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y block ticking 272 started making what i thought was a manifold leek, so i poured tranny oil down the carb and the smoke exposed the leek at exhaust manifold wich is now fixed .
noise still there i can rev engine 3500 rpm in neutral , NO NOISE then soon as i let clutch out and put motor under load noise appears and is obvious when acccellerating |
Re: y block ticking spark knock? timing?
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Re: y block ticking It's probably not the engine. I would suspect one of the u-joints or transmission. Do you have the bottom flywheel cover installed on the bellhousing? It's not a good idea to drive without that because a rock can fly up in there and get kicked around by the flywheel.
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Re: y block ticking How are the motor mounts? If under load and the motor rocks, it can open up an exhaust leak that is not there when not under load.
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Re: y block ticking it was at 12* i pulled it back to 6* still ticking
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Re: y block ticking fly wheel cover has been off for 7 yrs
u joints seem ok next is motor mounts ... |
Re: y block ticking I once had a tick on my 56 292 that finally turned out to be one of the rocker arm shaft mounting bolts loosened up allowing too much clearance on the rocker arm assembly. Listen at the valve cover to see if that can be eliminated.
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Re: y block ticking yes and i even blocked the wheels with emergency brake on and loaded the motor " no ticking" only while driving
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Re: y block ticking i'll check rocker shafts
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Re: y block ticking Only when driving takes the noise to behind the flywheel. Those U joints may seem OK, but I would bet the price of a U joint that one is bad.
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Re: y block ticking ok ill yank the drive shaft
stay tunned |
Re: y block ticking Tell ya what. Leave that flywheel bottom cover off and drive down a few dusty roads. That flywheel acts as a fan blowing dust right at the starter drive. It'll be no time and your starter drive will be stuck in the disengaged position.
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Re: y block ticking Put car on jackstands under the rear axle. Run it in gear, accelerate while applying brakes to load the engine. Have a helper listen under hood (or elsewhere) to locate the noise.
Terry |
Re: y block ticking I’ll put cover on when I’m sure rear main is not leaking on my refreshed 272
Off to check u joints |
Re: y block ticking drive shaft is off
everything is free ,smooth and no slop so i greased it now reinstalling so now its to run car on jack stands or check rocker shaft and make sure its tight to the head ... |
Re: y block ticking drive shaft is ok
rocker shaft and valve lash is ok i'll have to get help to run it on stands |
Re: y block ticking Are you sure it is not "pinging", caused by poor fuel octane, or incorrect ignition timing? This only happens under the conditions you described.
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Re: y block ticking sounds like a manifold leak , i'll go at it again tommorow
i'm at 6* maybe pull a bit more timing out i only use premium pump and i've put a few tanks recently |
Re: y block ticking have a manual choke? if not set choke part way closed and retry. If you don't hear the noise it's running lean.
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Re: y block ticking Just a WAG but check for a rock in tire tread or a bolt or screw in tread. Good luck, little things cause big problems.
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Re: y block ticking Check for a rock in tire tread or a bolt or screw in tread. little things are sometimes the bigggest headaches. Good luck.
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Re: y block ticking manual says 3* for manual trans
what timing is suggested for 272 Holley 4 barrel tea pot standard trans looking at wet carb and black tail pipes id say its running rich but ill do the choke thing... |
Re: y block ticking Initial advance setting by Ford were very conservative. Most Y's run better at more initial
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Re: y block ticking poured a lot of tranny fluid down carb
so much smoke neighbours almost called fire department good news smoke came out between head and exhaust manifold 6 and 7 new gasket should fix that |
Re: y block ticking paul my Y seems to like it around 12 degreese does that make sence to you
what would you put it at ??? |
Re: y block ticking I run mine 10 degrees (a stick and an auto) and they run good. You won't hurt anything at 12 but road test it to see if your happy with it. Both are warmed over 312's
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Re: y block ticking 1 Attachment(s)
exhaust manifold is warped a bit in the middle i'll try grinding the ends a bit
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Re: y block ticking next is my crankcase vent tube switch to pcv
wr do i get and what kind i guess put hole in valve cover ...etc. |
Re: y block ticking Quote:
From the sounds of it you are expending a great deal of time and effort. If that exhaust manifold is bad ,replace it. There are others to be found with very little effort. By doing so ,you will correct the issue you are having. Attempting to solve your problem with a grinder will most likely result in a completely unusable part, and you will still have the same issue. Same with the PVC valve .There are several threads here that will walk you thru how to go about this. it also tells what type of valley pan you need, or how to "adjust" the one you have. I suggest you slow down and take the time to read them, it will save you a lot of time and aggravation down the road. |
Re: y block ticking If you going to salvage the manifold have a shop surface it. And put a straight edge on the head. Ford shipped new cars without exhaust gaskets, just flat surfaces. You’ll find a lot of manifolds with the end ears cracked off from trying to over tighten them on the gaskets that come in gasket sets. There’s some high temp RTV products that’ll live on headers that might help.
Recent article on PCV on yblocksforever. Part numbers, etc. Valve cover or valley pan, don’t ignore the baffles. http://forums.y-blocksforever.com/Topic164478-1.aspx |
Re: y block ticking Depending upon where you live, you might be better off taking that exhaust manifold to a local engine rebuild shop and have them mill the bad surface down flat. Then you won't need to find a used manifold that may have problems of it's own.
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Re: y block ticking how do i put a picture in my profile
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Re: y block ticking Lot of BS on using gaskets on the exhaust manifolds. Yes, Ford did not use them. However, things get changed around, the disparate parts do not always fit precisely. Especially things that go through hot and cold cycles all the time. I use gaskets on the exhaust manifolds on my Y's. Never broke a manifold. Have to be careful when tightening them down, in a sequence like doing a cylinder head or an intake manifold. Start from the middle and go out. Don't tighten them up full bore the first time. Do it in steps.
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Re: y block ticking Do you mean a picture under your name? That is an avatar.
At the top, click on User CP Under settings, click on "Edit Avatar" Click on circle under Custom Avatar If you want to use a pic on your computer, click on "Browse" Go to the picture on your computer you want to use and click on it. Then click on "OPEN" at bottom. The picture name will appear after "BROWSE" Click on "save changes" THis will do it (if you have Windows). May be different if you have Apple. Quote:
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Re: y block ticking Check for rocks stuck in treads of tires.
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Re: y block ticking thx Paul
as you can see i finally got my picture up. Ticking noise is gone new gasket and orange high heat gasket maker and i torqued # 7 exhaust first wr it was a bitt worped i'll watch for another manifold |
Re: y block ticking 3 Attachment(s)
If you look closely at the bolt holes to the head you'll see that all but one hole is larger than the bolt diameter. Pretty sure this is to allow the manifold to expand and contract as it heats & cools, helping to take stress off so it's less likely to crack. Another reason the bolts shouldn't be over tightened.
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http://www.y-block.info/casting/exhaust.html . |
Re: y block ticking your back
i wondered wr you wr your usually the first one to answer my problems and yes i'm torquing small whole first # 7 exhaust is my problem i think i know wr there is a 56 manifold good to know 57 may be different |
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