Jump to content
SAU Community

Clutch Fighting Back Gtr `91

rasored
 Share

Recommended Posts

rasored Enthusiast

rasored

Posted
Posted

had the head skimmed as was warped ( 0.8" )

on returning to the road I noticed that the brakes were crap and had little effect and the clutch pedal is pushing against my foot when revving and driving !

Any ideas what is wrong ?

cheers all

Link to comment
https://www.sau.com.au/forums/topic/430877-clutch-fighting-back-gtr-91/
Share on other sites
blind_elk Grand Master

blind_elk

Posted
Posted

had the head skimmed as was warped ( 0.8" )

on returning to the road I noticed that the brakes were crap and had little effect and the clutch pedal is pushing against my foot when revving and driving !

Any ideas what is wrong ?

cheers all

Bad idea, skimming the head. Now the face is flat but the top side is still warped, so cams are bent.

What do you mean about the clutch pedal? Why is your foot anywhere near the clutch pedal while revving and driving?

rasored Enthusiast

rasored

Posted
  • Author
Posted

No-eyed Deer - I had never even thought about your bent cam point !!

Think i will call the engineer and see what he says - just me being inquisitive .

Fitted to the car is an OSGilken multi plate clutch and in traffic if i sit with it depressed in gear it gets hot and will judder when next used !

SO I return to neutral every time i am in traffic with my foot resting on the clutch ready to go . This is when i found the clutch pedal pushing my foot up when i revved the engine .

Also the brake servo pipe is SERIOUSLY under pressure / almost solid feeling when the engine is running .

I was thinking maybe there is an issue with the AAC valve as the engine rev`s have also increased after refitting the head .

Bloody Hicas started to try and kill me today as well , keeps pulsing and trying to correct the steering wheel angle to straight in a bend ?? NOT going to lock out as when it works it is so much faster on the road - have heard that not that good on a track though .

rasored Enthusiast

rasored

Posted
  • Author
Posted

found the issue - the O ring at the rear of the clutch master cylinder that seals the servo unit to the master cylinder was split in half and so letting air in .

Found part of it sticking out of the vacuum pipe that connects to the 1 way valve and then AAC valve .

Lucky break as would not have thought of that !

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • RP1421
      S15 Spec R

      By RP1421 · Posted

      A few small updates since the previous post and lessons. I decided to do a little interior light upgrade on the 110. I quite like the iilumo items, even if they're a bit of a premium over other brands. You'll also note the Stedi Fogs, that will go into the S15 fog lights as I needed to match the bulbs since I got the new ones earlier. I hope they fit as the body is quite a bit longer than your normal bulb.  Annoyingly, I managed to trip the fuse, which normally wouldn't be an issue until I located the fuse. I can't say I've ever come across this. I had lucked out that someone nearby had a spare, but oddly enough Toyota dealerships seem to keep this in stock. I ordered some to keep in my stash and as luck would have it, someone else nearby tripped the same fuse so I passed on the favour.  I also did a little service on the 110 ahead of some additional work coming up. It's been annoying that Goleby's stopped carrying this particular HKS filter for the 110, so now I need to keep them on order from Japan. I also took the opportunity to install a bash plate and number plate riser. The plate riser is such a cheap but nice fix to help really tidy up the car. I'm tempted to now also replace my headlights, on this car. Both items were from Project Aero.    I also needed to replace the rear tyres on the 110, and after trying to get it aligned learnt that I need to replace some bushes in the front end, so that's next.  Closing out this update with a nicer picture as always! 
    • Murray_Calavera
      WTAC 2025

      By Murray_Calavera · Posted

      Yeah mate, never miss it.
    • Ozdavroz
      WTAC 2025

      By Ozdavroz · Posted

      Any going to watch World Time Attack at SMSP this year?
    • Jarsky
      R33 Fuel Pump & Brakes after alarm swap

      By Jarsky · Posted

      Appreciate the correction on the "ground", that will make a huge difference to looking at this. That makes complete sense about AF70/AF71 which is what I had come down to being the issue, one of these. I'll have another look in the ignition wiring when I get a chance next week. I'll also make up a jumper wire for running that AF73 test.  ECU is fine, relay itself is fine, pump harness is fine and the pump itself is fine. I am going to upgrade the Walbro 255 anyway with a DW300 I have since I need to replace the fuel sender and I'm going to upgrade the FPR with my chasebays kit ready for new plenum/injectors/dbw, but I'll get this working first. That's why this is so frustrating. 
    • zillah
      Recommendation for engine oil funnel spill free

      By zillah · Posted

      hahaha good on
×
×
  • Create New...