skc

Good to see things went well in your first track day after the rebuild.

olddragger

iTrader: (3)

i will probably get flamed for this --but there is a reason i didnt tune for max power until the apv opens. I have become very gunshy of detonation and I am taking whatever measures i can reasonabily take to prevent it.
I thought that reducing load during the crossover (5K-6K rpms) point may help to prevent the dreaded "D". I may be wrong about that, but I made a decision to try it.So I left much of my beloved under the curve power on the table.
Above 6.2 K it really comes on.
Engine was flawless this w/e---maybe this will be of help, maybe I am fooling myself, IDK.
When I tuned I and no one else was expected THAT MUCH jump when the apv's opened. We didnt tune for it--it just happened. We left it alone.
I have worked on the lim apv runners by trumphet shapeing and decreasing the short side radius of the runners curve, I also worked on the apv barrells--but you have to be careful with them. remember there is no fuel through those runners so you dont have to worry about fuel separation etc--just shoot for velocity. especially in the rear rotor.
I am sure there will be opinions about this.

TeamRX8

iTrader: (25)

you are running me low on :facepalm:'s

Galen Darkmoon

OD

Got this off the snow performance web site, Somewhere.

Pre- or Post- Supercharger/Turbocharger?

• Centrifugal/Turbo: (Procharger, Vortech, Paxton, Powerdyne, Rotrex, etc.) Never mount an injector nozzle before a centrifugal supercharger or turbocharger compressor. Sending fluid through the compressor wheel that spins anywhere from 50,000rpm to 250,000rpm can erode the leading edges of the fine aluminum, as well as serve to reduce the atomization. Instead of a fine mist, the compressor housing will create a river of fluid along the outside wall that means we get less benefit and use more fluid.
• Positive Displacement Supercharger: Roots style (B&M, Eaton, Magnuson, etc.) or twin screw (Lysholm, Kenne Bell, Whipple, etc.) Mounting the nozzle before this style of blower is perfectly safe and actually provides some additional benefits. The small amount of water-methanol fluid isn’t harmful to any rotor seals or surfaces or coatings, and it helps to seal the clearances and condense the air some more, resulting in a more efficient output. Additionally, it keeps the rotors and housing MUCH cooler, which reduces heat transfer to the rest of the intake and air charge.

I'll keep reading and looking. Yall here haven't led me astray yet. Well maybe 10k in mods

olddragger

iTrader: (3)

the problem as I see it concerning a pre blower water meth nozzle is the turn the air has to make coming out of the blower and the a/w intercooler the vapor has to go through immediatly after. No doubt it is good for the blower as it cools it, but since I am running the low boost pulley my blower rpms are no where near max and it's heat shouldnt be a problem?
The 60ml nozzle post blower performed well at Road Atlanta.
I am paying more attention to the fuel octane and just using the w/m for charge cooling. Charge cooling doesnt take much to work with my low boost set up.
Get this too-- on track i only used 1/2 oz/gal of pre mix. Too much oil in the combustion chamber also increases risk of detonation. RB studies showed that at 1oz per gallon the engine had more h/p by a small amount. Now my reasoning tells me if that is enough to help seal the combustion chambers then there is some oil in the combustion chamber being left over? If there is then detonation is more likely. So I backed off to 1/2 oz. I couldnt tell any difference lol. Tail pipes maybe a tad cleaner.
Backing off w/m amount and pre mix amount--paying serious attention to octane/fuel quality.
Thats my plan.

olddragger

iTrader: (3)

Look what I have on the way......
http://www.norotors.com/index.php?ac...ch=10494;image
http://www.norotors.com/index.php?ac...ch=10496;image

I must have been a very good boy this year.

olddragger

iTrader: (3)

https://www.rx8club.com/attachment.p...1&d=1324865139
mhttps://www.rx8club.com/attachment.php?attachmentid=179907&stc=1&d=1324865 220

sorry guys I couldnt help myself

Yall should hear the details..........

firecran

iTrader: (3)

Very Nice!
R1 front lip and call it a day!

hoss -05

iTrader: (4)

WOW looks Great Denny cant wait to hear the details.

