5th Gear grind after maintenance

Spartan 1771 · 09-10-2019, 09:53 AM

Quote:

Originally Posted by Rusty

For some reason. They don't hold the adjustment, and can be a bitch to bleed. Think Jar went through a couple of them. The CMAK is a better option. That's the one I would go with.

I won the CSM Elim kit at the 2017 Z Nationals, so I figured I would just stick with it, but I wasn't aware of any issues. Thanks for the info. I'll have ot look it to it a little more.

JARblue · 09-10-2019, 11:30 AM

I was an early adopter of the Z1 CSCEK. I went through 4 cylinders in about 50K miles. Had external plastic shell leak as well as internal seals leak. Z1 only replaced the first one at their expense. The last three I paid for out of pocket. I purchased the ZSpeed CMAK a few months back to replace it.

Joe@ZSpeed · 09-12-2019, 12:42 PM

This can be clutch related, Do you have issues getting into any other gears? 1st/Reverse?
Is you shiter hard to move into gear sitting still?

JWT disk is sorta heavy which adds centrifugal weight to the disk, which in turn leads to the syncros having a harder time slowing down to shift.

USMCram · 09-12-2019, 09:24 PM

Quote:

Originally Posted by Joe@ZSpeed

This can be clutch related, Do you have issues getting into any other gears? 1st/Reverse?
Is you shiter hard to move into gear sitting still?

JWT disk is sorta heavy which adds centrifugal weight to the disk, which in turn leads to the syncros having a harder time slowing down to shift.

Yea, actually I do have issues getting into reverse sometimes

Joe@ZSpeed · 09-13-2019, 08:51 AM

Quote:

Originally Posted by USMCram

Yea, actually I do have issues getting into reverse sometimes

Do you have to force the shifter into 1st gear sitting still? Does it grind going to reverse?

USMCram · 09-13-2019, 09:17 PM

Quote:

Originally Posted by Joe@ZSpeed

Do you have to force the shifter into 1st gear sitting still? Does it grind going to reverse?

Have had to force into reverse a couple of times. Never any grinding though.
Have had an issue going into 1st maybe once. Didn't try to force it in, just went into a couple of other gears first, and it went in just fine after that.

JARblue · 09-13-2019, 09:31 PM

If you have to force it... that's a bad sign. Check the guide plate. Super easy to do. And super easy for a shop to screw up. Best of luck

SteveSAS · 10-02-2019, 01:17 AM

They may have replaced gear box oil to a different viscosity.

Changing gear box oil is usually done when clutch is replaced.

Joe@ZSpeed · 10-02-2019, 11:51 AM

On the JWT clutch you need to ensure that the fingers of the pressure plate are not hitting the center of the clutch disk at full stroke (pedal on floor) I have seen quite few of the JWT have interference issues when new. If the pressure plate fingers hit the disk when you have the pedal to the floor it can cause shifting issues and cause gear grinds.

You can normally tell this is happening at idle as well, if you push the pedal all the way to floor you can normally hear it scrape a little and can also cause it to be hard to get into gear. if you let up a little it will go right into gear.

USMCram · 10-06-2019, 09:39 PM

Quote:

Originally Posted by Joe@ZSpeed

On the JWT clutch you need to ensure that the fingers of the pressure plate are not hitting the center of the clutch disk at full stroke (pedal on floor) I have seen quite few of the JWT have interference issues when new. If the pressure plate fingers hit the disk when you have the pedal to the floor it can cause shifting issues and cause gear grinds.

You can normally tell this is happening at idle as well, if you push the pedal all the way to floor you can normally hear it scrape a little and can also cause it to be hard to get into gear. if you let up a little it will go right into gear.

Thanks for the info, Joe. I'll try and check it out tomorrow and see what the issue is. I really appreciate your input.

beauz · 10-23-2019, 07:54 PM

Hey joe,

This finger contact to the clutch disc is what you mean about clutch overstroke im guessing? I emailed you yesterday about a similar symptom. Mine also can be hard to get into first/reverse at a stop, i can remedy this by shifting into 2nd then back into first.

