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Btr 4-speed Vs C9/c10


XR6Turbo22

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  • Member For: 17y 2m 1d
  • Gender: Male
  • Location: MELB STH EAST
Hey just thought I'd say the c9 can be made quite steetable and are a bit old school yes but if built right are just awsome at wot & also if the conversion is done by the right people it can be made to look very complimentry when the B&M shifter is fitted nice Eg. With the genuine shifter cover & matching leather boot.Also with the full manuel valve body you vertually have your tiptronic action feel about it.Also This conversion can be done right for around 7 grand.By the time you rebuild 2 4 speeds ( which is not uncommon ) your vertually there.But I will say fuel economy will change & vary depending on convertor size ect.Hope this helps on your decision making.

Sounds very familiar Danny!!!

Yeah I do agree, done properly the c9 is a great box and can look decent as said, ive had mine for a little while now and loving it.... :stirthepot:

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  • Member For: 16y 10m 16d
  • Gender: Male
  • Location: FTG, Victoria

I've been hearing the 3 speeds ain't all they've been cracked up to be.

Im considering doing a ZF conversion in my BA, but I haven't had a chance to see how reliable they are at the 350rwkw power levels! (Anybody know from experience?)

No point rebuilding your gearbox for 2500+ every 20,000kms when you could do the ZF for 8-9k and not have to worry about it for 80,000kms, anybody had a ZF rebuilt?

Edited by XRSCAR
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  • THE PSYCHO XRT
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  • Member For: 19y 17d
  • Gender: Not Telling
  • Location: At the lights!

I spoke to a transmission specialist enquiring for a ZF conversion and they said the 6 Speed's aint all that either as

quiet a few had failed and were very expensive to repair as you would expect...

A ZF conversion would cost about the same for a C9 conversion would and although it the [c9] consumes a bit more fuel,

they are however unbreakable?? Im still enquiring but yeh id have a ZF or a C9 anyday over a 4 Speed :stirthepot:

Edited by Varaitch
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  • 4 years later...
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  • Member For: 14y 21d
  • Gender: Male
  • Location: Sydney

I have a c4 in my car and I love it the fuel economy isn't great the weight of the car is the killer if I had my time all over again I would go a glide bigger clutches more reliable if you plan to leave with with big rpm on the transbrake good luck to you

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