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Technical
Gearbox ratios for performance engines
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<blockquote data-quote="Haveacamper" data-source="post: 614985" data-attributes="member: 2051"><p>Thanks Tofufi. I was actually reading your 5-speed conversion the other day before I wrote my thread. A 5-speed would certainly be beneficial! </p><p></p><p>It seems that Weddle do a first and second gear combination mainshaft with 3.11 and 1.93. Which would give the overall ratios (with my already longer 3rd and 4th) as:</p><p></p><p>1st - 14.22</p><p>2nd - 8.82</p><p>3rd - 5.37</p><p>4th - 3.47</p><p></p><p>Again, 1st is still shorter than the box the engine was originally paired to, but dam sight closer than the 17.37 from stock 091 box. regarding maintaining cooling, the 915 ratios are the standard ratios for the porsche engine, so as long as I dont go taller than that, then I should be good. I'll be ensuring my cruising speeds at 100, 80, 60 kph etc are reasonable.</p><p></p><p>@Karlos, I would be very interested to hear how you go with the new box paired onto the new engine</p></blockquote><p></p>
[QUOTE="Haveacamper, post: 614985, member: 2051"] Thanks Tofufi. I was actually reading your 5-speed conversion the other day before I wrote my thread. A 5-speed would certainly be beneficial! It seems that Weddle do a first and second gear combination mainshaft with 3.11 and 1.93. Which would give the overall ratios (with my already longer 3rd and 4th) as: 1st - 14.22 2nd - 8.82 3rd - 5.37 4th - 3.47 Again, 1st is still shorter than the box the engine was originally paired to, but dam sight closer than the 17.37 from stock 091 box. regarding maintaining cooling, the 915 ratios are the standard ratios for the porsche engine, so as long as I dont go taller than that, then I should be good. I'll be ensuring my cruising speeds at 100, 80, 60 kph etc are reasonable. @Karlos, I would be very interested to hear how you go with the new box paired onto the new engine [/QUOTE]
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Technical
Gearbox ratios for performance engines
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