Indy 572 heads with jesel rocker arms

Posted By: 602heavy

Indy 572 heads with jesel rocker arms - 01/23/10 07:46 PM

Managed to shim/centre most rocker arms to valve tips , seems i can't get four ex rollers to centre , they sit around 1/3 over to one side of valve tip , any ideas?

Decided to go pushrod oiling on this 605" , the last time this was built i plugged the oil hole in lifter , i've now opened the oil way in gallery side to .030" , had Smith Bros make me some heavier pushrods with oil holes , do you guys plug the oil way in rocker adjuster? , seems the oil shoots straight out the top of adjuster if not plugged.

TIA.

Posted By: Old School

Re: Indy 572 heads with jesel rocker arms - 01/23/10 08:11 PM

Quote:

Managed to shim/centre most rocker arms to valve tips , seems i can't get four ex rollers to centre , they sit around 1/3 over to one side of valve tip , any ideas?

Decided to go pushrod oiling on this 605" , the last time this was built i plugged the oil hole in lifter , i've now opened the oil way in gallery side to .030" , had Smith Bros make me some heavier pushrods with oil holes , do you guys plug the oil way in rocker adjuster? , seems the oil shoots straight out the top of adjuster if not plugged.

TIA.

i had the same thing happen when i went to 1.7,s for my 572-13,s. mine hung over about the same amount too.i sent them back to jessel and they corrected them. they did it by pressing in new bearings to center the arms over the tips.they said you can not just move the old bearings around,you would have to use new bearings.they did this for no charge.

Posted By: AndyF

Re: Indy 572 heads with jesel rocker arms - 01/23/10 08:18 PM

I think you'll want solid adjuster screws if you're pushrod oiling. If the adjuster screws are drilled then your oil pressure just goes out the end of the screw.

Posted By: 602heavy

Re: Indy 572 heads with jesel rocker arms - 01/23/10 08:30 PM

Living in UK is a PITA to send these back to Jesel , was thinking about moving the roller cage over but not sure how these are pressed in/locked , i could open up the holes in rocker shaft to move the rocker arms over?

Any ideas how to block the oil holes in adjusters? , used silicone before with no issues.

Posted By: 602heavy

Re: Indy 572 heads with jesel rocker arms - 01/23/10 09:08 PM

Was having a problem with rocker arms breaking @ adjuster (exhaust) , seems these new rocker arms have a fair bit more material around this area , they also look different , maybe this was a well known problem to Jesel?

Posted By: sc301v

Re: Indy 572 heads with jesel rocker arms - 01/25/10 02:00 PM

If the oil holes are plugged in the adjuster.....How are ya gonna oil thru the pushrod....I know you know what you are talkin about but im lost more than anything..

Posted By: Hemiroid

Re: Indy 572 heads with jesel rocker arms - 01/25/10 04:12 PM

Quote:

If the oil holes are plugged in the adjuster.....How are ya gonna oil thru the pushrod....I know you know what you are talkin about but im lost more than anything..

It's going to get oil from the lifters.

Posted By: sc301v

Re: Indy 572 heads with jesel rocker arms - 01/25/10 07:57 PM

But doesnt it have to go thru the adjuster to get oil to the rocker arm??

Posted By: 602heavy

Re: Indy 572 heads with jesel rocker arms - 01/25/10 08:17 PM

Quote:

i had the same thing happen when i went to 1.7,s for my 572-13,s. mine hung over about the same amount too.i sent them back to jessel and they corrected them. they did it by pressing in new bearings to center the arms over the tips.they said you can not just move the old bearings around,you would have to use new bearings.they did this for no charge.

Seems the roller cage is'nt centered in the ex rockers that are causing the issues ,why do these have to go back to Jesels? , i can't see why the roller cage can't be moved over 1/4" with a drift in a vice? , already removed one roller cage on a spare i have.

, am i missing something?

The springs will be getting oil through the spray bar oiling.

Posted By: 602heavy

Re: Indy 572 heads with jesel rocker arms - 01/25/10 08:22 PM

Quote:

But doesnt it have to go thru the adjuster to get oil to the rocker arm??

As AndyF said , if the oil ways in ajuster are left open too much oil will flood the top end.

Posted By: sc301v

Re: Indy 572 heads with jesel rocker arms - 01/26/10 01:39 PM

So are ya spray bar oiling or pushrod oiling??

Posted By: supercomp

Re: Indy 572 heads with jesel rocker arms - 01/26/10 02:25 PM

Quote:

Quote:

But doesnt it have to go thru the adjuster to get oil to the rocker arm??

As AndyF said , if the oil ways in ajuster are left open too much oil will flood the top end.

Our b1 jesels oil out the top of the adjuster and cause no problem with oil pressure. Why have to use spraybar and pushrod?

Posted By: Old School

Re: Indy 572 heads with jesel rocker arms - 01/26/10 07:13 PM

Quote:

Quote:

i had the same thing happen when i went to 1.7,s for my 572-13,s. mine hung over about the same amount too.i sent them back to jessel and they corrected them. they did it by pressing in new bearings to center the arms over the tips.they said you can not just move the old bearings around,you would have to use new bearings.they did this for no charge.

Seems the roller cage is'nt centered in the ex rockers that are causing the issues ,why do these have to go back to Jesels? , i can't see why the roller cage can't be moved over 1/4" with a drift in a vice? , already removed one roller cage on a spare i have. , am i missing something?

The springs will be getting oil through the spray bar oiling.

i dont know why,they did not tell me.i had mine at the machine shop and they were going to move the bearings over. so i called jessel to make sure that was ok,they said not to,and to send them back to them.i thought they said they needed to press in new bearings.they totally paid for everything.
i also use spray bar oiling.its on a street car.i think the spray bar helps keep the springs cool.i use k motion 950,s,they seem to be holding up well.

Posted By: 602heavy

Re: Indy 572 heads with jesel rocker arms - 01/26/10 09:12 PM

Managed to move the bearings over 3/8th" , they now sit centered on valve tips but hit the side of stand

, will have to remove some material off the stand , maybe 1/8th".

Leaving oil way in adjuster unplugged will have 16 .030" holes leaking down , would think this will flood the top end with too much oil? , i drilled the lifters @.030" , was worried any smaller could easily get blocked , maybe plug adjusters & redrill with .020" drill bit? , doing away with spray bar oiling?

Posted By: supercomp

Re: Indy 572 heads with jesel rocker arms - 01/27/10 01:54 AM

We have over 500 passes on ours with no overoiling, have good oil pressure. Have .020 restricters in pushrods and .060 hole in bushing. Stock 400 block.