1.7 rockers always tick like a sewing machine?

BYRDPE · Oct 7, 2007

I checked the geometry during the install and they still sound like a sewing machine.
I'm going start it up and loosen them up one at a time and retorque to 18-22 ftlb or so to see if they will quiet down.
Is anyone else experienced this? If so what did you do to quiet them down.

68keyblr · Oct 7, 2007

I've got the exact same issue with my 1.6 pedestal mount RR's. From the research I've done on the issue, a certain amount of the "sewing machine" noise seems to be unavoidable. Some people seem to have success with retorquing them or changing the pushrod length.

Post your results after retorquing

BYRDPE · Oct 7, 2007

68keyblr said:
I've got the exact same issue with my 1.6 pedestal mount RR's. From the research I've done on the issue, a certain amount of the "sewing machine" noise seems to be unavoidable. Some people seem to have success with retorquing them or changing the pushrod length.

Post your results after retorquing

Will do....

Thanks

bill302 · Oct 7, 2007

read the aritcles below in the links i posted pushrod length can be a factor in your valvetrain noise links describe how to check and what to look for also if the valvetrain geometry is off you can Build your own homemade adjustable checking pushrod. Take a common 5/16-inch OD stock-type pushrod, cut in two, tap each end internally with 1/4-20 thread, and insert a piece of 1/4-20 threaded rod between the two cut ends...

http://www.circletrack.com/techarti...m_valvetrain_geometry/roller_tip_rockers.html

http://www.carcraft.com/techarticles/116_0401_setting_pushrod_length/index.html

Fox8950 · Oct 8, 2007

What brand of rollers are they? ... I made the mistake way back in buying a cheapass set of proform roller rockers and there was NO way to get them to quiet down unless you did go to the extent of getting different length pushrods even though they said "bolt on"

cenok is family · Oct 8, 2007

i have crane pedestal 1.7's and they are noisy too. it drives me crazy but i can't get them to quiet down either. i guess i'm gonna just live with it until i get different heads/rockers.

Daggar · Oct 8, 2007

I've got the Trickflows (also made by Crane, I believe) and yep... they're noisy.

BYRDPE · Oct 8, 2007

cenok is family said:
i have crane pedestal 1.7's and they are noisy too. it drives me crazy but i can't get them to quiet down either. i guess i'm gonna just live with it until i get different heads/rockers.

Yep...mine are Crane rockers also. I also checked the geometry during the install.
Has anyone tried to adjust the with the engine running?

cenok is family · Oct 8, 2007

BYRDPE said:
Yep...mine are Crane rockers also. I also checked the geometry during the install.
Has anyone tried to adjust the with the engine running?

i don't know how safe it would be loosening a rocker arm when the engine is running. i dunno though. yeah it makes me really paranoid when i drive around. i'm always worried a lifter is gonna be tapping or something else and i won't be able to hear it or i get it confused with the rocker arm noise. does anyone else's get a little louder once your car is warmed up?

BYRDPE · Oct 8, 2007

Funny thing is...mine is not as loud as they were the first day and they get quieter after warm up.

cenok is family · Oct 8, 2007

well it's weird. i noticed they get a bit louder at first, after about 20-30 mins, and then they make almost no sound after about 30-45 minutes.

Fett · Oct 8, 2007

BYRDPE said:
Funny thing is...mine is not as loud as they were the first day and they get quieter after warm up.

That would be a sign of lazy lifters, no?

seanw · Oct 8, 2007

Ditto on the 1.7's being noisy. I haven't found anything that will quiet them down, but my car makes so many other noises that it just blends in...

Sean

1.7 rockers always tick like a sewing machine?

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