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mantadoc last won the day on July 20

mantadoc had the most liked content!

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About mantadoc

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    Manta Guru

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    Third sphere from the Sun, Northern Hemisphere, East of Ireland, West of France, South of Scotland and more Northerly than the highest bit of wales.
  1. Ball and spring in oil filter

    Never forget the big black rubber O ring in the top of the timing cover.
  2. Ball and spring in oil filter

    I would first see if a machine shop will turn you a collar to either press in or thread it and use the Loctite Threadlock that needs a 300 degree torch to remove
  3. Ball and spring in oil filter

    Oil Filter bypass valve does not cause a loss of oil pressure. It is there to ensure the filter is bypassed if blocked. If you removed the end cover and gears and did not prime the pump you will have no pressure.
  4. Ball and spring in oil filter

    anywayLook above where the filter mounts in case the filter bypass valve has dropped out A 71 probably has the earlier end plate without a pressure relief valve, OP you can check by looking at it, no big nut, no pressure relief valve in gear cover. Earlier cars had it in the timing cover. Nothing will make it's way out of the end cover to the filter in one piece or without ending the world anyway.
  5. Yup it's not a coupe and not a GTE. Two things that are always going to limit it. Few people use a Manta as a daily anymore, I did for 20 years but rust takes it's toll, so hatch back practicality is not really a desirable second car characteristic.
  6. 20XE retarded timing issue.

    I get you now, so fixed dizzy with no mechanical advance yes? Looking at the chopper for the sensor they have 1 hole not 4 like on a Manta. That essentially means, in my head, they are using it like a crank position sensor almost but only fires every other revolution? If there is a crank sensor as well I would have no idea why they would do it that way, except to track camshaft position to indicate which cylinder is on firing stroke, but of course if using a dizzy cap the management has no need to know about which cylinder is on firing stroke. Thanks for the explanation as I always like to understand the solution to a puzzle Re the firing well before, when trigger wheels are used on cranks, the missing index tooth is well before TDC to give time to process the info and fire
  7. 20XE retarded timing issue.

    Sorry, just trying to understand, but the systems where the ECU does the timing don't (AFAIK) use mechanical advance, they often have a bigger rotor arm, and fixed shaft and the dizzy just distributes the spark and does not time. There is no logical reason for an ECU that controls timing to take a signal from a mechanically advancing distributor. That was the jump in things like motronic 1.5, soon after people realised they could ditch the dizzy and go wasted spark. Even with the dizzy rotor offset you said you timed it with a timing light so that negates that offset so I suspect something else w s done to fix rather than just timing, like making it static or reassembly causing the top half to be the other side of the stop. It appears we are on crossed purposes and I just wanted to understand the issue and fix.
  8. 20XE retarded timing issue.

    The mark on the Dizzy body you point the rotor arm to for static timing should have been the first clue. But if you timed it with a timing light still should not have been an isse. Still all fixed now
  9. 400

    I'll await correction but the road going 400 kit was GRP
  10. 400

    Then it sounds like you don't mean a 400 bodykit and actually mean the "road sport" kit often referred to as i240 kit if you font wing arches are bolted to the wing and not all made in one piece that is likely. if so Rally Teck made moulds to make those off the original kit lost from my Manta before I bought it.
  11. 400

    Rally tech took moulds a few years ago off my original ripple free kit
  12. 20XE retarded timing issue.

    Well you can always test it with a variable speed electric drill
  13. 20XE retarded timing issue.

    Remember you are looking at the bottom of the dizzy when looking from the front of the engine. It's a mechanical advance mechanism, so we have only two options, your measuring is in error, or the dizzy was assembled incorrectly. Because I can't see what you see I would say go back to basics. A static timing light is one that does not have a knob on to vary degrees. My guess would be you dropped the top half of the dizzy shaft in the wrong side of the stops (statement may not be accurate)
  14. 20XE retarded timing issue.

    That sounds correct. Have you checked for internal assembly errors?
  15. 20XE retarded timing issue.

    How exactly are you deciding the car is retarding? If you have a normal static timing light on the crank pulley as RPM increases the light will show the pulley mark not yet at TDC.