|
T5 grinding over bumps????
Just a few days ago my T5 started grinding when i hit big bumps, or when i brake really hard...it's the same grinding as you would hear if you were to miss a shift...
The tranny is freshly rebuilt with only about 200 miles on it, and a brand new centreforce dual friction with the same mileage... can anyone shed some light on this??? thanks! |
How close to the hole in the floor is the shifter? Maybe some flex causing it to try and push it out of gear?? Linkage clearance on the frame?? Maybe some new motor or trans mounts are needed but I would check the hole in the floor first.
|
If it isn't jumping out of the gear it's in, It may be the reverse idler gear attempting to slide into mesh. This could happen if the spring that holds it out of mesh were not fastened at the front of the case( for an older box) or at the anchor post( for a newer box). If it is grinding because it is being pulled from gear, check the crossmember mounting for proper fastener torque/installation.
|
i think i've figured it out...
turns out it isn't the tranny, (i don't think)...i'm pretty sure that it's coming from the driveshaft and the fact that it's about a 1/4 inch too short so the U joints are binding on one another...i took it out and intentionally missed a few shifts inbetween breaking heavily and it's definitely a different sound... also, if i have the car up on stands, the angle of the driveshaft becomes too great for the wheels to turn, so once again that leads me to believe this is the problem... |
I had the same problem. Easy fix it to adjust the rear ride height a bit higher. The springs may has "saged" a bit. Other fix not as simple is to put a few washers between the
rear trans mount and trans. Jay B |
wouldn't those 2 things increase the angle of the driveshaft thus making the problem worse?...i'm thinking that if I were to do those adjustments, they would have to go the other way...ie ride height down (which i don't have room for)...or to somehow bring the tranny lower to the mount?...
i'm low on sleep so my thinking could very well be off on that though...:o |
Well, I guess it can go either way. My guess is that if it is a new situation, then the springs have saged a bit causing the angle to change, so raising the ridehight would compensate for the droop.
Of course if it is the other way it will be a bit harder. But if you don't have one of those angle measuring gadgets, try raising if first see if it works. But since you say with the frame up and the axle hanging the wheels won't turn at all the problem is on the down side, correctable by raising the height. Hell easy to check out, worth a try. Jay Bar |
Thinking it over again, with the frame up and the axle hanging would simulate raising the ride hight. And since you say the universal bindswhen you do that, maybe raising the ride height would not help.
Best check the angle of the drive shaft with the wheels on the ground. |
gotta remember that the rear torques upward when under a load. That's why you always set you pinion angle slightly downward with the car on its suspension
|
does the rear torque upward when under a forward load, or a reverse load?
if i launch hard i don't get the problem, so i'm guessing it also torques down on braking...which would explain the grinding would it not?... JayBar: I will try adjusting the ride height some more this week...i'm keeping my fingers crossed! thanks all so far! |
| All times are GMT -7. The time now is 07:20 AM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: