dobe

left school thursday, heard a loud pop and car started to have a bad vibration esp. in 5th and 6th gear... but i drove it the 40 miles home and then a bit more.... noticed dent in the valve cover pulled it off saw a broke rocker stud on exhaust then noticed no pushrods saw one barly and pulled out with my finger.. it was fine... friend found part of the other one with a flash light and magnet... had to pull the intake to find the other half...
guess sh*t happens
what length pushrods everyone else use? what kind?
i been looking at these trick flow pushrods 7.2 length or should I go a little longer?
btw i have/had ARP 3/8 studs, stock 94 harden pushrods
go figure with my luck

dobe

got some pics.. if it dont work try copy/paste or add some spaces to the end of it and hit enter
pic of broke pushrod

pic of what I saw when i pulled the valve cover

dobe

ordered 7.3"... this will work right?

IRABuss

yup, should work fine. you pics are not working......

Bud M

copy and paste the url into a new window, it will open the page.

dobe

Does anyone have an idea of why it broke like this? its compcams pro magnum roller rockers, stock 94 pushrods, moroso guideplates, comp "R" lifters

T/A#4

I was told my every cam grinder out there that if you install 1.6 rocker arms the valve springs will bind. Thus a spring change was a must.

dobe

Phil did my heads and assembled them and recommended me get the 1.6 rockers... so i dont think that was it...

dobe

it was tight in the head... already pulled it out though
waitin for the pushrods and intake gaskets to come in so i can put it back together and ride... its my only car

anymore ideas why it broke?
and any comments on runnin a 7.300" pushrod? cause thats what i ordered
thanks

shoebox

Why would you get longer pushrods?

dobe

It's what a friend and a mechanic recommended me to get

shoebox

AFAIK, the only reason you would change pushrod length is if you had some other changes that made the geometry different from stock. Longer pushrods will change where the tip of the rocker rides on the top of the valve.

Ken95Z28

How tight in the head?

You might go back and check the others and see how tight they are. I know when I got my heads the studs where only about 15 ft/lbs I went ahead and brought them up to specs. 50-55 ft/lbs.

dobe

Ken95Z28 - I put the studs in the heads and they were torqued to spec...

shoebox so should I send my 7.3's back and get the 7.2's?
how will i know if i cant use the 7.3?

shoebox

I would check out the geometry you now have. If it is correct, changing the pushrod length is going to throw it off.

Here is some reference: http://www.compcams.com/information/Products/Pushrods/