Gearbox/Diff problem
I have a Type R V5 and just changed the engine. (2.5) This engine rev’s to 7000 so decided to change diffs for longer legs. Had 3.9 front diff fitted and a diff and shafts from a JDM STI 7. Is this right?
Thought I would have speeds of : STi 5/6/P1 Gearset and std uk diffs (3.9): Maximum Speed per Gear: 1st: 40.7 mph 2nd: 68.4 mph 3rd: 99.3 mph 4th: 132.5 mph 5th: 174.5 mph Taken from an earlier thread. But I find that at 3500 rpm I am doing 72 mph in top (5th) This = 144 mph @ 7000 That’s no where near the speed shown above. The speedo seems to be reading low (about 4-5 mph at 70 mph) so used a GPS and get my figs. Where have I gone wrong? |
Stupid Boy, Low Ratio Gearbox
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Surely if you have UK front diff, you should have UK rear diff, not JDM....??
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Originally Posted by RON
Surely if you have UK front diff, you should have UK rear diff, not JDM....??
All the 6 speed diffs are now 3.9's which is the same as UK diffs. Been offered a deal with ScoobyClinic for a 6 speed box. To good a deal for me to refuse. Oh well its only money. |
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