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| Joined: | 03-17-2005 |
| Location: | Warmond, Netherlands |
| Posts: | 216 |
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personally i chose the W58 as it was used in the Lotus Excel which has the 2.2L engine with higher compression, more BHP and torque then the JH 907.
Since my new engine is a 2.2L now with over 210 BHP and around 180 ft/lbs of torque i felt the original 4sp might not be able to handle the new amount of horse power. the W55-58 can handle up to 300 BHP so more than adequate for my engine.
I wanted a 5 speed for high way cruising. NOTE there are 5sp close ratio boxes available on request as well! meaning 5sp 1.00:1, which i love but cannot use for street purposes or rather my driving intentions.
the W58 first gear's lower ratio will improve taking off from a dead stop and the 0.78:1 5th gear makes highway cruising ideal.
I used to drive 120 KM/HR in 4th gear. At that speed my 2.0 907 engine runs at 4000 RPM and you know what that means :) .... lots of noise, which is fun but not after 30 minutes. So shift to the W58 5th and it will drop almost 1000rpm which is then still 3000 rpm
the W55 might be a better choice for you, but it all depends on your engine and your driving. Good luck.
Erik, The Shark #15175, Netherlands