Not wanting to argue with you Dodgeman, but here is a "quiet" cam drive with spur gears. Not all quiet drives are helical. This one's a Pete Jackson, Cloyes makes one too. I imagine Edelbrock and Comp Cams have their own too but I haven't looked for a gear drive in several yeares.

http://store.summitracing.com/default ... &N=0&target=egnsearch.asp

To be clear, you can't necessarily tell if a gear drive will be noisy just by looking at it.

Helical cut = quiet + end thrust
Straight cut = Noise + no end thrust

Chains impart no end thrust & straight cut gears replicate this condition but make noise which is magnified by the idler gear as there are now two places where this noise is now generated.

Engines that were designed with gear drives in the first place make provision for end thrust, they use quieter, helical cut gears, & they use a steel crank gear & cam gear of a softer material [resin/ fiber was common] & they used two gears only.
This resulted in a positive drive, no noise, reliable operation & reasonable cost due to the reduction in the number of parts needed.

This aftermarket set for Datsun A series would be really good on a competition engine, if only it was affordable.

Dodgeman, Chevrolet gear drives are available quiet or noisy. I don't know which category the Datsun gear drive in question is. Regardless, it's way out of my price range.

The whine is still better than any whinging woman.

I don't count this car as a long distance cruiser so I'd be happy with the whine.
2.1km per lap. 3 timed laps per go ...... plus warm up and cool down laps... I could live with that.

A friend has a gear drive in his 350 Chevalay engine & it sounds like a blower whine. Noisy bloody thing it is too & one gets heartily sick of it after a while.
Good for racers, but not for long distance cruisers.

$970 aussie at the moment.

Quote:

How much was it?

Thanx guys for the uploads I cant do it on this jap pc im using at my inlaws. However a great addition to any a series however not at that price when Chev and ford ones are nearly a quarter of that price.a
Also a harmonic balancer for the A series was sold on the Auctions but didnt get a chance to get the link.
Also the headlights not in the blue but clear look quite good on old cars. Ive only seen them on old corollas and gtrs in Mainland last I was there and been really after some specially as found on the new motorbikes. They look like a myriad of diamonds or a finely cut diamond on each headlight.

Pricey....... but I'd like one
I did try to make something similar years ago but didn't work.

Gear drive I mean.