do you guys think you will be doing the same thing with the gt40r as you did with the gt35rs?

 

What exactly is your question? Are you asking if the power will be the same? Or are you asking if they will be upgrading the GT40R into a GT40RS? I have a GT40R now.

Dee

 

Ditto here Dee. Do you know what trim compressor wheel you have?

 

"doing the same thing" equals customizing the GT40R configuration with different housing or wheels.

Your question seems to be "will you be designing a compressor and turbine wheel combination based on the Garrett GT40R for use with the rotary" which is in essence what Sean (et all) did with the upgraded wheels with a T4 housing. I am not sure what of the original GT35R remains...maybe the CHRA?

It's esstentially a GT35RS ASPEC turbo, rather than a GT35R GARRETT turbo now. Yes, it is made from parts from Garrett I imagine, but you cannot buy one in that configuration from anyone else.

Make sense?

 

yea just wondering if a-spec will be making a rs model for the gt40r as they did the 35.

 

Just curious... how much top end power do you want to make and at what boost level?

 

I would say that you'd be better off posting this in the A-Spec subforum instead of here.

Zach

 

What do you think the GT35RS is?

 

Jason, if you are implying that the GT35RS is a GT40R then you would be wrong. Not trying to be rude or start a flame war here, but I wanted to make sure that all the details were accurate.

Zach

 

I may start looking at 40R's later I have no desire to as of now, I feel they are not performing up to what I want out of them. They do have potential. As to if it is just a 40R wheel on there? Ah... you can try that if you want, you'll find out for yourself how far off you are

 

Dont worry, I wont spoil your fun Sean.

Jason

 

I agree they have potential. I agree that they might not be living up to what some of us wanted out of them originally. I also now know that they are better suited to a long tube manifold versus the short runner length that I had originally, Sean. That might be of some value to you.

A compressor map of the RS would be nice but realize you may not want to release that. I still believe the 52 and 54 trim compressors on the GT40r have a better potential than the GT35r compressor wheels. My facets of "potential" are a mix of boost and total CFM: looking at above 18 psi from 5000 to 8000rpm.

 

as for the above mentioned question. im looking for around 500whp in 15-20psi range. but i want a faster spool than the gt42r.

 

Then I would look at the GT35RS. The first car running this turbo put down 447-448whp at 14psi. And that turbo has PLENTY of room to grow. Go check out A-Spec's subforum and look at the info and dyno sheet that is posted.

Zach

 

thanks brutha

 

would the gt40 give me 550 on a street port in that psi range?

 

GT40 at 20psi isn't going to put down 550hp. I saw a GT42 do 560+ hp at 23psi though.

 

Asleep: No, I am not sure. I have a new GT40R. It has a .72 a/r compressor and a 1.06 a/r turbine. Not sure on the trim though.

Dee

 

I may have worded that wrong, I think for what I usually shoot for they are not up to par. I would say they are more drag oriented. As for being better suited for a long runner manifold? Eh.. I've run them on both and seen differences but I wouldn't say one is better than the other. We were seeing more of a hump in our curves and others(zkeller and carlos) versus more peaky. You yourself noted the same thing in the other thread. I wouldn't say that I have a "comp map" for the RS setup because it is more involved than just grabbing standard off the shelf parts. To be quite honest I may rename the whole thing because I started out testing it as our 450R setup then thought I might use our 35R name recognition to help move it and because I was shooting for similar response,with more power, but I think people are already thinking it is a 35R and it is far from it.

-S-

 

sounds good

 

Custom work, eh? Wheel and housing. Very nice. Name the turbo the "Zero 35RS!"

My humps, my humps, my lovely turbo humps! My humps went away went that malfunctioning Newgen went away. Or I am thinking of the right thread from the past? Refresh my memory.

With the longer runners I am seeing more of what I had calculated from the initial maps.

So far (limited weather for testing) in 3rd gear 14.93psi versus 13.08psi @ 4056rpm. Long to short runner.

I still wish I could have put your mani on the car for a comparision. This one worked out cheaper in the short run but maybe more expensive in the long run.

 

Single turbo drama! You don't want no forum drama!

 

so what your saying is that i would be better off trying to get 500hp out of the 35rs? than with the 40r?