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Re: piston direction ?

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DavidP, South Wales

01-21-2013 00:37:40

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Hi Tony,
What engine is this? It is normal to fit the rods and caps with the numbers towards the main fuel pump. This may be the case but can't see it in your photo. If the numbers are not towards the pump seek advice from a workshop manual for confirmation.
As long as the bowls are concentric and there are no 'front' marks on the pistons they will fit either way.
DavidP, South Wales

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Tony in Mass.

01-21-2013 06:13:22

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 Re: piston direction ? in reply to DavidP, South Wales, 01-21-2013 00:37:40  
Hi David, z134 Cont... GAS! As usual with me...
Yes like a perkins or Std, rods and cap numbers are toward the camshaft, which is where a lift pump would be on a diesel I suppose.
Matt P - the (fellow teaching the bloodhound to drive?) did the same with his on a 202 rebuild just lately, Matt must have recieved exactly the same overhaul kit- he went by the dots someone dabbed on the inside of the piston just like I did... I think as soon as I get back at it, I'll put all the 'professional' etched marks on the cam side, even if it seems to make no mechanical difference. This just gives me a creepy feeling set up like this, easy piston retainers, so no great waste of time to ease my mind...
As I type this... seems a good question would be- does a z134 have offset wristpins, or everything centered and this positioning makes no difference? I vote for centered... but this still looks strange...

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