Harmonic Balancer Adapter

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Warrenm:

--- Quote from: enginenut on December 11, 2011, 08:34:20 PM ---No David they don't make an 'adapter' for this application but they do make several balancers which is why i asked. I have built several of these engines and have always found the ones availible in Australia to be sufficent. Warrenm is it a red, blue or black ?? Red i can understand adapting a larger balancer but I usually retro fit a blue crank due to them having better counterweights. Also if your going the supercharged route fit a second key to the crank

:ddb:

--- End quote ---
Red motor blue crank. No it's not supercharged, it's has 3x 2" SU's.

Pete49:
Also a good way to get onto the lathe. Maybe a reason is he wants to do it :doh: Some people like me go for the challenge rather than the wallet though in my case it would be for the learning involved :smart:
Pete

enginenut:
sounds like nice little Torrie or EK EH project they go well with a hot red in them

Warrenm:
The engine is in a 1972 LJ Torana. It runs 12.62 on the 1/4 mile.
I've now parted the adapter of & turned it around in the chuck so that I can finish the other side.
Just need to broach the key way & drill & tap some holes to bolt the balancer to.

Warrenm:
Bit of an update to my small project.
Using a transfer punch, I marked the mounting holes. I didn't take any pics in the drill, then tapped the threads, 3x 3/8" UNC & 6X 5/16" UNC.

Now I need to visit my good mate & use his broach to cut the 3/16" key way.
This the std balancer (2.5lbs)& the Super Damper(8.5lbs) for comparison.

I then machined a .060" shim from brass, I'm not sure what this does, but was told some years ago when fitting a larger balancer to these cranks to use a .050"-.060" brass shim, as the cranks have a habit of breaking with the extra weight & this helped to stop it. Maybe some one may have an opinion on this subject.

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