cav551:
[zb]
anorak:
Chain or gear driven DOHC is the ultimate solution for cars. Ask anyone who works, or has worked, in engine design.Transverse engines are used in cars, for the obvious reasons. Ask anyone with knowledge of manufacturing.
Japanese knotweed.
Far from it, viz the Ford chain driven abortion - introduces leaks from the timing cover and the wonderful idea of a timing chain tensioner dependent upon oil pressure. Many an owner been caught out bump starting the engine to find that without oil pressure the chain jumps a tooth and bang, wrecked engine…
These caveats, are widespread, I find, having had a look around the motor mechanics forums. It seems that, in the rush from belt to chain, the modern-day designers cocked up the tensioner design. I’ve seen the nylon rubbing strips, and thought they looked a bit dodgy- what’s wrong with an idler sprocket on a lever with a spring, possibly backed up by oil pressure at higher RPMs? I don’t think a few pence cost saving is much of an argument, when big warranty claims are the consequence. Bad chain drive design comes under the category “Avoidable ■■■■-ups”, IMO. It’s not exactly new technology.
