Low tension ring?

[88bluestar]

Ordered a 320 BRM brush.

[88bluestar]

Ball hone I mean.

[88bluestar]

Should I follow it up with a 400 grit, or finer?
or is that 320 ball hone enough?

[1972ho]

I’ve used 320 ball hone on steel and moly rings and still haven’t had any problems with the rings not sealing it just would take a few more passes 2or3 to get the leak down better.

[88bluestar]

After the 320 honing.

[88bluestar]

Pics loaded in backwards, so the one at the top is number 8,6,4,2. 7/5/3/1

1/3/4 being the worst as far as gouges

[88bluestar]

Is it possible to clock the rings so the gouges aren't an issue?
Fingernail catches but they are very small gouges in thickness, not wide.

[allencr267]

...clock the rings...

They're gonna move anyway, though maybe not too much with that 0 to 10 degree hone and those gouges to guide them, amazing how well some run even with wrist pin gouges.
Radius the ends, lightly.
Hope for the best.
////
Also, clean up fire ring around cyl.

[88bluestar]

Pistons when measured were .022 in the hole. Mag told me about that issue on the oil rings etc, definitely something I have to get done.

[rebelyell]

Seems it's already +40 over and just got ball-honed; but that hasn't cleaned it up very well.
In the long run, me thinks another block might be a practical fix.

[88bluestar]

Better pics, more light. 1&4 in the pics. I’m on a budget, so I’m debating on what to do.

[steve cowan]

The problem that usually occurs with a out of round bore using low tension oil ring is it will push alot of oil into catch can.
Measuring with a dial bore gauge doesn't tell the whole story.
I would bolt cylinder head to block, sit in a 2nd ring at desired gap and shine a light from behind the ring and see how it looks.
You can use a standard tension oil ring which might be a better option.

[Old School]

The problem that usually occurs with a out of round bore using low tension oil ring is it will push alot of oil into catch can.
Measuring with a dial bore gauge doesn't tell the whole story.
I would bolt cylinder head to block, sit in a 2nd ring at desired gap and shine a light from behind the ring and see how it looks.
You can use a standard tension oil ring which might be a better option.

I agree. I would run the ball hone a few more passes with faster up and down motion to put more crosshatch in it. If this is a street engine I would definitely use a standard tension oil ring. You will have oil consumption with a low tension ring on the street.

[rebelyell]

viewtopic.php?t=66923

in the above thread, it seems this 383+ sbc motor is in a 3200 pound dirt track race car

Perhaps OP 88bluestar will clarify if this is same motor?

[88bluestar]

viewtopic.php?t=66923

in the above thread, it seems this 383+ sbc motor is in a 3200 pound dirt track race car

Perhaps OP 88bluestar will clarify if this is same motor?

This is an engine I was planning to build. Depending how this block turns out with the bore issue I may have to wait off doing the 383 for a while and use the other block. Just trying to get as much info together since I've never done a 383.