racing launch rpm, I KNOW YOU RACE!!!EVERYONE DOES.. Options

[RUNNIN-LOW]

well this is a probably a re-post but what rpm do you launch at when you race...come on guys i know everyone on here has done it and will be doing for or till when ever..but yeah whats the best numbers to launch..rpm wise i mean...SWAP AND NO-TURBO...

[ZacMan1987]

What? Drag? Street? Rally? AX? It all depends. This is covered somewhere in "your first day at the drag strip" I think.

Plus there's a lot more to launching than RPMs.

This post has been edited by ZacMan1987: May 15, 2006 - 11:01 PM

[Glitch001]

there are a lot of factors involved, flywheel/clutch type and strength, ect ect.

for me i launch at about 5500 rpm with a spec stage 3 and a fizdanza 10lb flywheel for the drag strip

[CelicaGT04]

there are a lot of factors involved, flywheel/clutch type and strength, ect ect.

for me i launch at about 5500 rpm with a spec stage 3 and a fizdanza 10lb flywheel for the drag strip

Not to rag on you here, or steal the thread but are you wanting to spin through 1st?
Especially with the flywheel, you would easily get beat off the line smoking those tires!!!


** Back to the thread**
Personally for me since i have a GT i launch anywhere from 2500RPM-3000RPM
Anything more and i will slip and lose any chance of beating any car.
That launch is for a drag**
Never raced street, rally, or AX.

Not to mention our torque peak is 4400RPM so anything over it and your torque band/curve
would be flat.

But then again i am no mechanic and these are just my opinions from reading around
on forums and what not. Hope this helps.

--GT

This post has been edited by CelicaGT04: May 15, 2006 - 11:29 PM

[dlx742]

i launch at 3.5 k.... pretty much the bottom of the 5s powerband... which is where you should launch on any car

[CelicaZR]

2500-3000 rpm for the 5sfe

This post has been edited by CelicaZR: May 16, 2006 - 4:52 AM

[Glitch001]

there are a lot of factors involved, flywheel/clutch type and strength, ect ect.

for me i launch at about 5500 rpm with a spec stage 3 and a fizdanza 10lb flywheel for the drag strip

Not to rag on you here, or steal the thread but are you wanting to spin through 1st?
Especially with the flywheel, you would easily get beat off the line smoking those tires!!!

Really? I haven't been beaten off the line much, my friends evo takes me everytime. Oh, btw those numbers are for an mr2, not a celica. I dont have the traction problem, and the high rev helps with 285 tires in the rear with the LSD. Besdies my turbo spools by 3800 or so, while slipping the clutch it helps build boost to 22 so im not waiting so long to hit full power.

This post has been edited by Glitch001: May 16, 2006 - 3:54 AM

[tufy]

it depents on your max torque rpm..
i launch at 6000-6500 rpm which i have my max power.

[CelicaGT04]

there are a lot of factors involved, flywheel/clutch type and strength, ect ect.

for me i launch at about 5500 rpm with a spec stage 3 and a fizdanza 10lb flywheel for the drag strip

Not to rag on you here, or steal the thread but are you wanting to spin through 1st?
Especially with the flywheel, you would easily get beat off the line smoking those tires!!!

Really? I haven't been beaten off the line much, my friends evo takes me everytime. Oh, btw those numbers are for an mr2, not a celica. I dont have the traction problem, and the high rev helps with 285 tires in the rear with the LSD. Besdies my turbo spools by 3800 or so, while slipping the clutch it helps build boost to 22 so im not waiting so long to hit full power.

well considering this is a celica forum i would only come to the conclusion that you had a
celica. Im pretty sure you dont have traction problems with a mr2. But if it was a celica i would
say you were an idiot. Sorry for the miscommunication.

--GT

[Mr_E]

Depends how badly I want to hurt my clutch.

Wheelspin isn't an issue for me. Bogging down certainly is. Full bore is usually 5K+ and a fairly agressive release (although not a sidestep).

[burneeed]

With new tranny spec 3 and flywheel... 3sgte/e153... I tryed to launch from 4k yesterday and it was perfect. When I had the old setup with the puck clutch and the s54 I would do nothing but burn tire launching around 3k.

