huge230

Is this correct? No hone on the H22 unless there are scratches basically?


Honing FRM sleeves.... Service Bulletin SB618958 #18939 « » 12:01 AM 2/4/2003 Reply Edit

This is for anyone doing a rebuild and needs the info. I ordered this from the NHTSA and got it nearly a year later. After I had to fix the first honing that was done on my block. This info would be good to bring to a machine shop so that they know what there dealing with. Honing process is important so if u need to do it, do it right. This is word for word. Hope its of use.

SB618958 #18939

1990-2001 Prelude – Honing Fiber Reinforced Metal (FRM) cylinders 2000-01 S2000

All S2000 and 1990 and later VTEC and SI Preludes have Fiber-Reinforced Metal (FRM) cylinder liners. FRM honing is not required unless the cylinder has deep vertical scratches that run the length of the bore. Cylinders with light colored spots or flaking cannot be corrected by honing and must be replaced.

To hone FRM liners, perform the following:
· Use a rigid hone (not a ball hone) with GC-600-J or finer stones for nonferrous
metals. The honing pressure should be 200-300 kPa (2-3 kg-cm2, 29-43 psi).
· Use an oil type honing oil.
· Hone at 45-50 rpm to a 60 degree-crosshatch pattern.
· Do not stroke the hone more than 20 cycles.
· After honing, thoroughly clean the engine block of all metal particles by
washing with hot soapy water, then dry and oil them immediately. Never use
solvent; it will only redistribute the grit.
· Some light vertical scoring and scratching is acceptable if it isn’t deep enough


From this thread below

https://honda-tech.com/zerothread?id=405266

huge230

nobody knows?