Since shep doesnt built his transmissions personally anymore, I feel as if the quality has gone down. It seems like they are trying to get the trans done as fast as possible. I recently replaced a trans in another built evo with a shep trans and this was the issue with 4th gear. I called around and got a quote from TRE and explained what was going on. He said that the 4th gear was not properly matched (filed and fitted) making the notchy feeling we were having. There has been a few negatives about their customer service as well when reading some of the forums.

TRE does take a little longer so you may have more down time but the end result is worth it. He did give me a deal since the trans was just rebuilt and it needed minor tweaking. It shifts like butter now and the car has around 10K since the build making 600hp.

I cant say the same for Jacks transmissions. I am currently running one of their transmissions in my car and dont have a single complaint. Ive made over 500whp with no grinding/shifting issues. Since their business has boomed, I dont know if the quality has suffered from it. I know I would send my trans back to TRE or jacks on my next rebuild.

Also, read the articles that Jacks transmissions has posted. Very informative and they say DO NOT run the shockproof oil. Run the MR 6 speed oil or MT90. There is enough information out there so that you do not repeat other peoples mistakes.

 

You said you had a QM?
If so what were your measurements for clearance between the TOB and Pressure Plate Teeth?

I know you said you had no drag, but that doesnt mean the clutch pedal or TOB/PT clearance is correct. The issue also could be within the transmission gears as mentioned before. Mistakes happen and yes that does suck. Hopefully they take care of you.

 

I had 3 Shep trans and now I have a jacks trans. I can tell you 100% jacks is better! It has shifted smoother and lasted longer than any of my Shep trannys hands down.

I also think sheps quality has went down hill in the last 5 years. Plus dealing with him is about like dealing with David Buschur. Lol not too good...

Jacks trans are super cool people, do the job right, good turn around time and takes care of the customer after the sell. I have been very pleased with them.

To the op, it doesn't sound like a clutch issue. Sounds like tranny problems.

 

At this point I don't know what to think. I called them today and they gave me a few tests to try with the shift linkage and what not... Could shifter cables cause a grinding issue??

 

I did a rough measurement and everything seemed ok but to be honest I found it hard to get an accurate reading... Everyone was saying that on a stock 2.0 crank you should not need shimming...

 

Yes Shifter Cables can cause grinding/shifting issues.
There isnt much to it if they are in the bracket and not obstructed.
People do say that QM clutches do not need shimming, but some say differently. There is always that one which may need shimming. Minimum clearance is .140 and maximum is .160. Those clearance thresholds are really small so error or rough measurements is not acceptable.

However, since you say you do not have any clutch drag issues. I would expect a slipping clutch before grinding if there is no clutch drag. I know it seems strange that the tranny may be bad after just being rebuilt, but it does happen.

Good luck and let us know what the outcome is.

 

I'm going to look at the linkage on Monday and see if I find anything. The tranny feels the same as it did before I sent it to shep which makes me think there may be something else wrong. One thing I noticed is that when you are sitting in the car with the clutch pushed in and shift it through the gears it's notchy going into second, third and very notchy going into 4th. One of the guys at shep said it should go through the gears smoothly.

 

Could be shift cables/shift selector mechanism. There is a little half moon block that can get knocked out of place and cause issues. However it would cause more lockout issues or going into 3rd when you're actually trying to putIit into 1st.

 

Ok I will take a look monday. The only reason I suspect the cables could be bad is because sometimes it will go into the gears smoothly and then other times it feels like its notchy and dragging out of gear. Thanks for your help.

 

So today I looked at all possibilities and had a few of my friends who are mechanics look at the car. We took the linkage/cables off to see if they were going into all gears and everything looked fine there. We checked the TOB through the check hole in the tranny and were able to see the TOB pretty much sitting on the clutch fingers. A few people mentioned shimming the TOB but it looks like as soon as the you start to push the clutch in the TOB starts to push the fingers and looks like the TOB gets more than enough travel so that doesn't seem to be the issue. At this point all fingers are pointing at the transmission. My one buddy drove it and said it doesn't feel like a grind but more like very rough engagement into almost all gears. When sitting at a stop with the car running and the clutch pushed in it goes through the gears but often has resistance going into 2nd and 4th gear. At this point it doesn't seem like anything but the transmission... Anyone have any other ideas??

 

Are you sure you have enough fluid?

 

If you mean fluid in the master then yes. As we bled the clutch and brakes I had a buddy topping it up. Im almost thinking its not a grind but extremely notchy shifting. It seems to be worse when driving than just sitting at a stop and shifting through the gears. The strange part is, i'm able to shift the tranny into every gear easily when shifting it by the linkage directly on the tranny...

 

if you take the cables off the transmission the shifter should flop around so easily with zero resistance. If it is tight at all you have something wrong either in the shifter itself or the cables.

 

There is an unbelievable amount of truth in this post haha.

That transmission was very notchy from day one. It had very few miles and very little abuse when I sold the car. TRE will be getting my business in the future.