Rote8

So, is a blower or turbo the next addition? LOL

olddragger

iTrader: (3)

Doesnt need it
Texas Speed built long block with approx 500hp to the wheels and a whole bunch of Tq.
T56 built trans. 3.90 diff
Drivetrain has approx 6K on it.
The insides is just as nice as the outside
wgt with 180lb driver is aprox 2900.
I will probably be adding a restrictor to it to get it down to the mid 400's and if I do track it --a lot of work has to be done in the oil supply area plus I would actually need to swap out the cam.
Good problems to have.

Galen Darkmoon

Great Scott!

olddragger

iTrader: (3)

well deal is off---dont ask. My life sucks.

HiFlite999

iTrader: (2)

Possibly a message from your guardian angel?

Other than the std Everest answer ('bacause it's there'), I've never understood the desire to stick a V-8 into an RX. Chevy has already done a good job of building a great car around a small block; the RX-7 version is called a Corvette.

Guess you're stuck with us a while longer ...

TeamRX8

iTrader: (25)

you obviously aren't happy when it doesn't, you no sooner finally got your RX8 half-way straightened out and then you want to bail, not sure if I should lol or wtf ...

Moon Assad

Probably should bite the bullet and just get a diasio, haha. That's what the rotor gods wanted in the first place. Kids all gather round for a story. I was working on something at Cams oneday and a kid rolled in with a rx7 with a ls1 motor swap. It looked pretty good. The guy was saying he had it up to 160 on 95the and that he just bought it a few days ago and wanted to bring it in. Well he hung around for a few days when it was time for him to go back were he came from he was pulling out of the parking lot and his steering went out. Seems whoever put the car together didn't put the shaft from the steering wheel to the rack properly. It was only on a 1/4 inch and they never removed the bolt to allow the shaft to go all the way were it was supposed to be. Just saying you never now what corners were cut when someone does a project like that.

zenrx8

iTrader: (4)

Denny, have you ever looked at these intercooler foggers? The kits run an aluminum tube around the intercooler radiator and will either manually or at a temp dependent point discharge CO2 around the fins of the radiator. It's like nos in that you have to keep a botle full of CO2 somewhere, but may give an extra margin of cooling on those Hotlanta Summer Track Days....

olddragger

iTrader: (3)

I dont have a problem with intake charge temps--even in the souths summer heat--since I installed a cooler for the water with a much larger face front.

dondo

iTrader: (7)

hey guys where'd you get that metal undertray again? Thanks!

olddragger

iTrader: (3)

You mean the one under the intake?
Mine is BHR's---worth every penny--damn well made and really sets that area off when you open the hood.

slvrstreak

iTrader: (3)

mine is BHR as well
gives a very clean look

marsredr100

iTrader: (1)

Denny…my two cents.

A mazda rotary car with no rotary engine equates to a mazda rotary car with no soul. Every time I come across one of those rotary engine to piston engine swaps the first thing that comes to mind is (engineering mind gave up and now duct tape to fix it). The same goes when I come across a ford/chevy/dodge utilizing the wrong manufacturer engine. I have come across plenty of 2nd and 3rd gen DD Turbo RX7s with @ 500 rwhp very street easy driven (sleepers). You will not know cuz the engines are street ported. You don’t need to shoehorn a 350+ cu inch piston engine when a blown 80 cu inch rotary can easily do the same job.

Rotary Power…Period

BTW, that was a blown 13B 80 cu in rotary engine.

Brettus

iTrader: (2)

Hey OD - , I recently came across the same thing . Turned out the SSV was not opening .

Galen Darkmoon

Well
There is my legendary freind from back in the early 70's, blew the engine in his mustang did a major upgrade and installed an engine out of a wrecked cuda.

So was born " The hemi cuda mustang" and boy howdy did it rock. ")

california style

After the winter break, I'm getting the yellow peril ready for 2012. Tweaked a few hoses etc and tightened up the belts for the first proper run, as last year I left everything a little on the "low side" as part of the shake down....

With the new Pettit motor and the Pettit full exhaust its SWEEET!

8.6 psi boost, and 352 g/s air flow by 8400 rpm.
I made 210 g/s at only 5400 rpm.

Next step is to try and better address track cooling stuff......