Starter grinds on start
So I installed a new/used JWT light weight flywheel and exedy clutch/pressure plate a few weekends ago.. and it grinds randomly on start.... I push the clutch ALL THE WAY to the floor and still.. randomly grinds.
I did notice that the flywheel looked like the previous owner (prj3ctm4yh3m) had the same issue as it had a few grind marks...
My OEM clutch/flywheel never ground like this in almost 2 years... So i'm pretty sure it wasnt the starter.
I'm pretty sure there is no easy adjustment for this, as I dont see any spacers on the starter.. and it is tight as can be...
Ideas/thoughts...
Really dont want to buy another flywheel and have to go through that mess again...
I did notice that the flywheel looked like the previous owner (prj3ctm4yh3m) had the same issue as it had a few grind marks...
My OEM clutch/flywheel never ground like this in almost 2 years... So i'm pretty sure it wasnt the starter.
I'm pretty sure there is no easy adjustment for this, as I dont see any spacers on the starter.. and it is tight as can be...
Ideas/thoughts...
Really dont want to buy another flywheel and have to go through that mess again...
That's what i was afraid of...
I threw a breaker bar and a socket to turn the crank over slightly if it gets stuck at a ground down spot for now...
guess i get the joy of dropping the tranny again... glad I didnt pay nissan to do it the first time... Hopefully it can wait a month or two...
Should i stick with the JWT or go a different route?
I threw a breaker bar and a socket to turn the crank over slightly if it gets stuck at a ground down spot for now...
guess i get the joy of dropping the tranny again... glad I didnt pay nissan to do it the first time... Hopefully it can wait a month or two...
Should i stick with the JWT or go a different route?
So I installed a new/used JWT light weight flywheel and exedy clutch/pressure plate a few weekends ago.. and it grinds randomly on start.... I push the clutch ALL THE WAY to the floor and still.. randomly grinds.
I did notice that the flywheel looked like the previous owner (prj3ctm4yh3m) had the same issue as it had a few grind marks...
My OEM clutch/flywheel never ground like this in almost 2 years...
^one of the stupidest things I've read on this site
I did notice that the flywheel looked like the previous owner (prj3ctm4yh3m) had the same issue as it had a few grind marks...
My OEM clutch/flywheel never ground like this in almost 2 years...
^one of the stupidest things I've read on this site
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So I installed a new/used JWT light weight flywheel and exedy clutch/pressure plate a few weekends ago.. and it grinds randomly on start.... I push the clutch ALL THE WAY to the floor and still.. randomly grinds.
I did notice that the flywheel looked like the previous owner (prj3ctm4yh3m) had the same issue as it had a few grind marks...
My OEM clutch/flywheel never ground like this in almost 2 years...
^one of the stupidest things I've read on this site
I did notice that the flywheel looked like the previous owner (prj3ctm4yh3m) had the same issue as it had a few grind marks...
My OEM clutch/flywheel never ground like this in almost 2 years...
^one of the stupidest things I've read on this site
The position of the clutch pedal has nothing to do with the starter grinding. The starter grinds because the teeth on the flywheel and the teeth on the starter Bendix aren't meshing properly.
It could be a worn Bendix, bad starter bearings, etc, but those aren't likely if the starter was working properly before the flywheel change. The ring gear could be too small, not installed correctly, or off center. The flywheel itself could also be machined incorrectly, too.
Regardless of the cause, you're going to have to take the transmission off to see what's wrong. I hope you'll post some pictures when you do that.
It could be a worn Bendix, bad starter bearings, etc, but those aren't likely if the starter was working properly before the flywheel change. The ring gear could be too small, not installed correctly, or off center. The flywheel itself could also be machined incorrectly, too.
Regardless of the cause, you're going to have to take the transmission off to see what's wrong. I hope you'll post some pictures when you do that.
I'll purchase a new JWT or other light weight flywheel and do the install again, it only takes a few hours.
On a side note -
What caused this (besides it was previously ground by the former owner)?
I dont want a new one to have this happen by any fault of my own doing.
Is it possible there is something wrong with the actual clutch pack or pressure plate that I received that might cause the new flywheel the same fate?
Could the clutch and pressure plate have caused this flywheel issue for the previous owner, or did the previous owner just f the flywheel up a few times and that was all it took...?
I dont want to replace the clutch and pressure plate if I dont need to, but dont want to do this a third time either...
"Could the clutch and pressure plate have caused this flywheel issue ..."
No.
"....did the previous owner just f the flywheel up a few times and that was all it took...?"
Probably, but I cannot imagine what he could do to make it happen other than leave the starter loose or use a starter with a badly worn Bendix.
You can see the ring gear and where the starter mounts in this picture.

