A-Spec GT35R initial dyno
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Joined: Apr 2001
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From: Seattle, WA
Originally Posted by Jason
When I got my mustang dyno they give you a tech sheet on every car made for the past 15 years. It gives the weight and the HP@50. I asked the guys at mustang exactly what that was and they didnt go into it, but said to keep it at what the book says. He said it would change the numbers one way or another. When I get time I will test changing that number.
Jason
Jason
Thanks,
Gene
Mad Man
Joined: Jan 2002
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From: Big Island Hawaii
Seems to me that for purposes of comparing set-ups we should try to all use the same number. As for bragging rights, whatever the customer wants, manipulate, and make'm happy. I have seen less reputable shiops dyno the car at one setting, install some crap parts, change the dyno settings, and bingo huge gains from that AEM CAI
I really like the Supra Dyno site, the author uses his knowledge to weed out thje BS dynos, he includes them, but makes a note as to what they would read SAE, and why they may, or may not be an accurate reflection of the indivduals set-up. What that site lacks, that Wargasm's site has is the abiluity to overlay multiple graphs. Carl
I really like the Supra Dyno site, the author uses his knowledge to weed out thje BS dynos, he includes them, but makes a note as to what they would read SAE, and why they may, or may not be an accurate reflection of the indivduals set-up. What that site lacks, that Wargasm's site has is the abiluity to overlay multiple graphs. Carl
Originally Posted by gfelber
BTW- website will be up this weekend, but with a new URL. I'll let you guys know where to find it.
Thread Starter
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From: Seattle, WA
Originally Posted by the_glass_man
Can't wait to see it again, though I've been enjoying the replacement at the old URL.
Try this: http://www.mantissaconsulting.com/et...ssa_racing.htm
Site needs some updating, but most of the stuff is there.
Regards,
Gene
thats nice power at 3k like vosko said, you are at about 100 hp at 3k rpm, thats a gt35r has a t04s housing correct, and waht compressor wheel does it use the 60-1? whats the diffrence between gt35r and a to4s other then beign ball bearing?
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From: n
Originally Posted by Wargasm
GT35R uses the GT35R compressor wheel, not the 60-1. As for the compressor maps, they are hardly different at all between GT35R and 60-1.
-Ted
boxed in and drawn out
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From: Bayouself
the compressor mods are fine...how does reducining or going larger in the turbine with the same compressor effect the area of performance on a turbo.
Can going from a .96 to .81/.84 turbine pump the largest flow much sooner (sacrificing the all out top end)? as going to a 1.05 induces lag but more high RPM and top end? Hmmmmm....
Can going from a .96 to .81/.84 turbine pump the largest flow much sooner (sacrificing the all out top end)? as going to a 1.05 induces lag but more high RPM and top end? Hmmmmm....
Why in the world would you guys like the power curve of that single turbo? You have so little power for so long that unless you drag race you will get smoked before you ever start.
My dyno chart from Ralph gives me about 300 ft of tq by the first reading of 3500 goes up some then then is back at 300 again by the end of my run at 6500. The car was made to respond quick, to allow you to come out of a corner and give it gas and have instant response. You guys are creating low speed slugs. This is why NONE of the high hp RX7's can autox. TOO slow around or coming out of a corner. But hey the 7 was never made as a corner carver was it!
My dyno chart from Ralph gives me about 300 ft of tq by the first reading of 3500 goes up some then then is back at 300 again by the end of my run at 6500. The car was made to respond quick, to allow you to come out of a corner and give it gas and have instant response. You guys are creating low speed slugs. This is why NONE of the high hp RX7's can autox. TOO slow around or coming out of a corner. But hey the 7 was never made as a corner carver was it!
Weird Cat Man
Joined: Aug 2001
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From: A pale blue dot
Well, post up some specs on your turbo and a dyno sheet! I'd love to see it!
Also, a lot of people don't autox. If I do any event in my car, it is road course. I have no problems with lag on my turbo (60-1).
Also, a lot of people don't autox. If I do any event in my car, it is road course. I have no problems with lag on my turbo (60-1).
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From: Seattle, WA
Originally Posted by Spank
Why in the world would you guys like the power curve of that single turbo? You have so little power for so long that unless you drag race you will get smoked before you ever start.
My dyno chart from Ralph gives me about 300 ft of tq by the first reading of 3500 goes up some then then is back at 300 again by the end of my run at 6500. The car was made to respond quick, to allow you to come out of a corner and give it gas and have instant response. You guys are creating low speed slugs. This is why NONE of the high hp RX7's can autox. TOO slow around or coming out of a corner. But hey the 7 was never made as a corner carver was it!
My dyno chart from Ralph gives me about 300 ft of tq by the first reading of 3500 goes up some then then is back at 300 again by the end of my run at 6500. The car was made to respond quick, to allow you to come out of a corner and give it gas and have instant response. You guys are creating low speed slugs. This is why NONE of the high hp RX7's can autox. TOO slow around or coming out of a corner. But hey the 7 was never made as a corner carver was it!
