6speed conversion

[Trent]

i have a v4 sti type r i have now got a v7 sti 6speed and rear diff d/shaft hubs axles etc. just wondering if it will all bolt up . also do i need to use the 6speed shifter linkages or just use the v4 linkages

cheers trent

[Wiretap]

You need to use the 6-speed shifter if you ever want to go backwards again.

Most of it will bolt up, however you will need for certain to use that driveshaft as they're incredibly short.

I believe you will also need to mount a stud for the bottom starter bolt as the 6-speed is for an 8-bolt block.

There may be other issues as I have not done this conversion myself, however for the most part The Lego Effect ™ applies.

Note that if you use the rear 6-speed hubs you will need the Brembos to match as your standard calipers will not work.

[funkytown]

If he runs 2pot rear (r180), they are exactly the same bolt pattern as brembo rears and no need to change afaik..? Just need to change the rotor to match the brembo caliper. You can also get single pot rears that are made for r180 and also are the same bolt spacing. v4 r should have 2 pot rears in r180 afaik. Note you can also do a 6speed conversion on r160 but different rules apply to axles and hubs.

You do need a 6 speed linkage as mentioned, and either the drive shaft that came on the 6 speed, or one from an 4speed auto - they are the same length.

You can just use a normal bell housing bolt instead of a stud for the starter, they just wind out / in etc, its mix and match.

Remember you can also use your 5 speed starter if you like, but you must match the flywheel, starter and clutch assembly OR replace all with the 6speed / stater / flywheel / clutch.

The clutch fork used should always match the box your running, 5mt is a different shape to 6mt., the type of clutch / flywheel / starter combo does not affect the fork you need to use.

You also can reuse the bulk of your old gearbox mount, except the little piece that directly connects to the box - you need the 6mt one.

edit: clarification of historical content.

[X]

are you in Auckland? im going up there to do a 6spd swap for my nephew this weekend.

[Trent]

thanks for all the info guys yes im in auckland. my type r is v limited and came with 1 pot rears and r160 diff just so you know haha but im taking my mates entire rear subframe brakes diff etc. plus ive got the linkages and g/box plus crossmembers. just a little confused with the starter motor part now as you mentioned i need to put a stud in?

[Wiretap]

 Trent said:

thanks for all the info guys yes im in auckland. my type r is v limited and came with 1 pot rears and r160 diff just so you know haha but im taking my mates entire rear subframe brakes diff etc. plus ive got the linkages and g/box plus crossmembers. just a little confused with the starter motor part now as you mentioned i need to put a stud in?

Youll need a 3.9 ratio R180, the 4.444 ones are no good as 6MTs are 3.9 final drive

[Trent]

yea im using the 6 speed diff out of the wreck