Looking for ATI harmonic balancer users

[gnosez]

The first photo is of the internal scoring on the dampener. There was no marks on the snout of the crankshaft and the machine shop was of the opinion that the damage was caused during the installation process.

The second shows how a three day race in the pouring rain can result in some serious surface rust.

[AK260]

Wow!!!! That is a very poor show for a high end object of desire.

Maybe BHJ made it that way as a "feature" for it to feel at home in a Datsun! ;)

Will you be sending it back to BHJ?

[gnosez]

It will be going back as soon as I have some free time. The concept that you need to some how keep it from rusting is nuts. Bare metal that is exposed to the elements with no thought on some form of protection. I sprayed it with oil before and after running in the wet.

[Jeff G 78]

Wow, that’s disappointing. I guess I will try to clear lacquer mine before I run it. 

[240260280]

Looks like Mainland Chinese steel steal

[gnosez]

So the ATI dampener requires a crank bolt longer than stock so off to Bel-Metric I go to get a 16 x 1.5 x 50mm Grade 10.9 bolt. We used a similar bolt on the last race engine without issue.

Now I'm waiting on some very short valve seals. The stock ones would have been hit due to a very aggressive cam.