B20B, B20Z piston rings are the same?
09-17-2015, 07:30 PM
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B20B, B20Z piston rings are the same?
I am going to rebore my B20Z + .25mm, but as I run turbo I would like B20B pistons .
Rings + .25 for B20B 13021-P3F-003 are not available anymore, I would like to know if those for B20Z 13021-PHK-003 are exactly the same, if the only difference it is the part number?
Thank you very much..
Laurent
Rings + .25 for B20B 13021-P3F-003 are not available anymore, I would like to know if those for B20Z 13021-PHK-003 are exactly the same, if the only difference it is the part number?
Thank you very much..
Laurent
09-18-2015, 06:09 AM
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Re: B20B, B20Z piston rings are the same?
I would check the helm manual, there should be specs for inspecting the rings. That should give you an idea if they are the interchangeable or not.
Dammit, I have a set of .25os PHK pistons and rings back in Florida. I have no idea which box I put them in though.
Dammit, I have a set of .25os PHK pistons and rings back in Florida. I have no idea which box I put them in though.
09-18-2015, 10:22 AM
#5
Re: B20B, B20Z piston rings are the same?
Ok. I'll recirculate the argument. The ONLY difference between the two is the compression ratio and dome height. As a manufacturer of millions of units, it is a matter of logic that you use the same set of rings for the engine unless it is specialty. So, it means YES, they use the same stuff. A helms will confirm it, but as a matter of production schedule and vendor use, YES.. Yes.. and did I mention, YES? 
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