Knock, Knock, Whos There? Help!

[deathraider6996]

Grinding the crank just means that they need to be cleaned up to get a good surface for the bearings to ride on.  You can bet on at least a .010 over sized bearing, possibly a bit bigger depending on how much material has to be removed.

Builder say maybe even. 020. I hope not. I would have to replace it down the road if I were to put some serious power down.



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[deathraider6996]

It seems we often get sold things that are imaginary when we look.  All we can do is remember and not make the same mistake twice   I have a few of those t shirts.

Should be really nice when you get thru!

I'm really hoping so Steve. I hope I've made the correct decisions thus far. I'm probably going to take a week off when I get the motor back and dedicate my time to it.

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[deathraider6996]

Stumbled upon someone on facebook who is going to try these out. Kind of cool and can't beat the price. Wonder if it would wreak havoc on the knock sensor.

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[deathraider6996]

Is there anything special about knock sensors where I should pay 40ish from caspers compared to less than 20 at autozone or even an acdelco unit?

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[Steve Wood]

no....caspers is selling NOS sensors, I think... whereas the current stuff is supposed to be the same as the old...hopefull y it is.  Why are you replacing yours?

[deathraider6996]

no....caspers is selling NOS sensors, I think... whereas the current stuff is supposed to be the same as the old...hopefull y it is.  Why are you replacing yours?

I don't want to leave a fresh rebuild in the hands of a old knock sensor. Do you happen to have the part number?

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[Steve Wood]

Some times, I think I have more faith in the original parts than I do in the current production that is supposed to be exactly the same except made overseas  ?

Original number was 10456287   

[deathraider6996]

Some times, I think I have more faith in the original parts than I do in the current production that is supposed to be exactly the same except made overseas  ?

Original number was 10456287

I'll do a little research then.

I know there was a possibility of the crank sensor being bad. Where can I find a good one of those?

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[Steve Wood]

Don't think it was bad. Might have not been adjusted correctly. On the other hand, I suspect the crank was moving around and that was the root source. Crank sensors tend to be good or bad so look for a good price. Keep your old one for back up

[deathraider6996]

Should I have brought my heads up to the builder? Don't they have to machine the mating surface to ensure proper seal around the head gaskets?

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[Steve Wood]

They probably need a clean up skim to be sure they are flat as well as having the guides checked and maybe a valve job.   So yes

[daveismissing]

The standard auto crank sensor is good, Highway Stars if nowhere else.

[Scoobum]

I call bullshit on not being able to put down 'serious' power with a ground crank. Grumpy cracked the 9's on a 20/30 crank and I ran for 3 seasons every weekend well into the 11's with a 20/30 crank. I still have that rotating assembly here...and wouldn't think twice of putting it back into service after having it magnafluxed.

[Steve Wood]

Billy Anderson has said he would run a 30/30 any day....

[TexasT]

I don't think people put the thought into just how small .030 of an inch is. If it has rolled fillets, I'd run it.