iamtheyi

Changed the clutch line with a SS one and the problem is still there. Colder weather, pressure decreases. Warmer weather and after the car warms up, pedal stiffens. Went to the track day and clutch was still grabbing even while very stiff.

Any more ideas? Friend suggested that I used the wrong grease on the throwout bearing and transmission shaft and that's leading to the bearing not being able to move easily.

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jr_ss

What type of clutch are you using?

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My SR20VET

iamtheyi

Competition Clutch Stage 1 for KA24

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slideways40

I am having 100% the same problems with my ka-t with the clutch. I have a brand new master, slave, clutch, and new SS clutch line. Still cant figure it out. Only thing i can think of is the pressure plate not holding bc when mine does it it wont even brake the tires loose. When it doesn't do it tho i have no problem breaking them loose.

h2v7

yea adjust pedal and bypass clutch dampeneer


also get a new stainlesss line from a new master to a new nismo slave it will fix this

iamtheyi

So basically you are saying that replacing my hardline will get rid of this problem? For some reason I highly doubt that.

I have adjusted my clutch pedal numerous times and I bypassed the clutch dampener a long time ago.

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jr_ss

I don't see replacing the hardlines with a SS line fixing the issue. I have an Exedy twin disk on factory MC, slave and hardline without a problem.

How much slop do you have on your pivot arm/TOB at rest? Next time you notice the clutch issue, check to see if that has changed. Your TOB rod isn't bent is it?

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slideways40

I have the auto to manual conversion clutch line and it does the same as yours so changing the line will not fix it

iamtheyi

Could you elaborate what you mean by slop on the pivot arm and TOB at rest?

My TOB rod is not bent. If it were, I don't know how that would affect it the way it's affecting my pedal?

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jr_ss

As in, when you are not pressing on the clutch pedal, how much play do you have between the slave and the PP fingers. Can you wiggle the TOB arm forward and backwards in the direction it typically moves?

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Sliderintrainin

subscribed!



i have the same issue. still trying to figure it out as well.

iamtheyi

How am I supposed to know how much play there is between the slave and Pressure Plate fingers? They don't even touch. I can not move the TOB arm forward in the direction it moves.

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jtaylor

when I push my clutch in to shift it does not come out all the way. I found out one night that the previous owner had wrapped a bungee cord around the very top of the clutch so it would disengage fully. Now while shifting and pushing the clutch in all the way down and shifting i sometimes grind the gears. While shifting i can feel the gears spinning and have to wait till they disengage so i will not grind while shifting. Have you tried replacing the clutch, flywheel, pressure plate, and throwout bearing to ensure all are new? I will have to wait till I will be done training in the field before I can change all those out. With also the master cylinder and lines.

jr_ss

So you cannot move the TOB arm that protrudes from the side of the trans either forward or backward? It should be marginal at best, so you really shouldn't see much movement. I'm just trying to get an idea and rule out things it could possibly be.

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h2v7

NISMO slave!!!!!!! + brand new nissan master

iamtheyi

I replaced the clutch myself. I am definitely sure they are new lol. and I also don't have a bungie cord in my tranny hahaha.

I can move it back but that just pushes into my slave cylinder?

I actually read another thread that had a guy do that but did not alleviate the problem.

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jr_ss

Yeah if you push on it hard enough it will, I'm just talking about the "slack" persay.

Nismo slave's are more commonly swapped on for heavy duty clutches, not because pedal pressure changes while you are driving.

I recall you stating your fluid was already changing colors after installing the MC a week prior. Have you since replaced it? I would buy an OEM MC and go from there. Sometimes it's impossible to actually pinpoint the problem. I'm still leaning towards the MC leaking down/drawning air into it. Have you noticed any leaks inside the cabin coming from the MC?

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iamtheyi

Guess I'll take a look into the slave and clutch fork when it stops raining in a couple days when I get a day off work also.

No leaks inside the cabin from the master. But it does seem like the seals on the master or slave go out rather quick seeing as how the fluid gets dark quickly. I've been holding off on the OEM master and slave because they're like 100 dollars each lol. I'd rather buy tires but what can I do.

I have wheel bearings to replace too. Cars...

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Foolish

Pretty sure the answer has been given, I was having the same issue, replaced Slave Cyl, didn't work, bled everything, didn't work!

Delete the clutch dampener and replace the clutch master cylinder and everything should be PERFECT!

brianksm

I had the exact same issue and ended up replacing the master, slave, deleting the clutch dampener and hardlines with an agency power 52" ss clutch line, bled it and problem was solved. Later noticed a pin hole in my slaves rubber boot.

iamtheyi

I have found the problem. It WAS the Clutch Master Cylinder. How disappointed I am lol. So anyone who is having the same problem can diagnose.

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Foolish

Glad everything worked out! I felt pretty stupid when I figured it was mine, instead of replacing that I did everything else BUT that. /: silly s13s

racers4life77

I had the same issue with 3 of my remanufactured CM cylinder from the parts store. So i decided to tear each of them down and find out what was failing.
Attached to the piston is a valve that lets fluid in when you let go of the pedal, this little valve went bad in all 3 of my reman CMC in my car in less then a year, very frustrating!
So i bought a( MASTER CYLINDER REPAIR KIT) for about $18 from Nissan and put in the reman cylinder and works perfect.

jtaylor

I bought the master and slave cylinder to replace the old ones and now it works like a champ.

xMOAR LOW S13x

this might not be the problem but, are you shure your throw out bearing isnt bad. it shouldnt really affect pedal pressure but it could affect how and where the clutch engages.

iamtheyi

I am 100% sure. Bad throwout bearings make a discernible noise.

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joker1984

Special forces vet... See it's people like you who give us a bad name nobody asked for the sympathy game... Thank you for serving by the way I've been active duty for 9 1/2 years as well with two deployments don't use that as an excuse on these social media sites it's pathetic... I'm tired of see this crap on Facebook an every where else keep it to ur self most of us who deployed have PTSD.. An here's a true fact you don't have to go to war to get PTSD. So stop using it as an excuse thanks... Sorry everyone this just has Ben bugging me.