Jump to content
HybridZ

skirkland1980

Members
  • Posts

    893
  • Joined

  • Last visited

Posts posted by skirkland1980

  1. Hello. My turbo 2.8L is suffering sticking exhaust valves. This has happened twice this year. It has never happened any other time. It happens during start up. It will run fine then if the car sits a few weeks it will throw off a lash pad. The first time I just reinstalled the lash pad and did a valve adjustment and it was fine so I just thought there was too much clearance. Yesterday it happened again but I think it may valve bent the valve this time. I cannot get the valve all the way up. I did some research and it seems to be common with engines that run leaded fuel as I do. Seems to also happen to engines with high exhaust temps and with valve guides that extend into the exhaust port. I read this in an article regarding aircraft engines. The article said there is no way to fix it but I'm hoping someone here may have experienced this and knows a cure. I was thinking that maybe I need some stainless valves and bronze guides but that's a very big expense if I don't need it. Any suggestions? Thanks.

  2. How often are you driving at wide open throttle? I think cam choice would be most critical. High compression helps too. The best torque mutiplier your vehicle has is the transmission and gears in the diffs. Most 4x4 guys kill thier torque with big tires without changing the gearing to compensate. If you input torque on the drive shaft is 200lbft and the ratio is 3:1 the the output is 600 lbft. If 4:1 then its 800 etc.

  3. I had wheel hop after i welded my diff. Wasn't very violent though. I did find that my rear diff mount was broken so I burned off all the rubber and welded it solid. Also at the same time I did the poly bushings and drag radials. I have no more wheel hop so I'm not sure exactly what fixed it. I'm also now leaving with a 50 shot and trans brake but still no wheel hop either way.

  4. Are you using a turbo distributor? Make sure your timing is matching what ms says it should be. Ms is funny with timing control. It needs a very tight trigger angle range. You may get it to run fine with say 25 degrees trigger angle but then it may be advancing timing when it should be retarding and vice versa.

  5. Ok. I'm not going crazy. Ms is triggering the nitrous. I am getting power and ground to the solenoids but it's very low. Apparently not enough to turn them on about 11.2 volts. This is because the alternator isn't spinning fast enough which has been a problem since I installed the ati damper. I've ordered a voltage regulator that will turn on the alternator at a lower rpm.

  6. Can't get ms to turn the n2o on. I have a switch sending a gound to js4 on the v3.57 board. This is ms2 extra 3.3.2. I have output set to iac1 since I'm using fidle for the fan and I have no idea what "remote port1 bits 0+1" means. I'm using iac1 pin 25 on the db37 to send a 12v signal to a relay. Is that correct or is it ground? All the conditions to trigger the n2o are being fulfilled but nothing. Tps is working correctly, coolant temp above min, rpm within set limits. I can jump pins 87 and 30 and get it to turn on and I swear I felt the relay click but nothing. I tested the relay by check resistance on pins 87&30 while energizing pin 85&86 and seems good. Nitrous worked good before connecting to ms. I had methanol injection on iac1 and it didn't seem to work either.

    post-8737-0-26314900-1469391180_thumb.jpg

    post-8737-0-00242900-1469391226_thumb.jpg

×
×
  • Create New...