Went back to the dyno today....
08-30-2006, 08:54 AM
#76
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Originally Posted by fast951
The turbo is the original Stage 3 turbo, however we are using a different hot housing. We saw 533rwhp with the std Stage 3...
The Stage 3 was designed for quick spool, capable of 450-500rwhp. It appears that there is more, even better.
We made few changes to the electronics, that gained some mid-range and got rid of the power dip in the earlier 533rwhp run.
The Stage 3 was designed for quick spool, capable of 450-500rwhp. It appears that there is more, even better.
We made few changes to the electronics, that gained some mid-range and got rid of the power dip in the earlier 533rwhp run.
08-30-2006, 09:19 AM
#77
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Sorry to ask a seemingly OT question but what mods have you made to the suspension, brakes, and transmission to handle all this power on the road?
08-30-2006, 09:22 AM
#78
Nordschleife Master
IMHO, overfilled tank or not; that burst of coolant seems unlikely to come from anything else but cylinder pressure in the coolant system.
Now by that I'm not implying the HG is toast, but either the head lifted or the cylinders moved around.
Now by that I'm not implying the HG is toast, but either the head lifted or the cylinders moved around.
08-30-2006, 09:53 AM
#79
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Originally Posted by 333pg333
Sorry to ask a seemingly OT question but what mods have you made to the suspension, brakes, and transmission to handle all this power on the road?
My car has an exact duplicate of the cup cars. Everything is in new condition.
I use a freshly rebuilt S2 LSD gearbox that was built and sold to me by Dave- the 944 cup ring leader. So if you need yours rebuilt, I would suggest you are safe if you talk to him.
The only thing that is NOT new is the bodywork. She is ugly as a possum on a white picket fence. It was a track car for MANY years, and I honestly don't care what the hell it looks like (within reason) because I ain't out tryin' to score chicks with it.
Duke - the headgasket is fine - drove home at high boost.
And she will be at Lime Rock on Saturday, if anyone wants to inspect.
08-30-2006, 10:02 AM
#80
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Originally Posted by porshhhh951
yes me too please. I would like to host it on my server so it will always be up for people to see.
Its a huge deal. Has anyone made that much power on video before? I don't think so
Its a huge deal. Has anyone made that much power on video before? I don't think so
We certainly need this one to get out to the world
08-30-2006, 11:19 AM
#81
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Originally Posted by eospeed
More please so was it a #10 a t-4 or something else?
Guessing that the Vitesse Stage 3 turbo is a gt30r compressor wheel with a t-350 of smaller turbine wheel in a #8 hotside or maybe a #10 for this run, with no ball bearing it would be interesting to see what a real gt30r with a large hotside A/r could do. My guess would be it could make boost just as early and not drop off like that at the end. It is too bad the Estonian guy broke a rod, I really wanted to see what he could do.
08-30-2006, 11:22 AM
#82
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Originally Posted by George D
When I see stuff like this, I question why I'm considering building a 2.8 or larger motor for my car. I have a super 75 turbo, and don't really like the lag. I'm getting some new chips tomorrow for the mafterburner and will dyno on Thursday and find where I'm at. That is some serious power for the 2.5. Actually the best I've ever seen on these cars. Dyno queen or not, those are amazing numbers.
What fuel were you using for this run? Do you actually run 25psi on pump gas?
George
What fuel were you using for this run? Do you actually run 25psi on pump gas?
George
Make sure you post or PM me when you get the results.
08-30-2006, 11:28 AM
#83
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Originally Posted by Porschefile
George D, the LR Super 75 is a T3/T67 hybrid. The T67 is a ~75# compressor wheel, and in T3 hybrid form is good for ~650rwhp at the most. That's big for a 2.5l. How much power are you looking for? If 600rwhp is the magic number, for a 2.5-3.0l you really can't do any better then a Gt35r (gt3582r to be exact) with a .82 exhaust IMO. That will provide about the quickest spool for a 600rwhp turbo on a 2.5l. I'm sure there are some hybrids out there from Precision turbo or some other company that might be close in terms of spool.
I take it that the T67 part is where the "67mm" comes from on the LR description?
08-30-2006, 11:33 AM
#84
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Guys, let's stop the speculations. The compressor IS NOT a GT30R compressor.. #10 hot housing was used for this run, however the prior run was 533rwhp with a #8. Does this mean that the limiting factor here is the hot housing??? There are many other variables to take into consideration.
The Vitesse turbos are built with modified parts, we don't just slap off the shelf parts together as others do. Designing a turbo that performs great in the low/mid-range yet capable of delivering huge power is no easy task. At times, minor mods make a huge difference, you just have to do your homework and figure out what works. This is why there is a difference in the performance between our turbos and the off-the-shelf ones.
The Vitesse turbos are built with modified parts, we don't just slap off the shelf parts together as others do. Designing a turbo that performs great in the low/mid-range yet capable of delivering huge power is no easy task. At times, minor mods make a huge difference, you just have to do your homework and figure out what works. This is why there is a difference in the performance between our turbos and the off-the-shelf ones.
08-30-2006, 11:37 AM
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Originally Posted by toddk911
So what is the a/r of the Super 75?
I take it that the T67 part is where the "67mm" comes from on the LR description?
I take it that the T67 part is where the "67mm" comes from on the LR description?
The 67mm is a measurement taken from the compresser wheel, I think think it refers to the width of the inducer of the wheel, though it seems more like 80mm looking at my turbo? Hopefuly some one will chime in with where exactly this measuremnt comes from.
08-30-2006, 01:14 PM
#86
Originally Posted by special tool
Markus - Looks good.
But I will be "modifying" the fender sheet metal to use a real set of headers, and the turbo will be at least the size of a basketball.
But I will be "modifying" the fender sheet metal to use a real set of headers, and the turbo will be at least the size of a basketball.
08-30-2006, 01:44 PM
#87
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Originally Posted by lart951
Change of heart Wayne? finally got to the Baptist church last Sunday ah?
08-30-2006, 01:47 PM
#88
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Well - looks like the die is cast.....
The BMW project will have to wait a few months because the next Vitesse turbo for my car is already in production.
The goals will be:
-WELL over 600 RWHP
-WELL over 600 RWTQ
-Over 400 RWTQ BEFORE 4000 RPM
-2.5 8 valve engine with Motronic controls
Please remember that we could EASILY (yes easily) make over 750 RWHP, but at the expense of a decent powerband. We want 400 RW BEFORE 4000 RPM.
This may sem trivial, but it is not.
SOOOOO - would anyone like to bet against us?? Speak up please.
The BMW project will have to wait a few months because the next Vitesse turbo for my car is already in production.
The goals will be:
-WELL over 600 RWHP
-WELL over 600 RWTQ
-Over 400 RWTQ BEFORE 4000 RPM
-2.5 8 valve engine with Motronic controls
Please remember that we could EASILY (yes easily) make over 750 RWHP, but at the expense of a decent powerband. We want 400 RW BEFORE 4000 RPM.
This may sem trivial, but it is not.
SOOOOO - would anyone like to bet against us?? Speak up please.
