variocam on non variocam engine

[svandamme]

has anybody seen this guy

http://www.928sg.com/heads.htm

he took a 928 , and wacked on 968 heads, with Variocam on it


just an idea, but , how feasable would it be to wack on 911 Variocam heads on an older engine?

- more low end torque
- no more valve adjustments

dunno what else comes into play on this... anybody else has an idea? what kind and amount of improvements to expect?

[KobaltBlau]

um, not feasible. 996 heads on air cooled bottom would be really super hard. GT3 heads and cylinders on an air cooled case would probably be feasible (definitely with 964+ case), but then you have a GT3 engine anyway.

956 heads on our engines would also be possible (not variocam), but $$$

in all cases you need water cooling in the car.

I guess the question is, why would you want to?

Note that the 928 and 944/968 engines share many parts, not the same relationship as 911/996.

[svandamme]

didn't 993's have variocam as well??
those are still aircooled

don't know about size of heads or anything else though

why would i want to? dunno , just theorizing about what can or can't be done , not even sure if i'de ever do it...

maybe the advantage of vario cam is just 1% more torque
dunno .. there must be some use for the design if they keep using it on the new cars?

[SpeedracerIndy]

993s have varioRAM, not varioCAM.

[911pcars]

It would take some enterprising and inventive person to add a mechanism onto the sprocket end of the cam to automatically advance/retard the timing. I think it's been done on 924/944 engines (?) and several domestic big blocks.

Variocam though is variable lift too. That would require some nifty re-engineering of the rocker arm/cam housing and camshaft lobes.

Sherwood

[KobaltBlau]

Originally posted by svandamme
why would i want to? dunno , just theorizing about what can or can't be done , not even sure if i'de ever do it...

Sorry, I didn't mean to sound disparaging; I like all kinds of different ideas. It's just that between an air cooled engine and a non-GT3 engine like _nothing_ would line up.

WRT to the variocam there is lots you can do with an air cooled motor that does more for power/torque. the new motors have the old ones beat on power/economy etc but what are you gonna do?

[KobaltBlau]

I just read the site and he actually modified his 928 heads to take a 968 variocam cam-to-cam chain tensioner. Just want to be clear so others don't think you can slap 2 968 heads on a 928 (well, maybe you can, but this guy didn't).