Beau

Joe@ZSpeed · 10-24-2019, 09:50 AM

Quote:

Originally Posted by beauz

Hey joe,

This finger contact to the clutch disc is what you mean about clutch overstroke im guessing? I emailed you yesterday about a similar symptom. Mine also can be hard to get into first/reverse at a stop, i can remedy this by shifting into 2nd then back into first.

Beau

Your issue sounds more like a disk is not sliding smoothly on the input shaft upon release or there is possibly some material transfer from one of disk, Could also be a trans issue causing that. The overstroke could happen with the OS giken if you do not have a pedal stop and the fingers may hit the top disk. Most twins triples will require a pedal stop to prevent this.
They way to set up a twin is to find the point at which the clutch is fully released on the down stroke, at this point make a pedal stop that will limit any further travel so you do not over stroke it.

09-10-2019, 11:30 AM	#17 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	I was an early adopter of the Z1 CSCEK. I went through 4 cylinders in about 50K miles. Had external plastic shell leak as well as internal seals leak. Z1 only replaced the first one at their expense. The last three I paid for out of pocket. I purchased the ZSpeed CMAK a few months back to replace it. Spartan 1771 and Rusty like this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

09-12-2019, 12:42 PM	#18 (permalink)
Joe@ZSpeed A True Z Fanatic Join Date: Mar 2011 Location: Ohio Posts: 1,304 Drives: Nissan Rep Power: 342999	This can be clutch related, Do you have issues getting into any other gears? 1st/Reverse? Is you shiter hard to move into gear sitting still? JWT disk is sorta heavy which adds centrifugal weight to the disk, which in turn leads to the syncros having a harder time slowing down to shift. Spartan 1771 and Rusty like this. __________________ http://photos.zspeedperformance.com/...ardsize=468x60 Phone *937-506-7224* E-Mail Sales@Zspeed.com www.ZSPEED.com

09-13-2019, 09:31 PM	#22 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	If you have to force it... that's a bad sign. Check the guide plate. Super easy to do. And super easy for a shop to screw up. Best of luck __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

10-02-2019, 11:51 AM	#24 (permalink)
Joe@ZSpeed A True Z Fanatic Join Date: Mar 2011 Location: Ohio Posts: 1,304 Drives: Nissan Rep Power: 342999	On the JWT clutch you need to ensure that the fingers of the pressure plate are not hitting the center of the clutch disk at full stroke (pedal on floor) I have seen quite few of the JWT have interference issues when new. If the pressure plate fingers hit the disk when you have the pedal to the floor it can cause shifting issues and cause gear grinds. You can normally tell this is happening at idle as well, if you push the pedal all the way to floor you can normally hear it scrape a little and can also cause it to be hard to get into gear. if you let up a little it will go right into gear. USMCram and Asus_ like this. __________________ http://photos.zspeedperformance.com/...ardsize=468x60 Phone *937-506-7224* E-Mail Sales@Zspeed.com www.ZSPEED.com

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10-02-2019, 01:17 AM	#23 (permalink)
SteveSAS Base Member Join Date: Jun 2018 Location: Australia Posts: 61 Drives: 370z Rep Power: 5364	They may have replaced gear box oil to a different viscosity. Changing gear box oil is usually done when clutch is replaced.

10-23-2019, 07:54 PM	#26 (permalink)
beauz Base Member Join Date: Apr 2012 Location: australia Posts: 58 Drives: 09 370Z bs m6 Rep Power: 13	Hey joe, This finger contact to the clutch disc is what you mean about clutch overstroke im guessing? I emailed you yesterday about a similar symptom. Mine also can be hard to get into first/reverse at a stop, i can remedy this by shifting into 2nd then back into first. Beau