PLEASE HELP!!!! CLUTCH PROBLEMS

ONLY for ADVANCED technical discussion about the 240sx!
derock240
Posts: 9
Joined: Sun Aug 16, 2009 3:09 pm
Car: 92 nissan 240sx

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I got a 92 240sx with a stock ka motor! i recieved the car with needing a clutch, or so i thought, after pulling out the clutch i realized the disc wasnt all the way gone, and my slave cylinder was stuck and wouldnt release! i replaced the clutch and slave and got it goin and it worked fine for about 500 miles or so and then it was slipping at times, the new slave cylinder had fluid coming out the boot so replaced the slave cylinder again and new master cylinder and rebleed the system worked good for about 150miles or so and now once i drive a short distance using the clutch frequently it begins to slip then it will fully slip and vehicle wont move! once i let the car sit for a few minutes and get back in it it will work fine again then begin slipping shortly all over again! wtf? any insight? whats the accumalater inline do? could this be causing this problem? help please


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S14Juggalo
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Joined: Fri Aug 14, 2009 4:39 pm
Car: 95 240sx (S14)

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i would actually replace that clutch disc it and the box that line goes into could be clogging soon it might make you lines colapse. I would also check your clutch disc too just to be sure its not glazed over all the way now.

bruinbear714
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Did you clean the clutch disc and flywheel before assembling them? Did you bleed your clutch system? Is the clutch pedal adjusted?

derock240
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Joined: Sun Aug 16, 2009 3:09 pm
Car: 92 nissan 240sx

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ya i fully cleaned the disc and flywheel before instal, and ya the system was bleed and the master cylinder was bench bleed, but just today it wouldnt move it was slipping so bad so opened the bleeder screw on it and it shot out like there was alot of pressure on it with the clutch pedal fully released, then i pumped and tryied again and it was normal again, and now its not slipping anymore yet but this was all the same circumstances as before! can that accumulator box trap air or something? or what do you think cause it was bleed completely last time!

liquid_cool
Posts: 1700
Joined: Sat Jul 05, 2008 3:02 am
Car: 1990 Nissan 240SX KA24DE-T swap 8.6:1cr, duelsprings, ti retainers,supertech pistons, K1 H-beems balanced internals ect ect

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take a pic and post it up for us so we can see the condition of the box..slave..master and clutch disc if possible..

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S14Juggalo
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Car: 95 240sx (S14)

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Sounds like that box is being a turd man! If you use dot3 brake fluid for clutch fluid it will rust the box it absorbs moisture so it sounds like that box is fouling on you any rust when it squirted out?

derock240
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Joined: Sun Aug 16, 2009 3:09 pm
Car: 92 nissan 240sx

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no theres no rust from what i can tell but ya i was thinking that was the problem! is that a necessity or can i just run a hard line straight to the slave cylinder! whats your suggestion on it?

derock240
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Car: 92 nissan 240sx

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ok cool i will do that tomorrow when its light out and get them posted up but the slave and master are new and they very much look new, the box is completely back like from the undercoating from when the car was new so im thinking its the original but ill get some pics tomorrow! thanks!

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S14Juggalo
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Car: 95 240sx (S14)

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Hmmmmm i dont really know about by passing it im thinking you might need that for something important but idk ive never by passed it before i just replaced it when mine totally locked up on me on my old s13 back in the day!

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eastcoastchaos
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Car: 95 240sx

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are you talking about the damper box? If so you can definately remove it with no problems.It sounds like the fluid is not releasing back into the master properly, any excess pressure when your off the clutch should be pumped into the master, if it can't fully release the pressure in the line then it's allways partially holding the clutch and it will slip like crazy.

Remove damper box by unthreading pipe fitting, bend pipe to line up with the slave and then thread it directly to the slave, it's a pain in the a$$ to bleed if you don't remove it. Also drain all the fluid in the system and use compressed air to blow out all the little ports at the bottem of the master, I'm pretty sure something is clogging the relief port.

liquid_cool
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Car: 1990 Nissan 240SX KA24DE-T swap 8.6:1cr, duelsprings, ti retainers,supertech pistons, K1 H-beems balanced internals ect ect

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he's rite..you can by pass it..as for the dot3 absorbing water..thats true..but it would only start rustng in extreem cases...i use dot 5.1 its a high temp fluid..you can settle for dot 3 if ya like but dot4 and dot5.1 are good recomendations for someone who plans on alot of clutch kiks in the furture..and depending on how hot ya are gone get your cluct and surounding area.

