I need an oil ring for a 331 engine with the ,030 Over pistons. I just need to do one cylinder, as the engine was totally rebuilt about 10 years ago. The cylinder has good compression...and the spark plug is firing, but the spark plug is getting oily as compared to the other cylinders where the plugs are bone dry. Also getting a hissing noise from that cylinder leading me to believe I have a bad oil ring . Am getting some oil burning off of the drivers side( where that cylinder is)...when driving on the road, and the engine is hot , especially when you take your foot off of the gas pedal.....going about 60 MPH..
If anyone can point me to who may have the 030 piston rings, it would be greatly appreciated, or better yet, a sealed power part number..............I really only need to do the one cylinder................if someone out there has just the 3 ring set in .030 over to that one cylinder...............
Thanks,
Jay
Arizona
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I need an oil ring for a 331 engine with the ,030 Over pistons. I just need to do one cylinder, as the engine was totally rebuilt about 10 years ago. The cylinder has good compression...and the spark plug is firing, but the spark plug is getting oily as compared to the other cylinders where the plugs are bone dry. Also getting a hissing noise from that cylinder leading me to believe I have a bad oil ring . Am getting some oil burning off of the drivers side( where that cylinder is)...when driving on the road, and the engine is hot , especially when you take your foot off of the gas pedal.....going about 60 MPH..
If anyone can point me to who may have the 030 piston rings, it would be greatly appreciated, or better yet, a sealed power part number..............I really only need to do the one cylinder.................if someone out there has just the 3 ring set in .030 over to that one cylinder...............
Thanks,
Jay
Arizona
Are you saying the definate loud hissing noise coming from that cylinder area could be a result of a bad valve seal, and a broken oil ring would not be the reason for that springy/ hissing noise? Also I have to advance the timing in order to prevent the car from shaking/ vibrating (rough idle) in drive with your foot on the brake.....There is carbon build up on that one plug, and oil, even if I use a spark plug anti fouler.............
check rockauto.com
Ok
I'd really like to know more about the 'Hissing sound.' Details here might prove valuable.
Ron Threadgill
'Miss Scarlett' - 1959 Cadillac ElviSeville DeVilleDorado CoupeVertible Fleetisman D'EleBroughamWood VRX Hybrid
http://www.pipeline.com/~rthreadgill/
Cadillac & LaSalle Club - Central Virginia :
www.CentralVaCadillacLaSalleClub.org
-----Original Message-----
>From: "Bob bo...@optonline.net [classiccadillacchat]" <classicca...@yahoogroups.com>
>Sent: Apr 16, 2018 9:00 PM
>To: classicca...@yahoogroups.com
>Subject: Re: [Cadillac] 1954 Cadillac 331 piston rings
>
>Are you sure it’s not a leaking valve seal?
>
>> On Apr 16, 2018, at 8:51 PM, starcom...@yahoo.com [classiccadillacchat] <classicca...@yahoogroups.com> wrote:
>>
>> I need an oil ring for a 331 engine with the ,030 Over pistons. I just need to do one cylinder, as the engine was totally rebuilt about 10 years ago. The cylinder has good compression...and the spark plug is firing, but the spark plug is getting oily as compared to the other cylinders where the plugs are bone dry. Also getting a hissing noise from that cylinder leading me to believe I have a bad oil ring . Am getting some oil burning off of the drivers side( where that cylinder is)...when driving on the road, and the engine is hot , especially when you take your foot off of the gas pedal......going about 60 MPH..
>>
>>
>>
>> If anyone can point me to who may have the 030 piston rings, it would be greatly appreciated, or better yet, a sealed power part number................I really only need to do the one cylinder................if someone out there has just the 3 ring set in .030 over to that one cylinder.................
>>
>>
>>
>> Thanks,
>>
>>
>>
>> Jay
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>>
>>
>> Arizona
>>
>>
Well actually I did a new comp test on the bad cylinder..... and it was zero! Looked into the spark plug hole with a led flashlight, and saw oil on top of the piston. I must take off the head and the oil pan. The '54 Cad SVC. Manual says to loosen the idler arm bolts, and remove the stater. I have never done the oil pan removal..... so you don't have to loosen the motor mounts and jack up the harmonic balancer side of the engine to get the pan off????? Am thinking I have a broken ring... or hole in the piston. Wont find out for sure till I take it apart.....Amazing how good that 331 runs on only 7 cylinders....
take off head and tell what you see.....maybe you bent valve again?On Wednesday, April 18, 2018 11:18 PM, "starcom...@yahoo.com [classiccadillacchat]" <classicca...@yahoogroups.com> wrote:
Well actually I did a new comp test on the bad cylinder..... and it was zero! Looked into the spark plug hole with a led flashlight, and saw oil on top of the piston. I must take off the head and the oil pan. The '54 Cad SVC. Manual says to loosen the idler arm bolts, and remove the stater. I have never done the oil pan removal..... so you don't have to loosen the motor mounts and jack up the harmonic balancer side of the engine to get the pan off????? Am thinking I have a broken ring... or hole in the piston. Wont find out for sure till I take it apart.....Amazing how good that 331 runs on only 7 cylinders....The springy/ hissing noise is still a mystery..........
