Question related to rebuild

[Anlushac11]

D8 200 block, stock D8 head at the moment.

Can I run oil through lifters and pushrods with stock non adustable rockers?


I have block done and am gathering parts for reassembly.

I want to install the 1.6 roller tip rockers later in spring, probably out of my tax check, but I dont want to have to pull the head and lifters and such.

Can I run the oil through parts now til roller rockers or do I have to keep the oil through the shaft setup til I convert?

Also wasnt there some problem with trying to cut large valve seats hitting the waterjacket in the head?

I seem to remember someone saying they took head in to have big valves and hardened valve seats put in and when the machinist cut for the bigger hardened valve seats they hit the water jacket?

I am planning to get my cut out for 1.84" int and 1.56" exh.

Thirdly, IIRC the cam is notched to clear the rod bolts so it would seem it would be easier/necessary to install camshaft before installing rods so I can just rotate cam by hand til its aligned.

 

[Hot 6t Falcon]

The stock pushrods are solid, so you won't get oil up them... As you know, the oil comes up throught a port at the rear of the head and travels the length of the rocker arm shaft, lubing the rockers; squirts out to lube the ends of the pushrods and down the pushrod holes to lube the lifters and the cam.

Try looking at the How To Clean your Rocker Arms Sticky actually, it is "Rocker Arm Shaft Oiling hints" There is a diagram of the oil flow path.

Good Luck

 

[Anlushac11]

The stock pushrods are solid, so you won't get oil up them... As you know, the oil comes up throught a port at the rear of the head and travels the length of the rocker arm shaft, lubing the rockers; squirts out to lube the ends of the pushrods and down the pushrod holes to lube the lifters and the cam.

Try looking at the How To Clean your Rocker Arms Sticky actually, it is "Rocker Arm Shaft Oiling hints" There is a diagram of the oil flow path.

Good Luck

Hmmm...I dont think you understand what I mean.

When you switch to the 1.6 roller tip rockers your supposed to install oil through lifters and hollow oil through pushrods to get oil flow up to lubricate the roller tips.

 

[CNC-Dude]

You probably would want to block off the original oil path thru the head to the rocker shaft. Because your new found oil path thru the pushrods will likely create excessive pressure bleed-off if it continues to travel both routes....

 

[wsa111]

All right here is the deal.
The stock adjustable rocker arms 1.5 & the stock looking 1.6 adjustable & the roller tip aluminium rockers all use an non oiling pushrods & non oiling lifters.
But you need the pushrods with the cup at the top to mate with those rocker arms.
All the oiling is through the rocker arm shaft.

Lets go to the next level & say you purchase the 1.65 full roller rocker arms by yella-terra.
They have to have oil through lifters & special shorter oil through pushrods.
The oil through lifters are really from a 289-302 engine.
These lifters are about .150" taller than the non oil lifters.
If you are planning to install the 1.65 full roller rockers at a later date, & want to use the 1.5-1.6 rockers, you can still use the oil through lifters since you have a new camshaft & want to breakin is a set of lifters.
BUT you need to purchase special non oiling pushrods available from clay smith & are .150" shorter than the regular pushrods for the adjustable rockers to maintain the correct valve train geometery. 7.850" in length.
Then when you are ready to stepup to the 1.65 yella-terra rockers all you do is remove the special pushrods & install the oil through pushrods which come with the 1.65 rockers. Then all the oiling is done from lifter-pushrod & then to the rocker arms. The oil passage from the rear of the head is blocked off when using the 1.65 rockers.

It is fully safe to use the 302 oil through lifters on a non oiling pushrod, because all the rocker arm oiling is still done from the rocker arm shaft.

Hope this clears up all the above questions.

On my engine which has the v-8 oil through lifters i can use any rocker arm i want to as long as the special 7.850" shorter non oiling pushrods are used for the 1.5 to 1.6 ratios.
Since i have the 1.65 rockers i just use the oil through pushrods for the 1.65 full roller rockers. Bill

 

[Anlushac11]

Thank you for clearing that up. Im looking at going to the 1.6's.

 

[Broncitis]

Drop the 1.6 roller tips in and go, WSA had a good point though, any build in the future I will use the ford oil thru lifters so all my options are open.

 

[Anlushac11]

With 5500rpm rev limit with cast pistons any reason to run anti-pump up lifters?

 

[wsa111]

Just from my experience, 5500 & below can run stock hydraulic lifters.

Anything over that rpm range go with the anti-pump up lifters.

Depending on the camshaft design that can be the X factor for maximium rpm's for juice lifters.

If you plan to go over 6 grand, then definately get the anti pump up lifters.

Also when you adjust the valves, stay in the first .025" of lifter preload.

I would get a second opinion from your camshaft grinder.

Thats another reason to go with solid lifters. The rpm limit is the camshaft profile & valve spring tension. Plus you can taylor the duration by changing the valve lash.

If you want to set it & forget it then go with the juice lifters. Bill