Gtst Vs. Gtr

[MJTru]

I don't think 4" is enough backspace for that rim. I reckon you'll struggle. Measure it up and see.

ok so if i use a 15x10 with a back space of 4" there will be 6" from the hub out. your right i dosn't sound like it will fit

basing it on the rims i have right now. they only have a lip of about 2 inch so just off the top of my head i would say it should be about 5-6 inch back space with a raised ride hiegth and a rolled lip.

i will mesure it up tomarrow. thanks for the help 2rismo

[jas/slo32]

15 x 8 rims may foul the r33 brakes if it does s14 rears fit with heaps of clearance as for backspace youd be looking for 5.5 to 6in backspace slick sizes 26x9 / 26x 10

[MJTru]

15 x 8 rims may foul the r33 brakes if it does s14 rears fit with heaps of clearance as for backspace youd be looking for 5.5 to 6in backspace slick sizes 26x9 / 26x 10

thanks mate your the only one that was very clear about the situation. my car is a gtst and i will go with the 15x8 with a back space of 6" with the 26x10 drag tires.

what type of tire would you recommend I'm looking for one of the best on the market.??????

what can i do to the suspension to aid in the drag set up.????????

how about changing the spring rate ti a softer one what do you use?????????

[jas/slo32]

pm sent

[WET-25T]

Hey, just curious as to what the gtr had done to it to beat you.

Was it on a drag strip?

What model gtr (r32, r33, r34).

[~Hypnotik~]

i'm new into the drag world i dont know what a pineapples is.

the adjustable rear camber arms i know about and will buy them asap. with the arms your saying to run the rear wheels at -5 deg camber.????????????right.

what is a pineapples ?????????/

No no no.... I meant if running excessive negative camber which you will probably have if your car is lowered and with stock camber arms you won't have optimal grip. Anything between -1.5 and -0.5 would be ideal. -5 would be horrible for traction and tyre wear.

Pineapples (subframe bushes) reduce axle tramp and provide more traction.

They adjust the amount of anti-squat in the rear suspension and also preload the stock bushes so they are firmer and allow less movement.

Depending on how they are installed, you either increase anti-squat and reduce the amount the rear squats or you decrease the amount of anti-squat and increase the amount the rear squats. The only time you would want to increase the anti-squat is if you are having power on understeer or you have really soft rear springs and the thing squats too much as it is and you can't get power down because of the camber, you usually want to decrease it. Letting the rear squat more under power usually increases your traction on corner exit.

Usually the alloy cradle bushes do not allow this adjustment, it is always stuck at neutral, so anti-squat is the same as factory, but you can adjust this if you get some spacers made to sit between the alloy bush and the chassis.

Do a search on pineapples, you'll find tons of information. Also search the differences between polyurathane and alloy bushes and see which ones you prefer.

[The Bogan]

Just curious mate how do you launch and what clutch you got, ie slip clutch, load it up or just drop it and from what revs.

Been practicing my launches at work( got a nice wide and long road on G land ) I either bag it up or bog down but im still on 265 35 18 nankang ultra sports street tyres with 35 psi in them when im practicing my launch.

Ive got a gts-t with stuff done, Excedy H/D clutch & plate and ive got full boost at 4500 with a nice linear curve.

Thanks mate.

[DaGr81]

240sx... You in the states?

[MJTru]

yes mate I'm in the states i travel back and forth to the Bahamas. if you like the 240sx check the pis and this link.http://www.youtube.com/watch?v=9m2QV5QEK_U its when i was building it.

So i have a traction problem. i think this has to do with couple of things that i will list. I would also like everyone to give me there advice on getting this gtst to hook off the line. as of now the car is making the power but i cant seen to get it to stick.

Most off the drag racing we do is not on tracks but on strips off abandoned roads, and we bet for money this car just wont hook and cost me a Heep load of cash. so instead of racing it like that I'm trying to see if i spend some money on the suspension and win back some money and don't let little sentra fwd beat me.

The car is a gtst r33. after reading and asking for help on this site i got some drag rings 15x8 with 5.5 inch back spacing. i wrapped them with 26x10x15 M/T ET Drags (had to down grade the brakes ). the car has K Sport coil overs and for drag i think it may be to stiff. 3 of the 4 rear sub frame bushings are damaged. The car has a stock LSD. The stock rear camber arms were adjusted all the way out and if feel that the camber is still too much off. the car sits low, it may be to low for drag. when i used the drag rims and tires the first time i noticed a pattern on the tire 1.5 inch of the outer edge wasn't even touching the road (10psi),it still looked like new.

the list is as follows.

1. 15x8 5.5 bs 26x10x15 i have these check.

2. need sub frame (pineapple) for drag should i get aluminum or polyurethane.?

3. LSD Kazz should i get a 1.5 or 2 way LSD.?

4. New coil overs for drag. old ones are K sport. can anyone list a drag coil over or spring rate for drag setup.?

5. Does any know if i can fit bigger tires on the rims i have now.? and if i buy new rims and tires with the brake down grade what's the widest can i go in the rear, even if i have widen the rear a little i will.

