Can you reinforce a 6speed MR Tranny?
I know Jacks Transmissions came out with a 3rd-5th gear set for the evo 8/9 MRs not sure who has used them yet but here's the link:
http://www.jackstransmissions.com/co...set-evo-8-9-mr
http://www.jackstransmissions.com/co...set-evo-8-9-mr
Shep no longer has exclusivity. That's the same upgrade!
I have only drove it about 800 miles since september 2014.
300 of the miles were all highway.
I do like my cruising RPM with the longer gearing. The trans is noisier (which I like) partially I'm sure this is because I also did a limited slip upgrade at the same time.
It shifts better so far and I haven't had problems but it hasn't had lots of testing. I'm really glad I stretched out the final drive because now when I use e85 I have gobs of torque and the rpm climbs really fast. (I can't imaging how fast it would fly through the rpm with the original final drive - too much time shifting)
300 of the miles were all highway.
I do like my cruising RPM with the longer gearing. The trans is noisier (which I like) partially I'm sure this is because I also did a limited slip upgrade at the same time.
It shifts better so far and I haven't had problems but it hasn't had lots of testing. I'm really glad I stretched out the final drive because now when I use e85 I have gobs of torque and the rpm climbs really fast. (I can't imaging how fast it would fly through the rpm with the original final drive - too much time shifting)
This was a debate back when we used to turbo our Hondas. People would run taller gears because "it stays in boost longer". Yeah, because they were accelerating slower.
They swore their cars were faster, but that made no sense, as their track times showed.
Do you feel the slower acceleration outweighs the time spent shifting?
They swore their cars were faster, but that made no sense, as their track times showed.
Do you feel the slower acceleration outweighs the time spent shifting?
I hope my 2.3 can take advantage of all this.
Physics say all things being equal, the shorter gear will move the car faster.
You're thinking taller gear = more load = more power = faster?
All I know is we all ran b16 and Type R transmissions because they had the shortest gearing and were faster. Maybe high HP/low torque made it necessary? This was with 550whp or so and prob 350ish tq on a 2.0L.
They're must be a point where it makes a difference otherwise Top Fuel dragsters would run 10spds LOL
When I had this trans built I also went from a stock 2.0 to a heavily built 2.3, and went e85. It takes off like a rocket. Going from 4 to 8 thousand rpm is crazy quick. The car literally scares me. I can't go wide open in gears less than 4th. I try but my foot just comes off.
Newbie
Joined: Feb 2014
Posts: 41
Likes: 0
From: Ohio
AFAIK, Shep is making them again. He definitely ran a second production run, because I literally bought the last set he had from the first. With a higher FD, 6th is a cruising gear and I am pretty sure you wouldn't use anything higher than 5th on a track. 6 speed is still much smoother shifting than the 5. For a serious track set-up, the 6th still might be heat-limited...but a cooler can help.
Not sure how much lighter the 5 speed is, but don't forget to factor in that extra .7 liters of fluid the 5 speed uses
Here's a used Shep 6 speed for sale in SoCal:
https://www.facebook.com/photo.php?f...type=1&theater
Not sure how much lighter the 5 speed is, but don't forget to factor in that extra .7 liters of fluid the 5 speed uses
Here's a used Shep 6 speed for sale in SoCal:
https://www.facebook.com/photo.php?f...type=1&theater
Good point about the smoother shifting! Didn't know that as I have never driven a 5-spd. Good thing to consider.
The 6-spd I would think would be nice partially because you would have more gears to select from, so you could put the engine in the right place to build boost and get maximum power to the ground out of the corner with more gears to select from. That could be a huge benefit. However the 5-spd means less shifts, which is less distracting, and a manual shifts slow compared to some other systems out there like dual-clutch, etc... Blah, blah, blah. There are certainly advantages to the 6-spd (hell, I have the gearset upgrade, so I am clearly sold on it, but my car is also primarily street driven). I am not sure about the weights. I currently have a spare 6 spd laying around. Maybe I will figure out how to weigh it and report back at some point. It is a heavy bish though. I have a hard time moving it by myself. I would say it is somewhere around 130-150 lb, but honestly that is a total guess. Never held a 5 spd so I wouldn't know about that but based on other threads it is a bit lighter. How much difference does that make on a 3200 lb car? Depends. For most of us who don't race in GP2, probably not a whole lot tbh.
When I had this trans built I also went from a stock 2.0 to a heavily built 2.3, and went e85. It takes off like a rocket. Going from 4 to 8 thousand rpm is crazy quick. The car literally scares me. I can't go wide open in gears less than 4th. I try but my foot just comes off.
Good point about the smoother shifting! Didn't know that as I have never driven a 5-spd. Good thing to consider.
The 6-spd I would think would be nice partially because you would have more gears to select from, so you could put the engine in the right place to build boost and get maximum power to the ground out of the corner with more gears to select from. That could be a huge benefit. However the 5-spd means less shifts, which is less distracting, and a manual shifts slow compared to some other systems out there like dual-clutch, etc... Blah, blah, blah. There are certainly advantages to the 6-spd (hell, I have the gearset upgrade, so I am clearly sold on it, but my car is also primarily street driven). I am not sure about the weights. I currently have a spare 6 spd laying around. Maybe I will figure out how to weigh it and report back at some point. It is a heavy bish though. I have a hard time moving it by myself. I would say it is somewhere around 130-150 lb, but honestly that is a total guess. Never held a 5 spd so I wouldn't know about that but based on other threads it is a bit lighter. How much difference does that make on a 3200 lb car? Depends. For most of us who don't race in GP2, probably not a whole lot tbh.
The 6-spd I would think would be nice partially because you would have more gears to select from, so you could put the engine in the right place to build boost and get maximum power to the ground out of the corner with more gears to select from. That could be a huge benefit. However the 5-spd means less shifts, which is less distracting, and a manual shifts slow compared to some other systems out there like dual-clutch, etc... Blah, blah, blah. There are certainly advantages to the 6-spd (hell, I have the gearset upgrade, so I am clearly sold on it, but my car is also primarily street driven). I am not sure about the weights. I currently have a spare 6 spd laying around. Maybe I will figure out how to weigh it and report back at some point. It is a heavy bish though. I have a hard time moving it by myself. I would say it is somewhere around 130-150 lb, but honestly that is a total guess. Never held a 5 spd so I wouldn't know about that but based on other threads it is a bit lighter. How much difference does that make on a 3200 lb car? Depends. For most of us who don't race in GP2, probably not a whole lot tbh.
Newbie
Joined: Jan 2013
Posts: 8
Likes: 0
From: Easton
Hey man, I saw you were located in PA. Im also located in PA and when I was Building mine I was gonna send mine out to Shepherd Trans out in Ohio which isn't too far from me. I Emailed him and we were talking about what my goals were and what the best options were for me. He's a really cool guy and he knows his stuff. Ive heard nothing but good things about his builds. I highly recommend him.
sheptrans.com
Good luck with build bro
sheptrans.com
Good luck with build bro
Just to clarify, it was known Shep was dealing with a vendor in Australia for the original 3, 4 and 5 gearset, but no one knew who. Now that Jack's has the "Albins" upgrade, we know it's the same upgrade.
Jack's doesn't seem to have the FD upgrade, though.
Jack's doesn't seem to have the FD upgrade, though.
Evolving Member
Joined: Oct 2007
Posts: 491
Likes: 8
From: Charleston, WV
I just got off the phone with Shep and he said they are no longer building the 6 speed. He said they started back for just a little bit but now aren't building them again and doesn't see them starting back.