RX-7Impreza

I wanted to know if the rotors can be coated with ceramics and filled to increase the compression ratio. also, can this be done safely so that the ceramic face would never detach in motion and eat my rotor housings???

Justin

No7Yet

While I'm sure it's possible, more gains can be had from bolt-ons, porting, and forced induction than would justify the extra effort. If you REALLY want higher compression rotors, your best bet is to wait for the RENESIS to start shipping. They're lighter and higher compression.

Brandon

mazdaspeed7

What CR are the renesis rotors? And will they work on a 13B shaft, etc.

RX-7Impreza

i am talking about 11.5-12.0 compression there. with an N/A there is a limit to the amount of bolt-ons you can do. so this is something i want to do, i just want to know if it will work......

Justin

No7Yet

I'm sure it's possible, but I wouldn't begin to know how... I think it's time to call Atkins or Pineapple or Pettit or RP and see what they say...

...but if you're going to spend the money, why not just go FI? There're already low-compression rotors to be had, it's easier to decrease than increase compression, and increasing V.E. is the way to increase HP - just ask the V8 folks...

Brandon

RX-7Impreza

i have no idea what that last part was about. FI????? and the part about VE. if that is displacement you are talking about....they do that because the larger the surface area on the piston face, the more power they get. not neccessarily the displacement but that does have a lot to do with it.

i just realized that everything i just said was pointless.

if i increase the compression it is one of the few ways to get hp out of an n/a

Justin

tweaked

iTrader: (4)

VE is Volumetric Efficency. the closer you get to 100% VE the more air and fuel you get into the combustion chamber, which = more power.
But I am with you man. I want 10:1 rotors or higher too. I know that machine shops (some of the good ones) can lay a bead on the top of pistons to increase compression. but this is tough because they have to be really good and get the same amount on each rotor face. then they hve to be rebalanced. I have heard of someone that once made a slightly higher compression rotor but I don't know who it was.
I don't see why a company doen't make new ones from billit aluminum. it would be ligher and transfer heat better than the cast ones they are useing now. then they could make any compression the wanted

RETed

Why you want to do that and require to run supr high octane (basically race gas) everytime you need a fill-up???

Unless you've got money to dump on an NA (I don't usually see this situation), there's a lot of other stuff (that's been mentioned) you can do without messing with CR's.&nbsp Hell, going with a Turbo II is cheaper and easier at this point...

There is no easy and cheap way to increase CR's and definitely not build the rotor face up with ceramic coatings.&nbsp Ceramic coatings are designed to be layer under 0.5mm (most applications), and trying to layer more than that will probalby introduce delam problems!



-Ted


-Ted

RX-7Impreza

thanks Ted,

i just decided against this. i may get low compression rotors in that case.

i really hate to even say this.....

other than the turbo, IC, and other tubing, plus the boost gauge. what do i need to add to my N/A to eventually make it turbo.

i would rather have an N/A engine turboed than a TII, more airflow...

Justin

RX-7Impreza

forget i ever said that!!!!!!!!!!! no turbo on this guys N/A

Justin

pp13bnos

iTrader: (1)

Ianetti (sp?) the guy who makes ceramic apex seals does high compression rotors, but you're going to spend some big $$. I was talking awhile ago to Rob at Pineapple about this, and he said the cost could'nt justify the hp gains, unless you're running full race. Better to just put some nitrous to it. CJ

NZConvertible

Huh? Please explain...

RX-7Impreza

6th ports