how much room should i leave for roller rockers

which feeler guage do you guys use for clearance on the roller tips, the book says to leave .020 on a solid lifter. is that about what i should leave using roller rockers?just having a little trouble keeping the roller tips on the valve tip and was wondering if i was leaving too much.

Sounds like you have some bigger issues than lash. What rockers and pushrod legnth are you running? What heads?

dfree383 wrote:Sounds like you have some bigger issues than lash. What rockers and pushrod legnth are you running? What heads?

dave, i am running crane golds with 8.550 pushrods. dove-c heads.3/8 pushrods. think the rods are too short maybe???
deck is 10.322. D1VE

What ratio crane golds? Are they running off the front or rear of the valve? Did you have the pedistal machined down?

dfree383 wrote:What ratio crane golds? Are they running off the front or rear of the valve? Did you have the pedistal machined down?

1.7 ratio. dont know what you mean by front or rear. sorry. and the heads are pretty much bone stock except for the springs and rollers. ddnt have the pedestal machined down.do the doves need the pedestal machined down to run rockers? if they do i didnt know that.i have to run them until i get my cobra jet heads finished.probably take all summer. :roll:i set them at 20 thou thismorning.hope it isnt too much.thanks dave. kyle

Problem you have is a chevy rocker and not machining the pedistals down the the thickness if the guide plates, you kinda have a double wammy.

.020 lash is pretty typical and should be decent.

The 1.7's should work. They aren't ideal, but I actually used them also for a little while. The geometry is way off compared to Ford specific rockers.

ok, thanks dave,so when i have the heads apart again i will have them machined down, and i guess i better invest in some 1.73 rockers.is it affecting the perfomance of the engine very badly or is it simply putting my valvetrain out of geometry.thanks again. kyle

Yes it will affect the performance if the the wrong ratio rockers are used.

X2 both are effected

schmitty wrote:Yes it will affect the performance if the the wrong ratio rockers are used.

well one thing to look forward to schmitty is this thing should really kick some chevy butt around here if i get it straightened out right
kyle

All rockers are not created equal... some 1.7 rockers will work better than others to get your geometry more correct. What brand, p/n rockers, effective stud length, and pushrod length are you using... there is more to it than just the fact that you are using 1.7 rockers.

i have a picture of the correct position of the rocker tip at top and at full compresion, problem is it is on the old computer.and i cant remember where i stumbled upon it, but i am looking.i dont have the part number for the crane gold rockers.thats all i know about them as i bought them used.would a stud girdle help??
and if i use a stud girdle do i take the guide plates out? dumb questions i know but.thanks guys.kyle

Are you terrorizing the streets, err....street of whitney with that bronco?
i'll have to look you up next time I make the journey down there

Diggindeeper wrote:Are you terrorizing the streets, err....street of whitney with that bronco?
i'll have to look you up next time I make the journey down there

lol. i don venture out onto the street with the bronc. heat score.just ask at the shell for kyle.