Piston Ident

TVRTASMIN · Post by **TVRTASMIN** » Thu May 08, 2008 6:57 am

I've just bought a set of used 3.9 pistons with HRC22069A cast into them, with 22059 ZO1 M6 and My stamped on the crown.
Need to know the CR.

Cheers
Ian

TVRleigh · Post by **TVRleigh** » Thu May 08, 2008 2:24 pm

The 4.0 piston I have with M6 on them are 9.35/1

But not sure if that's what M6 means.

Leigh

Boosted LS1 · Post by **Boosted LS1** » Thu May 08, 2008 9:18 pm

TVRTASMIN wrote:I've just bought a set of used 3.9 pistons with HRC22069A cast into them, with 22059 ZO1 M6 and My stamped on the crown.
Need to know the CR.

Cheers
Ian

Didn't you think to ask before you bought them? Can you ask the seller?

TVRTASMIN · Post by **TVRTASMIN** » Fri May 09, 2008 8:40 pm

To be honest i didn't think to ask prior to purchase, but have sent the seller an email to which i have'nt received a reply yet.

Don't suppose i can complain much for £5.50 the set.

Boosted LS1 · Post by **Boosted LS1** » Fri May 09, 2008 8:49 pm

Heck that was cheap, lucky you!

TVRTASMIN · Post by **TVRTASMIN** » Mon May 12, 2008 7:14 am

That's Ebay for you.
Sometimes you can strike lucky.

TVRTASMIN · Post by **TVRTASMIN** » Mon May 12, 2008 7:16 am

Maybe there is another way to tell which CR the pistons are.
Is there any piston data or dimensions i can check?

Post by **katanaman** » Mon May 12, 2008 9:50 am

Measure the volume with a burette, a picture might even works wonders as they are visibly different between high and low compression.

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Piston Ident

Piston Ident

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