New BW EFR Turbo Thread
For example, the valve tappets looked exactly the same as a non-treated tappet with any miles on it.
I did the little test of 2 valve tappets spinning on top of each other and the WPC treated ones spun significantly longer than the non-treated tappets. There is definitely a reduction in friction while the treated surface is intact. However, that was immediately after I received them from being treated and before they went into the motor.
I have zero interest in trying to ruin WPC's name as I know there are people who have had success with it. I am just sharing my opinion
I did the little test of 2 valve tappets spinning on top of each other and the WPC treated ones spun significantly longer than the non-treated tappets. There is definitely a reduction in friction while the treated surface is intact. However, that was immediately after I received them from being treated and before they went into the motor.
I have zero interest in trying to ruin WPC's name as I know there are people who have had success with it. I am just sharing my opinion
Personally, I am just looking for data. Since the pics WPC has on their site of the WPC treatment are under significant magnification, I was curious as to what degree you were observing things...eyeballs/magnification/etc.
So, if you are able to provide that with photos or other data, I am all ears
problem with WC type treatments is these companies do not divulge how they actually process the parts. they will happily take your money for treating anything you want. without knowing exactly what they are doing how can logically deduce its gonna do something worth the coin? for instance we know crank journals will look like chrome after being treated. but is it beneficial in some way given after very short (~ 1000 miles) use the journals will no longer look like chrome?
problem with WC type treatments is these companies do not divulge how they actually process the parts. they will happily take your money for treating anything you want. without knowing exactly what they are doing how can logically deduce its gonna do something worth the coin? for instance we know crank journals will look like chrome after being treated. but is it beneficial in some way given after very short (~ 1000 miles) use the journals will no longer look like chrome?
Here's at least a thread (granted it's on a motorcycle) that tries to do some of that:
http://www.tz250.com/forums/showthre...-your-cake-an&
problem with WC type treatments is these companies do not divulge how they actually process the parts. they will happily take your money for treating anything you want. without knowing exactly what they are doing how can logically deduce its gonna do something worth the coin? for instance we know crank journals will look like chrome after being treated. but is it beneficial in some way given after very short (~ 1000 miles) use the journals will no longer look like chrome?
It forms a micro-dimple which allows oil to be retained better than a polished surface.
The surface area is increased, but the contact surface area is reduced. After treatment the surface will look matte (high Ra).
WPC Japan can also DLC (Diamond like carbon) coat items, which makes them significantly harder and wear resistant. You can attack these parts with a knife and they dont scratch (I've tried it myself).
While the appearance of a treated item after use may not look matte anymore, i'm sure the benefits are still there.
I would guess the reason why they dont explain exactly how it's done it because that's the patented information. If they did - other companies could likely replicate it. Media type and media blasting speed are crucial here. They also do a "Moly-Shot" where they treat the items with Moly Disulfide media and it binds to the surface. Perfect for piston skirts and mains/rod/thrust bearings, and any other soft materials (aluminium etc).
Cheers, Mike
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Joined: May 2012
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From: Bulgaria
Personally I got my self EFR7163 for my car, but it is Fiat 16vt, yet not ready.
Had another project made, Lancia Delta Integrale with EFR7670 IWG T3, all I can say is the driving feel is more sharper than the car project with the same engine I did with evo IX turbo.
Best regards
Iliyan
WPC is literally just shot peening. It has the EXACT same material effect as any standard shot peening process. It compresses the surface material to help reduce surface defects and remove residual surface tension stress.
The only difference between WPC and standard shot peening is media size and velocity. They use a smaller media at a higher velocity. You don't need to know particulars here unless you are well informed on shot peening specifics. All you need to know is the net effect is a finer surface finish with a lower RA (over a standard shot peened surface finish).
Does it work? Sure...so does shot peening.
Does it work better then standard shot peening? Yes as it will make the surface compressive stress more even. There are ASME and SAE papers on this topic if you care that much. WPC is just a trade mark name for a process that is used in many industries under other companies. It's nothing special to them. There are other methods that are used as well to do the same thing (laser and water methods exist as well).
Is it worth the money or become worthless with minimal wear? No idea.
