ricktewagon
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clickety click pinto
Hey guys just rebuilt my pinto run in new cam, changed oil etc, etc the thing is it sounds too "clicky" im gonna recheck the follower adjustments anyway will this quiten it down though?? I am aware they sound a little clicky but mines pretty loud
Thanks
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maxrs
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RE: clickety click pinto
2010/11/28 18:11:10
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New cams must never be run under 3000RPM for the first 10min.
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ricktewagon
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RE: clickety click pinto
2010/11/28 22:23:20
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Yeah I ran in the cam for 20 mins, do you reckn that my symptoms sound like improper run-in??
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maxrs
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RE: clickety click pinto
2010/11/28 23:16:31
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Getting a SOHC cam tolerance right is tricky, not moving the top locking nut while you tighten the bottom nut. is the fun part.
Tap each follower after you check each one.
If it sounds tinny, it will sound like a typewriter when running.
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MK1_Oz
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RE: clickety click pinto
2010/11/29 14:35:56
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quote:
Originally posted by maxrs
New cams must never be run under 3000RPM for the first 10min.
under or over? Not being funny, serious question....
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maxrs
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RE: clickety click pinto
2010/11/29 20:36:08
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quote:
Originally posted by MK1_Oz
quote:
Originally posted by maxrs
New cams must never be run under 3000RPM for the first 10min.
under or over? Not being funny, serious question....
Over three grand. You remove the face off the followers if it idals. I did leave the question for someone in the know.
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ricktewagon
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RE: clickety click pinto
2010/11/30 13:19:20
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I was told by a mate that knows what hes doin a lot better than me no less than 2000 for 20 mins so ran about 2500 for the 20, good u reckn??
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hendo
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RE: clickety click pinto
2010/11/30 19:30:54
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DiD you have valves ground or seats cut or cam bushes changed? Have you fitted new follower arms with the cam ? Pintos can be real $hit fights when the geometry is changed and big cam fitted. just re set your valve clearences carefully and run it again and see or should I say listen.
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maxrs
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RE: clickety click pinto
2010/11/30 19:36:13
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quote:
Originally posted by ricktewagon
I was told by a mate that knows what hes doin a lot better than me no less than 2000 for 20 mins so ran about 2500 for the 20, good u reckn??
I can't see that being a problem. The cam gear tolerance will always change if you don't hold the top nut still. It will loosen 20 thou between the follower/camshaft, when you bottom out the bottom nut.
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spigot
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RE: clickety click pinto
2010/01/12 00:37:35
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How did you set the valve clearance, if you used the "hot" settings then it will definitely tap loudly. Otherwise if you actually had a problem of an eaten lobe you would see it straight away in your oil.
You don't really need to break the cam in. Start the engine without the rocker cover and make sure the spray bar is doing its job. Unless you are running heavy valve springs (100lbs +) with really aggresive lobes it would be hard to wipe out a lobe especially on break in. There really isn't anything to "break in" on a follower style cam. Its more important to prime the oil system but how many people do that.
Break in proceedures are aimed primarily at OHV motors like V8's with flat tappet cams. The revs are to ensure sufficent oil pressure and lifter rotation.
I personally have never seen a flat lobe from incorrect break in, only worn out or damaged from incorrect tolerances.
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ricktewagon
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RE: clickety click pinto
2010/01/12 02:13:50
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What I did was turn it over with no plugs until I had oil at the spraybar (took a while but thats what my knowledgable mate said to do) I did fit new followers with the cam, the tolerances I got from my engine builder who got the cam ground was 12 thou ex, 8 thou inlet unfortunately i work away and have just gone back to work 4 two wks, as soon as I get back ill be re-checking the clearance, it runs well and goes a lot harder than my 6cyl wagon just the clicky noise was pissing me off the cams powerband is 2500-6500 im not 100% but pretty sure the builder woulda give me the "hot" settings
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ricktewagon
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RE: clickety click pinto
2010/01/12 02:20:57
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quote:
Originally posted by spigot
How did you set the valve clearance, if you used the "hot" settings then it will definitely tap loudly. Otherwise if you actually had a problem of an eaten lobe you would see it straight away in your oil.
You don't really need to break the cam in. Start the engine without the rocker cover and make sure the spray bar is doing its job. Unless you are running heavy valve springs (100lbs +) with really aggresive lobes it would be hard to wipe out a lobe especially on break in. There really isn't anything to "break in" on a follower style cam. Its more important to prime the oil system but how many people do that.
Break in proceedures are aimed primarily at OHV motors like V8's with flat tappet cams. The revs are to ensure sufficent oil pressure and lifter rotation.
I personally have never seen a flat lobe from incorrect break in, only worn out or damaged from incorrect tolerances.
so do you reckn that if I recheck the clearances and theyr what I was told 12ex, 8in then the clickys nothn 2 worry about?? it shouldnt do any damege should it ??????
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gazz
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RE: clickety click pinto
2010/01/12 19:32:11
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http://www.pumaracing.co.uk/cam1.htm
better have a read of this RE cam break in procedure. explains it pretty well.
i would definately be double checking the valve train geometry and clearances for the clicking noise.
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dnorris
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RE: clickety click pinto
2010/01/12 20:04:39
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just a thought as its idling use a screw driver as a sthescope and place it along the rocket cover and hear which one's are noisy mark it on a piece of paper and re set those ones hope it helps
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spigot
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RE: clickety click pinto
2010/01/12 23:05:14
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If you use the "hot" settings when the engine is cold it will end up being too loose when you check it at operating temp. It will probably need to be about 2 thou tighter when done cold although loose is ok, too tight will hang a valve.
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