Lifter valley baffles?

[roadracerjeff]

I spotted these from Milodon in a Summit Racing catalog -in the "hardcore racing" oil system section. Any value in putting these on a mild street engine? The parts aren't very expensive, and I thought it may make sense given that I'm doing a total rebuild. I'm all for anything that will extend lifter life. Also, how do these install? Looks like I'd have to tap 2 holes per cylinder bank. Thanks,

[Mopardad]

The Moroso lifter valley covers I have, had 2 wide U shaped spring type clips that would slide under the heads.

[FASTDARTCHESTER]

I use the very one you are talking about.

There is no drilling required. Like Mopardad says, it just clips under the heads.

I actually loc-tited the screws that hold the springs on for added reliability (??).

TD

[Mister Fiberglass]

how would this item extend lifter life?

[FASTDARTCHESTER]

it doesn't

[Mopardad]

Technically it won't extend lifter life but it will help to keep the lifter in its bore & pushrods from going into the bottom end of the motor in the event of a pushrod failure

[Mister Fiberglass]

Oh-Tay !!

BTW ....how is the quality of roller lifters these dayz ??

I heard that there was a rash of failures THUS filling up the oil pan with needle bearing rollers.

???

[DonP]

I thought the main benefit was to keep hot oil off the underside of the intake manifold.

[Mopardad]

Originally posted by DonP
I thought the main benefit was to keep hot oil off the underside of the intake manifold.

that too

[sbknut]

Be advised : As there are minor differences in the castings from 318 340 and 360 blocks, the lifter valley ribs change from year to year, minor trimming of Moroso's lifter baffel is necessary to get it to fit properly. I saw the results twice last year when push rods failed. The engine with the valley baffel did not lose oil pressure at full throttle and was back on the track in a short time. The other was retired until enough money was saved for a rebuild.

[Fury Boy]

at under $25 I counted it as cheap insurance. I did have to do some trimming, that took a while to get it right, pulling the pushrods in and out, but in the end, I think it was worth it.

[DartGT66]

Originally posted by Mister Fiberglass
Oh-Tay !!

BTW ....how is the quality of roller lifters these dayz ??

I heard that there was a rash of failures THUS filling up the oil pan with needle bearing rollers.

???

The quality of roller lifters has always been pretty good. The bearings can be wounded if you have too little valve spring pressure and get enough "hits" because of that. It isn't a thing that is going to happen all of a sudden, just the same thing as with flat tappet lifters if they start to wear out. If you have a need to adjust the valvelash often, better check what is wrong there. There isn't a lot of parts that are supposed to wear changing the lash. I have used roller lifters in the streets for over ten years in more than one car, converted after wiping out three flat tappets in a row, and have learnt to live with them and watch for certain things. Just keep an eye on the valve spring pressure and the lash and they'll work just fine. I renew my lifters every third year, and at that point they are just fine. Try that with a 0.7" lift flat tappet street & strip engine.