finally installed the 91 cam. my question for those who have done it (i know this has been asked **, but searching for the answer is too ardous for me right now): how long should that clatter noise last? i've driven it for approx. 145 miles, and i still hear it. i checked my oil level and it's right on target. any ideas? TIA

Clatter noise :confused:

I never noticed any clatter noises after installin the 91 cam

Originally posted by PlanoSER
Clatter noise :confused:



:confused:

I'm not sure what you mean either

there's a constant noise, identical to start-up clatter, that increases w/ my RPMs. i had it installed @ Rosen, and Nick said it would take a little bit for the valve springs and retainers to adjust to the difference in lift and duration of the new cam. but i'm kinda wonderin' how long i should let this noise continue ** i start to worry.

How does it drive? Each time I've installed cam, the sound only lasted for a few seconds. The only time it lasted longer was when I installed the cam in my wife's '97, and the cam sprocket wasn't fully in the "key". When I turned the car on, the sprockets turned, and came out of the key, leaving the cam like it was. Take the valve cover off, and turn the motor by hand. Make sure that both cams turn, and that the chain didn't jump a tooth.

Are you sure its not a spun bearing?? :confused:

Does it sound anything like this (http://www.geocities.com/serban91r/rattle.wav)?

STILETTO!!!!!!

Yo bro, that noise should have only last about 3-5 seconds.
It goes away and then its all smooth sailing from there.
Make sure its not a spun baering like Serban said. A few people spin a bearing after the 91 cam install. I know 3 including myself.
I hope its something simple. I didnt even use a torque wrench when I did my install. :D

good luck!

How do people spin a bearing after a new cam install? I don't see the correlation?

I'm thinking you may need to check / reshim the rocker arms.

For me after my 4 day install (dont ask) the sound is gone after a few seconds and now i feel like i have v-tec power at 4k. I miss my little bump at 3.5k though :(

O

There's no need to reshim after a cam install. I don't think you have to do this after installing C series cams.

Originally posted by eric96ser
How does it drive? Each time I've installed cam, the sound only lasted for a few seconds. The only time it lasted longer was when I installed the cam in my wife's '97, and the cam sprocket wasn't fully in the "key". When I turned the car on, the sprockets turned, and came out of the key, leaving the cam like it was. Take the valve cover off, and turn the motor by hand. Make sure that both cams turn, and that the chain didn't jump a tooth.

it drives fine. i haven't taken it past 4000 RPM, though. i would hope that Nick @ Rosen Autosport got everything in there properly. we even put the car in 5th gear and rolled it back and forth to make sure the install was good.

a little off topic, but i was wondering...
theres a little, well, bump i guess you could say from 3.5k to about 4.2k rpm...its kind of like a power loss, then it comes back on after 4.2 ish...is this normal on a '95? its not huge, but still noticeable....is this what you were talking about onyx?

rcky, that is exactly how mine feels, and boy does it really start to pull at 4k :D

Originally posted by Stiletto
there's a constant noise, identical to start-up clatter, that increases w/ my RPMs. i had it installed @ Rosen, and Nick said it would take a little bit for the valve springs and retainers to adjust to the difference in lift and duration of the new cam. but i'm kinda wonderin' how long i should let this noise continue ** i start to worry.

That noise should only happen once for a few seconds. You need to take the valve cover off and inspect. Make sure all the rocker arms are positioned correctly and the chain is in the guides correctly and all the shims are in place.

Originally posted by jacen99SE


That noise should only happen once for a few seconds. You need to take the valve cover off and inspect. Make sure all the rocker arms are positioned correctly and the chain is in the guides correctly and all the shims are in place.

okay, thanks. :)


one other thing (not that i'm doubting you're experience), but why was i told that it would last for about a hundred miles? ya'll are saying a few seconds and the mechanic (who knows sr20's very well) says otherwise. i'm just a little perplexed.

Was the cam a new one, or used one? Mine was used, and my wife's was new. Neither made noise longer than as few seconds. Take the valve cover off, and double check everything. Its better safe than sorry. Even the best mechanic in the world can miss something.

Originally posted by CNibbana
How do people spin a bearing after a new cam install? I don't see the correlation?

I dont get it either?
:confused:
Maybe its from the EXCITED "LET ME SEE WHAT THIS CAM CAN DO" HARD DRIVING after the install.

I think the shop said that it lasts over 100 miles as an excuse.

Originally posted by CNibbana
How do people spin a bearing after a new cam install? I don't see the correlation?

I'm thinking you may need to check / reshim the rocker arms.


There is no correlation. He's putting 2 and 2 together, with no evidence. :rolleyes: I've had my cam in for 3 years now, and my wife's car has had it for little over 2 years. The cars that spun bearing had issues before the cam install. Quit jumping to conclusions smoothdaddy.

Originally posted by eric96ser
There is no correlation. He's putting 2 and 2 together, with no evidence. :rolleyes: I've had my cam in for 3 years now, and my wife's car has had it for little over 2 years. The cars that spun bearing had issues before the cam install. Quit jumping to conclusions smoothdaddy.

Try getting off your high horse there Mr Moderator.
I was just pointing out something that could have happened. :rolleyes:
But yes my car did have some major issues with cruddy oil with the previous owner.

:rolleyes:

Originally posted by SmoothDaddyFig


Try getting off your high horse there Mr Moderator.
I was just pointing out something that could have happened. :rolleyes:
But yes my car did have some major issues with cruddy oil with the previous owner.

:rolleyes:

That's Mr. ADMIN to you.