Re: Some details of the 2AZ-FE engine

Built_Well wrote:
> Ray O wrote:
>> Some older Toyota engines (and current domestic engines) have
>> a single overhead cam, or SOHC.
> ========
> 
> Single overhead cam (SOHC)!!!!  Well, I guess that's better
> than using pushrods and rollers.

Dumb statement.

V-configuration pushrod engines can be significantly more compact than 
OHC designs because the cam is tucked between the banks rather than 
having a cam hanging out over the bank making the "V" both taller and 
wider. Plus the cam timing wanders less because the chain is shorter. 
And when there are other engine architecture considerations that make it 
unnecessary to wind them tighter than 6000 RPM, overhead cams don't have 
  any advantage. That's why so many pushrod engines, ranging from 
pedestrian GM v8s and v6 to the Corvette ZO-6 and Chrysler SRT-8 Hemis 
are still being designed and built.