ShockL1ne

Hey,

Just joined the forum so little introduciton, just boosted my '91 NA with your "standard" td04, rx8 injectors etc. setup.
Build is completed and I did a test drive, nothing leaked so that's good but I noticed 2 strange things with the clutch.

1. The clutch grabs right at the bottom of the pedal, when I lift my foot up the slightest it grabs and rolls.. With my OEM clutch it was around half way where it's supposed to be.
2. Shifting is really hard/stiff, before it was butter smooth and went in all gears no problem, now I really have to force it in there, like really force it.. I filled up the separate part where the shifter goes with oil too.

Btw, using a 1.8 flywheels since my 1.6 won't work.
Any of you know how I can fix this? I might've missed something you guys probably know. According to the description it should be close to OEM.. This doesn't feel even close.

Thinks that's about it.. If you have any questions, let me know!

der_vierte

https://www.miata.net/garage/adjust_clutch/index.html
this may help!

FM also got a PDF for their clutch where this is covered...

ShockL1ne

Thanks alot, def gonna try that out. Anything you can think of regarding the heavy shifting?

borka

iTrader: (1)

clutch is not disengaging fully, making for hard shifts.
adjust it properly and all will be well.

ShockL1ne

borka

iTrader: (1)

changing fluid and slave cylinder is good. but you need to have the clutch pedal adjusted so it releases the clutch fully once the pedal is at the floor, which right now it sounds like its not releasing the clutch fully, making for hard shifts.

HmoobDude

If you're also going to do that, I suggest you replace the OEM "squirly" clutch line that goes from the hard line on the firewall to the slave. Makes it much easier to bleed then trying to get all the air out of the curled up OEM line.

ShockL1ne

Thanks for the tip! But going after the fluids should help with disengaging problem? Or how can I adjust the engaging the best?

borka

iTrader: (1)

i would troubleshoot in the following steps:

1. new fluid and a good bleeding to get all air out
if this did not help
2. https://www.miata.net/garage/adjust_clutch/index.html
if did not help
3. new slave cylinder and braided clutch line, and repeat 1&2.

huesmann

iTrader: (1)

Confirm that you have about 3/4" travel at the tip of the slave actuator going from no pedal pressure to floored.

ShockL1ne

Thanks guys, going to try out those things first.

sixshooter

iTrader: (12)

It is not the fluid. It is your clutch Rod adjustment as was indicated. You introduced a new part and must adjust everything to work correctly just like we all have to do every single time. Don't make this more complicated than it has to be.

ShockL1ne

It was indeed the rod at the paddle. It's alot better now, just needs some fine tweaking.

Thanks guys.