[lagos]

i never lauch my car. 90% of the racing ill do is from a roll anyway and a hard lauch is a good way to break stuff.

[burneeed]

if your not breaking it your not driving it right

[Glitch001]

there are a lot of factors involved, flywheel/clutch type and strength, ect ect.

for me i launch at about 5500 rpm with a spec stage 3 and a fizdanza 10lb flywheel for the drag strip

Not to rag on you here, or steal the thread but are you wanting to spin through 1st?
Especially with the flywheel, you would easily get beat off the line smoking those tires!!!

Really? I haven't been beaten off the line much, my friends evo takes me everytime. Oh, btw those numbers are for an mr2, not a celica. I dont have the traction problem, and the high rev helps with 285 tires in the rear with the LSD. Besdies my turbo spools by 3800 or so, while slipping the clutch it helps build boost to 22 so im not waiting so long to hit full power.

well considering this is a celica forum i would only come to the conclusion that you had a
celica. Im pretty sure you dont have traction problems with a mr2. But if it was a celica i would
say you were an idiot. Sorry for the miscommunication.

--GT

I completely agree with you, fwd and revving that high is no good. Hey tuffy you have quite a strong bite with that 3s, I was wondering if you did the shimless bucket conversion while doing headwork. Also what octane at what PSI do you usually run in your car with the gt35r, im finding some serious problems cracking 425rwhp on my mr2 and would love some advice if yoiu had some.

[CelicaBuddy]

heheh i havent raced

[pure_dx]

2800-3200 rpms, street tires on the streets, havn't drag on the track yet

[ZacMan1987]

^That's a good way to die^

[pure_dx]

^i know the consequences, i know my limitions and intentions, always in a safe way^ back to the subject, i forgot to mention engine 7afe N/A minor bolt ons

[creamed_corn]

You guys are launching too high. For general dry pavement and typical tires, hold it at 1500rpms and dump the clutch--zero wheel spin and no rpm loss, just straight power and traction. You'll have no trouble smoking almost any car up to 40mph.
EDIT: for 5S.

This post has been edited by creamed_corn: May 17, 2006 - 12:08 AM

[Jeremiah]

You guys are launching too high. For general dry pavement and typical tires, hold it at 1500rpms and dump the clutch--zero wheel spin and no rpm loss, just straight power and traction. You'll have no trouble smoking almost any car up to 40mph.
EDIT: for 5S.

Ditto - our cars are unique in that they get torque down low - most 4 bangers need high RPM launches - our (stock) celicas don't need to be reved much.

~J~

[97sccelica]

well, my ST was auto

but i would powerbrake it

so launch rpm would be ~2500rpm and 7 or 8psi

with the wrx, lol 5500rpm and 10psi(i love launch control)

making boost while standing still is awesome

[tufy]

I completely agree with you, fwd and revving that high is no good. Hey tuffy you have quite a strong bite with that 3s, I was wondering if you did the shimless bucket conversion while doing headwork. Also what octane at what PSI do you usually run in your car with the gt35r, im finding some serious problems cracking 425rwhp on my mr2 and would love some advice if yoiu had some.

i have jun 272 deg camshaft kit (inc. titanium retainers and high pres. springs) triangle valve job, full race porting and polisind on head. with that set up i can have rev. limit arround 8400rpm easly.
i am running with 100 octane fuel. 0.95 bar daily 1.5 bar at race. i have gt 35 r 1.06 a/r that starts arround 3500 rpm and have max boost at 5300 rpm. that means i need high rpm at launch and when shifting.

[pure_dx]

You guys are launching too high. For general dry pavement and typical tires, hold it at 1500rpms and dump the clutch--zero wheel spin and no rpm loss, just straight power and traction. You'll have no trouble smoking almost any car up to 40mph.
EDIT: for 5S.

not a bad idea, i tried it but it doesn't take off as quick as if i launched at 3k when the tires hook

This post has been edited by pure_dx: May 18, 2006 - 10:50 AM

[SlowCelica94]

I always lauched at 4,400 rpm, right where our the 5s's torque peak is. You gotta slip the clutch tho, or it's wheel hop hell.

This post has been edited by SlowCelica94: May 20, 2006 - 6:58 PM