FE Power Forums
FE Power Forums => FE Technical Forum => Topic started by: fryedaddy on May 02, 2017, 01:16:04 PM
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i have a 428 with 2000 miles on it,ran great,cj heads,pi intake,hooker,msd,comp cam,with no issues.i just changed the heads,intake and rockers to bbm heads,rpm intake and harland sharp rockers with end stands.after install im smoking bad at startup and trickles at idle and im down a little on my oil pressure compaired to before the swap.i noticed my end stands were touching my arp head bolts.i used felpro head gaskets and i forgot to check the tab to see if it needed bent down.i have a pcv hooked up and its pulling vac.could it be sucking oil,could the head gasket tabs be the problem,or could the end stands touching the head bolts be the problem.anyone have any ideas before i try my stock rockers,or pull the intake to check the tabs?
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the first couple times i fired it, it didnt smoke.but then it started.its coming out of both sides too.
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i blows out more smoke when you rev it up too
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If you suspect the pcv, then pull the pcv valve out of the valve cover and see if it makes a difference. You could also pull the valve covers and look at the seam where the intake and head meet. Look at the gasket for something there. If you really want to get involved pull the carb and rocker assembly from both sides. Make a plate to cover the carb and block off all the vacuum ports. Then pull a vacuum and see if it holds. If your lucky you might hear something.
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i unpluged the pvc,no effect on the smoking.i cant hear good,so i dought i hear anything. i dont care to take the intake off if i thought i had a bad seal,and im worried about the oil pressure drop.it was 75 at start up now its 60,and when it warms up its 25-30 at idle,it was near 50 warmed up at idle
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Did the previous set of heads have oil restrictors installed? Maybe your flooding the valvetrain.
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i did have restrictors in my cj heads,but i dont know what to do if im flooding the valve train on the bbm heads,the inserts in the bolt holes threads are sticking up and you cant get a carb jet in the hole
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come on,some of you engine builders chime in.i have run fe engines for 40 years but im no mechanic.im going crazy trying to figure this out.
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If you look at my thread (Intake manifold issues (Oil pooling on valves)), we may be chasing the same problem. My intake is off, and I am leaning towards the head gaskets tabs as the cause.
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Jeff,let me know if that fixes yours.im thinking either tabs on my heads,or the hs rockers or end stands
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how can i restrict the oil to the rockers with bbm heads
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do i need to put any sealer or silicone on my rocker bolt threads and intake bolt threads
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do i need to put any sealer or silicone on my rocker bolt threads and intake bolt threads
I put oil on mine so I get a more accurate torque reading with my torque wrench.
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i thought oil messed with torque readings
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You should go with the head mfg's recommendation for torque values and lube, or use ARPs notes. Not sure about an FE, but for sure the AFD heads on my 351C required thread seal on the intake rocker studs because the holes penetrated the intake port.
Seems to me that the FE has real issues with intake sealing - not that other Ford motors don't LOL. But the FE head/intake seal area being under the valve cover makes it more critical. It'd look at the plugs to see if it was just a couple of cylinders causing the trouble, that would point to either an intake port or possibly a problem with the intake valve seal on that cylinder.
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i took off the harland sharp rockers and put my factory adjustables back on.get this,my oil pressure went back up to 75-80 at startup.with the hs rockers i only had 60 at startup,but its still smoking out the ying yang.its either pooling in the valve covers or i have a bad intake seal,i think.
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any more thoughts on this smoking.im glad i got my oil pressure back,but the smoke aint fixed.i dont know how to restrict the oil to the rockers on these bbm heads.the threaded insert sticks up too high to drop anything in the oil hole.any ideas on this?and any ideas why the stock rockers have 20 more psi than the new harland sharp rockers.the factory rockers are a little worn but the hs rockers are brand new
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i would really like to hear from one of you top builders to see what you think
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Hard to diagnose without a little investigation.
Pull the plugs and see if you can distinguish any difference between cylinders.
If you have access to a bore scope, pull the carb and run the scope down the runners to see if you see oil in the ports of the head, running down the valve stems, etc. 90% of FE oil issues like that is a botched intake gasket install, but there's a small chance it could be a valve seal or guide issue. If it's actually smoking and has a modern ignition system, it's sucking a ton of oil in.
Oil entering the combustion chamber can only come from a few spots. It could come from the ring side, but I find that unlikely, especially since you have just changed the top end. Chances are it's coming from the intake side of things. You just need to narrow it down to a bad gasket install, or bad guides/seals. The head gasket tabs can hold the intake off the head. That's another thing to check.
I don't restrict with factory rockers. I can show you a video of a dyno pull where the oil doesn't even get above the bottoms of the springs.
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the engine is new-1-2 thousand miles on it,so i dont think its rings,its never smoked till i put the new heads and intake on.the heads are new so i dont think it would be the valve guides or seals.i did not bend any tabs down on the head gaskets so i would say that 90% chance of a botched intake install may be it.the plugs all look the same so i dont think its 1 cyl or 2.thanks for the reply.i guess i will buy some more intake gaskets and try to do a better job this time
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Sounds like a gasket issue.
Make sure you glue the gaskets down on both sides too.
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i just took my intake off.i have a puddle of oil in every intake runner.it looks like my head gasket was holding my intake up from front to back.the gasket dont even look like it was crushed so maybe it was sucking oil bad.any comments?