Originally posted by fastdrive
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Nurburgring with my Z3M
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Originally posted by c_w View PostI only think it feels a bit short on the motorway, other than that it's perfect as the standard 3.15 just feels too long on a/b-roads and on track. At the Ring it is actually a bit too short for the long straight (requires red lining in 5th for half the length) if you are doing a full lap.
Ideal setup is a 3.46 or even 3.64 with a 6sp box though! Only slight problem with BMW gearbox ratios is the 1st is too short so with the lower diffs it gets quite noticeable, would prefer longer 1st and closer gap to 2nd.
But on autobahn no problems.... (255 GPS speed)
My 3:46 diff just broke down so Im not sure if I shall stick to that gear ratio or go for 3:64 or 3:73...
Ist hard to say whats best in a time perspective because you might win in some sections and loose in some others..
The 3:46 feels really good!
A 6-speed is not an option, its heavier!
Some people I know running trackdays in sweden have 3:73..
I more or less only drive on the Ring...///Fredrik Larsson
Z3M Coupe-99
M3-88
523iM-00
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Originally posted by Frixen Z3M View PostMy car (as you see in the vid) doesnt hit the rev limiter on Döttingerhöhe straight..
But on autobahn no problems.... (255 GPS speed)
My 3:46 diff just broke down so Im not sure if I shall stick to that gear ratio or go for 3:64 or 3:73...
Ist hard to say whats best in a time perspective because you might win in some sections and loose in some others..
The 3:46 feels really good!
A 6-speed is not an option, its heavier!
Some people I know running trackdays in sweden have 3:73..
I more or less only drive on the Ring...
Yes I believe the 6 speed is heaver (20kg?) a fair amount but I always think if I could take that weight off somewhere else it'd be useful addition plus the gearbox being in the middle and low down the weight it is in the best place if you HAVE to add weight somewhere.
I would stick with 3.46 it is a good alrounder, a 3.64 would def feel a bit too short on the ring, perhaps not on shorter "normal" circuits and on TF but on full ring lap definitely too short IMO.
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Originally posted by c_w View PostI would stick with 3.46 it is a good alrounder, a 3.64 would def feel a bit too short on the ring, perhaps not on shorter "normal" circuits and on TF but on full ring lap definitely too short IMO.
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Originally posted by fok View PostI know my engine's characteristics are probably nothing like S50/54 but my MC with a 3.64 feels geared too short for the road. With the stock 3.15 it felt way too tall. There will be a 3.46 going in over winter.
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Originally posted by c_w View PostInteresting, I always thought with a big V8 lump and slightly the 3.15 diff/gearing would feel short or at least easy for the engine to pull quickly?
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Originally posted by fastdrive View Postvery awesome vid!
The 3.46 diff seems very help on the hills and med curves,but i think it's too short on the road...BMW Polygamy
1988 E30 M3: stolen Zinnabarot/Tan
1991 850Ci: Sold.
1999 M Coupe: Sold
2002 M Coupe: (US Spec, S54) Custom Black/Black, Powerflo Headers, UUC short shift, RK6A, RAID silberfil, 3.73 LSD, Randy Forbes sub-frame kit, ACS splitters & roof wing, rear diffuser, SSR GT3 18" wheels
2006 Mini Cooper Sold
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