Is there a definitive opinion on the 6 speed?
Apr 22, 2008, 02:56 PM
#16
Evolved Member
iTrader: (6)
Join Date: May 2006
Location: From Vegas to Reno
Posts: 731
Likes: 0
Received 0 Likes
on
0 Posts
No problems here yet. Hoping I dont jinx myself in this thread though. I change my tranny fluid before each event, and Im using castrol syntorq LT (the mopar stuff) bought from quad4x4.com. Runs like a champ. The other day they opened up the track and just went open session for like 4 hours, and after about 30 mins on track I felt it getting notchy. Just brought her in and let her cool down. Just be aware that it could happen, but if you take care of it should be ok. Im putting down 380 torque on a dynojet btw, so way over the recommended. Just take care of her. Change the fluids they wear out quick with heat and friction/heat is the problem with the gears fragging.
Apr 24, 2008, 06:04 PM
#17
Evolved Member
iTrader: (12)
Join Date: Jul 2005
Location: Westchester, NY
Posts: 1,404
Likes: 0
Received 0 Likes
on
0 Posts
Lets make this easy... If you track the car, with or without the cooler and regardless of how often you change the gear oil etc. the 6-speed will fail you...or should I say 4th gear will. In my case it was while leading by a considerable amount at Road Atlanta (SCCA T2 National Race) this past Easter...
Jon @ TRE is working on a 5-speed for a swap as we speak. The 6 Speed is fine for a daily driven street car with near OEM WHP, if you track it, it will fail... it's like a time bomb... trust me I had everything you can done to one, changed the MT-90 in it every race or more often in some cases, ran a cooler since day one...although I hammer the car to be competitive, I also heel/toe and keep the shifts smooth since it also helps the car to handle better too
For the track guys...buy a 5-speed car to begin with and save yourself the trouble of doing a swap (like me) later on...
Oh and even with the 5-speed its not bulletproof so be nice to it or you'll have issues as well... Marty seems to go through 5th Gear Syncros every so often.
Jon @ TRE is working on a 5-speed for a swap as we speak. The 6 Speed is fine for a daily driven street car with near OEM WHP, if you track it, it will fail... it's like a time bomb... trust me I had everything you can done to one, changed the MT-90 in it every race or more often in some cases, ran a cooler since day one...although I hammer the car to be competitive, I also heel/toe and keep the shifts smooth since it also helps the car to handle better too
For the track guys...buy a 5-speed car to begin with and save yourself the trouble of doing a swap (like me) later on...
Oh and even with the 5-speed its not bulletproof so be nice to it or you'll have issues as well... Marty seems to go through 5th Gear Syncros every so often.
.
Apr 25, 2008, 08:54 AM
#18
SRT-TO-EVO,
Please understand that road racing will take it's toll on the 6speed. While there will be those who can make impressive power through that 6 speed without immediate failure it will eventually happen. It's all related to how many cycles the gears see at that power level and when you consider that every straight-away on a road course is basically a 4th gear drag strip/dyno pull the number of cycles that 4th gear will see in a road race EVO add up quickly and lead to 4th gear finally letting go of its teeth.
Apr 25, 2008, 09:38 AM
#21
Newbie
Join Date: Dec 2003
Location: San Diego, CA
Posts: 12
Likes: 0
Received 0 Likes
on
0 Posts
If the deciding factor with regards to possibly having to spend $4k-$6k to replace the 6 speed transmission are the HID headlights, then I think your priorities are out of order. But on the same note, coming from an S2000, I couldn't stand the OEM halogens. I opted for the HIDExpert kit in my GSR, which boasts OEM kelvins with Philips bulbs and Denso projectors, which can both be found as OEM equipment on Lexus models.
Apr 25, 2008, 09:51 AM
#22
Evolved Member
iTrader: (12)
Join Date: Jul 2005
Location: Westchester, NY
Posts: 1,404
Likes: 0
Received 0 Likes
on
0 Posts
SRT-TO-EVO,
Please understand that road racing will take it's toll on the 6speed. While there will be those who can make impressive power through that 6 speed without immediate failure it will eventually happen. It's all related to how many cycles the gears see at that power level and when you consider that every straight-away on a road course is basically a 4th gear drag strip/dyno pull the number of cycles that 4th gear will see in a road race EVO add up quickly and lead to 4th gear finally letting go of its teeth.
Please understand that road racing will take it's toll on the 6speed. While there will be those who can make impressive power through that 6 speed without immediate failure it will eventually happen. It's all related to how many cycles the gears see at that power level and when you consider that every straight-away on a road course is basically a 4th gear drag strip/dyno pull the number of cycles that 4th gear will see in a road race EVO add up quickly and lead to 4th gear finally letting go of its teeth.
