Competition Coating Pistons ??

[SBartel]

Who do you guy reccomend getting pistons and other friction parts coated by?? websites would be a big help



Thanks Shaun

 

[Jong]

Rumor has it that www.polydyn.com and www.swaintech.com have pretty good engine part coatings.

 

[SBartel]

Thanks Alot!

 

[WUnderwood]

I have heard good things about the coatings at Polydyn, where the coatings helped not melt the pistons with extreme EGT's. Polydyn does coatings on the tops(green color) and sides(Teflon) of the pistons.

 

[RobertP]

I have heard good things about the coatings at Polydyn, where the coatings helped not melt the pistons with extreme EGT's. Polydyn does coatings on the tops(green color) and sides(Teflon) of the pistons.

the only problem seen with teflon is that it will flake off and clog oil passages---it has been seen several times in HP gas engines, including nascar.

 

[MDW]

I have been running Polydyn coated stuff for years. Never had one failure. They have a unique bonding process that is very durable.



The only thing I don't like is yall are finding out about they and I am losing my advantage.

Anybody ever wonder why I get away with very high egt's without a failure?

Now you know. But, don't change the way you tune your combo, just think of the coating as a safety factor.



Michael



http://www.hotroddiesels.com/images/engine-build/

 

[JasonCzerak]

why just pistons?



Anyone coat the underside of the head and valves.



I'm sure coating the cylinder walls wouldn't work out with the rings scrapping on them

 

[WUnderwood]

why just pistons?



Anyone coat the underside of the head and valves.



I'm sure coating the cylinder walls wouldn't work out with the rings scrapping on them

yes, they can coat valves, and inside the cylinder head also

 

[PSU-CE]

I've used these guys with no problems:



High Performance Coatings

 

[MotleyCrueCab]

I used to work at a porting shop, and I did all of the coatings. My experences: If you coat the piston always coat the head and valves. If you don't the coating on the piston reflects the heat back up into the head. This probally isn't as much of an issue with cast iron heads, but still something to be aware of. The coating does make a substancial difference, however it won't last forever. It doen't really hold up on a steet truck/car due to the number of miles put on it, so i would only recomend it on a competition truck, otherwise your just wasting your money.

 

[Stefan Kondolay]

We use calicoat for all our race motors, pistons and bearings, they are very knowledgeable and good company to deal with.

 

[Chester8420]

http://www.techlinecoatings.com/

 

[BBunting]

I have been running Polydyn coated stuff for years. Never had one failure. They have a unique bonding process that is very durable.



The only thing I don't like is yall are finding out about they and I am losing my advantage.

Anybody ever wonder why I get away with very high egt's without a failure?

Now you know. But, don't change the way you tune your combo, just think of the coating as a safety factor.



Michael



http://www.hotroddiesels.com/images/engine-build/

I cracked three Polydyn coated pistons. Motor saw 2000 degrees every pull. One piston wasn't coated (broke before Indy), and it didn't crack. We didn't coat the heads, and the heads were cracked between the valves in three spots, and not the cracked piston holes. This was a Ford 7. 3.



We moved to HPC now.

 

[MDW]

BBunting



Good Luck to ya

 

[Bodie]

What kind of EGTs are the guys running these coatings able to run regularly?

 

[WUnderwood]

supposedly 2000+ degrees, I have my exhaust manifold and exhaust side of my turbo coated, and no problems so far

 

[Bodie]

supposedly 2000+ degrees, I have my exhaust manifold and exhaust side of my turbo coated, and no problems so far

Did Swaintech do it? Just figured with them being in Houston. Did you only coat the exhaust side of the t-bo?

 

[WUnderwood]

no, Polydyn did the coatings.

I coated the exhaust manifold and the exhaust side of the turbo, to keep the heat in, look good, and a little performance