Blitz

iTrader: (11)

It seems like a fairly often occurrence when someone in the market for an VIII or IX makes a thread here asking about the 6-speed. You know, just how "bad" is it compared to the 5-speed? And invariably, that person will get lots of posts from people either telling him to stay away from the 6-speed like the plague and lots of posts from 6-speed owners telling him they love their cars. This happens every time.

It seems like a good idea to me to have a more scientific way of ascertaining just how problematic the 6-speed has been for the Evo community. Hence this thread.

If you have/had a 6-speed and it failed on you, please post in the following format:

- username
- VIII or IX MR
- Mileage when failure occurred
- Approximate wheel horsepower and wheel torque when failure occurred and what type of dyno (if stock/stockish, just say that)
- What failed (4th gear, for instance)
- Cause/circumstances of failure (road racing, drag racing, street, etc.)
- Did you take any special measures to prevent this failure? (Oil cooler, etc.)

If, on the other hand, you have/had a 6-speed and have had no (major) problems, please post in the following format:

- username - current mileage - approximate whp/wtq and type of dyno (or stock) - if you race, specify road/drag - oil cooler (only if it applies to you)

I will begin the list in the second post and update it as often as I can. Hopefully this will help shed some more light on the 6-speed's tendency (or lack thereof) to fail. If anyone has any ideas about how I could improve the list to make it more helpful, I'm all ears.

Mods, this might be a good sticky if I get the feedback I'm hoping I will. Maybe in the Engine / Turbo / Drivetrain forum if not General?

Thanks in advance for your contributions.

Blitz

iTrader: (11)

List of 6-speed failures:

mcjonnyp
IX MR
43,000 miles
370 whp
Issue: Third and fourth gear grinds at idle car will get stuck in third and 4th wont go in
Cause/circumstances: Failure probably due to hotlapping. Car also did many drag passes with no-lift shifting and no cool-down time.

razorlab
VIII MR
32,000 miles
340 whp / 320 wtq (Mustang dyno)
Issue: 4th gear shredded teeth
Cause/circumstances: Track use (TRE said heat killed it)

MR DAN
IX MR
15,200 Miles
300 whp
Issue: Failed mainshaft bearing (the sound is like having a dog-box tranny).
Cause/circumstances: 11 track events with factory tranny fluid change prior to any event

List of 6-speed users with no major problems:

Blitz - 24,000 miles - 300 whp / 300 wtq (Dynojet) - occasional autocross and drag
kanyonkid - 36,000 miles - 320 whp - lots of road racing and occasional drag
EvoJoeIX - 22,000 miles - 370 whp (Mustang dyno)
olmoscd - 30,000 miles - 400 whp (Mustang dyno) - occasional drag
Meeh Lucky IX - 17,000 miles - 500 whp / 407 wtq (Mustang dyno) - drag car
jxs1984 - 52,000 miles - 320 whp / 320 wtq (Dynojet) - occasional drag
Silver06evo9mr - 61,000 miles - 325 whp / 331 wtq (Dynojet) - lots of drag
TouringBubble - 26,000 miles - 330 whp - lots of drag and autocross
WickedWhtMR - 55,000 miles - 330 whp / 300 wtq - lots of drag w/ no lift shifting - grinds but has not failed
pogo - 74,000 miles - 340 whp / 340 wtq - lots of drag and occasional road racing
spdrcr456 - 125,000 miles - 330 whp / 334 wtq (DynoJet) - occasional drag and autocross
rane - 34,000 miles 323 whp / 310 wtq (DynoJet) - occasional drag
chaotichoax - 20,800 miles - 352 whp / 341 wtq (Dynojet)
Erik@MIL.SPEC - 100,000 miles - 333 whp (Mustang dyno)
Kdash106 - 35,000 miles - 320 whp
vd - 25,000 miles
EvolvedMR - 10,600 miles - 330 whp (DynoJet) - lots of road racing
Clutchdc5 - 48,000 miles - won't go into any gear at a dead stop, hard to get into first, but smooth when rolling
Kuslowski - 30,000 miles - 320 whp - lots of autocross
timmiii - 43,000 miles - 300 whp / 290 wtq (DynoJet) - occasional road racing
berniEVO - 38,000 miles - notchy 2nd gear, 4th gear grinds on fast/redline shifts, and 5th gear lockout when shifting fast into 5th from the top of 4th.
HyaboostaIX - 46,000 miles - 310 whp - occasional drag

kanyonkid

iTrader: (33)

36000 miles, 320whp, 30k of hard canyon running and roadracing, maybe went down the dragstrip 10 times... abosolutley NO PROBLEMS

EvoJoeIX

iTrader: (16)

evojoeix- 22,000 miles- 370+ whp/wtq on mustang dyno - DD/ lots of spirited driving/ never tracked.... NO PROBLEMS AT ALL

redleg225

iTrader: (14)

400WHP (MD), 30,050 miles, ACT clutch. A "few" drag passes and dyno sessions. No grinding or slipping, and shifts like a champ. Stock oil cooler, only mitsu fluids (changed 3 times).

Wes get in here!

Meeh Lucky IX

17k miles 500whp MD aprox. 590whp DJ using a Quarter Master Twin, the car is used as a drag car

1320 Engineering

iTrader: (21)

43000 miles 370 whp
act hdss clutch
lots of drag passes
oem fluids only
third and fourth gear grinds
at idle car will get stuck in third and 4th wont go in

edit: failure probably due to hotlapping

RazorLab

iTrader: (8)

05 MR - approx 32k at time of failure - 340whp/320wtq on mustang dyno with track tune - 4th gear shredded teeth - track use (TRE said heat killed it)

There is a thread about this in the motorsports forum from 2 years ago with lots and lots of info.

https://www.evolutionm.net/forums/sh...221&highlight=

Blitz

iTrader: (11)

Thanks, I've read a good deal of that thread. I wanted to make a more organized database.

RazorLab

iTrader: (8)

btw the torque is what kills the 6speed. I would suggest listing torque as well in replies

1320 Engineering

iTrader: (21)

I think in my case it was excessive heat and no-lift shifting
did about 5 passes without letting the car cool down lol

Blitz

iTrader: (11)

Good idea. Will do.

jxs1984

iTrader: (17)

52k miles - 3 yrs ago, conservative tune, i made 301/295 @ 20psi on a dynojet... right now i would assume around 320/320 @ 23psi with buschur licp and o2 dump. this is my DD and i am on my 3rd clutch (two oem clutch crapped out. currently using ACT XT w/ street disc.) tranny fluid changed 3 times. stock oil cooler. have went to the drag strip maybe 4 or 5 times. replaced t-case @ 35k miles, 1 year later after doing donuts on dry pavement.

Silver06evo9mr

iTrader: (47)

Silver06evo9mr - 61,000 miles - 325 whp / 331 wtq (dynojet) - DD and drag car, Has been driven the hell out of since day one. Replace T case due to lanching car many many times on stock clutch.

WickedWhtMR

iTrader: (13)

05 MR 330hp/300tq. Rebuilt at 30,000 miles. Previous owner abuse. About to be swapped for a 5 spd @ 55,000 miles. Trans grinds in 3rd and 4th. Bad synros... overly aggressive clutch+aggressive driving+no lift shifting+drag launching.