Project: Engine Build for beginners.

[Flat on my back]

Engine work...

is likely to include:-

1. check mains tolerances,
2. check stroke clearance,
3. machine hole for oil drain,
4. re-bore to 83.0mm,
5. water way machining,
6. machine holes for cambelt tensioner.

Then paint block, chase all tapped holes and maybe coat internals of the water jacket with a rust 'proofer'?

[S2central.net]

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That tensioner looks to high on the block for my memory. Could be wrong though... You need an ABY or AAN block to compare with side by side - use existing bolt holes for oil pump housing (for example) to measure exactly where the new holes need drilled for the ABY style tensioner.

Weirdly I think the NG engine uses the same belt tensioner as ABY, but I dunno if its in exactly the same place. With Audi you can't predict everything.

Paul

[Flat on my back]

Hmmmmm...

Took the dims off an ABY block...have to measure again...or find a piccy.

Off a searching we will go...

[Mark Halligan]

Took the dims off an ABY block...have to measure again...or find a piccy.

Off a searching we will go...

Not sure if the angle is right, but this might help?

[Mark Halligan]

And without the tensioner fitted, showing the bolt holes...HTH

[S2central.net]

I'll get me coat then... Another job for 'Preparation H'

[Flat on my back]

.

I'll pdf the dims i took for future...

Cheers guys.

[Flat on my back]

Here's one i made earlier...

pdf showing the dims for the tensioner...measured wiv my bestest steel rule and digi vernier...

[S2central.net]

NICE job miladdo - gotta do this to a 3B block someday in the future... After the 7A head is made good. Then attach RS2 EM, IC, Turbo, Carsten IM etc etc - oh why do we do it to ourselves ?



BUT - Can you add hole depth to this drawing ?

[Flat on my back]

Yep...

once i've correctly measured how much metal is in the 7A block against the ABY.

The holes in the ABY were 15mm deep, too much for a 7A block.

[S2central.net]

How do you know that 15mm is too deep on the 7A ?

Has anyone done this on a 3B - what depth ?

[Flat on my back]

.

You can just about measure the hole nearest the water pump...bout 11mm on a 7A block...

Or plan B:-

Drill oversize holes through to the water jacket in the block with a step on the front face, then interference fit over long plugs and drill into these for the required depth.

Might have to go for plan B if i cant get a proper thread depth.

[pixsaudisex2]

i should have your sump done by saturday ,will you be going if its a yes il bring it along.

[Flat on my back]

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To Curborough, yes.

[pixsaudisex2]

see you then then