To hell with these gapless rings...need sources for normal rings
Where can I get a GOOD set of conventional rings for a stock bore 346? I'm running OEM pistons
TIA <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Mikey
I know its coming from the valve seals/guides....I've pulled the intake 2 times and oil is sitting on the intake valves <img border="0" title="" alt="[Sad]" src="gr_sad.gif" /> (a teaspoon's worth). Reversion is causing it to cover the whole intake port. Intake itself is pretty much dry (some film but no oil pooling)
smokes only while idling. doesn't seem to do it at part throttle or at WOT (verified this on the dyno when people were watching it)
I'll catch up with you after OC and I'll get a set from you and try them <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
<small>[ October 10, 2002, 06:53 AM: Message edited by: Fireball ]</small>
Thanks,
Chris Gelineau
Diamod Pistons
877-552-2112 toll free
Maybe a slightly weak seal with all the vacuum you are pulling with those gapless rings is making the problem worse? Is it on all the valves or just one or two?
Chris
I'd run a good file fitted from Speed Pro with your setup if u do go to a different ring..
JS
<small>[ October 10, 2002, 09:36 AM: Message edited by: JS ]</small>
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Oil sitting on the valve.Strangest thing I ever saw.
I replaced ALL the seals and it did not do a damn thing to help.
I pulled the motor because of it.
The gapless rings require a VERY tight valve guide clearance and do suffer from some odd issues.
Don't like them and would never use them again.
Steve
The Best V8 Stories One Small Block at Time
I *think* i evened warned SJH about it a while back when i noticed he was using them in his motor and he responded once about them working very good for a while, then after some miles again they started to have issues.
I've heard this from quite a few people.
i run speed-pro plasma moly rings
The gapless 2nd ring also totally contradicts present 2nd ring gapping theory.
Anyhow, I now run conventional rings. .026" top and .028 2nd(supercharged).
No oil control issues at all, same intake manifold vacuum as I had with the gapless rings and no blowby issues either.
It was a learning experience.
Steve
'JS' and 'Mikey' are right on with they're call. Dump the gapless rings, get the Teflon PC seals installed and have your machinist check your valve stem to guide oil clearances. If they are too wide replace them with stock GM or similar iron guides. There's no need IMO to run a bronze guide in a street car. They wear faster and pull alot more oil when when the engine is cold. Also if you've machined your heads it might be wise to have your intake manifold angle milled for a closer port match. You may have a weak, poorly sealing intake gasket causing the oil puddling.
Here is my two cents. I was talking with you before on this matter. I was having the same oil on the valve problem. My whole motor was rebuilt with stock crank, after market rods and JE pistons and JE rings. When I would pull the intake off oil would be sitting on the valve like you said. One of my worst was the number two cylinder. Now remember that I had new bronze guides and seal put on. I started to blame this broblem on the rings cuz I was killing plugs every three weeks.
So I did a test. I bought some Viton guide seals and just replaced the seals on the number two cylinder first to see if that was the problem. I ran the car for three weeks just like the other seals and my plugs were PERFECT. My engine builders also said he rebuilt a truck motor that had the same problem and he changed out the new seals with viton seals and the truck runs great.
These motors pull a ton of vaccum and it goes right by the guide, but the VITON seals I put on work. Try them, you won't be let down. I also talked to total seal back when my motor was being built and they said due to the design of their ring, the motors pull even more vaccum then normal rings. I have pictures of my old seals and the what the plugs look like before and after.
Something else to think about is I have bronze guides and if the do let more oil by, they also must let more vaccum by so the first set of new seal I put on couldn't cut it and the Viton seals can.
Let me know how it goes. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Glenn
Wow, that is wierd. They cured it for me <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> Oh well hopefully you get it figured out Brain.
Good luck,
Glenn
Glenn
<small>[ October 10, 2002, 03:09 PM: Message edited by: 4mulaJoe ]</small>
i'll try that myself before upending the longblock... are never even told me what rings i have, just that they have 50% more gap than stock and would definitely use more oil than a stock ring set.





