Coated forged .030 pistons or not...
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Joined: Dec 1999
Posts: 3,853
From: Jupiter (NPB), Fl
No offense man, but if you keep asking all these ?'s you're never going to get an engine together.
Quite a few of us, I think even Bret have given you some recommended setups, and you keep going around in circles asking the same types of questions...
Quite a few of us, I think even Bret have given you some recommended setups, and you keep going around in circles asking the same types of questions...
Thread Starter
Registered User
Joined: Aug 2005
Posts: 4,405
From: Kantuckee Yo'
I am trying to make very informed decisions from the knowledgeable folk in the forum so that I get the setup that fits me best. Plus I am in no hurry to get it done.
Plus I am sure that other people may be interested in knowing the answer to this question, therefore it is not a stupid question.
If you have something constructive to add, then please do. If you want to chastise me then please dont waste your time.
Now back on topic.
Last edited by wrd1972; Jan 8, 2007 at 12:51 PM.
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Joined: Nov 1998
Posts: 71,121
From: Hell was full so they sent me to NJ
What kind of coatings? There are heat retention coatings for the crown, and moly coatings for the skirts. To me, the moly coatings are a good idea. The benefit of the crown coatings on anything other than a top-end, max HP effort is questionable. There are discussion of the subject in threads on the Advanced Tech forum.
Forged pistons are mandatory for "power adder" applications..... nitrous, S/C, turbo. Not essential for NA buildups. Hypereutectics can be lighter and dimensionally more stable.
0.030" over is only useful if you've had your block bored 0.030" over.
Forged pistons are mandatory for "power adder" applications..... nitrous, S/C, turbo. Not essential for NA buildups. Hypereutectics can be lighter and dimensionally more stable.
0.030" over is only useful if you've had your block bored 0.030" over.
Thread Starter
Registered User
Joined: Aug 2005
Posts: 4,405
From: Kantuckee Yo'
What kind of coatings? There are heat retention coatings for the crown, and moly coatings for the skirts. To me, the moly coatings are a good idea. The benefit of the crown coatings on anything other than a top-end, max HP effort is questionable. There are discussion of the subject in threads on the Advanced Tech forum.
Forged pistons are mandatory for "power adder" applications..... nitrous, S/C, turbo. Not essential for NA buildups. Hypereutectics can be lighter and dimensionally more stable.
0.030" over is only useful if you've had your block bored 0.030" over.
Forged pistons are mandatory for "power adder" applications..... nitrous, S/C, turbo. Not essential for NA buildups. Hypereutectics can be lighter and dimensionally more stable.
0.030" over is only useful if you've had your block bored 0.030" over.
I can get the "house brand" which is an uncoated Mahle pistont, bout all I know.
I am getting parts at cost through a friend.
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Joined: Feb 2004
Posts: 1,154
From: VA
Hey, at least this one isn't a FAQ like most of his threads...
Registered User
Joined: Jan 2001
Posts: 368
From: Indianapolis, IN
Well, to stay on task....my Diamond pistons are coated. Polydyn heat rejection on the crowns and anti-friction on the skirts. Here's a pic. I don't know how much power it is worth, but I was building a nice motor with good parts and it was a small price to pay, even if it was only worth 3-5hp. My setup is built for nitrous, so I'm thinking they will be of benefit with the high cylinder pressures and heat issues when I spray a 200 on top of what I have.
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