Oil Return Screen Yes/No
Thread Starter
Burning Brakes
Joined: Aug 2008
Posts: 878
Likes: 55
From: Deep South Denmark
Oil Return Screen Yes/No
For my Big Block 489 kit I bought this oil return screen kit for the lifter valley:
http://www.summitracing.com/parts/mor-25001
After reading on other forums I'm no longer sure I should install it.
Some say that it was used before when the quality of the aftermarket lifters and rockers were not as good as they are today and it's no longer worth the risk of the screen or part of the epoxy getting loose.
Searching this forum there are some that recommend the screens, but that is mostly in older posts.
My lifters are Morel Street series (the cheap ones), rockers are Crane Gold. This is for a "low power" (540HP) hydraulic lifter setup.
http://www.summitracing.com/parts/mor-25001
After reading on other forums I'm no longer sure I should install it.
Some say that it was used before when the quality of the aftermarket lifters and rockers were not as good as they are today and it's no longer worth the risk of the screen or part of the epoxy getting loose.
Searching this forum there are some that recommend the screens, but that is mostly in older posts.
My lifters are Morel Street series (the cheap ones), rockers are Crane Gold. This is for a "low power" (540HP) hydraulic lifter setup.
Thread Starter
Burning Brakes
Joined: Aug 2008
Posts: 878
Likes: 55
From: Deep South Denmark
Race Director
Joined: Jan 2000
Posts: 13,014
Likes: 2,257
From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
I know some folks have gone away from them...but I still like them in big blocks. Those are some awful big holes above the cam and anything that happens is going to get tossed around/chewed up by the cam on it's way to the rotating assy. and eventually the pan(hopefully).
I installed mine 14 years ago in my 540/555 and the epoxy is still as solid as ever. No issues.
JIM
I installed mine 14 years ago in my 540/555 and the epoxy is still as solid as ever. No issues.
JIM
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
I've been wishing I had thought to put them in my 427 BBC redux after deburring and before the Glyptal. In any event, given that I'll have upwards of $15K in the build by the time it's finally done I'll almost certainly end up going to the trouble for the insurance against chewing up a bottom end full of expensive bits should something bad happen upstairs at high RPM.
So, my vote would be a "yes". YMMV
Oh, and if it's a truly hi-perf build, I'd suggest considering a Moroso filter, if not a Canton.
So, my vote would be a "yes". YMMV
Oh, and if it's a truly hi-perf build, I'd suggest considering a Moroso filter, if not a Canton.
Last edited by TheSkunkWorks; Sep 1, 2014 at 06:37 PM.
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Had good luck with Epoxy long term also
Screen the larger holes, plug off the ones by the cam or use stands
At that point unless you lose the needle bearings on a roller lifter not much risk at all (or use a bushed lifter).
Screen the larger holes, plug off the ones by the cam or use stands
At that point unless you lose the needle bearings on a roller lifter not much risk at all (or use a bushed lifter).
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Le Mans Master
Joined: Oct 2010
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From: melbourne florida
2023 C3 of the Year Finalist - Modified
i always use them if i do a complete build. another good filter is the WIX racing model, the difference in weight alone tells you the case is much stronger . if you ever had a filter blow apart near the end of a 1/4 mile pass running 14-32 w slicks it is something i don't want to repeat. anybody know if hastings still is in the filter business, they used to be good but can't find them around here.
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
i always use them if i do a complete build. another good filter is the WIX racing model, the difference in weight alone tells you the case is much stronger . if you ever had a filter blow apart near the end of a 1/4 mile pass running 14-32 w slicks it is something i don't want to repeat. anybody know if hastings still is in the filter business, they used to be good but can't find them around here.
Not on the strip, but have had one blow, oiling down the headers as well as the rears. Fortunately, I wasn't going all that fast at the moment, but getting stopped safely was definitely an adventure, not to mention the excitement of seeing the mirrors completely full of flames. Thus, one of the big reasons why I simply refuse to run a "consumer grade" filter on a hi-perf application; the other being to avoid excessive restriction in the first place. FWIW, both car and driver survived...
Race Director
Joined: Jan 2000
Posts: 13,014
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From: Corsicana, Tx
2020 C2 of the Year - Modified Winner
2020 Corvette of the Year (performance mods)
C2 of Year Winner (performance mods) 2019
2017 C2 of Year Finalist
Looks nice. They'll be there forever.
JIM
JIM