Gearbox back from rebuild, hmmmm.........
Posted: Wed Apr 05, 2017 10:02 am
Hi guys
I got the 4 back from MRC on Friday (other half drove it back and has been driving it this week, I have only driven about 15 miles in it since) after having the gearbox rebuilt over the fact that I didn't like how 2nd and 3rd engaged a lot of the time, especially when "making progress". 3rd normally felt the worst, not crunching when going in to gear, but felt notchy through the gearstick I suppose if you follow. I explained that the box basically felt like a bit of a bag of crap in general but the higher gears seemed ok as far as I knew.
I would also experience with increasing frequency, a scenario where I would be going at speed from 2nd to third to fourth, clutch fully down, not punching the gears in, where when trying to go from 3rd to 4th, it didn't want to do that an would do its bloody damndest to go in to second, which is always nice, luckily I never fully engaged the clutch back on any occasion where I found myself in 2nd....
Explained that 2nd and 3rd were the main issues but to have a look at everything when the box was cracked open and replace as necessary/advise if any mega expensive bits were found wrong. Gearbox work is farmed out to a 3rd party, so I can't fault MRC workmanship on this to be clear. After stating what I felt in my non-mechanical simple mind was particularly wrong with the box, the gearbox guy asked them to ask me again, as if he couldn't see for himself from inside the box, as the expert?
For clarification, this is exactly what I had done for the job -
New Flywheel
New Clutch
New Master Clutch Cylinder
New Slave Clutch Cylinder
New "Robnic" Clutch Pipe
6x new Clutch Bolts
10x new Flywheel bolts
New 2nd Gear
New 3rd Gear
2x New Synchro rings
2x New Synchro hubs
2x New Seals
New Sleeve
New Drive Flange Seal
4x Gearbox Oil
Jules drove the car back down the M40/M25/M3 and wasn't wowed at all, actually stating that while it felt ok, she had problem gearing down in to 2nd at one point when cruising down a slip road, and gearing down accordingly while slowing, taking over a second or two for her to get it to take 2nd. She is a gentle driver and isn't great at explaining things, but that is what she said. Clutch/flywheel engagement etc feels absolutely lovely at least.
I took it out for a 15-20 min spin and found that full clutch down gear changing (not like I would anything but that ever) from 1st to 2nd, then 2nd to 3rd in particular, didn't feel much different to before, not smooth like 4th/5th/6th that just slip in, these still feel that they sort of "pop" in.
Sorry for the "We enjoyed your little story!" length of this post, I just honestly don't know if the box is supposed to feel like that, especially after forking out to have it rebuilt specifically due to this and it made sense while having the clutch/flywheel etc done.
Obviously this will be totally subjective, but how do your gearboxes feel? My old girl is on 90k miles if it helps.
Thanks,
Nick.
I got the 4 back from MRC on Friday (other half drove it back and has been driving it this week, I have only driven about 15 miles in it since) after having the gearbox rebuilt over the fact that I didn't like how 2nd and 3rd engaged a lot of the time, especially when "making progress". 3rd normally felt the worst, not crunching when going in to gear, but felt notchy through the gearstick I suppose if you follow. I explained that the box basically felt like a bit of a bag of crap in general but the higher gears seemed ok as far as I knew.
I would also experience with increasing frequency, a scenario where I would be going at speed from 2nd to third to fourth, clutch fully down, not punching the gears in, where when trying to go from 3rd to 4th, it didn't want to do that an would do its bloody damndest to go in to second, which is always nice, luckily I never fully engaged the clutch back on any occasion where I found myself in 2nd....
Explained that 2nd and 3rd were the main issues but to have a look at everything when the box was cracked open and replace as necessary/advise if any mega expensive bits were found wrong. Gearbox work is farmed out to a 3rd party, so I can't fault MRC workmanship on this to be clear. After stating what I felt in my non-mechanical simple mind was particularly wrong with the box, the gearbox guy asked them to ask me again, as if he couldn't see for himself from inside the box, as the expert?
For clarification, this is exactly what I had done for the job -
New Flywheel
New Clutch
New Master Clutch Cylinder
New Slave Clutch Cylinder
New "Robnic" Clutch Pipe
6x new Clutch Bolts
10x new Flywheel bolts
New 2nd Gear
New 3rd Gear
2x New Synchro rings
2x New Synchro hubs
2x New Seals
New Sleeve
New Drive Flange Seal
4x Gearbox Oil
Jules drove the car back down the M40/M25/M3 and wasn't wowed at all, actually stating that while it felt ok, she had problem gearing down in to 2nd at one point when cruising down a slip road, and gearing down accordingly while slowing, taking over a second or two for her to get it to take 2nd. She is a gentle driver and isn't great at explaining things, but that is what she said. Clutch/flywheel engagement etc feels absolutely lovely at least.
I took it out for a 15-20 min spin and found that full clutch down gear changing (not like I would anything but that ever) from 1st to 2nd, then 2nd to 3rd in particular, didn't feel much different to before, not smooth like 4th/5th/6th that just slip in, these still feel that they sort of "pop" in.
Sorry for the "We enjoyed your little story!" length of this post, I just honestly don't know if the box is supposed to feel like that, especially after forking out to have it rebuilt specifically due to this and it made sense while having the clutch/flywheel etc done.
Obviously this will be totally subjective, but how do your gearboxes feel? My old girl is on 90k miles if it helps.
Thanks,
Nick.