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#16
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Re: High HP and launching in 2nd gear?
Well, personally, I dont think you need to be launching at 6500 rpms, lol. I mean no wonder you're having traction issues, lol.
I realize you need to build some boost so you can get out of the whole, but man! 6500 rpms in a stock 4-cylinder would smoke the tires I would think!
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**1966 Chevy II** ![]() 355 SBC, Turbo 400, 5.13 gear, IHRA Certified to 8.50 in the 1/4 Last Race (10-6-07) So its been awhile... Dial: 6.77, RT: -.0001, 60': 1.4360, 1/8th: 6.7942 @ 100.65 mph Fastest Pass of '07 (10-6-07) 60': 1.4360, 330': 4.3453, 1/8th: 6.7942 @ 100.65 mph 25 and in BIG TIME Debt Crew member #2 Deuce's Wild Racing: Take a Ride on the WILD SIDE
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#17
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Re: High HP and launching in 2nd gear?
I realize that in an ideal world, a different gear set would be in order. However, the only options for the turbo MR2 are Toyota Solora gears (which do not offer better options) or an extremely expensive set from an MR2 company in Japan. Having custom gears made is not exactly in the budget.
As for 6500 launches, you have to take a few things into account. Unlike a larger engine, like you would find in a domestic, I do not have any great torque down low. In fact, I only make 200 ft lbs at 4300 rpms. I am also running on a 275 drag radial at 15 psi of tires pressure ... far cry different from the OEM 195s (or was it 205s) ![]() I am not really having a traction issue launching at the drag strip. I am consistently cutting 1.5s, so I am pleased there. I am having HUGE traction issues launching at the hill climb since we are on public roads and I am running a fully pressurized road race tire (265) with no burnout. That is why I tried 2nd gear laucnhing there. Since I noticed that I have enough power to get 2nd gear going there, I started wondering if there would be an advantage at the strip. Keep in mind, we are talking about eliminating an entire shift! Imagine going a 120 mph 1/4-mile in a 5=speed and only having to shift twice!
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Sponsorship: Amateur Motorsports <-- Get the book! - books are now available for shipment |
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#18
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Re: High HP and launching in 2nd gear?
I don't think you'd have a problem... you've got the power to do it.
Less shifts means less chance of a goof-up, and less time lost to shifting. I wouldn't be surpised if you gained a .1-.2 a second and a few mph.
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2003 Chevy 1500HD - Hauler 1971 Chevy Camaro RS - Track Car User Guidelines It's important to read, like the Bible. But unlike the Bible we will strike you down if you jerk off around here. |
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#19
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Re: High HP and launching in 2nd gear?
Well, that makes sense.
And as for launching 2nd, I dont see what difference it would make. You may not be able to pull off 1.5s, but I bet your 1/8th and 1/4 ET and traps will pick up. There's only one way to find out and that's try it! Go to a test-n-tune session or just try it in qualifying. I mean if doesn't work, all you lose is one pass, you'll get one or two more to make it up!
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**1966 Chevy II** ![]() 355 SBC, Turbo 400, 5.13 gear, IHRA Certified to 8.50 in the 1/4 Last Race (10-6-07) So its been awhile... Dial: 6.77, RT: -.0001, 60': 1.4360, 1/8th: 6.7942 @ 100.65 mph Fastest Pass of '07 (10-6-07) 60': 1.4360, 330': 4.3453, 1/8th: 6.7942 @ 100.65 mph 25 and in BIG TIME Debt Crew member #2 Deuce's Wild Racing: Take a Ride on the WILD SIDE
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#20
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Re: High HP and launching in 2nd gear?
hello , can you tell , which car is faster se-r spec v or rsx-s
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#21
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Re: High HP and launching in 2nd gear?
i wanna know because allmost all people say rsx -s is faster which is not true because my friend got a white type-s 02 and we race 2 times , beat it so but that he doesnt wanna race again, i'm stock and he has i/h/e , computer , vitec regulator still slow,
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#22
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Re: High HP and launching in 2nd gear?
Your posts have NOTHING to do with this thread.
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1999 Pontiac Trans Am WS.6 #1747 Stock'ish' |
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#23
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Re: High HP and launching in 2nd gear?
I disagree completely re the launching in second gear. If first gear in your tranny is a bit on the low side(say 3.0) then you probably will go up in smoke quite a bit when launching at the strip. However, try launching in 2nd gear, but to avoid stall, launch at a higher rpm than you normally would in first. It may help launching this way to help kill off some of the low end torque which is what spins your tires while still moving the car out of the chute well enough to get a decent ET. This is the way many of us used to launch BB Mopars that ran manual trannies many years ago for much the same reasons as well as poor slick quality. Done right, it works well.
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