The only difference between WPC and standard shot peening is media size and velocity. They use a smaller media at a higher velocity. You don't need to know particulars here unless you are well informed on shot peening specifics. All you need to know is the net effect is a finer surface finish with a lower RA (over a standard shot peened surface finish).
Does it work? Sure...so does shot peening.
Does it work better then standard shot peening? Yes as it will make the surface compressive stress more even. There are ASME and SAE papers on this topic if you care that much. WPC is just a trade mark name for a process that is used in many industries under other companies. It's nothing special to them. There are other methods that are used as well to do the same thing (laser and water methods exist as well).
Is it worth the money or become worthless with minimal wear? No idea.
WPC is literally just shot peening. It has the EXACT same material effect as any standard shot peening process. It compresses the surface material to help reduce surface defects and remove residual surface tension stress.
The only difference between WPC and standard shot peening is media size and velocity. They use a smaller media at a higher velocity. You don't need to know particulars here unless you are well informed on shot peening specifics. All you need to know is the net effect is a finer surface finish with a lower RA (over a standard shot peened surface finish).
Does it work? Sure...so does shot peening.
Does it work better then standard shot peening? Yes as it will make the surface compressive stress more even. There are ASME and SAE papers on this topic if you care that much. WPC is just a trade mark name for a process that is used in many industries under other companies. It's nothing special to them. There are other methods that are used as well to do the same thing (laser and water methods exist as well).
Is it worth the money or become worthless with minimal wear? No idea.
The only difference between WPC and standard shot peening is media size and velocity. They use a smaller media at a higher velocity. You don't need to know particulars here unless you are well informed on shot peening specifics. All you need to know is the net effect is a finer surface finish with a lower RA (over a standard shot peened surface finish).
Does it work? Sure...so does shot peening.
Does it work better then standard shot peening? Yes as it will make the surface compressive stress more even. There are ASME and SAE papers on this topic if you care that much. WPC is just a trade mark name for a process that is used in many industries under other companies. It's nothing special to them. There are other methods that are used as well to do the same thing (laser and water methods exist as well).
Is it worth the money or become worthless with minimal wear? No idea.
Just curious.
There aren't "channels" in the metal. There are dimples left from where the media hits the surface. EXACTLY the same as shot peening, just smaller dimples. Are they sized at the level that surface tension has a stronger effect and provides additional effectiveness of the oil? No idea. Possible.
All my post was about though is explaining that WPC isn't some form of magic. It's a sub-segment of shot peening which has been proven through decades of use to be effective at improving material strength.
A shot peened part will look different after use just like the WPC part will. It doesn't mean the treatment is no longer there though. I would believe however that the claims all revolving around surface finish are likely gone by that point though. But the grain refinement that took place in the treatment is still there...but is it any different then standard shot peening at that point?
FWIW, not all shot peening is the same so comparing it to one form of peening, sure it might have substantial benefits over it. Compared to a more refined peening process (smaller media and higher velocity...lol) though...diminishing gains, IMO.
All my post was about though is explaining that WPC isn't some form of magic. It's a sub-segment of shot peening which has been proven through decades of use to be effective at improving material strength.
A shot peened part will look different after use just like the WPC part will. It doesn't mean the treatment is no longer there though. I would believe however that the claims all revolving around surface finish are likely gone by that point though. But the grain refinement that took place in the treatment is still there...but is it any different then standard shot peening at that point?
FWIW, not all shot peening is the same so comparing it to one form of peening, sure it might have substantial benefits over it. Compared to a more refined peening process (smaller media and higher velocity...lol) though...diminishing gains, IMO.
I read somewhere (can't remember where now) that the depth of the WPC "dimples" is only a few ten thousandths of an inch. I feel like that would be worn away from wear surface rather quickly. Leaving you with the same benefits as shot peening. I know that on gear faces, even shot peening eventually gets to be perfectly smooth with gear teeth developing a wear pattern. TRE highly stresses this if you get shot peened gears from him, you have to allow the gears to wear into each other or they will scuff. This to me implies that the "rough" surface left by shot peening needs to be worn smooth before the gear can safely hold power. Since the "rough" surface of WPC has even less depth then shot peening, I feel like the small channels quickly disappear.
