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lifter tick

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tp

06-25-2007 14:32:54




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49 8n up and running after full engine rebuild all by myself and your all's help. (A GREAT BIG THANKS DUE ALL AROUND!) Runs like a top after removing head (knock knock) and grinding for piston clearance.....about .005". Anyway went through archives regarding valve and or lifter tic when running. Opinions vary. I adjusted very carefully when assembling, but who knows. Sounds like #3. Anyway it's not bad but it does vary in intensity from time to time. What would cause it to be loud then almost unnoticable then louder again at the same rpm? Other than charging issues...(like I didn't expect it) it has good oil pressure 25-30 psi, 85-95 psi compression, and runs like a well oiled sewing machine. If I decide to remove covers and re-adjust...anything I should look for except the proper clearance when the valve is seated? Do I need to drain oil?

Thanks again....

TP in ohio

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Jack-Illinois

06-25-2007 16:32:22




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 Re: lifter tick in reply to tp, 06-25-2007 14:32:54  
The changing noise level doesn't quite sound like a valve clearance issue. I would take the cover off and slide a .002" or .003" feeler guage in while it is running. If it stops the noise or quites it down, then I would agree it is a lifter adjustment. If not you probably should start looking elsewhere for your noise. A valve will usually quite down slightly as the engine warms up because of metal expansion, but not get louder again while warm or hot.

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Dell (WA)

06-25-2007 16:18:23




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 Re: lifter tick in reply to tp, 06-25-2007 14:32:54  
TP..... .you write..... ."85-95 psi compression"..... ...on a new rebuild??? that is scary. Ford specs is 90psi min (dry). New rebuild should compression test about +125psi. Better recheck yer compression. Did you alternate your ring-gap across the piston from each other???

You may think it is running like a well oiled sewing machine but right now I'm skeptical ..... ....respectfully, Dell



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tp

06-26-2007 04:42:44




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 Re: lifter tick in reply to Dell (WA), 06-25-2007 16:18:23  
Dell, there you go again, bursting my bubble.....but you make a valid point....just not sure how to proceed from here. Yes I did alternate the ring gags on the pistons. Had the block and head cooked out. The sleeves, pistons, rings, pins, bearings, and entire valve train are new. (w/adj lifters) Had crank reground, con rod bushings line bored, and valve seats re-ground. I'll check my gage with another gage at work to make sure it is correct but is nearly new. The engine did sit for a couple years in my garage, but turned by hand often and a few drops of oil occasionally. I had the pan back off after it ran last week and everything looked good and well lubricated that I could see. I don't think I can get a feeler gage into lifters with the manifold, gov, carb, and linkage in place as suggested by Jack. I will probably re-check clearances and go from there. (After 10 days of vacation!)

Thanks,

TP in ohio

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Dell (WA)

06-26-2007 09:05:27




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 Re: lifter tick in reply to tp, 06-26-2007 04:42:44  
TP..... ...iff'n yer block sat and you occasionally "oiled" it and turned yer crankshaft to spread the oil up and down the cylinder walls, you may just have created the dreaded "stuck-rings" syndrome. Usual cure for stuck rings is either a treatment of MMO or autotranny fluid. I like MMO 'cuz it is a solvent; others like the cheaper autotranny 'cuz it is highly detergent. Either work..... ...Dell

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Dan

06-26-2007 09:01:58




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 Re: lifter tick in reply to tp, 06-26-2007 04:42:44  
I would say to expect 125 psi of compression ONLY after the rings seat. This may take some hours, and some lugging, to accomplish depending greatly on what type of rings you used (iron or chrome) and what sleeves you have in there (steel vs. iron). I always use iron rings as they seat much faster and only wash the cylinders down with a 5w oil on initial startup. After a short initial running, I run my engine again and actually lug it a bit to help seat the rings. I would not take a compression reading until the engine is properly broken in and you are fairly confident the rings are seated.

Just my $.02,
Dan

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arthur ward

06-25-2007 15:54:45




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 Re: lifter tick in reply to tp, 06-25-2007 14:32:54  
tp...what type of oil did you use? have you considered sythetic?



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tp

06-26-2007 04:21:20




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 Re: lifter tick in reply to arthur ward, 06-25-2007 15:54:45  

arthur ward said: (quoted from post at 15:54:45 06/25/07) tp...what type of oil did you use? have you considered sythetic?


I used 20w-50 penzoil which is what I've used for years. I'm not a big synthetic oil fan. Bad experiences in early years in industrial applications. Nasty stuff when overheated.

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