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Getting back on the road

Discussion in 'Members Projects' started by sdibbers, May 22, 2014.

  1. PeterZRH

    PeterZRH Well-Known Member

    That sounds about as sweet as the Rover 4 pot gets to these ears. If you are running on standard carbs, that's a really nice idle too.
     
    sdibbers likes this.
  2. sdibbers

    sdibbers Well-Known Member

    Running on HIF6 carbs with a block bored out to 2200 specs.
     
  3. sdibbers

    sdibbers Well-Known Member

    Bollocks! Checked the oil this morning after she’d cooled down. What looks like fine steel (or iron) strands present. Now need to find time to pull the sump and inspect for damage and cause.
     
  4. PeterZRH

    PeterZRH Well-Known Member

    Ah, the HIF6s explain the fact it's not lumpy by design!
     
  5. sdibbers

    sdibbers Well-Known Member

    Following on from my ‘bollocks!’ Moment above. I dropped the sump over the weekend. Oil was a little dirty, even though I’d only done 25 miles I expected that. I’d cleaned a lot of carbon out of the engine from the piston ring blow by, but I knew there’d be some in the galleries etc.

    The good news is there’s no sign of metal in there. I think the small strand like bits of swarf must have come from the dipstick threads. Nothing else has shown up. I did pull some main and big end caps and all looked as expected on the shells. I realized I had a spare pair of thrust bearings on the shelf so replaced them while there.

    The inside of things looked spotless as they should too.

    One thing I had noticed was the oil pressure seemed to take a while to extinguish on a hot start. I pulled the valve cover and checked the camshaft end cover. Sure enough I could tighten one bolt about 3/4 of a turn.

    This time I primed the pump by using a syringe to fill both ports in the filter adaptor the square one goes to the pump, the center one goes to the crank galleries. I also pre-filled the new filter. This seemed to help with the amount of turning over with the plugs out after filling with fresh oil. The oil light went out a lot quicker.

    Took her for a test drive and she feels great! Smooth, quiet, much more torque than before the repair work (not surprising considering the low compression on the one cylinder). I’ve taken the most approved way of breaking in the rings, a strong pull on 1/2 throttle with her decelerating, followed by 3/4 throttle etc. the rings certainly seem nicely seated now. Still a few things to look at. She has a very small but irregular misfire at idle, I’ll check the spark plug gaps and have new HT leads on their way. The idle is mostly perfect, so my guess is it’s a ignition issue. We shall see.

    Here’s some pics of the sexy insides.
    B273B347-408D-4A67-A679-838D7B57DE8A.jpeg AFEFB17A-E96D-4601-9377-8C6811C4C5CC.jpeg A89CEE20-F668-4B75-87E1-69DD76DADA2B.jpeg 8FF84220-EDB2-4A02-BE9F-AC7EA411F4CF.jpeg
     
    DaveCol and Demetris like this.
  6. PepijnWK

    PepijnWK Member

    Well tha is a relief!!! Better sure than sorry!!!! Engine sounds very nice very smooth!!! especially for a 2200 TC
     
    sdibbers likes this.
  7. sdibbers

    sdibbers Well-Known Member

    You're not kidding! I also have a very understanding wife that was ok with me spending the best part of another day laying under the car instead of helping around the house!
     
  8. sdibbers

    sdibbers Well-Known Member

    Still a very slight miss at idle. Next plan is new plugs, HT leads and coil as they’re all getting up there. That and the spark plug on no. 3 cylinder probably got coked up a bit by the low compression. Truth be told I think I was so pre-occupied with the more major work I forgot to check those on top of the rest. Keep tuned for more, well, tuning.
     
    Barten likes this.
  9. Thijs Leuven

    Thijs Leuven Member

    Keep up the good work!
     
    sdibbers likes this.
  10. sdibbers

    sdibbers Well-Known Member

    Can’t seem to catch a break with parts. Knowing the slight mis at idle is most likely plug related, I had reused the ones from before the repair. So I ordered some new Champion RN7YC plugs from Amazon. Knowing modern Champs have a bit of a dodgy reputation I measured resistance before fitting last night. First three plugs were within spec of 40-60kohm last one was 900kohm. So, replacement on its way. At least I found out before fitting.
     
  11. sdibbers

    sdibbers Well-Known Member

    Sweet hallelujah! Well, I finally got the right plugs with the correct internal resistance. Pulled the old ones and sure enough I must have knocked one before, gap was down to .018”. I’m using the equivalent to a sports coil producing 40kv so gapped the new plugs to 0.032”

    While I had the plugs out I ran another compression test. Results cold are 182,180,177,180.

    Anyways, after fitting the fancy new coil and correctly gapped plugs took her out for a run. And WOW! What a car! So much more poke, and very quiet and smooth. I can only imagine this is what they were like when new. Came home to collect Kim before we went out to grab a take away, where apon it came down in buckets with a thunderstorm. Oh well, I’ll get to drive her properly one day.....
     

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