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Poll

Can you turn a Honda crank?

Yes
- 38 (57.6%)
No
- 28 (42.4%)

Total Members Voted: 63


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Author Topic: Honda knowledge poll #1  (Read 7532 times)

d-rail

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Re: Honda knowledge poll #1
« Reply #30 on: March 16, 2010, 06:41:15 AM »

The answer is no because honda journals are irregular and inconsistant so if you turn all the journals down to equal you have a nasty mess on your hands if you freshen up all journals including the smallest of the group which generally has the most wear since it has the least amount of area for the bearing to travel on
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snm95ls

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Re: Honda knowledge poll #1
« Reply #31 on: March 16, 2010, 09:33:07 AM »

The answer is no because honda journals are irregular and inconsistant so if you turn all the journals down to equal you have a nasty mess on your hands if you freshen up all journals including the smallest of the group which generally has the most wear since it has the least amount of area for the bearing to travel on

Nigga what?

The only reason why Honda bearings are setup the way they are is to keep clearances consistent when machining tolerances are not.

Running a set of aftermarket bearings like ACLs is equivalent to running the same middle of the road bearing shell size on all journals.

Passenger

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Re: Honda knowledge poll #1
« Reply #32 on: March 16, 2010, 12:00:39 PM »

Turning a Honda crank? Why?

Ever have trouble finding one that didn't need it?

Regardless, you can turn a nitrided crank just fine, but you should re nitride it afterwards, we did this often when I worked for MB.

Once again you're incorrect.

 ::)
You don't turn a crank unless you are removing a significant amount of material, like more than .008", especially anything hardened. You won't be able to hold any sort of tolerance, not to mention you will just have to redo your setup on a crank grinder anyways so you might as well just grind it.

And no I am not incorrect Joseph, you need to keep in mind I actually do this kind of stuff, you only read about it. Parts can be, and have been for years, re nitrided, from automotive cams and cranks, to industrial cylinders, shafts and pistons.
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buk9tp

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Re: Honda knowledge poll #1
« Reply #33 on: March 16, 2010, 12:22:59 PM »

No you should stop being poor and go buy a new car with a warranty.
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Joseph Davis

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Re: Honda knowledge poll #1
« Reply #34 on: March 16, 2010, 02:25:00 PM »

Turning a Honda crank? Why?

Ever have trouble finding one that didn't need it?

Regardless, you can turn a nitrided crank just fine, but you should re nitride it afterwards, we did this often when I worked for MB.

Once again you're incorrect.

 ::)
You don't turn a crank unless you are removing a significant amount of material, like more than .008", especially anything hardened. You won't be able to hold any sort of tolerance, not to mention you will just have to redo your setup on a crank grinder anyways so you might as well just grind it.

And no I am not incorrect Joseph, you need to keep in mind I actually do this kind of stuff, you only read about it. Parts can be, and have been for years, re nitrided, from automotive cams and cranks, to industrial cylinders, shafts and pistons.

Seeing as how bearings are sold in undersized increments of 0.010" what's your point?

Mine was you don't have to re-harden the crankshaft afterwards.

AMkrew

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Re: Honda knowledge poll #1
« Reply #35 on: March 17, 2010, 02:11:31 AM »

Yes they can.

Plenty of manufacturers make crankshafts that are not nitrided.  They're turned all the time.  Simply because the material is soft(er) doesn't mean it will not work.  Take a look at bearing material.  The material on the top layer is much, MUCH softer than the material hiding underneath the nitrided layer.  The key is to get the right finish on the crankshaft.

HOWEVER...  They shouldn't unless the plugs are removed from the cross drilled passageways.  There, abrasive particles will hide until you go to the track the next city over, with a new setup, and are hoping to hit 11's.  Then, they'll come out to play, and you'll be mad and break up with your girlfriend...

Holy crap.  JD made me ponder for a second...  With the softer material underneath, and the significant timing advance in most of these motors, will the force of the rod hammering on the crank wear it *unusually* faster if it WERE reground?  I'm thinking of the rod journals, here...  Mains would certainly be fine.

No, I've reconsidered my opinion.  It's fine with the precautions above.

The human torch was denied a bank loan.
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crttaz

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Re: Honda knowledge poll #1
« Reply #36 on: March 17, 2010, 02:46:32 AM »

before the journals would wear, the crank will twist and flex, like a big spring.
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Phate

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Re: Honda knowledge poll #1
« Reply #37 on: March 17, 2010, 02:53:04 AM »

before the journals would wear, the crank will twist and flex, like a big spring.

They had this problem in the old inline-8 cylinder motors.  Crank is simply too long.
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