More boost = more HP ???

[valmes]

I'm going to be running a manual gearbox with an auto transfer case, which will mean my gears will be (6000rpm)

62.33
93.78
140.34
191.58
259.50


Which compares to the stock manual 4.111 at

55.86
84.06
125.76
171.66
232.56


This should mean I will not need to change into 5th on any drag strip, and it will lower my cruising rpm nicely on the motorway too

Brad, why are you quoting at 6000 rpm? If my mind doesn't go into "Please wait formatting your hard drive again, pleaaa... ohhh i did it already? Well, never hurts to start from a scratch! Please wait..." then I would say I am changing right before the 100kph into 3rd. May be around 96 kph... then you can ride the rev limiter to achieve better 0-100 times.

I am going to just allow 800 more rpm. I think it should do the trick.

[bradc]

I was just quoteing that of course - you can change gears at whatever speed you want

With your bigger turbos you would be better to change gear at 7000rpm or higher, but with the stock turbos I would have thought somewhere between 6500rpm and 7000rpm would be best because boost starts to fall off rapidly as the rpm's increase.

[Wodjno]

Heres Brad Speeds in MPH for us Non Metric English Speakers @ a 6800 rpm change up

1st 43.87
2nd 66.04
3rd 98.83
4th 134.91
5th 182.75

[valmes]

Heres Brad Speeds in MPH for us Non Metric English Speakers @ a 6800 rpm change up

1st 43.87
2nd 66.04
3rd 98.83
4th 134.91
5th 182.75

182,75mph??? that's = 294 kph!!! and that is only a "gear change point"... what's on your mind Brad?

[bradc]

convert both the 4.111 and 3.684 speeds you lazy pom!

[bradc]

Valmes - at 7000rpm with 235/45/17 tyres I will be doing 302.75kmh.

I think it would be quite nice to say I'm the first person to take an 8G to 300kmh

[valmes]

Valmes - at 7000rpm with 235/45/17 tyres I will be doing 302.75kmh.

I think it would be quite nice to say I'm the first person to take an 8G to 300kmh

Ummm... no. The first one to take 8G over 300kph was PROS Eng. , but you will be the first one outside of Japan

[bradc]

but wasn't that the one with the 4g63 in it?

[valmes]

No. It was Galant with 6a13 and those PROS Egn. upgrated turbos (and everythin else of course).

The one with 4g63 was made by JUN. Although they did get ~540bhp out of 6a13 first.

I don't have links to these anymore, so correct me if I am wrong.

[bradc]

My GT25R's will be bigger than those pros turboes Check out my gallery Valmes, my car is coming along nicely

[valmes]

Can't get used to the new clutch... I am bogging down on start. I will have a video shortly (by tomorrow at most). Same boost, managed 4,7 sec. one time and couple 4,9 sec runs. 0-100kph. That would be close to ~4,55 sec. 0-60mph. Time recorded by Apexi RSM (tires are adjusted for... so if I left it at 100% it would be even quicker).

Boost set to 0,8 bar in AVC-R with duty at 35%. Although for some reason running closer to 0,9 bar.

Ahh... and yeah, it was nice and shiny today at 22 C !

[Wodjno]

Can't get used to the new clutch... I am bogging down on start. I will have a video shortly (by tomorrow at most). Same boost, managed 4,7 sec. one time and couple 4,9 sec runs. 0-100kph. That would be close to ~4,55 sec. 0-60mph. Time recorded by Apexi RSM (tires are adjusted for... so if I left it at 100% it would be even quicker).

Boost set to 0,8 bar in AVC-R with duty at 35%. Although for some reason running closer to 0,9 bar.

Ahh... and yeah, it was nice and shiny today at 22 C !

Nice Figures

Wondered why you was checking out the Gtech figures earlier

[valmes]

Nice Figures

Wondered why you was checking out the Gtech figures earlier

I think I have something to post in G-TECH figures
Well, will post here first then will move on to claim my prize j/k.

I am slowly getting used to this clutch. I can now get constant 4.7 0-100kph, even though I am still bogging down somewhat on launch and hitting rev limiter on my only shift from 1st to 2nd. So I think there is still room at this boost level to get under 4.6 0-100... Right now my best is 4.62 (which translates to 4.39 0-60mph! )

With starting part improved, I tried going for the 1/4 mile again. Started pretty decent, as you can see 5.3 sec at 103 kph... that's under 5 sec 0-100 (and even lower 0-60), but was hitting rev limiter badly in every gear change (on third got into gear from second time) it must have had an impact on my trap speed, since I almost felt how car was decelerating between long gear changes on a rev limiter and for example trap speed for 13.46 pass was 169 kph. For 13.09 sec pass it was only 165kph... Duhh... I know I can go into 12s with a bit of practice on starting and gear changing, at the same boost level!

And yes, it was at around 16 C outside... May be I should go out late at night when it hits 10 C???

Ok, pictures here:

[valmes]

Couple of Videos in 3GP format (use Quick Time Player or Media Player Classic) with 0-100kph runs:

4,71 sec. 127kb
4,92 sec. 274kb

[Axeboy]

Very nice

Sounds superb

[bradc]

What rpm are you launching at? Is part of the problem that the new turbos don't spool quite as fast as the td03's which in turn make it more difficult to launch?

[valmes]

No it is not turbos... its metalaceramic twin plate clutch and lightened flywheel combo - they grp instantly, without slipping... which is causing the bogging down effect at lower rpms. On a stock clutch you can slip the clutch and then let go of the clutch pedal, while applying throttle, which results in great start. However you can't do it too often, since stock clutch will wear out and start to slip not only on start, but under load too.

This clutch is just different - it takes the abuse you through at it and holds no matter what! Although starting is a bit tricky… but I am getting better at it! Just need a little practice.

I am launching at 6000-7000 rpm.

[bradc]

how about running tyres with less grip, to make the wheels spin a bit more off the line? Or you could pump up the pressure to 45psi or more and see if that helps them spin a bit more.

[valmes]

how about running tyres with less grip, to make the wheels spin a bit more off the line? Or you could pump up the pressure to 45psi or more and see if that helps them spin a bit more.

Ohh, yeahh! 45 psi should really spin the hell out of those tires... that is 45 psi in the intake manifold!!!

[bradc]

haha yeah thats true. Now that it seems to be running quite well are you going to continue to increase the boost?