wiseco or stock...how can i know
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wiseco or stock...how can i know
how can i know if it'S a wiseco piston or a kawi piston in my bike... at the moment the cylinder is off. I want to know if i have to change the piston ( if it'S a grenade) or if i just have to put some new rings.
KDX 220 2001 =)
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This question has been asked before..I've asked at least twice: 'How do they look different?'
SOME 220 rider out there has a picture of a Wiseco next to a Pro-X. Let's see it! NOS Wisecos that come off ebay..and 'new' ones, too.
Surely there is something enough different between the two that could be determined from a look in the exhaust port or intake.
juliend: Wiseco's DO have a PN on the piston crown? I've seen some that do..don't know if that means all of them do. Pro-Xs don't. At least not the 200 Pro-X pistons I've used.
It would be nice to have a definitive answer for telling the difference between the two. It's certainly come up quite a few times.
SOME 220 rider out there has a picture of a Wiseco next to a Pro-X. Let's see it! NOS Wisecos that come off ebay..and 'new' ones, too.
Surely there is something enough different between the two that could be determined from a look in the exhaust port or intake.
juliend: Wiseco's DO have a PN on the piston crown? I've seen some that do..don't know if that means all of them do. Pro-Xs don't. At least not the 200 Pro-X pistons I've used.
It would be nice to have a definitive answer for telling the difference between the two. It's certainly come up quite a few times.
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Great!
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- Julien D
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Every wiseco that I've seen, regardless of make, has a PN stamped on top of the piston crown. Also, there is a W inside the piston somewhere about the wrist pin area.. I can not think of anything that would give it away by looking through the exhaust port. As you said, we'd need more side by side shots. I will get some side by sides of my "nos" wiseco and my OEM pro-x as soon as my stuff gets back from langcourt.
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What's the intake skirt look like? I see part of it in the middle pic...
What are the two numbers? The long one is the PN? ...or the shorter.
..maybe a pic of the underside? I'd like to see what they use for pin oiling holes.
I'm quite sure the Pro-X has 'indents' or cut-a-ways at the pin boss. Couldn't see that with the piston in the cylinder, though.
Thanks!
What are the two numbers? The long one is the PN? ...or the shorter.
..maybe a pic of the underside? I'd like to see what they use for pin oiling holes.
I'm quite sure the Pro-X has 'indents' or cut-a-ways at the pin boss. Couldn't see that with the piston in the cylinder, though.
Thanks!
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Thanks!
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The longer number is the PN. The shorter? I dunno. Google doesn't say (in regard to Wiseco pistons anyway).
Maybe it's a batch number or sumthin'.
I've not seen different 'series' of Wiseco's pistons for the KDX. Is an 'M' different from some other type?
Maybe it's a batch number or sumthin'.
I've not seen different 'series' of Wiseco's pistons for the KDX. Is an 'M' different from some other type?
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The included directions say the piston to cylinder clearance must be 0.0025(0.064mm)
The directions also say if the cylinder has an exhaust bridge, the piston should contain lubrication holes on the skirt where it contacts the exhaust bridge. If the piston does not have the lubrication holes on the skirt, they must be drilled.
The directions also say if the cylinder has an exhaust bridge, the piston should contain lubrication holes on the skirt where it contacts the exhaust bridge. If the piston does not have the lubrication holes on the skirt, they must be drilled.
its a '04 KDX 220 cadillac
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Read that exhaust bridge note on the web.
That clearance is a minimum I'm sure.
I've never seen a clearance that close on a Pro-X. They have run around .005", even on a newly plated cylinder.
The point being the age-old cast vs: forged thing. A forged piston has a 'grain' to the metal, and so expands more than a cast piston does. GENerally...put a forged piston in a cylinder that has been machined/designed/honed to fit a CAST piston...and it's gonna stick.
That clearance is a minimum I'm sure.
I've never seen a clearance that close on a Pro-X. They have run around .005", even on a newly plated cylinder.
The point being the age-old cast vs: forged thing. A forged piston has a 'grain' to the metal, and so expands more than a cast piston does. GENerally...put a forged piston in a cylinder that has been machined/designed/honed to fit a CAST piston...and it's gonna stick.
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