cam spauling: Can I run this?

[falcongeorge]

I have this roller cam I want to run it my street driven 327, its 262/266@050 .645 gross. 1.5 rockers, springs are 200 on the seat, 435 over the nose, steel 2.02sx1.60s, steel retainers and I am running a rev kit. It sees 7500 rpm. There is some spauling on one lobe, can I run this? Or repair? Grind out the damage, tig the pit, and get one lobe reground? I like this cam and budget is an issue. Thoughts?

[williamsmotowerx]

Can't run that on a roller. For just a drag car it will last a little while, but destroy roller.

Is it custom ground or off the shelf.

Can be welded and ground depending on material. But that lobe will be slightly different

[Keith Morganstein]

That belongs in the scrap bin.

[statsystems]

You also don't have enough spring pressure. That cam is a core.

[falcongeorge]

Can't run that on a roller. For just a drag car it will last a little while, but destroy roller.

Is it custom ground or off the shelf.

Can be welded and ground depending on material. But that lobe will be slightly different

Thanks, I think that is what I will try. Grind the pit out with a small bit in my Foredom, tig it up, and take to my local cam guy and get the lobe reground. The base circle will be a little smaller, but I don't see that as a big hairy deal. @statsystems, how much spring do you think I need?

[CamKing]

Can't run that on a roller. For just a drag car it will last a little while, but destroy roller.

Is it custom ground or off the shelf.

Can be welded and ground depending on material. But that lobe will be slightly different

Thanks, I think that is what I will try. Grind the pit out with a small bit in my Foredom, tig it up, and take to my local cam guy and get the lobe reground. The base circle will be a little smaller, but I don't see that as a big hairy deal. @statsystems, how much spring do you think I need?

If the surrounding area of the lobe gets too hot, you will be annealing that area, and you will have more issues.

[GARY C]

Can't run that on a roller. For just a drag car it will last a little while, but destroy roller.

Is it custom ground or off the shelf.

Can be welded and ground depending on material. But that lobe will be slightly different

Thanks, I think that is what I will try. Grind the pit out with a small bit in my Foredom, tig it up, and take to my local cam guy and get the lobe reground. The base circle will be a little smaller, but I don't see that as a big hairy deal. @statsystems, how much spring do you think I need?

If the surrounding area of the lobe gets too hot, you will be annealing that area, and you will have more issues.

Can that be ground out?
It looks big for the engine combo anyway.

[rp930]

Toast

[modok]

It might run forever like that, or it might not.....I don't know.
But if you weld it, I think it will fail for sure.

[CamKing]

Can that be ground out?
It looks big for the engine combo anyway.

No. The reason it pitted, is because they ground too much of the heat treat away. The hardened face, is too thin, and the softer backing material has given way, so the hard face cracks and flakes off.

[falcongeorge]

a follow up, I sent the same set of pics to Marco, at Shadbolts, the cam grinder that I usually deal with on stuff like this, he says "no problem, we fix this all the time, tig it up and we will re-grind the lobe". So I guess we will see what happens.