deck plate for boring- honing

[KDancy]

I have called every machine shop near where I live and none of them bore or hone using a deck plate on the 5. 9.

Does anyone have one I can rent for the job? I am working on a 2004. 5 that needs #6 honed, maybe sleeved and new piston and rings.

I looked at the info here--

YouTube - CYLINDER DISTORTION AND DECK PLATE HONING ON CUMMINS 5. 9

 

[rbattelle]

Are you trying to rent the deck plate, or the entire honing machine?

-Ryan

 

[KDancy]

Just the deck plate.

 

[champspa]

looks like your going to have to make one or have a cummins re-builder do your work. Can't really blame them for not letting you use it ( if they have one).

 

[KDancy]

I haven't found a cummins rebuilder that even uses one when they do the boring. I am think about getting a used head and making one up from that.

 

[MChrist]

I've seen that video before and it's quite surprising!! If I was to have my cylinders honed, I would want to find a shop that uses a deck plate like the one shown. Shocking to see light pressure distorting a block that much!!

 

[MChrist]

It looks like a pretty thick deck plate in the video. I wonder what the results would be if you just used 3/8" or 1/2" plate, cut out the cylinder bores with a hole saw or plasma and torqued everything down? It's gotta be better than nothing, I would think.

 

[RCorbeil]

I think the plate should be about 1. 5 inch thick and blanchard ground after the bores had been machined in it. Also the material should be the range of QT 360 or better. NO cutting on this so there is distortion.



Ron

 

[rbattelle]

I am think about getting a used head and making one up from that.

That was going to be my suggestion. Does the manual for your honing machine make any mention of deck plates? I figure the manufacturer might have some advice about it.

I think the plate should be about 1. 5 inch thick and blanchard ground after the bores had been machined in it. Also the material should be the range of QT 360 or better. NO cutting on this so there is distortion

Ron sounds like he knows what he's talking about. The deck plate has got to be not only strong, but rather precise! Otherwise, you're just distorting the cylinders with your deck plate and then honing them according to that pattern.

-Ryan

 

[KcoleKennyc]

I haved bored and honed several of these blocks without a plate but the plate would make it better. Have 2 pieces of steel to make some plates. Priced one from BHJ, I know why you are having a problem finding one. Believe they were about $1200, don't think that included shipping. Should not be a problem to bore the holes for the bolts but don't know how to bore the big holes for the cylinders.

 

[RCorbeil]

Can all be done on a vertical mill or a jig bore. For a good tool shop it would be no problem.



Ron

 

[MChrist]

When I watched the video, it seems to me the only distortion was from not having the bolts torqued. Using the deck plate merely loaded the bolts. That is where the distortion took place. My comment about using a 1/2" steel plate with your own drilled holes is still better than no plate at all. 1/2" plate is much more readily available than 1 1/2" plate!!

 

[PWirth]

It would probably make sense to find a waterjet guy if you were going to make it from 1. 5" plate. You can cut all of the holes you would need very easily with the waterjet, even in hardened steel. It also doesn't distort as bad because there is no heat in the process.