Hi, I have installed a brand new T5-Z spec in my Plus 8 Morgan (240 hp). Everything was Ok and quiet for the first 75 miles. When I took it out the next time as soon as I put it in 5th gear and put it under load, this loud rattling noise came from the gearbox. The other four gears are quiet. The shifter also jerks back (1/8" at the top of the 6" lever) quite violently but a few seconds after the noise starts. The noise is a loud whirring and sounds like someone gargling. Oil level is correct and ATF. The box is out of the car and all looks ok inside. Any suggestions as to the cause please?
T5- Z spec 5th gear problem
- Thread starter ndy846
- Start date
The snap ring on the countershaft may have popped loose...
You will have to pull the tailshaft housing off to fix it. In order to get the tailshaft off, you have to remove the shifter and the roll pin that secures the shifter rails. That means removing the trans from the car unless you have magic hands...
See TTC: Product Literature to download a FREE service manual for T5 or Tremec 3550/TKO
You will need the Adobe Acrobat viewer which is also a free download – Adobe - Adobe Reader download - All versions
See Hanlon Motorsports - T5 and Tremec parts, sales and service or Welcome to D&D Performance - The 5 & 6 Speed Experts! for parts
You will have to pull the tailshaft housing off to fix it. In order to get the tailshaft off, you have to remove the shifter and the roll pin that secures the shifter rails. That means removing the trans from the car unless you have magic hands...
See TTC: Product Literature to download a FREE service manual for T5 or Tremec 3550/TKO
You will need the Adobe Acrobat viewer which is also a free download – Adobe - Adobe Reader download - All versions
See Hanlon Motorsports - T5 and Tremec parts, sales and service or Welcome to D&D Performance - The 5 & 6 Speed Experts! for parts
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Thanks for your reply. I'm in the UK so expect a big time difference in the responses.
I thought it might be the snap ring but I checked that and it is still in place. Everything looks ok both inside the tail housing and the box itself. The 5th gear assembly seems very sloppy though and something on there must be kicking back to make the shift lever jerk back (as described in my post above).
With the syncro assembly engaged in 5th, I cannot understand what is causing the loud whirring noise.
Hi, this is an old thread, but I will try. I have installed a T5 on my Plus 8. As you, all was quiet for a bit. Then, during a slightly longer trip, there was a bang coming from the gearbox and after that, load rattling under load in 5th. Tremec replaced the box. I am just back from the fist longer trip. No bang, but after about 200 milks, there is a distinct rattling in 5th under load. Not as strong as the first time, but enough that we drove back in 4th. Did you ever get your problem fixed?
This 'member' has not been back since 2010?
Have you communicated with Tremec about this new issue?
Not yet. Being in Portugal, I have to wait until office hours in Michigan. But I was also fishing for other people with Morgan +8s who have been down that road. Or other after-market fitters who may have experienced the same.
Does the transmission shift in and out of 5th with relative ease? Does it rattle at any rpm under load? I am not sure about the bang you heard but I did some searching and ran across a post by SPeace-ATL over on ffcars.com here:
I would venture to say that he has rebuilt hundreds if not a couple thousand T5's and he helped me with an issue I was having on one of my T5's. Told me what he thought was wrong and absolutely nailed it.
I would venture to say that he has rebuilt hundreds if not a couple thousand T5's and he helped me with an issue I was having on one of my T5's. Told me what he thought was wrong and absolutely nailed it.
Thanks. The shifting is smooth, no problems. The rattle seems pervasive across the rpm range. And the rattle is regular. As if it is related to the rotation of the some spinning piece. Thanks for the link.
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