Wider if you'll abuse it now and then. Narrower for a tame cruiser.

Do they give only that one range? Some manufacturers ofter different ranges depending on the type or use of the engine.


Lawrenceville, GA

That makes sense. Any idea weither it is any better to go on the tight or wide end of their range?

I'd go with the ring manufacturers suggestion. They know their rings best.


Lawrenceville, GA

The rings came in from Grant today. Stuck a top ring into the bore to see what I had. About .009 end gap. According to the instructions that came with the rings I should have .003 to .004 per inch of cylinder diameter. That comes out to .0115 to .0153 as near as I can figure. My Ford Shop Manual says .012 to .029 with a standard bore. I am thinking somewhere in the middle of those numbers should be fine. Should be a lot better than the .050 I had with .040 over rings. It should be no problem to get the clearance right with a little careful fileing. What exact gap would the experts here recomend?

Thanks for looking. Hopefully I won't need them. Should get rings next week. Will let you know how they work out.

Slumlord:

Found a .060 ring, but see you no longer need it.  Also found a set of used .060 pistons that appear to be low mileage, but obviously you won't need them either.  Glad you found the rings you need.

John - "The Hoosier Hurricane"

Trust me, I do realize that boring to .060 may have been the solution. I never thought about used pistons. Good idea.

I actualy found a set of rings today. With all the info and help that is available on line, we sometimes forget that low tech sometimes works better. I had e-mailed several ring manufacturers including Grant, and all said they could not help me. Just for the heck of it I decided to call Grant Rings today. Talked to a nice Tech guy who was actualy in the plant when I called. Had a bit of an accent but knew exactly what I was talking about and took all my info on bore size and ring dimensions. Came up with a set of .050 over rings in cast or chrome. $120 for chrome direct from them but a lot cheaper than a re- bore and new pistons. Bore is 3.847 so filing 3.850 rings to fit should be no problem. What I am prety sure he did was to look up invidual rings by dimension and basicly build a set from the different standard applications that they had. I was able to find the correct size rings on their web site but one set had the right top ring and the correct oil ring but the wrong second ring. He just pieced it together. No problem. Love this guy!

Thanks to all for your suggestions. Maybe this info will help someone else in the future

I agree. If you can't afford to do it right now, then you can't afford to do it again. It really is time for the next oversize if you want to do it right.


Lawrenceville, GA

if your worried about cost why dont you look for a used set of .060 pistons.a bore job is not that much.thats if your block will clean up at .060.the way your going you will probly end with a fair engine at best.

Slumlord:

I probably have a used .060 ring somewhere, if I can identify it.  I'll look. 

John - "The Hoosier Hurricane"