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C4 HELP! Bad Day at the Track

5K views 28 replies 10 participants last post by  Just Jim 
#1 ·
With all the excellent info available on this Forum on building a C4 maybe someone can help me out.My Morris early ('67)C4 has a false "neutral" on the 1-2 shift while racing. I leave in 1st and shift to 2nd @6000RPM and it goes into this false neutral and the motor revs to the moon because of no rev limiter.When I let off the gas and it slows down,2nd gear comes back and I can manually shift to high.It shifts manually 1-2-3 in the burnout box and when driving slow. In drive when driven slow it shifts 1-2-3. I tried leaving it in Drive at the track and it took off good in 1st and then instead of shifting to 2nd it hit this false neutral again so I let off and it went into 2nd and then 3rd.Instead of calling it a day I tried racing it by starting in 2nd and it acts like it starts in 2nd,momentarily goes into first,back to second and then can be manually shifted into third.The trans has a Transgo shift kit and H servo.I have put in a new shift cable and cleaned the manual valve in the valve body along with a new detent plunger and spring.Nothing seems to fix it.The problem has progressively gotten worse over the last few times out at the track.Sorry for the long post,but I 'm trying to give enough info for someone to help me out. Thanks.
 
#27 ·
Anytime Jim. Another thing you may want to watch, in the way of pressures, is if you have a full manual valvebody with a reverse pattern, the pressure for ALL gears should be a steady 140-160 lbs.The thing I'm shooting at is making sure it is the tranny as you say you are gettign another, just don't want to see you grow any grey hair!
 
#28 ·
Blown 54,what do you mean growing grey hair? It should be growing MORE gray hair.Hah.

I pulled the car off the trailer yesterday and it went in reverse fine,but it slipped so bad in any forward gear that I barely got it into the garage. Must have fried the direct clutch at the races with those 2nd gear starts. I pulled the motor to get to the trans and also got the trans out,which comes out the top not the bottom as a normal car. The fluid is smelly and dark maroon color not red.I'll pull it apart soon but want to build up the new trans first.The saga continues.
 
#29 ·
I pulled the trans out and tore it down. 4 of the forward clutch frictions had all of the lining burned off and the 5th one had very little lining. The reverse/high frictions looked OK but showed signs of slipping. The intermediate band was burnt/fried and glazed up.All of the seals looked good as did the internals of the pump.I guess I'll never know what caused the problem.
I went thru my "new"1968 C4 with Red Eagle frictions/Kolene steels, new bands,thrust washers/bushings as required,seals,gaskets and an "H" servo.I set both clutches with .025-.030 clearance and the input shaft free play to .020. It should be all back together and running in a few weeks.I sure hope the new trans works better than the old one.I'm not too fond of the "pink shirt syndrome" from all the trans fluid.
 
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