5 speed group N or 6 speed conversion
08 February 2011, 04:39 PM
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5 speed group N or 6 speed conversion
Hi as title i need a gearbox ive looked into getn a 6 speed conversion then i get the offer of a 5 speed 1st - 4th short shift helical cut group N box with a long 5th. My car is a 97 sti with walbro fuel pump, fuel pressure regulator, hks mushroom filter, front mount intercooler, exedy single plate racing clutch, apexi fc (andy forrest mapped), Gt spec2 exhaust manifold, 3" turbo back exhaust system i dont know its power thats why ive listed mods, but i will be looking into putting more power through it in the future. The car is used for track days only its not for the road, do i go for the 5 speed on offer or do i go for the 6 speed conversion which would anyone on here go for? There is a price difference between the 2 but put that aside for now. jeem
08 February 2011, 04:51 PM
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find out the specs of the five speeds box, sounds like a PPG gearset which are only rated to 450 lbs/ft iirc.
http://www.ppgearbox.com.au/
http://www.ppgearbox.com.au/
Last edited by trails; 08 February 2011 at 04:54 PM.
08 February 2011, 05:47 PM
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go for the 6 speed mate i have 2 freinds with big power scoobs 1 is 661bhp 650ftlb and the outher with 510 bhp 480ftlb both with 6 speed boxes and never had any probs mine has 360bhp 370ftlb and a 5 speed been rebuilt but i want a 6 speed as much stronger hope this helps
:-)
:-)
08 February 2011, 07:53 PM
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[QUOTE=trails;9869546]find out the specs of the five speeds box, sounds like a PPG gearset which are only rated to 450 lbs/ft iirc.
Hi forgot to say its a possum gearset
Thats what i was thinking i was more on the side of the 6 speed but was after some opinions, buy once an ready for any further mods to the engine, i do want to get some big power eventually but defo dont want to be buying another gearbox if a 5 speed runs out of puff when ive got the power
Cheer min thats the sort of info am after. cheers abody, jeem
Hi forgot to say its a possum gearset
go for the 6 speed mate i have 2 freinds with big power scoobs 1 is 661bhp 650ftlb and the outher with 510 bhp 480ftlb both with 6 speed boxes and never had any probs mine has 360bhp 370ftlb and a 5 speed been rebuilt but i want a 6 speed as much stronger hope this helps
:-)
:-)
09 February 2011, 10:16 AM
#6
Several people including me have run TY754 5 speed boxes with over 400bhp - in my case 450bhp/380ftlb torque- without problems.
If you're still on the standard turbo with those mods, then you are miles away from needing a 6 speed, but as said above if you plan getting silly in future then 6 speed is the way.
If you're still on the standard turbo with those mods, then you are miles away from needing a 6 speed, but as said above if you plan getting silly in future then 6 speed is the way.
09 February 2011, 07:25 PM
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i use to have a five sped box then i went to a 6 speed jap box and i would never turn back i have been driving a 5 spped of late while my car was having some work done and im so glad i have a six speed now its silky smooth quick gear changes and has never let me down runnign almost 400hp fit and forget thats the best way to put it
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