6. If anyone has any suggestions please help i will post all vids of the even. thanks mates.

I have attached some pics of projects and pics of under the hood of the skyline and so on

thanks again everyone.

Edited November 9, 2009 by MJTru

[MJTru]

this link is a video of the skyline lunching

http://www.youtube.com/watch?v=tWjfjWIZpyU am i suppose to rip these tire like that.

[400kw]

this link is a video of the skyline lunching

http://www.youtube.com/watch?v=tWjfjWIZpyU am i suppose to rip these tire like that.

dude if thats a true 750hp at the wheels it should light up in 3 rdwith no prob at all but it seam to hook in 3rd and it didnt seam that laggy what size tubo you running ? my r33 used to make 488.9 rwkw on pump fuel and there was no way it was going to hook up on the raod with a street slick ..

[MJTru]

dude if thats a true 750hp at the wheels it should light up in 3 rdwith no prob at all but it seam to hook in 3rd and it didnt seam that laggy what size tubo you running ? my r33 used to make 488.9 rwkw on pump fuel and there was no way it was going to hook up on the raod with a street slick ..

ya the cars best hp was about 750- 748 to be on point. but that was using my friends heltec ps2000. now I'm back to the power fc with is limiting afm's. The turbo is a AMS GT950R. That day i was running 18psi, and the turbo maxes the afm out at about 26psi.

The turbo comes in at full boost at about 3800 rpm's. so i would say not laggy at all.

you car sound fast mate do you have any pics or even some videos of it.?

I'm no longer running 7500 rpms rev limiter i moved it up to 9500 and remapped for it, and the obvious a whole re-tune.

the car leaves the line much better with less hanging up. But it still has its traction problems. I'm going to put the stock coil in and give it a go.

cheers mate.

Edited November 11, 2009 by MJTru

[Super_Dude]

The turbo comes in at full boost at about 3800 rpm's. so i would say not laggy at all.

Can you post a dyno sheet? Maybe this is the turbo I need!

[MJTru]

Can you post a dyno sheet? Maybe this is the turbo I need!

I've been looking for the dyno sheet for my car, no luck finding it right now,but i do have a dyno sheet for a evo 9

the engine is a stroked to 2.2 with a fully built motor.

http://forums.evolutionm.net/evo-dyno-tuni...yno-inside.html

its a good turbo a bit too pricey but worth it for a t3 framed turbo. what i noticed mate was after running gt30 and up turbos i had a slite lag in third gear. i did everything and could not seem to get rid of the lag. the bigger the turbo the greater the lag. at the time i was running a 280 l/h sard fuel pump. after changing the pump to an external pump that was rated for about 1000 hp, the lag was no more i think at those power level you need allot of fueling.

I hope this helps mate, as soon as i find my dyno sheet i will post it.

cheers.

[ali-turko]

my ass that turbo comes on full boost by 3800rpm, on a rb25

lets see the dyno sheet

[Super_Dude]

my ass that turbo comes on full boost by 3800rpm, on a rb25

lets see the dyno sheet

I think some people like measuring full boost while in 5th gear and up a very very steep hill

[MJTru]

Sorry mate my mistake i checked with ams performance. the turbo comes in at 3800 and full boost at 4500 rpm. this is about were i got full boost when i checked on the road driving. As for the dyno sheet i cant find it. Next month I'm taking the car back to the states I'll get a new dyno sheet then.

MY old turbo was gt35 and it was good for about 750 hp on Garrett web site.

the ams gt950r spools faster than the gt35 i know this for shore. and its good for 950hp on a t/3 framed turbo

that almost as much as a gt42r i think thats amazing.

[DriftinThruLife]

You're doing 750hp, and you lost by 2-3 carlengths? Man that's more than most lambos, and around the McLaren F1 mark. WTF steroids was this GTR on?

[mad082]

ok first of all, from watching the video i can say that your suspension is definately your first main problem. there is very little sag in the rear so you aren't getting enough weight over the rear tyres for traction. for drag racing you want soft rear suspension, not hard. the softer the better. and your camber probably doesn't help either.

secondly, are you heating the tyres up first or just trying to take off on cold tyres? if you are just taking off on cold tyres without doing a big smokey burnout first, that will be your second issue.

also your seem to be running a fair bit of air in the tyres in the videos (you might not be but it looks like it in the video). that will be your 3rd problem. let the tyres down and you will get much better traction. you'd probably only want about 15psi in the tyres.

as for your power, i'd say that the dyno you are on is reading a bit high. i saw in one of your other videos that you said you were making 600hp with a 3037 pro s at 20psi, which is quite a big gap to what everyone around here is making (like about a 200hp difference), so excuse me for calling bullshit. i'm sure that with that turbo the car is making decent power, but i'm not sure it's as high as you think/say.

since you were only running 12psi when you lost, i'm not suprised, although i'd say that your traction issues aren't because of your tyres but your general setup as you wouldn't be making that much power to fry the tyres if the setup is good.

also how old are the tyres? maybe they are old and have gone hard.

[Hibino]

I'm really not buying any of this...