The pressure plate is mounted to the flywheel inside the ring gear. The starter comes in from the front. There's no way the starter parts can touch the clutch parts.
No.
"....did the previous owner just f the flywheel up a few times and that was all it took...?"
Probably, but I cannot imagine what he could do to make it happen other than leave the starter loose or use a starter with a badly worn Bendix.
You can see the ring gear and where the starter mounts in this picture.

The pressure plate is mounted to the flywheel inside the ring gear. The starter comes in from the front. There's no way the starter parts can touch the clutch parts.
Last edited by winchman; Jan 2, 2011 at 10:46 PM.
I would say yeah that the previous guy could of installed something wrong, f'd it up, took it out and then sold it to you. Back in the day they used to cut flywheels just like rotors, don't think they do that anymore, too much risk of failure.
"Could the clutch and pressure plate have caused this flywheel issue ..."
No.
"....did the previous owner just f the flywheel up a few times and that was all it took...?"
Probably, but I cannot imagine what he could do to make it happen other than leave the starter loose or use a starter with a badly worn Bendix.
You can see the ring gear and where the starter mounts in this picture.

The pressure plate is mounted to the flywheel inside the ring gear. The starter comes in from the front. There's no way the starter parts can touch the clutch parts.
No.
"....did the previous owner just f the flywheel up a few times and that was all it took...?"
Probably, but I cannot imagine what he could do to make it happen other than leave the starter loose or use a starter with a badly worn Bendix.
You can see the ring gear and where the starter mounts in this picture.

The pressure plate is mounted to the flywheel inside the ring gear. The starter comes in from the front. There's no way the starter parts can touch the clutch parts.
The crappy thing is the grind marks werent that bad at all... it looked like soemoen lightly fild down about 5-6 teeth on one section.. and it was just enought to take the corner off the teeth, not even all the way through the teeth... maybe that means the JWT in it's stock form isn't fully catching the bendix gear that pops out of the starter in the first place? however, i couldnt find any other posts of people having this issue with teh JWT so.. probably not the case.
I'll just purchase a new flywheel and install it again, once my old exhaust sells... a week or two...
Any way to possibly fix this one, so it can be used by another person? i did send an email to JWT seeing if it's something they can fix, even at a cost, as it'd be nice to recoup some of the cash for this used flywheel, or sell it as is (cheap) knowing the next person can fix it (I would tell them of course as I'm not a complete scumbag).

Kinda hard to screw up a starter on the Z.. it only goes one way, and you dont shim it (not that i've seen).
i have this problem aswell, it doesnt happen very often though. I bought a spec twin disk brand new. the second time i tried to start it, it grinded and does it randomly. it never did it before the new clutch and flywheel. ive checked the starter several times to make sure it was tight.
They probably use a ring gear from an OEM flywheel on the aftermarket part. You might find a trashed flywheel with a good ring gear, and just switch them. It would involve some grinding and welding, but nothing a good shop couldn't do.
The tricky part would be checking the balance after the welding was done. Making all the welds alike in length, bead size, and spacing would probably be good enough, though.
The tricky part would be checking the balance after the welding was done. Making all the welds alike in length, bead size, and spacing would probably be good enough, though.
It may be a good idea to replace your starter when you get the new flywheel. If the starter has had many episodes of grinding, the teeth may have lost their profile, and that may lead to problems with the new flywheel.








