TheMiniMan wrote:
simon k wrote:
all the big power engines in UK use A+ blocks.... shouldn't make a scrap of difference
hee hee,,, they use them simply because they stuffed & sold & ruined & thrashed all the early ones they had & hardly have any early strong ones left now
so of course they`re going to use A+ blocks for their race engines,,, they have no choice
& yes , if an A+ """isn`t""" sleaved,,, then it probably should be
Yeah I used to say that too, and I agree, in my experience maaany of the earlier A+ castings were porus (heads and blocks) and the quality of the casting was pretty poor over all....
Having said that,,, I have recently done machining on a whole lot of late A+ stuff (1995 onwards) and I would actually stick my neck out and say if anything, the quallity of the casting in the later stuff is probably actually
better than the A series stuff
I can't honestly complain about porousity or core shift in the late stuff I've just been working on.
The heads in particular (casting methods aside), they would have been expensive to produce, there was a lot more machining operations in them I noticed......
I don't know specifically when they started improving, or even if stuff I've been working on were just all "wednesday castings", but I do know I'm not as quick to dismiss the A+ stuff anymore (not that I ever really did anyway, but ya know what I mean)
