Flow restrictors or not with a roller cam
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
If you have a high end motor smart people somewhat restrict top end oil feed. They go to a NO bypass system with the stronger Wix filters that can take the pressure. They adjust oil pressure with the weight of the oil.
Like my 2001 FireBird uses 5W-30 and reads 60 psi going down the freeway
Thread Starter
Racer
Joined: Nov 2006
Posts: 264
Likes: 0
From: McLouth Kansas
My bypass is not blocked,,,,I want all the oil to go thru the filter,,,,
How do I block the bypass ??
Thanks
Drifting
Joined: Aug 2005
Posts: 1,682
Likes: 3
From: League City TX
I wont suggest that you shouldnt do what has been working for you, but it is by no means the only credible opinion out there.
Le Mans Master
Joined: Apr 2007
Posts: 7,353
Likes: 72
From: Graceland in a Not Correctly Restored Stingray
If you're going to block the bypass, I suggest you give as much, if not more, consideration to filter flow as anything. Typical "brand name" filters with super-micro filtration (overkill) are usually also restrictive, so I'm uncomfortable with the idea of blocking the bypass without at least running a Moroso, or stepping up to multi-filters or a Canton canister. My solid-roller 427 BB build (should pick up the block from Dynotech next week!) will have a Moroso with bypass until I can budget for that Canton, as I really don't want to mess with the remote dual-filter setup again. At least that's my story, and I'm sticking with it...
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
The key word is Somewhat............. drilled out restrictors like .100 or .110 just keep the flow to what the aftermarket blocks have done. On our Fords at the race shop we drill and tap cam valley. Then install tubing to get more oil to where it is needed
Burning Brakes
Joined: Jul 2009
Posts: 1,132
Likes: 14
From: A town SC
Safety Car
Joined: Nov 2005
Posts: 3,961
Likes: 573
From: Lompoc, CA. Santa Barbara County
I run a big block melling oil pump in my small block 350. 60 psi at idle, 75 psi off idle to redline. I also have a seven quart oil pan and I run a big oil cooler in the nose of the car. I also run a big tall 1 to 1 1/2 quart filter.I know I'm giving up horsepower, but when I converted to the hydrualic roller cam, I polled this forum on whether or not to toss the big block pump. The overwhelming answer was, "it ain't broke, don't fix it." I did have to make some valve cover baffles for my AFR heads. The oil was comming out of my breather. I'm no engine builder, but I did build this engine. Other opinions and your results may vary.
Bee Jay
Bee Jay
