What a miserable end

[Mark(The Miser)UK]

I think it's somewhere around 76.5 stock.  The highest (factory) overbore size is 77.5.  3mm sounds like a lot to me, it would be interesting to see how thin it would get.  (and if it could hold the pressure!)

 :twisted: Can you explain where your figure of 3mm comes from ?
A change in diameter of 1mm is 0.5mm radius; which is 0.5 mm of machined flesh. Areas between cylinders will thus see 2 x 0.5mm  which is 1mm decrease in wall thickness between cylinders... Or am I truly as stupid as I pretend to be? :twisted:

[Mark(The Miser)UK]

I think it's somewhere around 76.5 stock.  The highest (factory) overbore size is 77.5.  3mm sounds like a lot to me, it would be interesting to see how thin it would get.  (and if it could hold the pressure!)

 :twisted: Can you explain where your figure of 3mm comes from ?
A change in diameter of 1mm is 0.5mm radius; which is 0.5 mm of machined flesh. Areas between cylinders will thus see 2 x 0.5mm  which is 1mm decrease in wall thickness between cylinders... Or am I truly as stupid as I pretend to be? :twisted:

 :shock: Yep I am...:shock:
1.9l diameter is 79.5?  hence 3mm between walls to bore out a 1.6...
At least I can admit it when I'm wrong :oops:

[Mikeyworks]

pride is knowing when you're wrong....

[lord_verminaard]

 :twisted: Can you explain where your figure of 3mm comes from ?

Ummm, yeah.  79.5 - 76.5 = 3

 

Just messin with ya.  *poke poke*



Brendan
84 Scirocco 8v
00 Camaro L36 M49

[veeman]

I believe you can weld cast iron blocks.  I was at the welding shop and I saw one of the guys welding up a two inch hole in a recent dorF V6 engine that had been involved in an accident....crazy to see the whole motor sitting on the table with everything attached and the guy just welding away at it.

According to him, it's a matter of preheating the area, using the right rod (arc) and doing it bit by bit (somewhat slowly).