13.4 second 1/4 for your 'stockish' R33. (A how to guide).

[Guest MFX_R33]

What was your 60ft?

Jeff.

[rev210]

he got 2 flat! a great effort.

[DennisRB30]

Well then rev210, if you done a 13.3 with a 2.3 60ft a high 12 will be closely within your reach with some decent tires for sure :burnout:

Great work Motox Your time is simply brilliant considering you only have a catback zorst and boost upgrade. What size/brand tires do you use? I will be very interested to see how your upcoming cooler upgrade will affect your ET

[Guest MFX_R33]

I have heard that .2 secs on the 60ft is worth .3 at the E.T. So Rev Should easily be able to crack a 12 with a good launch (as I am hoping to).

Jeff.

[Guest IWANTR33]

Having read only a small part of this boards I am completely lost amongst information. I think I'll go back to basics and start from there.

Man you guys know you're stuff

*Impressed having learnt how little I know.

[4 Doorz]

I think i have ended up spending the same since I bought a FMIC and Apexi PFC (both can be got thru Nengun.siteblast.com for a total of $2500) but I didn't get the following parts listed in first post:

* Diff Cradle kit or 'pineapples' , the Whiteline kit No. KCA349.

* Ogura Lightwieght flywheel 4.8kgs.

* Ceramic puck sprung clutch and stock pressure plate

* Wrapped turbo to intercooler pipe (DEI thermal tape).

did [email protected] on road tires.....found the PFC better base (although I understand you did swap emanage for SAFC)

[benm]

Thats a great result for what seems like some light mods.

What sorta power are u making and what size tyres ?

[rev210]

Originally posted by 4 Doorz

did [email protected] on road tires.....found the PFC better base (although I understand you did swap emanage for SAFC)

good stuff! Excellent work on the standard turbo too.

The 60ft times are real good for road tyres. Gezz 1.9, I could only dream of doing that time on the 205's , would give me an easy 12.8 if I could get that.

Post up the time slips when you can we need more evidence that the R33's aren't just big whales.

[Guest MFX_R33]

4 Doorz, what tyre pressure were you running also?

You were running normal street tyre pressure in yours weren't you Rev, if you let them down to about 12psi or so, your traction would be heaps better, and your 60ft will lower dramatically.

Jeff.

[benm]

12psi? I'd be scared to run my tyres that low....

[Guest MFX_R33]

Basically the larger the surface are of the tyre touching the ground the greater the traction. The surface area of the tyre on the ground is basically the weight on the tyre divided by the pressure in the tyre. eg. if there is 12psi (12 "pounds per square inch") in the tyre and say there is 600 pounds of weight on that corner. Then the tyre will distort until the entire weight on the tyre is spread over 600/12= 50 square inches. If there were 30 psi in the tyre then the contact area would be 600/30= 20 square inches.

You can see that lowering the pressure GREATLY increases contact with the road, which increases traction.

Jeff.

[benm]

I understand that... although I thought it would have got to a stage where too little is too much.

[Guest MFX_R33]

There are other factors that come into play, like side wall flex, and tyre heat. The more the tyre distorts, the more the tyre will heat up which will work against you, but you are only talking about a very short period of time, and I am not an expert, but even if you don't lower them as far every psi of pressure you drop has a marked improvement on the contact area. This is why Drag cars use extremely low tyre pressues (also have soft sidewall's as well).

Jeff.

[rev210]

ran mine at 19spi left and 14.5psi right, last time (13.3 & 2.3 60ft). I completely stuffed it up when I let them down.

Normally I run 19psi in both I just misjudged.

12psi is too low for a street radial. A bit low for a slick as well.

[4 Doorz]

MFX...if you run radials that low, the centre of the tire (which you see from behind) actually starts to raise up and the edges form two "bicycle tires"...you will end up with a not as much traction say as at 19psi. - Drag slicks are built to take 12 psi while road tyres are built for higher pressure, I think at least.

I am using some cheap federals I got with the car 235/40 on 18in. Was running them at 27 psi for 1st run then 25 for sec run.

My car was dynoed 192 rwkw by Gavin Woods (and ran a 13.2) but since then I have changed the tune a fair bit to get times down

[Guest Robo's]

Excelent times, Excelent mph too. Why is there so much difference between your times and the rest of the pack, besides REVS

[Guest MFX_R33]

Look at the 60ft for starters.... That is a good launch.

Jeff.

[Guest Robo's]

Excelent 60 footers, anything sub 2.0 with street tyres is superb, 2.1 is damn good too

[benm]

1/4 Mile R33 GTS-T times...

[dojobi]

Ben, good to see you're keeping it up to date. Maybe a list of mods next to the times would be good?