As it turned out, it was a bent exhaust valve in the 2nd cylinder from the firewall on the drivers side.....Car runs as smooth as silk now..... no more rough idle/car shaking at the stop signs..... or in drive with the foot on the brake.................
On Thu, Apr 19, 2018 at 01:29 AM, ROBERT F MOONEY moon7robe@... [classiccadillacchat] wrote:take off head and tell what you see.....maybe you bent valve again?On Wednesday, April 18, 2018 11:18 PM, "starcommand777@... [classiccadillacchat]" <classicca...@yahoogroups.com> wrote:Well actually I did a new comp test on the bad cylinder..... and it was zero! Looked into the spark plug hole with a led flashlight, and saw oil on top of the piston. I must take off the head and the oil pan. The '54 Cad SVC. Manual says to loosen the idler arm bolts, and remove the stater. I have never done the oil pan removal..... so you don't have to loosen the motor mounts and jack up the harmonic balancer side of the engine to get the pan off????? Am thinking I have a broken ring... or hole in the piston. Wont find out for sure till I take it apart.....Amazing how good that 331 runs on only 7 cylinders....The springy/ hissing noise is still a mystery..........
So you put the original piston back in with the Rings that were currently on it ?
How old are the Piston Rings ?
The machine shop said the rings were 'ok' and they were good with you putting it back together that way ?
And all is well ?
I am certainly impressed, as I have always been under the presumption that once Piston Rings have been in an engine for a while, they 'seat' and become 'mated to the relative position they are in, never to be rotated to even the tiniest degree. I also thought it was always necessary to re-hone the cylinders after a piston had been removed, so that the 'new' rings could seat adequately.
BTW, did you discover what bent the Exhaust Valve ? Was there evidence on the Piston of where it might have made contact there ?
Ron Threadgill
'Miss Scarlett' - 1959 Cadillac ElviSeville DeVilleDorado CoupeVertible Fleetisman D'EleBroughamWood VRX Hybrid
http://www.pipeline.com/~rthreadgill/
Cadillac & LaSalle Club - Central Virginia :
www.CentralVaCadillacLaSalleClub.org
-----Original Message-----
>From: "starcom...@yahoo.com [classiccadillacchat]" <classicca...@yahoogroups.com>
>Sent: May 22, 2018 11:52 PM
>To: classicca...@yahoogroups.com
>Subject: Re: [Cadillac] 1954 Cadillac 331 piston rings
>
>As it turned out, it was a bent exhaust valve in the 2nd cylinder from the firewall on the drivers side.....Car runs as smooth as silk now..... no more rough idle/car shaking at the stop signs..... or in drive with the foot on the brake.................
>
> I did drop the pan, that was a lot of fun, especially since I had to remove the taurus cover....and remove the idler arm bracket... to push the tube back in order to get the pan down .... The original writers of the '54 Cadillac Svc. Manual forgot to tell to drop that taurus cover, you could never drop the pan without removing it..... I removed the piston.... and had the machine shop check the rings, they were ok.....There was a slight scratch on the cylinder wall, the machine shop guy said it should be ok to put together that way ... and he was right...rings sealed and no oil burning.............
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> The exhaust valve stem was bent.....and it needed a new valve guide.... so the reason for no compression.....
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> What a learning experience, I also replaced the piston rod bearing, as it showed some signs of wear....
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> At first try..... the front of the oil pan was leaking oil, then I retightened the front 2 nuts (it is hell getting to them with the engine in the car), but it can be done....I used a 1/2" deep socket... and an allen wrench in order to clear the cross member lower frame... Th e drivers side nut was the hardest to get real tight.... After tightening both front pan nuts... presto... no more leaks after I took it out for a ride...Finally running on 8 cylinders now.................what a difference.............................
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> Jay
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> Arizona
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>---In classicca...@yahoogroups.com, <bobp8@...> wrote :
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> No need to drop the pan.. Check your push rods for being bent when you disassemble. I think you have valve train issues
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> On Thu, Apr 19, 2018 at 01:29 AM, ROBERT F MOONEY moon7robe@... [classiccadillacchat] wrote:
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> take off head and tell what you see.....maybe you bent valve again?
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>
>
> On Wednesday, April 18, 2018 11:18 PM, "starcommand777@... [classiccadillacchat]" <classicca...@yahoogroups.com> wrote:
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> Well actually I did a new comp test on the bad cylinder..... and it was zero! Looked into the spark plug hole with a led flashlight, and saw oil on top of the piston. I must take off the head and the oil pan. The '54 Cad SVC. Manual says to loosen the idler arm bolts, and remove the stater. I have never done the oil pan removal..... so you don't have to loosen the motor mounts and jack up the harmonic balancer side of the engine to get the pan off????? Am thinking I have a broken ring... or hole in the piston. Wont find out for sure till I take it apart.....Amazing how good that 331 runs on only 7 cylinders....
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> The springy/ hissing noise is still a mystery..........
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A new exhaust valve for the one cylinder fixed the issue.... sorry so long in replying...and yes... replaced the piston with old rings..., they were good... the engine was rebuilt just before I bought in 2009....