So it boils down to the heads which you have already claimed will all fail and even from the factory will have failed within a few '000 miles. pah! As we have already discussed Judd used the FAI gasket at around the same time as I did and stopped using it about the same time. Are they on your idiot list?
In most cases these are customer supplied heads… which according to you will have already failed before I got my hands on them. Mostly they use existing guides which even ex-factory are beyond tolerance. The customers always have the option of replacing the guides but arent always prepared to stump up the cash.
The broken guide is on a head you prepared, since you used a hammer and a drift to drift back the guides I have had several guides with undetectable cracks that have subsequently failed.
Ah yes, the forged pistons that were so bad that you…
a) Tried to flog them to some unsuspecting person in Hong Kong as ‘new’ after spinning some yarn about ‘polishing’ them (to remove the marks on them and try to make them look new). You are full of it. Full details on Seloc, including photos of ‘new’ pistons.
b) got rumbled and decided not to try that again
Who said anything about cross drilling at 90 degrees to the xisting cross drilling? are you mad? If you read my post I said that the modifications would depend on what was already there…
Even with transfer grooves in upper and lower shells you will see fluctuations in delivered pressure at the crankpin if you have a single main bearing drilling as it moves diametrically away from the supply holes. Cross drilling will ensure that at least one supply hole is kept close to the delivered supply at all crank positions. This is relevant for whatever the internal drillings might be. With a single transfer groove cross drilling is essential or the supply is cut off for 50% of the rotation.
Dave