something similar to that on his version of this engine.

Here is someone measuring a set of pistons on a HPE with the windows cut.

http://www.x-h2o.com/index.php?threads/836cc-62t-4mm-stroker-complete-short-block-2800.159895/

Dont quote me on this, I know nothing.....

Req · Apr 11, 2019

Storbeck said:
I think you accidentally posted the same link twice.

Fixed, thanks.

Storbeck · Apr 11, 2019

Did anybody else cringe hard and wish that guy would get a proper wrist pin puller?

Mdavies_02 · Apr 11, 2019

Disregard the original post. Chuck got in touch with me today. Apparently they are just Yamaha 760 pistons that he modifies.

I’ll get them early next week. Brap time.

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