Outer lip seal and engine repairs

Discussion in 'Mech Tech' started by the 3 crispies, Oct 12, 2014.

  1. 20140924_175838.jpg Prepped roof for painting;
    where is best place to get outer lip seal poptop parts or any other reccomendations.
    Where do I start and stop rear ?
    Also did engine set ups today 6 out of 8 tappets badly out, timing out and set carbs up the best 1/2 carb seemed to rich but when weakened engine stalled 3/4 seemed better. Just couldnt compression test as my tester was not long enough to fit .
    Next job is engine piston strip in 2 weeks a quick dilema do I stick with 1600cc or uprate to 1649cc as not confident to do total strip this time.
     
    Last edited: Oct 12, 2014
  2. A 1641 is one moped's-worth extra capacity. Is it worth the expense? I'd doubt you'd notice the difference.
     
  3. Zed

    Zed Gradually getting grumpier

    That's my line. :)
    Not worth it - the 1600 barrels are stronger.
     
    Paul Weeding likes this.
  4. mikedjames

    mikedjames Supporter

    There seems to be better places to spend money than bigger barrels. Carburettors and exhausts seem to pay back more.
    But if the pistons and cylinders need replacing then the percentage difference in price is not large compared with the cheapest and most expensive versions of the same size pistons.
     
    vanorak likes this.
  5. Are such as mahle ones better and make much difference on stock engine for extra £110+
     
  6. if the B's & P's are serviceable, better to spend your money getting the valve seats cut and reground properly, while the heads are off
     

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