Edit: And no it's not about how many cycles " a gear sees at that power level" lol. I would hope nobody is trying to launch in 4th by sidestepping it! Let's not get too carried away here and stick to the facts. IT'S THE HEAT! Nothing else destroys 4th but heat, so to the OP, don't believe anyone who tells you otherwise, it happens because of this and that which means it's weak bs. And if you haven't gotten it by now YES road racing does cause EXCESSIVE heat build-up in the transmission, so play at your own risk.
Last edited by SRT-TO-EVO; Apr 25, 2008 at 01:59 PM.
Apr 26, 2008, 12:41 PM
#24
Evolved Member
iTrader: (12)
Join Date: Jul 2005
Location: Westchester, NY
Posts: 1,404
Likes: 0
Received 0 Likes
on
0 Posts
. Better yet please elaborate for all of us to see, instead of just talking. I can pull up a couple threads for you. Let's see what you've got.
Last edited by SRT-TO-EVO; Apr 26, 2008 at 12:48 PM.
Apr 26, 2008, 12:50 PM
#25
Evolved Member
iTrader: (12)
Join Date: Jul 2005
Location: Westchester, NY
Posts: 1,404
Likes: 0
Received 0 Likes
on
0 Posts
Here you go.............looks like you're the one with some learning to do buddy 
. Read up before speaking nonsense.
https://www.evolutionm.net/forums/sh...210221&page=52
. Read up before speaking nonsense.https://www.evolutionm.net/forums/sh...210221&page=52
Apr 26, 2008, 12:59 PM
#26
Oh.... ok I see, you're a thread reader. Reads it in a thread therefore it must be true.
So, you have no real evidence to back up what you are spouting other than reading threads that don't really have much support to your claims other than the car was being used for road racing when 4th gear failed. Nice and I suppose that you believe a oil cooler sitting in a beer cooler full of ice is going to save the day?
Have you personally had a 6 speed transmission apart? Do you know the shaft spacing? Have you had a burn off done of the gears to know the choice of steel they are using? Have you calculated how many Ksi the gear teeth will be exposed to in relation to the torque that is going into the transmission? Have you seen the less than ideal contact pattern that 4th gear has and know how to make the proper corrections? Can you answer any of these questions?
I suggest that you keep on reading those threads that pertain to the 6 speed before you go any further, you might just find that the problems are a little more than just some heat.
So, you have no real evidence to back up what you are spouting other than reading threads that don't really have much support to your claims other than the car was being used for road racing when 4th gear failed. Nice and I suppose that you believe a oil cooler sitting in a beer cooler full of ice is going to save the day?
Have you personally had a 6 speed transmission apart? Do you know the shaft spacing? Have you had a burn off done of the gears to know the choice of steel they are using? Have you calculated how many Ksi the gear teeth will be exposed to in relation to the torque that is going into the transmission? Have you seen the less than ideal contact pattern that 4th gear has and know how to make the proper corrections? Can you answer any of these questions?
I suggest that you keep on reading those threads that pertain to the 6 speed before you go any further, you might just find that the problems are a little more than just some heat.
Apr 26, 2008, 01:02 PM
#27
Evolved Member
iTrader: (12)
Join Date: Jul 2005
Location: Westchester, NY
Posts: 1,404
Likes: 0
Received 0 Likes
on
0 Posts
Oh.... ok I see, you're a thread reader. Reads it in a thread therefore it must be true.
So, you have no real evidence to back up what you are spouting other than reading threads that don't really have much support to your claims other than the car was being used for road racing when 4th gear failed. Nice and I suppose that you believe a oil cooler sitting in a beer cooler full of ice is going to save the day?
Have you personally had a 6 speed transmission apart? Do you know the shaft spacing? Have you had a burn off done of the gears to know the choice of steel they are using? Have you calculated how many Ksi the gear teeth will be exposed to in relation to the torque that is going into the transmission? Have you seen the less than ideal contact pattern that 4th gear has and know how to make the proper corrections? Can you answer any of these questions?
I suggest that you keep on reading those threads that pertain to the 6 speed before you go any further, you might just find that the problems are a little more than just some heat.
So, you have no real evidence to back up what you are spouting other than reading threads that don't really have much support to your claims other than the car was being used for road racing when 4th gear failed. Nice and I suppose that you believe a oil cooler sitting in a beer cooler full of ice is going to save the day?
Have you personally had a 6 speed transmission apart? Do you know the shaft spacing? Have you had a burn off done of the gears to know the choice of steel they are using? Have you calculated how many Ksi the gear teeth will be exposed to in relation to the torque that is going into the transmission? Have you seen the less than ideal contact pattern that 4th gear has and know how to make the proper corrections? Can you answer any of these questions?
I suggest that you keep on reading those threads that pertain to the 6 speed before you go any further, you might just find that the problems are a little more than just some heat.
