Tr3650 TSB Rebuild? Anyone whos had it done please look

Burtonsnow157 · 02-09-2008, 03:49 PM

I did a search and didnt really come up with anything that I'm specifically trying to find out so maybe you guys can help me. I have a tr3650 that exhibits the troubles described in the TSB 4-15-06 which is clash during the first to second gear shift. This happens when cold and usually goes away after 10 minutes but is still annoying.

First question is, is it worth it to go through the trouble and have it fixed? I know that my 2nd gear synchro probably isn't too good and my forks could stand to be a little beefier but some people say dont bother. I want to get a tri-ax but i want to put it on my tranny once its 100% not now with pending repair, so its holding me up with that also.

Secondly is, how long did it take from the time they diagnosed the problem and then when you got it back? Reason I ask is because I dont have a second car to drive and i need to get to school and work.

Third is, I went to the service department one time and told the guy it only happens in the morning when cold, but it hasn't been too cold around here lately. I cancelled my appointment because it was 60degrees that week (dec20th) When I told him about the tsb he seemed like he knew nothing about it. So if they insist that my transmission is fine what should I do, because it isn't.

Any other tips are appreciated

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Ryan86272 · 02-09-2008, 08:07 PM

im sorry i didnt read anything u wrote... BUT no its not worth Fixing... I have rebuilt mine twice.... and finally went with a TKO (Wich is Grinding 3rd now[:@], only during racing) BUt u can ask quicktime also and im sure more i dont think its worth fixing.. id try and rake up the extra cash and get a good Tranny...

Burtonsnow157 · 02-09-2008, 08:57 PM

oh, my bad, i forgot to mention im still under factory warranty for about another year

Chubstang · 02-09-2008, 10:19 PM

do all 3650's have this problem? Mine does the same thing for the first few minutes of driving.

Burtonsnow157 · 02-09-2008, 11:32 PM

im pretty sure most or almost all of them do. ive read that its because the teeth on the sychros are too fine and they dont mesh well

ninelives19821 · 02-09-2008, 11:56 PM

mine does the same going from first to second.. seems like it's normal i wouldnt worry to much about it. mabey if it starts making some strange noises or popping out of gear then i would get worried

BADSEED · 02-10-2008, 12:28 AM

i got a great idea take the tranny and throw it away and go find a t-45

OzzDOA · 02-10-2008, 08:28 AM

Almost all tr-3650's do it. I would recommend changing the tranny fluid. Putting in 3.2 quarts of Dexron III/Mercon or Dexron V will smoothe out the shifts quite a bit. Do not put in a synthetic trans fluid. Synthetics willsoften and pityour synchros over time reducing their service life.

cliffyk · 02-10-2008, 08:59 AM

My '03 GT does not do this, however when I got it in December of '06 at 30k miles one of the first things I did was change the tranny fluid to 3.2 qts of RP Synchromax (at the recommendation of one of the top Mustang shops in Daytona). [/align][/align]With the OEM fluid (I drained 3.7 qts) there was a reluctance going from 2nd to 3rd, that went away with the reduced level and maybe the RP juice. In any event, I now have 66k miles and absolutely no shifting issues of any kind...[/align]