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  1. 90silverstang

    Rocker Stud Snapped!! What Roller Rockers In Photo

    More issues, found a bent pushrod. See Pic! Well was checking roller rocker geometry and I couldn't line up the roller rockers on cylinder#5 from side to side with the guide plates. I tried to spin the intake pushrod with my fingers but I noticed it was binding. Look at the pic below. Now I'm...
  2. 90silverstang

    Rocker Stud Snapped!! What Roller Rockers In Photo

    OK-- I found out the brand roller rocker-- it's a PRW. Looks like a quality rocker, anyone running them? Also found out the studs are not ARP's, Speed shop said I should go witha longer stud so the poly lock screws down on more threads. One other thing, I purchased a adjustable push rod to...
  3. 90silverstang

    Rocker Stud Snapped!! What Roller Rockers In Photo

    It looks like a quality rocker, and the 350 I think stands for max spring pressure. On the bottom it reads SPL08 ??
  4. 90silverstang

    Rocker Stud Snapped!! What Roller Rockers In Photo

    srtthis, I emailed the pics to you, thanks!
  5. 90silverstang

    Rocker Stud Snapped!! What Roller Rockers In Photo

    The roller rocker stud snapped on the exhaust valve. The exhaust valve was not opening and what a banging noise through the intake. I guess when the intake valve opened the the exhaust gases went through the intake and back fired. What causes a stud to snap. The poly lock was unbelievably tight...
  6. 90silverstang

    How Can I Know if I have a 347?

    The bottle should be filled with water, correct? If it has air in it already I dont think the measurement would be accurate. I may be wrong. I think the syringe method would work because you can set the plunger all the way down (no air in the syringe). The air from the cylinder would displace...
  7. 90silverstang

    How Can I Know if I have a 347?

    Are you saying to displace the water in the pre measured bottle with the air thats flowing from the cylinder, to see if the air pushes out 710.8cc of water?
  8. 90silverstang

    How Can I Know if I have a 347?

    How about using some kind of air flow meter. (Cubic feet per min). Problem with that is it would be hard to measure because air is not flowing at a constant. Thanks for some of your ideas
  9. 90silverstang

    How Can I Know if I have a 347?

    Is there a way I can test a engine to verify it is a 347, without tearing it down. I know its based on bore and stroke, but how can I measure the stroke?
  10. 90silverstang

    Running Rich,A9M ECU and Oxygen Sensor question

    Update: When I removed the ECU from the kick panel to troubleshoot the oxygen sensor wiring, I forgot to mention I removed moates chip I had on the J3 connector. When I ran the KOEO and KOER test I ran it without the chip installed. KOEO code 11 pass-- KOER code 41 Hego sensor voltage low/system...
  11. 90silverstang

    Running Rich,A9M ECU and Oxygen Sensor question

    Thank you for sharing your experience, I did see a post from JRichter on those resistors, 80 ohm, 2 watt and they get wired across the TAB an TAD solenoid +- terminals? One last question about the A9M ECU, Is this the ECU used for a 1990 manual transmission? Again, Thanks!
  12. 90silverstang

    Running Rich,A9M ECU and Oxygen Sensor question

    SO codes 44, 94 do not hurt performance or Mileage in my case? Can a tune or chip be programmed to ignore the AIR system being deleted?
  13. 90silverstang

    Running Rich,A9M ECU and Oxygen Sensor question

    Thanks Hissin--- Hissin, What changes were you refering to? There is no cats or AIR components, just the control solenoids that are sealed. (vacuum ports). I am not getting any hego codes but the exhaust smells rich. Is it because I'm not running cats?
  14. 90silverstang

    Running Rich,A9M ECU and Oxygen Sensor question

    Thanks Cobra, Ok ran the KOEO test and dumped a code 66, I don't know how it happened but the MAF connector was not seated all the way. Drove car around and dumped KOEO codes and I get a code 11-- pass. Now I ran the KOER test I get code 94 and 44. I don't have air injection pump or the...
  15. 90silverstang

    Running Rich,A9M ECU and Oxygen Sensor question

    Just want to verify if I have the correct ECU ---- A9M is what is on the ECU. I have a 1990 GT Vert with a manual. Checked KOEO and Passed with a 11. Checked timing advance and OK, but----------- I am getting a code 41 which indicates system indicate lean KOER test. The engine is running...
  16. 90silverstang

    What do I test to know if the ECM is switching from open to Closed loop?

    What do I test to know if the ECM is switching from open to Closed loop? Is ther anything that can be monitored with a DVM ?
  17. 90silverstang

    Problem with new 347

    Which should I run KOEO, KOER?
  18. 90silverstang

    Problem with new 347

    I'm having a problem with a new 347. 30lb injector, Edelbrock performer rpm II, LT headers, 190lph FP, Dart 190cc heads. Anyway-- the engine runs well until the engine temp reaches 210F. Would this cause a out of range condition for the EEC, because after the engine gets to 210F it runs like...
  19. 90silverstang

    Vacuum @ Brake Booster??????

    Vacuum Reservoir for Brake Booster Anyone use a vacuum reservoir to assist brake booster? Does the reservoir help? Any input would be appreciated