Dec. '09 p.13 Honda Performance Development ad. There's a picture of an engine that has me baffled in the upper right corner. I assume it's some esoteric racing engine with which I have zero experience. It appears to have very specialized head studs, and the deck surface has big recesses down to the top of the cylinder bores. The recesses continue between adjacent cylinder walls, and the recesses have radii on them that make it hard for me to picture how this works. I can't see individual sleeves fitting in here and sealing properly, nor do I see a bank of sleeves as feasible. What am I missing and how does this work?
TIA
Honda Performance Development has the same image on the top of it's website here: http://racing.honda.com/hpd/
I'm still scratching my head on this.
the Acura LMP car uses a V8 as well don't they? I think it is actually based on the Indy block. I could be wrong though.
I guess I was over thinking the radiuses. I found the following link: http://www.cdpautomachine.com/ecatalog/aebs_sleeves.html
Different engine, and coolant passage requirements, but apparently mating perfectly to those radii doesn't matter. Interesting.
While researching your post I found THIS:
http://bringatrailer.com/2009/07/30/ready-for-lift-off-1962-4-cam-falcon/
BTW to answer your question, the block is usually "stepped" like that in order to secure the wet cylinder sleeves. It makes it so the sleeve does not ride down or turn in the block while running.
Yeah, that machining looks perfectly normal for a honda block.
Andrew
http://hondaracinghpd.blogspot.com/2009/07/honda-performance-development-inc_20.html
