oiling ?

[Lee Thompson]

Any of you thumb suckers ever tried reducing oil to the top of eng? If so --how and what were the results. This would apply to roller lifters and roller rockers.

 

[charlief1]

The only way to reduce the oiling to the top end that I know of is to sleeve the lifter bores. If you use a 109 block it uses a different position for the main gallery, but both are right beside the right lifter bank. It would be a pain and you have to tell the machinist what exactly you want and he HAS to know v6 buicks.

 

[Steve V]

Not on a roller engine,but yes on a flat tappit. Using the ruggles cam bearing mods. Both the GN's in my sig,no issues so far. I have a roller motor that I am putting together this fall and I will do the same thing.HTH

 

[Lee Thompson]

correct me if I'm wrong, but

Not on a roller engine,but yes on a flat tappit. Using the ruggles cam bearing mods. Both the GN's in my sig,no issues so far. I have a roller motor that I am putting together this fall and I will do the same thing.HTH

Doing the cam bearing mods (drilling smaller feed holes in the bearing) only reduces oil to the cam bearing journals--has nothing to do with the lifters or rockers.

 

[Steve V]

Left bank of the engine is feed by the #1 cam bearing. I have the ruggles book around here some where,it sounded like a worth while mod so I did it.

 

[Lee Thompson]

true

Left bank of the engine is feed by the #1 cam bearing. I have the ruggles book around here some where,it sounded like a worth while mod so I did it.

Yes, you are right. But on a 109 block there is a groove in the block underneath the front bearing. So unless you filled the groove, you didn't restrict the oil to the left back. I have Ruggles book also, the book was bublished in the early 80's. All info in the one I have refers to a production 4.1 which has no groove. I guess I sdould have said cutting oil down to the roller rockers.

 

[Steve V]

Yeah we are missing the point,I should've said NO

Some early 109's didn't have the groove in the block,that's why the cam has a groove in it. Later production 109's did and they had no groove in the cam jounrnal.

 

[gnxtc2]

Any of you thumb suckers ever tried reducing oil to the top of eng? If so --how and what were the results. This would apply to roller lifters and roller rockers.

Yep, I did it.

I used the TA Crower shielded solid rollers with Smith Bros restricted push rods. . Of course, I was using roller rockers. All this in my 109 block.

Billy T.
gnxtc2@aol.com

 

[Lee Thompson]

Good

Yep, I did it.

I used the TA Crower shielded solid rollers with Smith Bros restricted push rods. . Of course, I was using roller rockers. All this in my 109 block.

Billy T.
gnxtc2@aol.com

Do you happen to know the size of the restrictor?

 

[gnxtc2]

Do you happen to know the size of the restrictor?

.030" They have other restrictor sizes available.

Billy T.
gnxtc2@aol.com

 

[Nick Micale]

There is another alternative Lee, weld up the hole in the side of the lifter body and then drill a .020/.030" hole.

I opted for the Smith Bros. pushrods.

My answer is in spite of being labeled as one of your "thumb suckers"! [Don't know about Billy though? ]

 

[Lee Thompson]

good info

Thanks for the replys. I have not seen or heard of anyone doing this. I did notice on a set of Harlan Sharpe rockers lately that there was a lot of oil coming up top. I was in to a bone stock eng. this past winter and very little oil was coming up top. Got me to thinking that here is a good place to cut down on oil. Should raise pressure some, I would think. I was thinking about JB welding up the hole in the adjuster screw, then drilling out to needed size.