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S14Juggalo
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Car: 95 240sx (S14)

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liquid_cool wrote:he's rite..you can by pass it..as for the dot3 absorbing water..thats true..but it would only start rustng in extreem cases...i use dot 5.1 its a high temp fluid..you can settle for dot 3 if ya like but dot4 and dot5.1 are good recomendations for someone who plans on alot of clutch kiks in the furture..and depending on how hot ya are gone get your cluct and surounding area.
Off subject but where can i get my hands on some dot5.1 i cant find it anywhere

liquid_cool
Posts: 1700
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Car: 1990 Nissan 240SX KA24DE-T swap 8.6:1cr, duelsprings, ti retainers,supertech pistons, K1 H-beems balanced internals ect ect

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you can get it or order it from most performance supply places or performance parts shops..you might have to ask for it...but donot..confuse dot5..with dot 5.1..dot 5 does not absorb water..and once you use dot5..you can not use any other fluid in the system...to play it safe..use dot 4..should be good enough for extreem clutch use anyways.

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S14Juggalo
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Car: 95 240sx (S14)

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Right dot 5 can not be mixed with any other dot types. Thanx bro

derock240
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Car: 92 nissan 240sx

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ya i believe thats what it is im not sure for the exact name or anything but its located under the car just behind the slave cylinder location but mounted up on the bottom of the car and off to the side! it is just a square box and it has line in then line out and then another set of line in and out that just is a u line! didnt think that was important but not knowing much about these cars figured id check! thanks for the impute man!

derock240
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Car: 92 nissan 240sx

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ya i dont do alot of clutch in and out honestly im using the car now as a daily and round trip back and fourth to work is prob about 30 miles or so but i will go ahead and switch the brake fluid just to be safe on it and go the extra mile! thanks for the suggestions!

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S14Juggalo
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well higher dot types excluding dot 5 cuz its just to boss its for pure race cars have a higher boiling point dont absorb moisture keeping your brake components much more rust free inside its pretty nice but as far as that box goes i wouldnt by pass it i would replace it but thats just me they said its all green to by pass thats your decision. let me know what happens with the ride

derock240
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Car: 92 nissan 240sx

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ok cool man ya im kinda torn between it honestly im not sure which route to go but i will try one and let ya know for sure and ya as of now this car is just my daily got one project car already cant afford two but this one is next for sure but ya ill just go with the dot 4 cause i wont be racing it anytime soon! Thanks again man really appreciate the help!

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S14Juggalo
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Car: 95 240sx (S14)

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im running dot 3 as of now but really want dot4 or 5.1 cuz im really hard on brakes i do alot of highway chasing hahaha! Whats your project?

derock240
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Car: 92 nissan 240sx

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ya im pretty hard on them myself so it should help out quite a bit to swap over to dot 4! but ya i got a 97 eclipse spider that has a fully built 2.0 in it with alot done to it, so far seen 454 on the dino on pump gas but definitly goin for more and swapping it to awd soon, but still doesnt meet all my wants i definitly love the rwd so soon i will be looking to go big on the 240! but one prob is i cant keep the eclipse goin long enough without something else going wrong to do it and there my two cars to drive! lol

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S14Juggalo
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Car: 95 240sx (S14)

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Fully built 420A? Or is it a G series engine? I got fwd rims for sale if your interested? I hea what your saying yeah its hard to have 2 projects going at one time when they are your dd/projects!

derock240
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Car: 92 nissan 240sx

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oh no its definitly the 4g63t! ya ill have to invest in a little car with excellent gas milage or somethin and then i can start on the 240 and not have to worry about it! but ya i may be interested in the rims! do they got good tires on them? i am looking for something small to put slicks on temp until i get the awd done!

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S14Juggalo
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Car: 95 240sx (S14)

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Nice isnt that the evo block? The fronts hold air are driveable but have camber wear on them rears are perfect! I had them on my 97 200sx se-r.

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S14Juggalo
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Car: 95 240sx (S14)

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zer...-help

My wheels! I need something that will fit my s14 better then these!


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