Q about the restrictor valve...
Q about the restrictor valve...
Well.... i have my car set to 22psi and ive been running it liek that for a while and i havent had any problems with anything...
today i went on the freeway and WOT in fourth at around 3500rpm and the clutch slipped for a second and then grabbed.... and it would do it in all the high gears.. but only around that rpm range...
if i were to launch from 1st and go up to third and fourth it doesnt slip only when i slip it at the launch a tad......
now my question is could the restrictor valve have gone bad?
is there somehting else that could be wrong?
i dont think its my clutch due to the testing i did..
plus i only have 8k miles on it...
I searched as much as i could... couldnt find an answer...
wut you guys think?
thanx in advance
Joined: Apr 2005
Posts: 9,002
Likes: 12
From: somewhere testing various tires, brakes, and suspensions.
The restrictor valve just limits how fast the fluid can flow in the clutch line. So at launches it will not slap the clutch to the flywheel, but let it out slower to prevent drivetrain shock. Once the clutch is engaged it doesnt do much. What you have decribed is the clutch spinning on the flywheel.
In which, I believe you have a slipping clutch, search for adjusting clutch and go from there. If you have a lot of miles or mods your clutch could be telling you that its about had enough. Adjust it a tad to see if that helps, if it doesnt or gets worse then it might be time to think of replacing the clutch.
I had warped my pressure plate, and the stock flywheel just enough that when everything was engaged I was only using a portion of my unit. But my clutch pad was still in perfect condition. When I did the clutch swap to the ACT I found this all out. Luckly I had the ACT sitting on my bench because I was going to do it anyway down the road, I never was a fan of the stock clutch feel, knew that when I bought it. When I did everything I also took out the restrictor, for me it drives better without it.
In which, I believe you have a slipping clutch, search for adjusting clutch and go from there. If you have a lot of miles or mods your clutch could be telling you that its about had enough. Adjust it a tad to see if that helps, if it doesnt or gets worse then it might be time to think of replacing the clutch.
I had warped my pressure plate, and the stock flywheel just enough that when everything was engaged I was only using a portion of my unit. But my clutch pad was still in perfect condition. When I did the clutch swap to the ACT I found this all out. Luckly I had the ACT sitting on my bench because I was going to do it anyway down the road, I never was a fan of the stock clutch feel, knew that when I bought it. When I did everything I also took out the restrictor, for me it drives better without it.
i c.... well yea i adjusted the clutch.. and no difference. still feels the same...
this is wut it does....
3rd 4rh and 5th
3k rpms...
i WOT it.. turbo spools up to 22psi clutch slips for about 500rpms and then grabs fine.. and psi does not change... so im still stoked about it actually needing a new clutch...
but..
gah... lol
i just dont know wut to say...
im still mad at the fact that it only slips there.. it doesnt slip when launching or anythign.. just at that rpm... makes me mad.. lol
well if anyone else wants to throw in their two cents go ahead.. in the mean time im looking for a SS clutch line and a new clutch.. hehe...
thanx again
this is wut it does....
3rd 4rh and 5th
3k rpms...
i WOT it.. turbo spools up to 22psi clutch slips for about 500rpms and then grabs fine.. and psi does not change... so im still stoked about it actually needing a new clutch...
but..
gah... lol
i just dont know wut to say...
im still mad at the fact that it only slips there.. it doesnt slip when launching or anythign.. just at that rpm... makes me mad.. lol
well if anyone else wants to throw in their two cents go ahead.. in the mean time im looking for a SS clutch line and a new clutch.. hehe...
thanx again
your clutch is on its way out. the reason it slips at that RPM and only in high gear is because that is where the TQ starts to come on strong & when your in a high gear the engine will hold that power for longer.
For example in 2nd gear to go from 2,000 - 7,000 rpm maybe takes 3-4 seconds, your engine is only making peak TQ for a fraction of that time so the clutch can handle it. But in 4th from 2,000 - 7,000 rpm is more like 8-10 seconds (just guessing) because its a taller gear so your engine will be making peak TQ for a longer period of time. As you can guess 5th gear is even worse.
Don't worry though, if you drive normal for a 1,000 miles or so eventually you can wear the "glaze" off the clutch and it will grab like normal again but its only a matter of time until its going to need to be replaced. Hopefully your FW isn't warped from too much heat.
For example in 2nd gear to go from 2,000 - 7,000 rpm maybe takes 3-4 seconds, your engine is only making peak TQ for a fraction of that time so the clutch can handle it. But in 4th from 2,000 - 7,000 rpm is more like 8-10 seconds (just guessing) because its a taller gear so your engine will be making peak TQ for a longer period of time. As you can guess 5th gear is even worse.
Don't worry though, if you drive normal for a 1,000 miles or so eventually you can wear the "glaze" off the clutch and it will grab like normal again but its only a matter of time until its going to need to be replaced. Hopefully your FW isn't warped from too much heat.




