S&K pistons

oldbikedude · Post by **oldbikedude** » Wed Jul 22, 2015 7:29 pm

Anyone have anything to say about them? Good or bad?

LOUD MOUSE · Post by **LOUD MOUSE** » Wed Jul 22, 2015 7:34 pm

I have used them and sold them.
Other than the wrist pin hole is a bit tight (it can easily be enlarged to fit the pin) they work well. ......................lm

oldbikedude wrote:Anyone have anything to say about them? Good or bad?

Tim Miller · Post by **Tim Miller** » Wed Jul 22, 2015 8:25 pm

They need more clearance than ART's. I always go with .0025" on S&K's. This could be why the pin bores are a little tighter. But if sleeves are not tight it will likely sieze no matter what you do. Oh yeah, get a timing light and make sure the total ignition timing is correct, too.

Tim

oldbikedude wrote:Anyone have anything to say about them? Good or bad?

LOUD MOUSE · Post by **LOUD MOUSE** » Wed Jul 22, 2015 9:26 pm

AS usual I see you are jamming!!!!!!!!!!!!!!!. ............lm

Tim Miller wrote:They need more clearance than ART's. I always go with .0025" on S&K's. This could be why the pin bores are a little tighter. But if sleeves are not tight it will likely sieze no matter what you do. Oh yeah, get a timing light and make sure the total ignition timing is correct, too.

Tim

oldbikedude wrote:Anyone have anything to say about them? Good or bad?

oldbikedude · Post by **oldbikedude** » Thu Jul 23, 2015 6:34 pm

But if sleeves are not tight it will likely sieze no matter what you do.

I am not sure I understand this statement & are they different composition from stock pistons?

Tim Miller · Post by **Tim Miller** » Thu Jul 23, 2015 7:09 pm

What I'm saying is if your cast iron cylinder sleeves aren't tight enough there's no place for piston heat to transfer. And that can cause piston to sieze.
S&K's do seem to grow more then stock. So, yes the alloy must be a little different. I use .002 for stock and like I said .0025 for S&K's. Hope this helps.

Tim

oldbikedude wrote:
But if sleeves are not tight it will likely sieze no matter what you do.
I am not sure I understand this statement & are they different composition from stock pistons?

LOUD MOUSE · Post by **LOUD MOUSE** » Thu Jul 23, 2015 8:57 pm

I've sent you 2 PM to call me.
If you don't want help send back a message saying so. ...........lm

oldbikedude wrote:
But if sleeves are not tight it will likely sieze no matter what you do.
I am not sure I understand this statement & are they different composition from stock pistons?

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