« previous next »
Pages: 1 [2]  All   Go Down

Author Topic: Wrist pin bias.  (Read 4231 times)

0 Members and 1 Guest are viewing this topic.

Offline Sam Green Racing

  • Really Old Timer ...
  • *******
  • Posts: 16,068
  • I REALLY? hate black rims.
Re: Wrist pin bias.
« Reply #25 on: August 29, 2005, 12:36:42 PM »
 ???
Logged
C95 sprint bike.
CB95 hybrid race bike
CB95 race bike
CB92
RS 175. sprint/land speed bike
JMR Racing CB750A street ET drag bike

Offline Jonesy

  • Shop Rat
  • Old Timer
  • ******
  • Posts: 2,648
  • "Damn! These HM300 Pipes Are Expensive!!!"
Re: Wrist pin bias.
« Reply #26 on: August 29, 2005, 02:18:31 PM »
Here's why Honda claims they did it. Thought you guys might find this interesting...
Logged
"Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles; it makes me take another look." -Steve McQueen

Offline Bob Wessner

  • "Carbs Suck!"
  • Really Old Timer ...
  • *******
  • Posts: 10,079
Re: Wrist pin bias.
« Reply #27 on: August 29, 2005, 02:22:02 PM »
That is interesting. You get the impression they put some thought into these bikes.  ;D
Logged
We'll all be someone else's PO some day.

Offline MRieck

  • Really Old Timer ...
  • *******
  • Posts: 10,565
  • Big ideas....
Re: Wrist pin bias.
« Reply #28 on: August 29, 2005, 04:50:19 PM »
I see your point Sam. Is that large exhaust cut out there because of the chamber shape? I don't know. I wish there was a close up picture.
Logged
Owner of the "Million Dollar CB"

Offline Sam Green Racing

  • Really Old Timer ...
  • *******
  • Posts: 16,068
  • I REALLY? hate black rims.
Re: Wrist pin bias.
« Reply #29 on: August 29, 2005, 05:04:23 PM »
All the pistons for all of these motors have a larger cut out for the inlet valve.
The combstion chambers are all the same as are the valves and valve angles apart from a squish band in the 154 motor to take the 5mm bigger pistons.
Although the pistons in the pic are much higher compression (8.7 up to 10 to 1) I still can't get my head round this big recesse for a small exhaust valve.
If they where Honda pistons I would put them in without a dought, but aftermarket thats another thing.
I will have to get the plastigauge on the job to be sure.

Thanks guys.

Sam.
Logged
C95 sprint bike.
CB95 hybrid race bike
CB95 race bike
CB92
RS 175. sprint/land speed bike
JMR Racing CB750A street ET drag bike

Offline MRieck

  • Really Old Timer ...
  • *******
  • Posts: 10,565
  • Big ideas....
Re: Wrist pin bias.
« Reply #30 on: August 29, 2005, 05:35:19 PM »
Quote from: samcr750 on August 29, 2005, 05:04:23 PM


Although the pistons in the pic are much higher compression (8.7 up to 10 to 1) I still can't get my head round this big recesse for a small exhaust valve.
If they where Honda pistons I would put them in without a dought, but aftermarket thats another thing.


Sam.
I agree with the "aftermarket" part Sam and it would bother me about the valve relief.
Logged
Owner of the "Million Dollar CB"

Offline Sam Green Racing

  • Really Old Timer ...
  • *******
  • Posts: 16,068
  • I REALLY? hate black rims.
Re: Wrist pin bias.
« Reply #31 on: August 29, 2005, 05:45:18 PM »
Mike if I could find a genuine Honda one to compare it would be good but the place I thought I could get them, Ohio Cycle, Turned out theirs are aftermarket as well.

Sam.
Logged
C95 sprint bike.
CB95 hybrid race bike
CB95 race bike
CB92
RS 175. sprint/land speed bike
JMR Racing CB750A street ET drag bike

Offline Sam Green Racing

  • Really Old Timer ...
  • *******
  • Posts: 16,068
  • I REALLY? hate black rims.
Re: Wrist pin bias.
« Reply #32 on: September 05, 2005, 04:12:15 PM »
Hey mike, guess what! just bought a close ratio gearbox of a guy in the States and he had a set of genuine Honda pistons.
The good news is they are the same as the aftermarket ones I got, so work on the motor can go ahead.
I have everything to do it now apart from the correct carb, just missed one on ebay a few nights ago >:(
Maybe another one will turn up by the time it's ready to go into the chasis.

Sam.
Logged
C95 sprint bike.
CB95 hybrid race bike
CB95 race bike
CB92
RS 175. sprint/land speed bike
JMR Racing CB750A street ET drag bike

Offline MRieck

  • Really Old Timer ...
  • *******
  • Posts: 10,565
  • Big ideas....
Re: Wrist pin bias.
« Reply #33 on: September 05, 2005, 04:29:44 PM »
Great news Sam! That will keep you in good spirits for a few days I'd guess. ;)
Logged
Owner of the "Million Dollar CB"

Offline Sam Green Racing

  • Really Old Timer ...
  • *******
  • Posts: 16,068
  • I REALLY? hate black rims.
Re: Wrist pin bias.
« Reply #34 on: September 05, 2005, 04:33:34 PM »
Yeh, but when the money gets taken out the bank, it's doom and gloom again :(
Logged
C95 sprint bike.
CB95 hybrid race bike
CB95 race bike
CB92
RS 175. sprint/land speed bike
JMR Racing CB750A street ET drag bike

Offline MRieck

  • Really Old Timer ...
  • *******
  • Posts: 10,565
  • Big ideas....
Re: Wrist pin bias.
« Reply #35 on: September 05, 2005, 07:37:03 PM »
Quote from: samcr750 on September 05, 2005, 04:33:34 PM
Yeh, but when the money gets taken out the bank, it's doom and gloom again :(
Such is our lot in life Sam. ;) ;)
Logged
Owner of the "Million Dollar CB"
Pages: 1 [2]  All   Go Up
« previous next »