Datsun Roadster Forum-311s.org

I already sent the first batch of parts out! I am a big fan of MotoIQ. that shop has been using WPC coating in there comp cars and it appears like they really love the treatment. here is a link to the youtube video on a explanation of the treatment and walks through what they treat. pretty cool stuff! especially for the price. I should have asked before I sent parts out for treatment, but what do you use for treatment/coatings?

I don't get it I guess, blasting micro fine particles make it stronger ? Where's the test data , looks like they sandblasted the crank journals , & leave it that way, sounds strange
Manuf engineers it's a cut throat business , especially $$ engine performance ones, they are over paid it's a tough position to stay In , so if this really increased power or has significant other benefits without a bad side they would of course do it

It's kinda a rabbit hole trying to find hard data on it but this link shows Kojima write up on "why wpc". In the article it talks about oem and piston manufactures stating they researched and found results. They did not give the data though. I am a fan boy of Kojima and some of their drivers they supply engines to. So of course I want it!!!

http://wpctreatment.com/documents.htm

I have seen wpc mainly in Japan, usually on gearbox parts. I even have a couple of parts with a WPC finish, gearbox. Meant to improve the smoothness with changing gear. My understanding is the surface is prepped so there is less friction, and thus stress on the parts, and thus more efficiency. The WPC parts I have are a whole lot smoother than the parts not treated.

Gears ,syncros are so hardened they shatter in just a 2.5 ft drop I can't see anything changing that
As for more slippery metal parts oil is low on the slippery scale. There are chemicals friction modifiers, Teflon that do that

With the high cost of U20 rockers and the scarcity of cams, it would be something I might consider depending on price.

Gregs672000 wrote: Sat Dec 03, 2022 1:32 pm With the high cost of U20 rockers and the scarcity of cams, it would be something I might consider depending on price.

the cam was 90 dollars and i would assume rockers would be in the ball park of what they charged for my lifters which were 8 dollars per lifter. the cam and lifter I think are going to be money well worth spent. every engine that i have pulled apart cam and lifters are pretty toasty.

Irrelephant

Daryl Smith wrote: Sun Dec 04, 2022 2:46 pm Very interesting....
Here's an article from 2009:
https://www.motortrend.com/how-to/turp- ... treatment/

Definitely something to investigate....Too bad there seems to be only one place in North America.

yeah its just outside of LA. The cost i feel is a good deal but getting the parts there is pretty expensive. the crank I really want to be sent out after getting drilled but dang its going to be expensive shipping. Like Greg said rocker arms and shaft would be pretty nice to have treated as they are known to wear and i am sure would help with valve train losses.

The high lift of my Isky cam along with a B cam duration creates a steep ramp which has worn some of my rockers in the past. Seems like this treatment would be a good idea. I plan to have a little bit of the lift taken off the cam over the winter, and will strongly consider sending the cam and rocker for treatment afterwards. Thanks for posting.

Daryl Smith wrote: Sun Dec 04, 2022 2:46 pm Very interesting....
Here's an article from 2009:
https://www.motortrend.com/how-to/turp- ... treatment/

Definitely something to investigate....Too bad there seems to be only one place in North America.

Good article, expands what I knew already.

A quick look, something similar?;

http://www.hpsf.com.au/

The CASF process that HPSF has is a polishing process, the items are put in a vibrating ultrasonic tub filled with a media that leaves a really smooth surface when it is finished. It doesn't harden or change the molecular structure like the WPC process.

From reading their site and looking at the illustrations it gives the smooth surfaces a statin surface which is ruff er than polished but like new Babbet bearings that aren't smooth and hold on to oil more ....A friction modifing fluid is a step above...other than at start up , no engine moving metal part touches / scrapes another it all hyroplanes

Cryogenic treatment of engine parts may also be another way to go.
I've never done any engine components, but I have seen industrial tooling life increased substantially when the assembly details were treated.



Cheers
Ray B.

itsa68 wrote: Wed Dec 07, 2022 12:04 pm Cryogenic treatment of engine parts may also be another way to go.
I've never done any engine components, but I have seen industrial tooling life increased substantially when the assembly details were treated.



Cheers
Ray B.

MotoIQ did a good video about cryo treating. a little more cost prohibitive but cool. hahaha