I have been given the chance to street port my motor(13brew). I have a t3 35r with a 1.06a/r. Is it a good idea to port or is my turbine housing to small to make a real difference in power??? I don't want to shift my power band so high that the turbo becomes the choke for the air flow. Would i be better off running more boost with stock ports and shifting at 7500 or doing a large port and reving to 8500 or so. What do u guys suggest??

 

port it and throw a t4 hotside on it. The t3 is the only thing that would be choking up anything.

 

I don't have the $$$ for a new turbo at the moment, but I do have the chance to port and keep the turbo I have. honda hater, did I meet u about a week ago with barry???

 

If your running a 106 ar i dont see you have a problem, i ran smaller turbo with t3 and port it just spooled very quick. The egt's might be a little higher.

 

I'm not sure if you can just remove the t3 hotside and replace it with a t4 on gt35r's but if I do recall I think it's a little harder than that on those turbos. I haven't met anyone thats into rx7's in a long time, Would be nice to see someone else into the same habbit In this small *** town most of the guys here either like big v8's or hondas.

Yeah thats one of the major problems with running such a small turbine. High egt's = not your friend

 

yes- it is not as simple as removing one turbine housing and installing another.

So you 2 are sayin that the problem is not flow related but heat??? at 15psi my egts already peg out my 0-1600f gauges. I am not tryin to get better spool, the turbo spools just fine- I want my motor/turbo to have the ability to make more power.

Anyone else have any input on the subject??? Anyone get a little more detail on the y's

 

Until you get it sorted out i would put more fuel to it to reduce egt's.

 

ive been told by man professionals as well as experience it with my gt32...t3 hot sides are not necessarily "choking" the motor. I had quick spool and made great power.

 

I don't know, Only thing I remember is seeing really high egt's with my stock turbo hybrid. high egts are indicative of small t3 turbines on engines that could effectively spool huge t4 turbines with ease. Not only will you get high egts but you'll have lower power than what you could make with it's t4 counter part. I'm going to say it's the t3 hotside myself but I have been known to be wrong. Marcus where you logging egt's with your t3 turbo? I'm inclined to think that possibly 90% of the people out there are going to tell you that a t3 is just too small for a rotary.

edit: I've got people telling me that my .96 ptrim t4 hotside is too small for my motor. I'm thinking of going to 1.15

 

we've made almost 500rwhp with a t3 gt35/40. awesome spool and great top end egt's are a little high but we pull timing a little to help aid this. been running like this for 3 hard years.

big hotsides are sometimes over rated. every one likes to believe that a smaller hotside will only hold you back, which is not always true.

do the port job, you won't need anything crazy and don't go too big on the exhaust ports or you will lose your fat powerband some. keep it simple

 

Dave at Speed Machine Performance sold me my turbo and he told me the same thing. It all depends on your power goals. I told him I was looking for a reliable 400rwhp turbo and he sold me the gt32.

 

I have go egt gauge unfortunately. The Falken Drift RX-7 ran a gt32 for quit sometime and did great. I think its really about your power goals. I get fast spool and it pulls hard up top.

 

Damn I wonder why most people that have t4 gt35r's can't hit those numbers?

 

Call Pineapple Racing and talk to them about porting.

 

what kind of AFR's were you running if you dont mind me asking. I'm running 11.1 currently with an innovative

 

I did 476 YEARS ago on that turbo. I was probably one of the first in the country to have one. It works really well with an gressive street port. If you want a responsive street car and still make good power you will not be dissapointed.

 

Rotary exp.7-At what boost and rpm are you making 476whp?? What did you do as far as porting?? Where is your torque peak??? did u use AI?? Any dyno charts??

 

He made it at 20 psi, I was there for the dyno. Search under username 'silver93t' and 'dyno' and you'll find the thread, I think it's right in the single turbo archives.

 

Just wanted to follow up after I ported the motor and say damn. I love it, doesn't fall off. Makes more *** dyno power at 12psi than at 15psi with stock ports. Can't wait for some AI and really start making some power.