Scorpion Roller Rocker Question

[Scoobum]

If the pushrods are the correct length, can I adjust the rockers the same as an old school SBC for one of these engines.

[wmsonta]

FTH, yes.
If the flat hydro lifters have the wire retainer instead of the c-clip, I want at least 1/4 turn down.

[Scoobum]

FTH, yes.
If the flat hydro lifters have the wire retainer instead of the c-clip, I want at least 1/4 turn down.

Talking to my engine builder he is saying half a turn from zero lash. Think I use to do a 1/4 to 1/2 turn on the SBC's.

[wmsonta]

The OEM 1st gen sbc were 1 turn down factory. 84# of seat pressure was the factory target.
If I were going to rely on a knock sensor, I would probably stay away from the Rhoads and 'racing' lifters. I have not seen either used in probably 20 years.
If you have the paired rockers, you CAN convert the bolts to studs. If so, I would use good hardware and keep the pairing.

HTH.

[wmsonta]

I just caught the Scorpion rocker part.
I like them. They used to sell half/mixed sets. I could get 8-1.65 and 8-1.5 at a single set price.

[Scoobum]

This is a large CI TR engine. No idea what lifters are in it. The vid he sent me the lifters are as loud as hell. Nice guy, but he's gone to the wrong people since day 1. TR owners love to struggle.

[wmsonta]

This is a large CI TR engine. No idea what lifters are in it. The vid he sent me the lifters are as loud as hell. Nice guy, but he's gone to the wrong people since day 1. TR owners love to struggle.

I take that as large cu in turbo regal engine.
If so, I am currently taking a '78 Monza wagon out of storage. 231 even fire/sag 4 spd. When I bought it, you could hear the lifters at low rpm from probably 200ft away. It was worn out (leak down @ 80-85%), but ran good w/perfectly clean exhaust. I installed an oil pump plate kit using the heavy bypass sprg. Have not heard a lifter since. Oil pressure hot is 25+@ idle and 45+ at highway speed. 0-40 wt oil. It served as a backup work commuter for 10 yrs. Put in storage in '03 when I bought another new S-10. My old '92 S-10 is still in service w/353k.
A lot of things can make Buick lifters loud. Before I did anything, I would verify the valve train has no slack. Pull a valve cover and try to rattle the rockers.
You probably do not need my advise, dunno-

[Scoobum]

This engine has been built twice. Oil pressure is okay and the first time it was built he says the lifters were quiet. I'm up for suggestions as to what went on for this latest build. I'm gonna check on Sunday if the lifters are adjusted correctly. If they are, then I don't know what's going on.

[wmsonta]

...... Oil pressure is okay .... The vid he sent me the lifters are as loud as hell.

Yeah, there has to be a lot of slack somewhere. Or not enough oil to the lifters/valve train. I fear adjustment will not be a solution.
I have seen hydraulic lifters set nearly every imaginable way, none were 'loud as hell'. I have seen them set some number of turns up from fully collapsed to 0.004"-0.006" clearance. None were as loud as my Monza which had insufficient oil supply for the lifter to recover. I have never adjusted the valves.

[Scoobum]

...... Oil pressure is okay .... The vid he sent me the lifters are as loud as hell.

Yeah, there has to be a lot of slack somewhere. Or not enough oil to the lifters/valve train. I fear adjustment will not be a solution.
I have seen hydraulic lifters set nearly every imaginable way, none were 'loud as hell'. I have seen them set some number of turns up from fully collapsed to 0.004"-0.006" clearance. None were as loud as my Monza which had insufficient oil supply for the lifter to recover. I have never adjusted the valves.

...... Oil pressure is okay .... The vid he sent me the lifters are as loud as hell.

Yeah, there has to be a lot of slack somewhere. Or not enough oil to the lifters/valve train. I fear adjustment will not be a solution.
I have seen hydraulic lifters set nearly every imaginable way, none were 'loud as hell'. I have seen them set some number of turns up from fully collapsed to 0.004"-0.006" clearance. None were as loud as my Monza which had insufficient oil supply for the lifter to recover. I have never adjusted the valves.

I'm gonna bring number 1 cylinder up on compression stroke and check it. I have a sneaking suspcion it's gonna be okay...and something else is wrong.

[nocooler]

Brad - what oil is in it?
I'm going to assume it's a roller cam since it's got a set of aftermarket rockers.
Morel's are known to be loud with too thick of oil in them. Over on the LS boards it has been recommended to use 5-30 Castrol GTX and it'll quiet them down.
I'm not saying this is your issue just something to think about.

[Scoobum]

Jeremy, I'll text him and ask. Thanks.

[Scoobum]

Jeremy, the vid he sent they're loud...real loud.

[wmsonta]

........ they're loud...real loud.

Well, loud is relative and lifters are an assumption at this point. Scoobum, are you looking at a mechanical bind or interference? Broken rockers, bent valves, stroked crank w/stock pistons? My curiosity meter is now pegged. Hopefully, your video is close to a running engine.

[Scoobum]

........ they're loud...real loud.

Well, loud is relative and lifters are an assumption at this point. Scoobum, are you looking at a mechanical bind or interference? Broken rockers, bent valves, stroked crank w/stock pistons? My curiosity meter is now pegged. Hopefully, your video is close to a running engine.

All I know is what the owner is telling me and the vid. It SOUNDS like valve train noise...and fukn loud. Oil pressure is 40 PSI hot in park I'm being told.