I usually follow gms recomendations but it seems if you ask 20 different people you get 20 different answers on the best alignment of ring gaps.
what do you recomend on a blown application
Top ring up second ring down
top oil rail to the front second oil rail to the back exapander ?
some say not to put gaps up and down or side to side?
Best Piston ring alignment /orientation for a blown motor
Moderator: John_Heard
Best Piston ring alignment /orientation for a blown motor
Street car Old motor 10.80 @122 1.49 60' 355 6-71 stock gm heads stock rocker arms block hugger headers 1-5/8"x2.5" collector
the car ran in the 9's in the 60's with an olds motor.
the car ran in the 9's in the 60's with an olds motor.
- Moparious Maximus
- Posts: 125
- Joined: Mon Oct 05, 2009 6:05 pm
- Location: Iowa
Re: Best Piston ring alignment /orientation for a blown moto
Thats what we do.
Top ring to towards the valley, second ring 180 degrees from it. Oil rings are inline with the pins 180 apart.
We've done it like that since I can remember, on all our motors. Personally I dont think its a big deal where they are but I do think the 180 apart is best, just so they have a hard time migrating towards each other. They will move around.
Top ring to towards the valley, second ring 180 degrees from it. Oil rings are inline with the pins 180 apart.
We've done it like that since I can remember, on all our motors. Personally I dont think its a big deal where they are but I do think the 180 apart is best, just so they have a hard time migrating towards each other. They will move around.
'63 Plymouth, Straight axle, Leaf springs, Drum brakes, 31x10.5wx15 Rears 3215lbs
Best time to date 7.99 @ 170 mph
572" Wedge 8-71 @ 28% OD, ALKY, Glide, Dana
http://www.youtube.com/watch?v=vq-xzFWHtFk
http://www.youtube.com/watch?v=JfyZSw59R_o
Best time to date 7.99 @ 170 mph
572" Wedge 8-71 @ 28% OD, ALKY, Glide, Dana
http://www.youtube.com/watch?v=vq-xzFWHtFk
http://www.youtube.com/watch?v=JfyZSw59R_o
Re: Best Piston ring alignment /orientation for a blown moto
thanks for the info how about the oil ring spacer gapMoparious Maximus wrote:Thats what we do.
Top ring to towards the valley, second ring 180 degrees from it. Oil rings are inline with the pins 180 apart.
We've done it like that since I can remember, on all our motors. Personally I dont think its a big deal where they are but I do think the 180 apart is best, just so they have a hard time migrating towards each other. They will move around.
How about the theory of NOT aligning them up where the piston thrust area is which I believe is up and down
thanks in advance
Street car Old motor 10.80 @122 1.49 60' 355 6-71 stock gm heads stock rocker arms block hugger headers 1-5/8"x2.5" collector
the car ran in the 9's in the 60's with an olds motor.
the car ran in the 9's in the 60's with an olds motor.
- Moparious Maximus
- Posts: 125
- Joined: Mon Oct 05, 2009 6:05 pm
- Location: Iowa
Re: Best Piston ring alignment /orientation for a blown moto
That thrust area theory might have some merit in a blower motor, they sure are hard on skirts, that could beat up rings too I guess.
About the oil seperating ring, I dont even pay attention to it, doesnt matter where it is, thats only my opinion of course someone else might have other ideas.
About the oil seperating ring, I dont even pay attention to it, doesnt matter where it is, thats only my opinion of course someone else might have other ideas.
'63 Plymouth, Straight axle, Leaf springs, Drum brakes, 31x10.5wx15 Rears 3215lbs
Best time to date 7.99 @ 170 mph
572" Wedge 8-71 @ 28% OD, ALKY, Glide, Dana
http://www.youtube.com/watch?v=vq-xzFWHtFk
http://www.youtube.com/watch?v=JfyZSw59R_o
Best time to date 7.99 @ 170 mph
572" Wedge 8-71 @ 28% OD, ALKY, Glide, Dana
http://www.youtube.com/watch?v=vq-xzFWHtFk
http://www.youtube.com/watch?v=JfyZSw59R_o
Re: Best Piston ring alignment /orientation for a blown moto
just curious anyone else out there putting the rings in any different way for any reason
Street car Old motor 10.80 @122 1.49 60' 355 6-71 stock gm heads stock rocker arms block hugger headers 1-5/8"x2.5" collector
the car ran in the 9's in the 60's with an olds motor.
the car ran in the 9's in the 60's with an olds motor.
Who is online
Users browsing this forum: No registered users and 27 guests