Better rings for more spray 521ci
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rmcomprandy
6jeff6
6 posters
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Better rings for more spray 521ci
I have a 521 with scj heads, 10-1 compression, a block, mechanical roller cam m-6250-a514, forged pistons, forged h-beam rods, cast nodular iron crank, with ring gap 24 top 22 bottom. What do I need to buy and gap rings for more spray? Right now I'm limited to a 250 shot. I am also considering getting heads worked but depends on how much rings cost. Head work will be 2.25 valves and such or just cleaned for better flow. Any help would be great
6jeff6- Posts : 279
Join date : 2015-09-03
Re: Better rings for more spray 521ci
6jeff6 wrote:I have a 521 with scj heads, 10-1 compression, a block, mechanical roller cam m-6250-a514, forged pistons, forged h-beam rods, cast nodular iron crank, with ring gap 24 top 22 bottom. What do I need to buy and gap rings for more spray? Right now I'm limited to a 250 shot. I am also considering getting heads worked but depends on how much rings cost. Head work will be 2.25 valves and such or just cleaned for better flow. Any help would be great
Personally ... I would use a hard-coated steel top ring.
Re: Better rings for more spray 521ci
Thanks. Best brand/manufacturer or atleast recommendations?
6jeff6- Posts : 279
Join date : 2015-09-03
Re: Better rings for more spray 521ci
I would call Total Seal. For that amount of spray you don't need anything exotic but let the experts tell you. I deal with Ed Law but there are plenty of sharp guys there who will help direct you. As far as gap, they'll tell you once you decide on a ring package.
Scott Foxwell- Posts : 419
Join date : 2011-06-23
Age : 65
Location : E Tennessee
Re: Better rings for more spray 521ci
ok
Last edited by BOSS 429 on January 9th 2017, 1:11 pm; edited 1 time in total
BOSS 429- Posts : 2365
Join date : 2009-08-10
Location : Ill
Re: Better rings for more spray 521ci
It's roush/Yates motor and I called the tech line directly an they said I could spray up to 250 shot. I sprayed a 200 shot about 25 times and a 250 shot once (broke C4 forward drum)
6jeff6- Posts : 279
Join date : 2015-09-03
Re: Better rings for more spray 521ci
With increased ring end gap ( to prevent butting) a moly ring is marginal beyond the 250-300 shot. Steel rings ( and increased gap) are required for numbers over 300. I do not recommend the "hardened manganese" rings as they hurt cylinder walls FAR more than the more durable steel rings like the Total Seal AP AND Hastings PVD offerings.
gt350hr- Posts : 662
Join date : 2014-08-20
Location : Anaheim , CA
Re: Better rings for more spray 521ci
Thank you for all the help. I hope to get to a 500 shot but will be happy with 250 shot for a little while. I'm thinking the 500 would need a couple stages to come in as I already can't spray 200 off the line so I just did 2nd an 3rd.
6jeff6- Posts : 279
Join date : 2015-09-03
Re: Better rings for more spray 521ci
Or the size of the ring isn't made anymore...
5/64
3/16
Was what ford performance called me back wirh...
5/64
3/16
Was what ford performance called me back wirh...
6jeff6- Posts : 279
Join date : 2015-09-03
Re: Better rings for more spray 521ci
6jeff6 wrote:Or the size of the ring isn't made anymore...
5/64
3/16
Was what ford performance called me back wirh...
Total Seal has spacers to partially fill a ring groove to use a thinner ring; radial gas ported spacers, too.
Re: Better rings for more spray 521ci
mind if i ask how much ET it picked up with the 200 shot?
6jeff6 wrote:It's roush/Yates motor and I called the tech line directly an they said I could spray up to 250 shot. I sprayed a 200 shot about 25 times and a 250 shot once (broke C4 forward drum)
wayney- Posts : 187
Join date : 2013-02-19
Age : 55
Re: Better rings for more spray 521ci
Why did it switch to such a thin ring?
6jeff6- Posts : 279
Join date : 2015-09-03
Re: Better rings for more spray 521ci
Went from 10.8 to a 9.9 on same day passes mph went from 128 to 138-140mph. And trans was on well over 200 passes and a ton of street miles (c4). Car had gone 10.4 n/a when trans was fresh but was falling with every once an while 10.5
6jeff6- Posts : 279
Join date : 2015-09-03
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