FI transmission gearing

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Aug 28, 2006 | 01:34 PM

#41

helldorado

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From: NJ

Quote:

Originally Posted by rookie

The Q has had a few FD ratio. I thought I saw a 3.1 on an older spec sheet, and 2.9 on the 07 http://autos.yahoo.com/newcars/infin....v7RZs4F?p=all

Pretty sure the Q uses the RE5R05A.

Q does use a variant of the RE5R05A, but its not based on the FM platform so I'm not too sure if that would work or not. When you're on a shared platform, likelihood of parts being interchangeable is higher.

Aug 28, 2006 | 01:40 PM

#42

rookie

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From: OC

Wonder if we can find a service manual for the Q. 2.9 is crazy tall for a 5AT but might work for some of these 6MT horsepower monsters.

Aug 28, 2006 | 01:49 PM

#43

Audible Mayhem

My350z

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do what i am doing and convert it to a three speed, i will have first somewhere around 2.75, second around 1.57 and third will be 1.00

th 400 three speed clutchless manual transmission.....

Aug 28, 2006 | 02:35 PM

#44

helldorado

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From: NJ

Quote:

Originally Posted by Zreign

The ultimate conclusion to the gear ratio debate in the honda world has become personal preference. Emphasis has been moved to gaining traction instead of messing with ratios.

...

Gear ratios are just one aspect of the total package when it comes to overall performace. They are a reflection of both the tune of the car and the preference of the driver. From personal experience and with traction issues addressed, shorter ratios (a.k.a. stock Z tranny ratios in this case) will be faster than long gears.

...

My plans with the Z involve keeping the stock ratios and reinforcing the internals to take higher revs. then its just time to practice,practice,practice once i start driving with the kind of hp and tq FI provides.

Excellent points. Tractable horsepower should be a goal for just about everybody who wants to optimize times/speed. How you decide to get there is largely personal preference since there are multiple paths, but building a car that is easy to drive and harnesses all of its power effectively is what ultimately makes a fast car.