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Preyupy

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Everything posted by Preyupy

  1. Preyupy
    Gordon is right. It’s still a 8 mm bolt in an aluminum thread. I have been using my calibrated elbow for the last 40 years on those. Finding that bolt will be much harder. Call if you need one I’m a horder, I’m sure there are a few laying around here somewhere.
  2. Preyupy
    Yes you can change the front part of the transmission case (with integral bell housing) with the one from a M10 based gearbox. You need to make sure to get the proper bearing spacers and preload set correctly. It is a fairly easy swap if you have ever had one of these gearboxes apart and understand what is inside. If you just start taking things apart you will probably have things fall out of the case and not know where they came from or how to get them back in place.
  3. Preyupy
    Wes Ingram has rebuilt 7 turbo pumps for me. Ingram Enterprises (Wesingram.com) They have been doing Kugelfischer pumps for Tii's for years. Wes and Herb have been doing Turbo pumps for me for about 15 years now.
  4. Preyupy
    The 2 top bolts are 8mm on a M10/M30 engine and 10mm on the M20/M42 engines. Those look like 10mm holes to me along with the wider spacing of the M20 block.
  5. Preyupy
    Oh I had Semperit M401, Pirelli P3 , Michelin XAS , Dunlop SP Super, 3011 Phoenix Stahlflex, and even a set of Pirelli P7 Bolla Rossas back then. Plus all of the slicks I used for Solo II.
  6. Preyupy
    They look right and work great. I just wish I could have afforded them back in the mid 70's. I did burn through a few sets of P3 Pirellis back then (I would buy some of them if they would remake them as well)
  7. Preyupy
    I'm sorry to hear of Bill's passing. I talked to him last fall and got a chance to catch up. He has always been a source of information and help anytime we were at Sears Point racing. I have a couple of cars that I now take care of that used to hang out at his shop and we always got to have long CSL conversations. We were at HIstoric LeMans in 2012 paddocked next to each other and helped each other get through the weekend. Bill will be greatly missed.
  8. Preyupy
    I have taken BMW m10 based race engines that made 225 hp @8000 rpm on a DTS engine dyno and put them in race cars and run them on our Dynojet drum dyno. In a standard 2002 with a 5 speed transmission (running in the 1:1 gear) and 4.11 final drive with just enough air in the tires to keep traction throughout the run we saw 185-192 hp (tire pressure and engine oil temp seem to make the most difference ). The same engine in a sports racer using a Hewland transaxle at somewhere close to the same overall gear ratio ( tire size and gears = roughly the same speed/rpm) the numbers were slightly higher 188-196hp. Obviously these tests we not done on the same day so weather conditions did change but this is what I usually use to compare OUR Dynojet to the DTS dyno I usually use. I never split hairs on HP/Torque numbers between different dyno, I have seen some dynos that are obviously calibrated in Clydesdales and others in Shetland Ponies.
  9. Preyupy
    I haven't seen anyone forget the Pressure Plate, but I have seen a BMW master tech forget to put the clutch disc in. I was helping him put the exhaust system back on a 635CSI when he noticed the new disc sitting on the work bench. I LMAO.
  10. Preyupy
    If that is a picture of the throw out bearing arm with the bearing just touching the pressure plate and not compressing it. You have the wrong throw out bearing or something else is wrong. The arm is going to hit the bell housing before it can push the pressure plate far enough to disengage the clutch. Do you have a picture of the TOB mounted on the arm before you installed the transmission on the engine?
  11. Preyupy
    With the 232 transmission you should be using the original style clutch slave cylinder (mounted low on the bellhousing with the end of the throw out bearing arm coming out of the bell housing. Using Zinz's picture above its the cylinder on the left. With everything assembled push the rod coming out of the slave cylinder in as far as it will go. How much gap between the throw out bearing arm (with the bearing touching but not depressing the pressure plate) and the end of the push rod do you have? It sounds like you have the wrong push rod in the cylinder, and you are running the piston in the cylinder all the way to the stop before you move the arm far enough to release the clutch.
  12. Preyupy
    I just bought some for a 235/5 rebuild and the only place I could find them was the BMW dealer. I did wind up with a problem as the new synchro rings were 0.96mm too wide. I have never had this problem before with rings I have purchased from BMW. I was able to put them on the surface grinder and get them down to the proper measurement. I thought about sending them back and trying again but it took over a month to get these and I just needed to get the gearbox done.
  13. Preyupy
    The L-jet system is airflow based so the theoretically it should compensate for the increased displacement at the lower engine speeds and throttle settings. You should install a wide band O2 sensor and monitor it. My main concern would be full throttle higher RPM as you might run into max fuel delivery and go lean. My recommendation is staying richer than 13:1 under load ( you will see much leaner than that under very light loads and decel). You can affect mixture by adjusting the clock spring inside the Air Flow Meter. The 6mm mixture adjustment screw will only change the idle mixture with very little change in off idle mixture.
  14. Preyupy
    Glad you found one.
  15. Preyupy
    It would be good information if you taped the fuel pressure gauge to the windshield and went for a drive. If the pressure is steady at your 22.5 psi when you have the engine under load at 3500+ rpm you probably have a bad fuel pressure regulator valve, not a clogged intake screen or air leak on the inlet side of the pump. If it was a clogged fuel filter the fuel pressure would be closer to the 29 psi they normally run if you turn on the pump without starting the engine. That pump should be capable of supplying at least 3x the volume that engine needs and well over 80psi if it is healthy. But again if the pressure does not fall off under load it’s probably NOT a fuel pump or pickup problem.
  16. Preyupy
    Mine was the 1st ever in Western Washington. I am a long time '02 owner so the basics were there. I learned a lot putting mine together. Who would have guessed that I would wind up working on 7 different Turbos over the last few years.
  17. Preyupy
    Thank you. I lusted for a 2002 Turbo ever since I got a ride around the Nurburgring in July 1974 in one. Until I got this one running Rudy's was the only Turbo I had ever even sat in. Only took me 36 years.
  18. Preyupy
    Left the factory on March 13 1974 headed to England. Moved to the US in 2001
  19. Preyupy
    If you look at the actual primary tube diameter and length the headers used on the mid engined sports cars and formula cars are the same as the sedans. The difference is the packaging of the entire engine bay. There are often frame tubes, suspension pieces and even bodywork that dictates that the exhaust has to run much higher and straight out the back of the car compared to in a front engine sedan. All other things being equal straighter pipes flow better.
  20. Preyupy
    I have a decent 4/70 dated 118 head if that will help. I know you are looking for the correct date but if this would help you are welcome to it.
  21. Preyupy
    Your picture shows it as a LEFT HAND DRIVE car. The header was designed for a Right hand drive car with the steering box and shaft on the exhaust side of the engine bay. Seems like a lot of extra bends and heat issues that are not needed in your car.
  22. Preyupy
    It's not that bad actually, your mind is so numb from the noise you don't notice the heat.
  23. Preyupy
    Changing the #4 spark plug on a hot engine is not going to be fun.
  24. Preyupy
    Looks like a large tube race header designed for a Right Hand Drive car. The headers we usually see for Left Hand Drive don't leave any room for the steering box or shaft. This is not a performance improvement over the left hand drive headers it is just necessary for the RHD cars
  25. Preyupy
    And occasionally someone has tried to get really creative with air boxes and completely forgotten to put this hole in the backing plate. They quickly discover the engine won't do anything but idle.
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