if i'm not mistaken i believe the owners manual says 1 quart per 600 miles is okay.

 

No, you would be mistaken. Its 1000.

I actually took Honda up on it with a motor that was drinking 1Q every 800 miles. They tore down the motor and found what looked like some kind of casting cracks in the cylinder bores and chalked it up as manufacturing flaws so they replaced the short block under the extended Honda care warrantee I had at the time.

 

how much honing is needed? We talking ball hone or rigid hone with all the steps?

 

+1

 

When I built my F24 in my garage I took a complete long block down to every component and re-ringed the pistons that went into the same bore they had always been in. When I measured ring gaps in 3 places along the cylinder I had some taper but all I did was use a Wiseco nylon hone to prep the bores and used the 06+ piston rings. Car had no smoke/oil consumption problems up for 2 seasons until the point I went from 5 to 2nd at 100 mph at T1 in Sebring

 

Can you describe the process a little more? (stroke speed, how many passes etc etc). I have seen your F24 build thread but this info was not clear. Thanks!

 

1400 rpm drill, 10 passes per bore. used ATF fluid, dosed the hone every 5 passes

my numbers sheet

https://www.s2ki.com/forums/automoti.../#post23886766

my worst bore taper was 0.015 inch at the bottom to 0.011 inch at the top

 

 

So, did you manage to replace the rings?

 

My recent F24 build burns zero oil on unprepped cylinder walls and NPR chrome faced piston rings with good compression on PZX pistons. The repair manual doesn't ask you to rehone unless there are scratches or damage. I would re-ring that engine and hopefully the out-of-round condition isn't severe enough to negate the benefits of re-ringing.