Leyland 0.500 series

railstaff:

gingerfold:
Good post Roy and it makes your point ve

Superb post,goes to show that with single heads how busier the deck of the block would be.As shown in them excellent pictures the clamping devise of one cylinder is also the clamping devise of the one next to as against singles were they all require their own clamping devises.But to be fair one area were single heads excel is to compensate for a low liner if you can call that correct in the first place.

Couldn’t that also make the case that the clamping effort on a cylinder on the compression or firing stroke where it needs all the clamping force it can get is being reduced by sharing it with the cylinder next to it ?.While any premise in favour of a one piece head over seperate heads would have taken out Mercedes long ago.IE the extra bolt spacing requirement isn’t exactly a major issue.

file.seekpart.com/productsimage/ … 494494.jpg

Which then leaves the question of the N14’s three seperate twinned heads.