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Author Topic: where is it all going to end?  (Read 580 times)

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Offline turboguzzi

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where is it all going to end?
« on: February 18, 2019, 04:46:05 am »
what's next, carbon pistons? :)


Offline Tintop

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Re: where is it all going to end?
« Reply #1 on: February 18, 2019, 05:46:26 am »
Well that's certainly reduced to the minimum! :o  What is the application TG?
1977 CB550/4 Cafe - Speed Warrior / BOTM 03/11
1980 CB750F (project)
Whittaker GBF Vintage Racing Sidecar (XS750 power) - ITG / 151's / CMR Racing Products (SOLD)
1976 CB400 SS - stock / BOTM 04/11 (SOLD)
1973 CB750 K - basket case (SOLD)
77 CB550 Cafe build
550/750 Filter Thread
Sidecar Rebuild Thread

Offline MRieck

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Re: where is it all going to end?
« Reply #2 on: February 18, 2019, 05:57:25 am »
I'd say 4 stroke motocross
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Offline bwaller

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Re: where is it all going to end?
« Reply #3 on: February 18, 2019, 06:10:02 am »
Pretty and disposable.

Offline slikwilli420

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Re: where is it all going to end?
« Reply #4 on: February 18, 2019, 06:26:03 am »
Id have a thermal coating on the top of the piston to keep heat in the chamber. They look cool as hell, would be great for a road racer, if someone else was paying the bills!!
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline turboguzzi

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Re: where is it all going to end?
« Reply #5 on: February 18, 2019, 07:14:23 am »
I believe it's wsbk Panigale stuff.

Offline slikwilli420

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Re: where is it all going to end?
« Reply #6 on: February 18, 2019, 08:28:06 am »
I believe it's wsbk Panigale stuff.

So someone else is paying the bills. Haha.
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline Cb750 Racer

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Re: where is it all going to end?
« Reply #7 on: February 18, 2019, 10:44:30 am »
I think Wiseco had it right with their caged piston design. Though I haven't heard anything new about them in quite a few years so the end result couldn't have been THAT good. That piston above needs to see a doctor she's a little to anorexic for me  ;)
1972 Honda CB750 AAMRR Racer
1972 Suzuki GT750 Project
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1981 Kawasaki KZ750 LTD
1984 Kawasaki GPZ550 =>610cc
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Offline simon#42

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Re: where is it all going to end?
« Reply #8 on: February 18, 2019, 10:51:59 am »
somewhere i have a couple of pistons left over from one of the foggy petronas bikes , it is so shallow you have to take the rings off to remove the gudgeon pin .
they didnt last long .

Offline bwaller

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Re: where is it all going to end?
« Reply #9 on: February 18, 2019, 03:14:26 pm »
That is always the question/dilemma. Do you want ultra light & cool, (ring holder) or something that will last a while.

I guess it depends on whether it's MotoGP or old guys racing vintage.  ;D

I wonder if that piston is steel?

Offline Sam Green Racing

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Re: where is it all going to end?
« Reply #10 on: February 18, 2019, 04:01:22 pm »
somewhere i have a couple of pistons left over from one of the foggy petronas bikes , it is so shallow you have to take the rings off to remove the gudgeon pin .
they didnt last long .

Bad news Simon, no more servicing my Ferrari Eco Active, I got a new set of ultra light wheels today. :'( :'( :'(
C95 sprint bike.
CB95 hybrid race bike
CB95 race bike
CB92
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JMR Racing CB750A street ET drag bike

Offline MRieck

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Re: where is it all going to end?
« Reply #11 on: February 18, 2019, 04:12:29 pm »
That is always the question/dilemma. Do you want ultra light & cool, (ring holder) or something that will last a while.

I guess it depends on whether it's MotoGP or old guys racing vintage.  ;D

I wonder if that piston is steel?
I was wondering the same thing Brent
Owner of the "Million Dollar CB"

Offline Tintop

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Re: where is it all going to end?
« Reply #12 on: February 18, 2019, 04:23:00 pm »
That is always the question/dilemma. Do you want ultra light & cool, (ring holder) or something that will last a while.

I guess it depends on whether it's MotoGP or old guys racing vintage.  ;D

I wonder if that piston is steel?
I was wondering the same thing Brent

Ti maybe? given the application.
1977 CB550/4 Cafe - Speed Warrior / BOTM 03/11
1980 CB750F (project)
Whittaker GBF Vintage Racing Sidecar (XS750 power) - ITG / 151's / CMR Racing Products (SOLD)
1976 CB400 SS - stock / BOTM 04/11 (SOLD)
1973 CB750 K - basket case (SOLD)
77 CB550 Cafe build
550/750 Filter Thread
Sidecar Rebuild Thread


Offline Tracksnblades1

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Re: where is it all going to end?
« Reply #14 on: February 18, 2019, 06:16:30 pm »
What amazes me is how this new technology always has a seed from the past.
Remember 4 valves per cylinder being cutting technology, but had flown overhead for years before.
I borrowed the picture from macvit7906 post under "mystery engine".
It's believed to be an antique Yoshimura two ring design.
« Last Edit: February 18, 2019, 11:42:41 pm by Tracksnblades1 »
Age Quod Agis

Offline seanbarney41

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Re: where is it all going to end?
« Reply #15 on: February 18, 2019, 06:34:28 pm »
It's believed to be an antique Yoshimura two ring design.
Why would we believe that when it says RSC right on it?
If it works good, it looks good...

Offline Tracksnblades1

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Re: where is it all going to end?
« Reply #16 on: February 18, 2019, 08:59:59 pm »
It's believed to be an antique Yoshimura two ring design.
Why would we believe that when it says RSC right on it?

Yep,
So much for reading posts....?
And the like for cb350 below...
😩
« Last Edit: February 18, 2019, 09:14:56 pm by Tracksnblades1 »
Age Quod Agis

Offline simon#42

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Re: where is it all going to end?
« Reply #17 on: February 19, 2019, 10:47:43 am »
somewhere i have a couple of pistons left over from one of the foggy petronas bikes , it is so shallow you have to take the rings off to remove the gudgeon pin .
they didnt last long .

Bad news Simon, no more servicing my Ferrari Eco Active, I got a new set of ultra light wheels today. :'( :'( :'(

that is bad news sam , will come over to see you one night .

Offline Sam Green Racing

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Re: where is it all going to end?
« Reply #18 on: February 19, 2019, 11:50:51 am »
Any time mate, the kettle is always on for you Simon.
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 Tracksnblades1

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Re: where is it all going to end?
« Reply #19 on: February 19, 2019, 02:55:21 pm »
I think Wiseco had it right with their caged piston design. Though I haven't heard anything new about them in quite a few years so the end result couldn't have been THAT good. That piston above needs to see a doctor she's a little to anorexic for me  ;)

Is mum the word for wiseco...?
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Offline Don R

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Re: where is it all going to end?
« Reply #20 on: February 19, 2019, 03:36:50 pm »
 I have an 8.1L gm gas motor in my GMC duallie truck it's got slipper skirt pistons and they didn't get the bores correct. I've been listening to piston slap longer than I care to. Should have paid for the diesel, at least there would be a reason for the noise. These would have been better with some skirts. GM removed the piston to cylinder clearance spec from their manuals to solve the problem. 
Oops, should have posted in the PO'ed thread.
If the things you own end up owning you, it's better to be owned by some cool things.

 

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