I'd go for some .010 pistons. That way if you ever need to bore the engine
out later on, you have 1 more size up to go. I'm not sure if they have
.030's
Mike
> For those that are interested, here is the estimate
> for machine shop costs to rebuild my 3.9. This does
> not include parts. Thanks for the suggestions on part
> locations, it looks like Ted pretty much has
> everything but the pistons and valves on the shelf,
> and I can get those from RPI across the pond. I'm
> still unsure if I'm going to replace the pistons. It
> will be another about $650 total to replace them.
>
> I looked at the cylinders. The worst is .004 out of
> round. Most are about .002. Some cylinders show
> light scratches, one cylinder has a small water pit.
> A +20 would definately fix the cylinders.
> The shop believes that I can "probably" reuse the
> stock pistons with new rings but I may have a little
> smoke under hard acceleration. I don't really want an
> engine that I just spent $1,500 on smoking during
> acceleration. I'm leaning towards having them replace
> the pistons and overbore the block.
>
> Any words of wisdom from the list on the pistons /
> boring?
>
> Thanks,
>
> Glenn
>
>
>
>
>
>
> Here's the estimate for the machine shop costs:
>
> 1. Take down, clean, measure $200
> 2. Polish Crank $35
> 3. Resurface intake valves $15
> 4. Grind Seats $50 Three angle grind with carbide
> cutter
> 5. Install valve guide liners $75 includes liners
> 6. Reface heads $65
> 7. Remove broken manifold bolts $65
> 8. Resurface exhaust port side head $75
> 9. Clean manifold $20
> 10. Final clean / assemble heads $30
> 11. Assemble complete motor $400
> Subtotal: $1030
>
> If new pistons:
> 12. Press fit rods $50
> 13. Bore block $125
> Subtotal: $175
///
/// mgb-v8@autox.team.net mailing list
/// Send admin requests to majordomo@autox.team.net
/// Send list postings to mgb-v8@autox.team.net
/// Edit your replies! If they include this trailer, they will NOT be sent.
///
|