new vibration / sound cause?

[RECHRGD]

I've picked up a new noise up front.  It's a ticking sound that seems to increase with engine speed.  I can't see anything obvious causing it, but did notice that there is a little play (in and out) where the pulley goes into the power steering pump.  I never noticed that before and wonder if that may be the source of the problem.  I'll pull the belt the next time I drive the car and see if the noise goes away.  Is some play in the pulley normal?  Thanks, Bob

[NYCMille]

Could be a bunch of stuff...

- exhaust leak
- cracked header
- valve train

... or maybe you just have a rock stuck in your tire tread, had that happen to me and drove  me crazy for about 60 miles...

[RECHRGD]

Thanks Mike!  The valvetrain is noisy after the new cam/lifter/rocker arm swap.  This noise is a little different and seems to go away under power.  At first I thought it was the speedometer cable, but the needle is not jumping and I couldn't feel any vibration in the cable itself while driving.  Bob

[FLG]

hot? cold? both? Does it do it just driving or also standing still? Loose flex plate bolt could be the culprit.

[Runner]

loose converter bolt was my first thought.   you went solid lifter cam didnt you? id just my lash for piece of mind  if its not a converter bolt.   also ive had the dust cover on the tranny get hit before with out having a loose converter bolt when it didint get installed correctly.

[RECHRGD]

Sorry I haven't been able to deal with car stuff lately.  I'm still in the middle of remodel hell.  I went and drove the car today.  I took off the power steering belt and nothing changed.  I paid off some kids at the local Jiffy Lube to let me drive the car over their work pit so I could look under the car.  I took off the inspection plate and there was no evidence of it getting hit by the bolts and everything seemed tight.  I could just chock-up the new vibrations to the fact that I installed all new Schumaker motor and tranny mounts, but it does seem excessive.  I can feel vibrations in the steering with or without the belt in place.  I can feel driveline vibrations at different speeds, but I think that is still pinion angle issues to do with the Gear Vendor installation.  Since the new mounts went on, I'm now feeling a vibration in park when revving the engine around 2500 rpm.  All this with the new noisy valvetrain and leaky tranny has me kind of down on the car right now.  I know everybody says that the ticking is normal for my build but I just cannot get used to hearing the lifters (I think) clicking away while going down the road.  I even called Comp Cams to confirm that all was OK and they said that my lifters (Comp pro magnum) act like a solid lifter when pumped up, so they will be noisy.  They said that they should be set at zero lash, so I took the car back to Brian's to have them make that adjustment and re-dyno the car.  The car dyno'd about 10 rwhp less than when started up, but we decided that was the difference between a 99 degree day and a 63 degree day.  I'm thinking of changing the lifters over the winter.  Any suggestions?  The cam is Comp extreme energy high lift and the rockers are adjustable Crane Golds.

[Runner]

bob, i hate to see you get down on your car.   im not sure about the vibration.  i had a problem sealing up the 2 center exhaust ports on my e heads. the problem is were the head bolt area iis clearanced out,  it doesnt leave much of a sealing surface.  i couldnt get either set of headers ive ran to seal until i went to percy seal for goods. these gaskets flat out seat great.   mabe thats some of your noise.

http://store.summitracing.com/partdetail.asp?autofilter=1&part=PHP%2D66036&N=700+115&autoview=sku

    i think we both run the same headers and the heads are basically the same.  heres a pic i stoled from a guy i know. it shows what im talking about

[RECHRGD]

Thanks Mike!!!  I was able to spend some quality time with the car today and discovered that the headers were making contact with the steering column.  A little heat and a pry bar took care of that situation.  It seems that the 1/10th" width increase on the new heads was enough to cause me all this grief.  Better yet, I re-torqued the header bolts and most of the "lifter noise" went away.    :icon_smile_big:I'm feeling much better now.  The next thing to do is change the tranny oil from the +4 type to regular dextron to try and firm the shifts back up.  Thanks again for your help.  Are you going to make a trip up for some racing before the season is over?  I know that they have run a couple of weekends but don't know how much longer they plan on doing it.  Bob

[Runner]

bob,  glad to hear your noise is mostly leaking headers. i went to spokane this past saturday, there was a pile of cars. id guess well over 200. i had a blast but went out in the second round.  the bathrooms are closed but they have porta potties every were. they brought in about 4 different food vendors. heres a pic of lanes

[firefighter3931]

Bob, just a little sidenote ; the Comp xehl cams do make a little more valvetrain noise as compared to the stock cam. 

It appears that most of your problems have been resolved. I like the Percy's dead soft aluminum header gaskets as well....Mike is dead on right with that recommendation. 



Ron