What to get?

$ gest24 $ · #1 04-14-2006, 10:01 AM

I'm going to be swapping out my 4HEAT for a MT tranny. My question to the SVX gurus. What should I go with? A 4.11 5MT or an STi 6MT? Is the weight between the 2 different and which is easier to swap in? I was thinking the 6MT would be easiest because of the axles being the same length as ours.

Mike621 · #2 04-14-2006, 10:08 AM

Tom? John?

Well, I can tell you the Sti 6mt winds at a much higher rpm than the 5mt... And the 6mt is much heavier than any 5mt. The 6mt transmission itself is also the same length as the auto (or very close... but im pretty sure its the same length) and the 5mt is significantly shorter. Swapping in a 5mt requires some lengthening of your driveshaft while I believe a 6mt swap does not.

Mike621 · #3 04-14-2006, 10:13 AM

The 6mt from the Sti is one of, if not the strongest, transmissions to install into the SVX. The 5mt from an 04+ WRX is also one of the stonger candidates.

I remember there being mention that the gears in the 6mt, at least the final ones could be swapped out from another car in order to get a taller final drive and a more comfortable cruising rpm.

The 5mt is excellent for people who have some sort of budget, and the 6mt is the best for people who can spare the expense of having a car they can "beat on" at the track and still have it come back unscathed every time.

EDIT: Might I also mention that the 5mt offers a 50/50 split of power to the front/rear wheels and the 6mt (when not hooked up to its dccd controller) offers a 35/65 split (rear bias)

There are other threads that explain more details, but I figure Id throw in my $.02

Nemesis Destiny · #4 04-14-2006, 10:53 AM

*The 6MT has the added hassle of swapping the rear end (R180 and axles), whereas the 5MT bolts right up to our 3.545 R160.

*The STi 6MT can have JDM Forester STi 5th & 6th gear ratios swapped in which are the tallest MT cruising gears available (Forester STi 6th = .707, compared to JDM 6th @ .842, USDM 6th @ .756, USDM WRX 5th @ .738). Talk to Mychialo about that one.

*the 6MT is also available in non-DCCD, which uses the same viscous coupling center differential as the WRX 5MT (50/50 split).

The cheapest (read best performance : price ratio) option is the 3.90 WRX 5MT. The 4.11 and 4.44 requires a new diff, just like the 6MT, though the gearboxes are still cheaper. The 6MT is probably the most expensive, but probably worth it if you plan to not drive like a little old lady.

This is just my 2 cents, but I've researched the topic fairly extensively, as I'm planning a swap in the next little while as well.

$ gest24 $ · #5 04-14-2006, 10:58 AM

Quote:

Originally Posted by Nemesis Destiny

*The 6MT has the added hassle of swapping the rear end (R180 and axles), whereas the 5MT bolts right up to our 3.545 R160.

*The STi 6MT can have JDM Forester STi 5th & 6th gear ratios swapped in which are the tallest MT cruising gears available (Forester STi 6th = .707, compared to JDM 6th @ .842, USDM 6th @ .756, USDM WRX 5th @ .738). Talk to Mychialo about that one.

*the 6MT is also available in non-DCCD, which uses the same viscous coupling center differential as the WRX 5MT (50/50 split).

The cheapest (read best performance

rice ratio) option is the 3.90 WRX 5MT. The 4.11 and 4.44 requires a new diff, just like the 6MT, though the gearboxes are still cheaper. The 6MT is probably the most expensive, but probably worth it if you plan to not drive like a little old lady.

This is just my 2 cents, but I've researched the topic fairly extensively, as I'm planning a swap in the next little while as well.

I've been talking with Tom about the full on swap. I wasn't going to keep many stock drive line parts. I know the diff and axels will need swapping.

$ gest24 $ · #6 04-14-2006, 12:34 PM

Has anyone got the DCCD to work? That'll be sweet to have an SVX that can give a WRX a run for its money!

$ gest24 $ · #7 04-14-2006, 10:55 AM

Quote:

Originally Posted by Mike621

d every time.

EDIT: Might I also mention that the 5mt offers a 50/50 split of power to the front/rear wheels and the 6mt (when not hooked up to its dccd controller) offers a 35/65 split (rear bias)

There are other threads that explain more details, but I figure Id throw in my $.02

Rear biased!?!? I'm so in! I figured I might as well put the 6MT in since the SVX will eventually get force fed.