I am building my car for NHRA drag radial class and i need info. I was wondering if anybody know's of anybody that has done a Turbo PP? I have heard rumors but i want to talk to somebody that has seen it or done it.. I need power to get into the 8.?? building the car now and hope to have it running by june next year....i have a sorce inside the NHRA and they are bringing back the drag radial class....and i'm going for it...i have a sponsor and now i need to get serious....any help would be nice.. thanks

 

Ok it all depends on what rules will be

If it's like NOPI

ditch the 2 rotor
get a 3-rotor with a powerglide
(we have plans to build something like this "maybe")
but don't want to spend alot of resources only to have a non oem auto tranny banned


If the NHRA bans auto's
then get a Guru racing hardened gear/shaft kit for the stock tranny case

get the highest rear end gears
Gforce axle's
a 13B PP motor with a custom plenum
100mm+ AccuFab TB
2 stage N.O.S
50 off the line 100 3rd and 4rth

4 1600cc's injector's
inline

a king summo pump
2 step rev
etc

It would take pages to describe everything

 

so a turbo PP is possible?

 

i'm thinking that noone knows


bump..

 

It most certainly IS possible, Talk to either Crispeed or Rice Racing

 

thank you.....


bump to anyone else that knows....school me please

 

Give it a few months and i will tell you if its possable to run a Triple P/P Turbo on the Road.

I have one in mid build at the moment, i am just getting my Port size and Runner lenths in the right sort of ball park at the Mo.

Chris

 

cool hope it run's well....PM me when it's done...sounds cool.

 

I think you can't run PP turbo because of overlap.

Basically the motor can't build boost because of too much overlap. You would be shooting everything past the rotors.

I think.

 

We will see.

But it has bee done before.

http://www.evil7.com/whatsevil7webpage.html

I have no idea how drivable it will be but its all a learning curve right.

Chris

 

true dat...*****

 

Ahhhh, Evil 7!!!!

 

I know it has been done but would take more skill to get it working right than other ports. I'd say only do it if you have done something similar before.

 

you should be able to get enough power from a setup like that...but then if you're looking for 8's sanctioned by NHRA, you're talking serious safety equipment, no IRS rear end, parachutes....in other words...an awful lot of $$$...i hope your sponser knows what they're getting into.

hell i'm shooting for just high 9sec ET's and it's ending up being a lot more $$$ than i ever anticipated.

 

you should be able to get enough power from a setup like that...but then if you're looking for 8's sanctioned by NHRA, you're talking serious safety equipment, no IRS rear end, parachutes....in other words...an awful lot of $$$...i hope your sponser knows what they're getting into.

hell i'm shooting for just high 9sec ET's and it's ending up being a lot more $$$ than i ever anticipated.

 

The people that say it can't work obviously don't know what it takes to make it work properly. There is one very big rule to remember when turboing a high overlap engine. Exhaust backpressure is absolutely positively your enemy. It is possible to have less pressure in the exhaust than in the intake. This is optimum but at a very minimum have at least equal pressure in the exhaust as the intake. You will obviously need 2 pressure gauges, one in the intake, one in the exhaust before the turbo, to see this. 2 smaller turbos seem to make less backpressure than one large one and it spools faster. Too many people try to compensate for backpressure by adding more boost. This very quickly comes to a point of diminishing returns. I'll give you a fantastic example of the proper way to do it.

Marcus Williams used to have a turbo half bridgeport 13B running methanol. The bridges were small and only on the primary ports so he had much less overlap than you do. He was running bigger and bigger single turbos but was still having the same problem. Too much exhaust pressure before the turbos. Spool times were very slow as well. He finally came to a brick wall in the boost department. At 22 psi he made more power than at 24 psi. Backpressure forced too much air to go back through the bridgeports and back into the next cycle. The solution is obviously to reduce backpressure to the point that this doesn't happen. The next thing he tried were 2 smaller T3 based turbos, one per rotor. Pay dirt! At 23 psi boost, the exhaust pressure was only 18 psi! At 22 psi on the twins he made much more power than at 22 psi on the big single. It did take him almost a year to figure out the perfect turbo combo though and this is a secret that he still guards with his life. The twins also spooled much faster. This was the result on only a small amount of overlap. Imagine how finicky yours will be!

Another thing is that a VERY big plenum chamber seems to yield better power on high overlap engines. The plenum in the above picture is small compared to what I am talking about!

Good luck on yours!

 

Diaperboy, diaperboy,diaperboy. DO YOU EVER STOP TALKING BULLSHIT

Didnt you say in another thread that you made 680 hp on a t51SPl??? WTF!!!! Your making all this power and you need to come into the forum and ask a question like this? Your full of ****, bottom line. Stop lying and wasting everyones time.
Im sorry guys i have just had enough of this guy. He has like 6 different threads, all asking about different turbos and setups and all tytpes of ****. And telling everyone he has a t51spl on his car and he made 680hp w/o nos. To top it all off someone said in one of his other posts that he doesnt even have a Rx7.
Sorry to be the *******. Hey who knows, maybe im completly wrong, I mean we all know that its a piece of cake to make more power than Demetrious, expecially if you have to ask how to do it..(that was meant to be sarcastic.)
O yea almost forgot your other thread, where you broke your t51spl 680hp car by driving on a Las Vegas road w/o a filter and screen on the turbo. And then complain about having to pay $500 FOR A REBUILD! Get realbro, there are many helpful people on this forum that are wasting thier time responding to your lies and such. I dont want to be lied to as well as everyone else.

 

Diaperboy: i live in Vegas and sent you a couple PM's saying what's up and i'd like to see the car and show you mine. I never got a response which makes me wonder what's really going on. I didn't think there were very many "other" 3rd gens in Vegas......let alone one as highly modified as mine. You should hit me up sometime and let me see the car. It would be very cool!

 

was he bullshitting?

 

I sent numerous PM's with no response at all. I guess it was all a fluke. I posted on a couple of the local racing websites with no luck either.

 

I've never heared of diaper boy. and i know all the local rotorheads. as far as i now the only one running street class here is my friends rx3 and my friend who works for me 1st gen plus a customers of mine 93 . i will be running next year in pro mod with my 2nd gen. i finally sold my 2 rotor cosmo and am steeping up to 3 rotor land. silvr i had spoke to you about a year ago. you bought jack's old car.

 

these are about 6 months old.

 

That's me.......it's came a long way since that day though. It's actually came a long way since i spoke to you last year. You should see it sometime.....it'll be down at the fab shop again in a week or so. I'm getting the full cage done up and more chrome-moly suspension parts added on. I'm also going to be finishing up the manual rack and the rest of the automatic install.

I'd like to see your car sometime also.....let me know.

You can email me at turborx7@lvcm.com

 

You can run any port combo with forced induction. Just make sure if you go with the PP you run a big enough turbo & injectors to feed it. 10Krpm + anyone?