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Discussion Starter #1
Steve, Ced or anyone,

Do you have a dyno sheet for the SP60 that you could either post or send me a copy of? I would greatly appreciate it.

Thanks,

Melvin

[ June 15, 2001: Message edited by: Melvin ]
 

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Here you go:



Keep in mind that this is an SP-60 (.58) running on a blend of race gas and pump gas, a fourth gear pull, a catalytic converter was on the car, and I obviously let off the gas early as the power was still climbing. :)
 

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Jeez, Steve, does it really spool that fast??? :eek: And is this on the stock fuel system?
 
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Discussion Starter #5
That's what I wanted to see, thanks Steve. Chris Bergman posted links to dyno charts of 2 cars using the T-78 and it looks like they are starting to spool at around the same rpm. It's definately making the same if not more power at 3500 rpm. I don't have the link because I'm at work. If anyone here that received the link last night on the main list could you post the links. I think one of the cars belonged to Jesus and they are on horsepowerfreaks but I can find the area they are in. Thanks and thanks again Steve.

Melvin
 
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OK, maybe this should have been in the Tech Forum or maybe the Dyno Forum...Sorry about that but I wanted to peak some interest but compare this dyno chart to the SP60 and tell me what you think...Also maybe you could move this to the proper forum? :) I apologize.

Angels' T78

Thanks,

Melvin
 

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No problem guys. I forgot to mention that this was at 24 PSI and the car is COMPLETELY untuned. The VPC is at default settings and there is no Fuel Tuning whatsoever. There is quite a bit left to achieve with this setup, and the lucky new owner will get to experiment to his hearts content! ;)

Steve
 
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Discussion Starter #9
On the 2 charts, I'm not comparing power, I'm comparing the spool characteristics. I'm just a novice but if you look at the 2 the look very similar, or do they?

Melvin
 

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Just remember that Steve's car was dynoed with a Catalytic on it. Look at Cedric's dyno curve for one without a Cat. It spools much faster without the Cat.


Lar
SP
 

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Hey Larry!

Now that my MKIV ownership days are winding down, I just want to take this opportunity to thank you again for all the work you did to help me buy Ron's old car. It will be going to it's new owner soon, but I've loved every minute of it and really appreciate all the great work you guys do at Sound Performance! :)

Steve

Originally posted by Sound Performance:
<STRONG>Just remember that Steve's car was dynoed with a Catalytic on it. Look at Cedric's dyno curve for one without a Cat. It spools much faster without the Cat.


Lar
SP</STRONG>
 
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You can see my dyno under reader rides in AZ on the MKIV.com, keep in mind that my EBC wouldn't go any higher and my car is an auto so we didn't floor it until ~4K rpms to avoid downshifting the car. I would guess the curve would be about 1K rpms to the left in a 6 speed. A very nice turbo setup but anything above 450 rwhp on pump gas and you still need to do fuel.
 
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Discussion Starter #14
Originally posted by Melvin:
<STRONG>OK, maybe this should have been in the Tech Forum or maybe the Dyno Forum...Sorry about that but I wanted to peak some interest but compare this dyno chart to the SP60 and tell me what you think...Also maybe you could move this to the proper forum? :) I apologize.

Angels' T78

Thanks,

Melvin</STRONG>
My god, how do you control wheel spin on that thing?? :)
 
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Discussion Starter #16
Originally posted by Melvin:
<STRONG>Larry, do you know where a copy of Ced's dyno chart might be so we/I can look at it. I know the dyno isn't everything but I'm trying to see where these turbos are starting to spool and make power. If I'm on the wrong track, then please let me know. Also, If I'm running lower boost would that make the turbo spool slower? It doesn't seem like it would to me, but I'm just a novice.

Peter, what type of turbo are you using?


Melvin

[ June 15, 2001: Message edited by: Melvin ]</STRONG>

I am using a T-60
 
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Discussion Starter #17
Originally posted by Melvin:
<STRONG>Larry, do you know where a copy of Ced's dyno chart might be so we/I can look at it. I know the dyno isn't everything but I'm trying to see where these turbos are starting to spool and make power. If I'm on the wrong track, then please let me know. Also, If I'm running lower boost would that make the turbo spool slower? It doesn't seem like it would to me, but I'm just a novice.

Peter, what type of turbo are you using?


Melvin

[ June 15, 2001: Message edited by: Melvin ]</STRONG>
on my T-60 I start spooling at 2K rpms, full boost around 3500 or so, pretty quick, and I would imagine the SP-60 is a bit faster than that :) Very nice on a auto for around town daily driving
 

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Here is one of my dyno sheets at my 3rd highest boost settings. If what I think is correct then it should be taken with a grain a salt since it was on the stock fuel system. I found that once the turbo started spooling the stock FPR would dump fuel in the line and cause the car to run very rich. This would cause a significant amount of HP loss until the ratios came back up. The good news is that my fuel is done and I will be doing some tuning this weekend. I will post results ASAP.


[ June 15, 2001: Message edited by: Silver Orchid SP60 ]
 
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Discussion Starter #19
Also remember that a dyno graph is missing a very important axis... time. While it may look like a T78 only spools, say, 500RPM later than a smaller turbo like an SP60, you're still looking at a difference of 2-3 seconds longer for it to travel from 3000-4000RPM.

If you're trying to decide which to buy, the best thing to do is find a way to get a ride in two Supras with similar modifications, one with a small turbo, one with a big one. Even better would be if you could drive one around, even if only at part throttle.

-Pete
 
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Discussion Starter #20
Larry, do you know where a copy of Ced's dyno chart might be so we/I can look at it. I know the dyno isn't everything but I'm trying to see where these turbos are starting to spool and make power. If I'm on the wrong track, then please let me know. Also, If I'm running lower boost would that make the turbo spool slower? It doesn't seem like it would to me, but I'm just a novice.

Peter, what type of turbo are you using?


Melvin

[ June 15, 2001: Message edited by: Melvin ]
 
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