BATMAN

With regards to HP the ceramic coating is suppose to improve thermal efficiencies during each combustion event.

luizajeff

[QUOTE=The_penguin]It seems that ceramic coating address a few issues:

BATMAN has just recently notice that when he was driving the car in a VERY cold morning the intake temps were 10C while the water temp just settled at 80C. He boosted the car at 7psi~ and the knock readings shot up to 140. Everything checked out ok and those aviation apex seals seem to have held up nicely.

One more thing to add that BATMAN has noted:

While he was driving his car in the rain he noticed that there is less steam from the oil cooler as a result of rain and puddles splashing on the oil cooler.

Furthermore, he touched the surface of the oil cooler and noted that it was sligthly cooler to touch.
QUOTE]

I'm not surprised about the high knock level just after letting the car reach temp. I have found that after I let my car warm up and start driving I always get higher knock readings then after a bit of driving. I think it's carbon build up that gets burned off once the engine gets a chance to run a bit.
As for the oil coolers, did he touch them after driving in the rain? If so, then yes they would be cooler because of the water evaporating and the latent heat transfer, otherwise he would have had to touched them after driving in the rain sometime before he got the new rotors. Trivial I suppose though. Bigger, or dual oil coolers would do more for the oil system temps I think than coated rotors (not to demean the gains Batman may have gotten with the coating job). Still, I think this is interesting information and more follow-up info is hoped for.

Node

iTrader: (1)

What downfalls are there if you ceramic coated everything......
lower oil and water temperatures, but at what point do combustion temperatures start to cause problems and be detrimental........
seems that detonation may be a problem. Would be good for a race engine, especially methanol, but thats another story.

In my eyes, this would also cool the intake/fuel charge and give even more power yet.....

anyone, anyone, beuller

hornbm

Id like to see an update to how max and batman are doing with this. I may consider doing this for my supercharged engine

BATMAN

So far nothing has changed.

I still need to get the car tuned.

maxcooper

No problems. I looked in the exhaust port while trying to figure out if the coating is coming off or not (since I had the manifold off anyway). I couldn't really tell to be honest, but I don't think it is coming off. There was more carbon build-up than I expected, but I am not sure if the coating had anything to do with that or not.

-Max

BATMAN

Yeah, I too had a little more carbon build up in the exhaust pipes. Perhaps the coating is not letting the carbon stick in the chamber and is passed straight out the exhaust.

If so, that's a thumbs up in my book since carbon build up in the chamber is not good.

Also, I pulled out my plugs after 10k miles and they are cleaner than without the ceramic coating.

These are just observations and not scientific conclusions.

t-von

iTrader: (8)

Do you mean they are cleaner with the ceramic coating or without? Confused!


Also do the water cleaning method to clean out the carbon in the exhaust.

BATMAN

Plugs are cleaner with the coating.

kontakt

I did a search of this thread for JHB and didn't find it, so here's a link.

www.jhbperformance.com

they sell ceramic coated rotors, housings, end, and intermediate housings as well. it is a "cermet" coating, (A or B)... whatever that means. I do know that they claim that their housings last 10x as long as stock though, and the coating that they use was used on the 787B for what that's worth.

BATMAN

Update:

I have almost 15,000 miles on the ceramic coated rotors. Nothing has changed.

And as Maxcooper have stated in another thread, I too have seen a slight improvement in MPG.

My driving habits and style remain constant, yet I have seen 21-23MPG post ceramic coating.

Prior to coating I was getting 18-20 MPG.

Furthermore the ceramic coated engine has a mild street port. Everything else remained constant.

These are just observations, no conclusions as to whether or not ceramic coating has anything to do with it.

Bluem

a friend of mine has a pport 13b n/a and he had his rotors coated to ,he told me he noticed 3 degree drop in oil temp.

t-von

iTrader: (8)

Based on your comments I would say that it does. I can easily see the coating allowing the engine to fully burn the fuel/air mixture more efficiantly compared to a stock engine therefore giving increased fuel economy. Since rotarys by nature are terribly inefficiant when it comes to cumbusting the fuel /air mixture, ceramic coating appears to be really helping out here.

BATMAN

Too bad none of us has the time and/or budget to find out in a controlled test & measurement environment.

2a+RoN

Yeah, I would love to see some results. I just coated my rotors myself and can't wait to get this motor together.

t-von

iTrader: (8)

I would love to see some emissions testing results on your car.

rx7raca

It's too bad we dont have any dyno results either. Compraison of the before and after. I am really considering this. Its not to much money, and seems to help alot.

Also on JHB, their prices aren't to bad either.

http://www.jhbperformance.com/products/rotors.php

Only problem is their not close enough...shipping would be rape.

swaintech seems to be pretty good, 150$.

Quick question for batman, how long did it take to get the rotors back?

Also do they coat your rotors?

BATMAN

took a little more than a week for the entire process.

They did coat the rotor face.

Didn't u see the pics?

darkphantom

iTrader: (2)

this sounds to good to be true if it is.

The FD would be alot more reliable.

espically with dual oil coolers

Just to say this so i understand.

this acts as a heat wrap around the rotors to keep the engine cooler?



BTW this is my favorite

darkphantom

iTrader: (2)

when are you saying this do you mean for just the rotors to be creamic or for the rotors & housings to be creamic.
And for those thinking the creamic material will clog up the eingine and do more harm than good think about this (if its true). If the 8000 hp engines use it they will have creamic buildup in the engine sooner than when a rotary engine will because of the stress the 8000hp engine endures. so look at those engines and see how they react to creamic engines. that will show you a result of the improvement of any hp or mpg. that way batman wont have to take one for the team

neit_jnf

iTrader: (17)

The only thing that worries me is that the ceramic coatings will prevent the heat from going into the coolant and oil and instead will be expelled to the exhaust possibly raising the EGT's

darkphantom

iTrader: (2)

because the heat is only transfered wouldnt you rather flow through the exhaust rather than the coolant. as they say it has to go somewhere. & if its possible coat the cat converter although i wouldnt recommend it!

couturemarc

We have the best shipping rates of anyone offering this service. We use nothing but the absolute best TBC coating on the market, we tested over a dozen coatings and picked the most efficient longest lasting one.

One of the biggest benefits that has not yet been mentioned about our coating is it will also increase rotor bearing life in performance applications. Heat transfer from the combustion chamber through the rotor into the bearing is what kills bearings and this problem is amplified as power output goes up. Anyone running a performance motor should have already upgraded the oil cooling system, these coatings go right to the source of the heat transfer.

fastrotaries

What's wrong with that? High EGT's are not a good thing, IF it's from a lean condition, or timing, but I wouldn't say it's bad from a thermal efficiency point of view. You could argue that if the EGT's are high enough you could melt or eorde turbine blades...housings etc. But that is really high. Higher EGT mean higher velocities, wich in turn mean more energy in the gas, and more energy yields more potential for quicker spool.

neit_jnf

iTrader: (17)

just worried that the temps will reach damaging levels to all downstream of the exhaust... turbos, o2, cats, etc