That does look alot better...That was the thing I was referring to, and everybody took offense to it...Only question is why 3rd gear and not 4th gear from the beginning, I have always done 4th gear pulls and from what I remember so has everybody I know....
Originally Posted by Mr. KiDD
4th wouldnt hold it slipped and with the timing we were running, we didnt want to do a long extended 4th gear pull. he has no EGT gauge
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EGT is the alternative to a wideband. Need to monitor knock sendor voltage closely when u make changes to timing. I got a ghetto way to monitor it but i dnt know if it works or not.
nebody got a car i can test it out on? lol!!!!
What? Run it up till it blows and then say after the motor is a melted assembly of metal, See, this is how much timing you can safely run. LOL!!!!!!!!
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PER MIKE:
Now for comparison, here is his 2.0L motor vs Peters DYNO DAY 4th gear pull 1.8l, UP crew correct me if i am wrong, but it should be same turbo similar setup vs 2.0l.
Ok on the white car peter is Running the HO turbo which is known to be laggier than the regular t3/t67. And not they wouldnt be the same peter is running a 1.8 vs a 2.0 how is that the same? I know the comp housing Matt is running is a 0.82a/r that dont make it a HO turbo, just my opnion!!
Are you saying that Matt's car would not have made more power sooner in a 4th gear pull? I see the difference in the setups and the diffence in the turbo's that you describe but also was under the impression that a 4th gear pull is where the most power can be made thats why most people do a 4th gear pull instead of a third gear.
Mainstream Performance
Home of Turbo Dave Fabrications
2JZ TDF Built 240SX SOLD
My RHD TDF Built SR20 FOR SALE
record holding-473whp sr20
stock cams and bottom end
As taken from:
http://www.sportcompactcarweb.com/e...c_technobabble/
PS: you can also look here: http://www.bristoldyno.com/info/procedure.htm
Different Gears
Back in the May, 1998 Technobabble, I dyno tested a Sentra SE-R in every different gear. Second, third and fourth were very similar, but first and fifth were quite a bit lower. Testing a car in either first or fifth is a little odd, and would probably be noticed by the car owner if they were observing the test. The differences are much more significant on a turbocharged car, though, as the higher gears slow the engine's acceleration and allow the turbo to spool up earlier and stronger. If you do a second gear pull with a turbocharged car, the engine will often outrun the turbo--by the time the turbo is spinning fast enough to make boost at 3000 rpm, for example, the engine will already be going 4000 rpm; by the time the turbo is fast enough for 4000, the engine is at 5000.
This is why turbocharged cars feel so strong in higher gears when pulling up a hill, or whenever they are heavily loaded. If you compare a turbocharged pull made in second gear to a pull made in fourth, the fourth gear run will almost always be stronger. We typically dyno naturally aspirated cars in third gear, and turbocharged cars in fourth. Another difference that can occur with gearing comes when there is a 1:1 gear ratio available. Most rear-wheel drive gearboxes will have a gear that is 1:1--typically this is fourth gear, but in six-speed gearboxes it is often fifth. In the 1:1 gear in many gearboxes, power is not actually transferred through a gearset; the input and output shafts are just locked together. This eliminates the losses through the gear teeth, and results in a higher power output in that gear.
"I'm not a gynecologist... but I'll take a look."
THERE IS ONLY 1 Difference between my turbo and the H.O. and its the p trim wheel which correct me if i am wrong usually is a slightly laggier wheel.
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see what i bolded
Peters was a 1.8l with stock head, im not sure on camshafts, rods and pistons, and a similar manifold and turbo.
i was merely comparing POWERBAND, not peak whp. What i was saying was that if we show a 4th gear pull vs peters 4th gear pull, we see that it was spooling FASTER than peters, and was on par to make ALOT more power than what peter made THAT DAY. and i would expect so, Spoolins is a 2.0l and peters was a 1.8l. I would like to see peters 700+whp dyno out of his 2.0l graphed over Spoolins , that would give us a great comparison of gear vs gear and spool vs spool.
Peters is the only B series 600whp dyno i have to compare against, thats why i used it. im just saying the "laggy " powerband argument is based on incorrect data. When i post the 4th gear pull from spoolin vs his 622whp 3rd gear pull and peters 4th gear pull , it is evident that we were comparing apples to oranges.
had his clutch held, it would have made 630-650 i bet money on it. that would have been a better powerband and the spool would have been faster, which is evident.
Enterprise Data Resources- Ecommerce Project Manager
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I will volunteer a ride for you...
Let me know if you think you can tune it... I need it corner-weighted too to dial in the suspension as well. I can go by 4 Wal-Mart bathroom scales that you can use.
Baby J
"I'm not a gynecologist... but I'll take a look."
Talk about being aerodynamically challenged. You may find the car is a little right side heavy when you corner weight it!!!!!LOL...I will volunteer a ride for you...
Let me know if you think you can tune it... I need it corner-weighted too to dial in the suspension as well. I can go by 4 Wal-Mart bathroom scales that you can use.
Baby J
Mainstream Performance
Home of Turbo Dave Fabrications
2JZ TDF Built 240SX SOLD
My RHD TDF Built SR20 FOR SALE
record holding-473whp sr20
stock cams and bottom end
i dnt tune suspension but if i did, those scales are perfect. i used tohe digital ones on my car. LOL!!!!I will volunteer a ride for you...
Let me know if you think you can tune it... I need it corner-weighted too to dial in the suspension as well. I can go by 4 Wal-Mart bathroom scales that you can use.
Baby J
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