Allan (I assume this is Allan, correct?),
Actually this is a very nice power curve compared to most singles. Simple answer is gearing. A modded twin turbo equipped car with 320 RWHP will have more power below 3800 rpms, which is about 19 MPH in 1st and 34 MPH in second. After that the GT35R kicks twin's ***.
Low speed slugs? Maybe. Isn't that the definition of a slug? This is not the ideal turbo for autocross, but its great for road racing. However, O'Blenes autocrosses a 2nd gen with a single not unlike this one. And I KNOW you know who that guy is.
As far as corner carvers are concerned, some of us are tired driving at slow speeds in parking lots (autocross) and have moved up the pyramid of speed (http://www.nsxfiles.com/Pyramid_of_speed.htm) to real corner carving, i.e. road racing.
After you've gotten your *** kicked on road course by a well tuned single turbo FD, you'll know what I mean.
Until then, try to avoid hitting those cones. :
Gene
Gene you make some very valid points. I used to race open superbike and quite due my desire to stop making hospital visits. Autoxing is great fun, however I do think quite often about going roadracing again. However I do not know how well our cars will hold up nor how competitive they would be in the class (whatever it may be). Also I hate the thought of someone bumping my car. Great points!
As to a great driver for the first 60 seconds, you must be talking about an endurance run. I do my best work within the first 30 seconds, after that age has a way of slowing me down!
As to a great driver for the first 60 seconds, you must be talking about an endurance run. I do my best work within the first 30 seconds, after that age has a way of slowing me down!
Thread Starter
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From: Seattle, WA
Originally Posted by Spank
Gene you make some very valid points. I used to race open superbike and quite due my desire to stop making hospital visits. Autoxing is great fun, however I do think quite often about going roadracing again. However I do not know how well our cars will hold up nor how competitive they would be in the class (whatever it may be). Also I hate the thought of someone bumping my car. Great points!
As to a great driver for the first 60 seconds, you must be talking about an endurance run. I do my best work within the first 30 seconds, after that age has a way of slowing me down!
As to a great driver for the first 60 seconds, you must be talking about an endurance run. I do my best work within the first 30 seconds, after that age has a way of slowing me down!
Thanks Alan. With regards to classing, we are very lucky in the Northwest as FD can run wheel-to-wheel in ITS and SPO/SPU class. I've not done any wheel-to-wheel in the FD (race a Spec Miata for that) for the same reason you specified. However I still do time trials (Solo I), and HPDE events. The car would be amazingly competitive in the ITE/SPO classes. I've "spanked" 911 GT3s and Vipers at Pacific Raceways with this car with laps times that compare to fully prepared PCA-1 cars.
On another note, I rolled and possibly totalled the Spec Miata in August. Even slow cars can be dangerous! I guess I'm happy it wasn't the FD.
Regards,
Gene
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From: Seattle, WA
These are SCCA club racing classes which are obviously not the same as SOLO II classes. Some regions do have somewhat parallel classing, but ours is a little more liberal. PCA is Porshce Club of America classing. These are ordered from 1- (fastest) through 5 (slowest).
Some info on local classing with SCCA: http://www.nwr-scca.org/race/regulati.htm
As far as checking out a race- yes! Go here for information: http://www.nwr-scca.org/race/index.htm
The new schedule is not up yet, but first races of teh year usualy start in March. Might also be worth checking out some lapping days at Pacific Raceways hosted by Proformance Racing School: http://www.ProFormanceRaceSchool.com/
IN fact, all day lapping, with instructors is a lot cheaper than entry fees for club races. Last time we were was there is was $425 for 6 hours of lapping and an instructor who raced at Daytona. My wife put in over 300 miles on the track that day in our Spec Miata.
Bring you car!
Gene
Some info on local classing with SCCA: http://www.nwr-scca.org/race/regulati.htm
As far as checking out a race- yes! Go here for information: http://www.nwr-scca.org/race/index.htm
The new schedule is not up yet, but first races of teh year usualy start in March. Might also be worth checking out some lapping days at Pacific Raceways hosted by Proformance Racing School: http://www.ProFormanceRaceSchool.com/
IN fact, all day lapping, with instructors is a lot cheaper than entry fees for club races. Last time we were was there is was $425 for 6 hours of lapping and an instructor who raced at Daytona. My wife put in over 300 miles on the track that day in our Spec Miata.
Bring you car!
Gene
boxed in and drawn out
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From: Bayouself
Originally Posted by Spank
Well I emailed the School and asked about info. They have something going on the 4th of Dec.
God I hate the thought of hurting my car!
God I hate the thought of hurting my car!
Just relax if possible and save your car.I havent seen a single FD in club racing.....it would be in ITE.But This would be adventagous to a single but then you need brakes to stop 400hp+
Sorry we hijacked the GT35R thread!
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From: n
Originally Posted by Wargasm
According to what I've got, they are almost identical for 10-15 PSI boosting (the green lines):
I meant to agree!
I just wrote this up, and it is consistent with your statements!
http://fc3spro.com/TECH/TURBO/compmap.html
-Ted
although your choice of x axis points are semi random, since cfm is related to both boost and rpm, it will give someone a decent idea
Last edited by nyt; Nov 26, 2004 at 09:39 PM.