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#1
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what is the s12 geared for and will the s13 diff alter the gearing, what would mine be capable of at 6800rpm with 340bhp on 225/45/17's,come on martin this ones for you, serious answers though people.
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#2
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The S13 diff doesn't alter the gearing.
Providing an engine can pull to 6.8k in 5th with 225/45/17's the top speed will be: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172.2mph ![]()
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#3
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what have you had yours to in fith martin rpm.
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#4
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I haven't tried taking it past 6000rpm, which is about 147mph in my car.
I let Adam have ago, and I'm sure the pisstaking bastard took it past 6, I had to tell him to let off.
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#5
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i know that ken did a 137mph at elvington, not sure of his bhp at the time, he got about 2mph more than alan spensley who has a rb25 with exhaust and filter, i just wanted to give it a run before i take the engine out for good.
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#6
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To get to the top speed of a car it prob takes a minute to build up its last 10mph.
Thats quite a distance, so i imagine he didnt hit top speed
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#7
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how do you work that top end of 172 mph out...???
intresting to see what a s13 lump pushing 350bhp + 50 (75 poss) shot of nos will achive, standard gear box & diff (uprated clutch & lighten fly)... hhmmmm
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if it's got tit's or wheels, it's gunna give you grief.! ![]() |
#8
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o, and it pull 7.2k in 5th & has 2154017's on the rear...
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if it's got tit's or wheels, it's gunna give you grief.! ![]() |
#9
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![]() Quote:
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![]() Currently 226.4bhp@13psi with a remap to 18psi coming very soon ![]() |
#10
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![]() ![]() ![]() ![]() 172mph was worked out using the gear ratios etc. 7.2k on 215/40/17 would be 174mph providing it could pull to that rpm in 5th.
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