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Author Topic: Modestine  (Read 98537 times)
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simonandjuliet
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« Reply #300 on: 05 April, 2020, 05:57:15 AM »

Degreasing - my favourite job !

What size are the pistons ? (Diametre of bore)
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S1 Aprilia Cabrio, S2 Aprilia, S1 Promiscuo,S2 camioncino, S2 furgoncino, , R4 Sinpar, R4 Rodeo, R60 Tractor,R60 S, Moto Guzzi Ercole, Disco 3, Mini ALL4 JCW, Moto Guzzi Cardellino 73,Fulvia Berlina GT, Fulvia Rallye S, Royal Enfield Himalayan
GG
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B20 s.2, Appia C10 unrestored


WWW
« Reply #301 on: 05 April, 2020, 06:32:48 AM »

It even looks heavy.
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B20 s.2, Appia C10 unrestored
lancialulu
Press Officer
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« Reply #302 on: 05 April, 2020, 07:05:25 AM »

Could the rattle be timing chain flutter or something related as worn? Where do you get new sprockets.?
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Its not the winning but taking part! or is it taking apart?
1955 Aurelia B12
1967 Flavia Vignale iniezione
1967 Fulvia 1.3HFR
1972 Fulvia 1600HF
1972 Fulvia 1600HF
1972 1600 Fulvia Sport
1979 2500 Gamma Coupe
1988 Delta 1.6GTi
1998 Zeta
Dilambdaman
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Posts: 1348



« Reply #303 on: 06 April, 2020, 12:54:27 PM »

Simon.  Bore diameter is 79.37mm. Some years ago a gudgeon pin circlip escaped and came up through the top of a piston! A new piston was required and Morris Parry researched his files and came up with a near match from a 1961 1.6 Ford Orion diesel engine! I picked up a set of four O/E on Ebay and with minimal modification they fitted and have been performing OK since. If I'm honest I would like to have the engined re-bored and a new set of pistons made. Eight of them and  expensive I guess.

Tim. Timing chain and sprocket wear is a real possibility and again as with the pistons if money were no object I would have new chains and sprockets. Dread to think what that would cost! The go to people are R M Fowler Ltd
http://www.chain-drive.co.uk/

Decisions, decisions.

Robin.
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Robin Lacey 3222

1932 Dilambda
1969 Fulvia S1 1.6HF Fanalone
davidwheeler
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« Reply #304 on: 12 April, 2020, 11:08:13 AM »

You might be lucky enough to find some of the right size yet.   Do be sure that they weigh the same as the originals of course, narrow Vengines are notoriously difficult to balance (see Lambda technical information thread).
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David Wheeler.  Lambdas, Aprilia, Fulvia Sport.(formerly Appia and Thema as well).
DavidLaver
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« Reply #305 on: 12 April, 2020, 08:56:20 PM »


One place to ask.  Any others?

https://www.fwthornton.co.uk/pistons
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David Laver, Lewisham.
Dilambdaman
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« Reply #306 on: 12 April, 2020, 10:52:01 PM »

Thanks David and David.

Robin.
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Robin Lacey 3222

1932 Dilambda
1969 Fulvia S1 1.6HF Fanalone
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