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-   -   Tunell raaammm!!!! (https://www.offshoreonly.com/forums/general-q/374052-tunell-raaammm.html)

articfriends 12-01-2021 01:50 PM

Same way with the old post saying someone beat/or ate the "inferior" seats out of their AFR heads in less than 20 hrs yet I have 400 + boosted hours on the "normal" seats in my V-1 AFRS (with tiny touch up vj at every frreshen), I dont always grasp whats going on with these valve train issues, ie, some motors are perfectly fine, others eat the stuff for breakfast, Smitty

KWright 12-01-2021 02:11 PM

I use Jeff Johnson valve covers with oilers,they have a vertical bar in front of the springs. When I moved to the oilers I noticed a rise in temps especially after extended pulls. 6000 rpm range.

ICDEDPPL 12-01-2021 04:11 PM


Originally Posted by KWright (Post 4813862)
I use Jeff Johnson valve covers with oilers,they have a vertical bar in front of the springs. When I moved to the oilers I noticed a rise in temps especially after extended pulls. 6000 rpm range.

Id say that was proof that they cool down the springs, no ?

KWright 12-01-2021 04:46 PM

Yes they do. But like anything else it's more than just adding them. Is your pump capable of handling the extra capacity? Do you have enough sump in your pan for the added volume, also drain back if you rely on stock you will be creating alot more windage. For us it was worth the effort, when we freshened the heads valve spring pressures were spit on.

ICDEDPPL 12-01-2021 06:36 PM


Originally Posted by KWright (Post 4813874)
Yes they do. But like anything else it's more than just adding them. Is your pump capable of handling the extra capacity? Do you have enough sump in your pan for the added volume, also drain back if you rely on stock you will be creating alot more windage. For us it was worth the effort, when we freshened the heads valve spring pressures were spit on.

Ive had em on for a few years now . external pump has more than enough capacity and pan has a full windage tray


https://cimg7.ibsrv.net/gimg/www.off...1101e1c192.jpg

KWright 12-01-2021 06:44 PM

Peterson are nice pumps. We run a 4 stage peterson, it allows us to run 10 inches of vacuum.

ICDEDPPL 12-02-2021 03:57 PM

I only run one stage , I feel so inadequate.:pacifier:

KWright 12-02-2021 04:18 PM

Lol Its a huge upgrade from a wet sump pump. Not only have you reduced the torsional flex on your cam from driving the pump but also reducing load on your timing chain or belt. For anyone not wanting to spend on a full dry sump system, definitely the way to go.

TylerBurich 12-18-2021 10:39 AM

Well the Engine Masters "Tunnel Cram" episode didn't disappoint. I'm really glad they had marine engines in the discussion. Dan, I think you are on to something here.

F-2 Speedy 12-18-2021 10:58 AM

And the oil filter episode last night was interesting also with Fram gold and Wix racing leading the pac and the little blue guy not far behind


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