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#1
06-08-2023, 07:08 PM
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Oil support rail issue
I have custom Ross racing pistons. The wrist pin is in the oil ring groove, so they came with oil support rings. The instructions says to install support rail and then the ring pack as normal. I can not fit both oil rings and the scraper, there is not enough space. Oil support ring pistons are to be machined with 0.030 extra height in the oil ring land. I am wondering if this was left out when my pistons where made..
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#2
06-08-2023, 07:12 PM
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Sure sounds like it. I'd measure the grove and then contact Ross.
__________________
62' Lemans, Nostalgia Super Stock, 541 CI, IA2 block, billet 4.5" crank, Ross, Wide port Edelbrocks, Gustram intake, 2 4150 style BLP carbs, 2.10 Turbo 400, 9" w/4:30 gears, 8.76 @153, 3100lbs |
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#3
06-08-2023, 07:33 PM
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That, or you have the wrong oil control rings. Maybe the pistons are intended for a more-narrow oil ring.
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#4
06-09-2023, 04:28 AM
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The only rings I find have 3/16 oil controle rings.
But there is no doubt about that if using support ring, both upper and lower oil ring is to be used with the scraper? |
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#5
06-09-2023, 04:50 AM
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3/16 = .1875
4mm = .1575 About .030 thinner. Are you sure you have the correct rings? You need to contact Ross. |
| The Following User Says Thank You to Schurkey For This Useful Post: | ||
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#6
06-09-2023, 06:11 AM
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Sounds like you have a set of rings that use a 3/16" ( .187") oil control ring and you need a set of rings with a 1/8" (.130") oil control ring set up.
If this is so then height of your oil ring groove in the Pistons should measure a few thousands less then .200".
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#7
06-09-2023, 10:00 AM
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Oil ring Groove messures just about 0.200"
I found this to be the only ringset that will fit?? HSN-2M5501035 |
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#8
06-09-2023, 10:20 AM
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does your support ring have a dimple? are they in the right spot
__________________
1969 carousel red firebird 455, richmond 5 speed 1964 540 gto 1971 lemans sport convertible 1972 Maverick under slow construction |
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#9
06-09-2023, 10:35 AM
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Quote:
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| The Following User Says Thank You to PontiacLars For This Useful Post: | ||
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#10
06-09-2023, 11:22 AM
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What's your Bore size where talking about here?
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#11
06-10-2023, 05:27 AM
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4.160"
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#12
06-10-2023, 05:53 AM
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Did Ross supply you the rings?
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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