Imfast101

Hey guys. New to forum! Okay, I recently purchased a 67 Plymouth bel. 440 6 stroked to 498. Racer brown custom cam, Ross pistons eagle rods, Edelbrock alum heads n intake. Blueprinted etc. got a loud tap/ knock in head. Used a hose to ear, seems like its coming from middle of head. Any ideas? It's got 300 miles on motor.

bremereric

Piston slap. Rocker arm noise. Bent pushrod. Valve hitting top of piston, coil bind and lots more. Have you talked to the person you bought it from. Try getting one of those stethoscopes from an auto parts store and see if you can pin point. Both heads, all cylinders? Is it a ticking noise or a thumping or knocking noise?

PK1

diito on the stethoscope. Almost impossible to narrow that down with naked ear or hose trick.

Check the Exhaust manifold or header flange too.

Imfast101

Yea one bolt on header in front was so loose I could tighten it with finger. But it's def inside valve cover. Guy seems to think its an adjuster that may have backed off. I have a video of it but I'm not sure if I can post a video on here? I'm at work and stupid iPhone won't let me post to YouTube, if y'all send me yalls emaili can email it.

bremereric

And there are cheap roller rockers that are noisy also. That's why you need to be more clear on tick tock or rolling rock.

Imfast101

Maybe a really fast tick tock? So hard to explain noises lol. It's kindve deep sounding.

bremereric

On both sides? Take a valve cover off and have a look see.

Imfast101

Just driver side, middle it seems. I'm at work now, I will first thing tomm. I'm wondering if oil level would cause it? I've been tryin to figure out how much should go in, just changed oil, put 5 qts, it was under add line. Got with guy he said its like 5.8 quarts, he has wind age tray so slight overfill Wouldnt hurt. I added another quart, and it's still slightly under add line. Hmmmmmm. Using 20-50 Val syn. I'm down in Louisiana and it doesn't get driven in winter. Gets about 65 lbs running 25 lbs idle.

Imfast101

I just noticed your in Houston! I'm in lake Charles, where everyone comes to gamble lol

PK1

Pull Valve cover. Look for rocker wear mark where it hits the top of the Valve Cover?
There are some rollers that are noisy. But it would be uniform in noise pattern
Check valve tip witness marks for uneven wear pattern. If you side load the valve in the guide it will accelerate wear thus creating noise.
Make sure the springs on the heads are spec'd to the cam. I dont know what lobe Racer Brown you have but new technology in lobes lifts and closes valve quicly and in addition to float at higher rpms you have loss of contact in the VT at idle as well.

Imfast101

Pulled covers checked rockers, they are Rock solid. The push rods spin with a little drag like they are supposed to. I noticed two dents in the valve cover where rockers were hitting the baffle in the back of cover. I took a hammer and dented it in just a tad. I ran it without cover, still hear the same thing. Everything looked great though. I put cover back on and it was a lot quieter, and the motor hasn't even got to 130 degrees yet. Got good oil flow thru all the rockers. It was just beautiful haha. Hmmm so now what? Leave it alone and just enjoy it? Or worry about it and scream Whyyyyy and get it looked at? Should I change oil to a 15-40 instead of the 2050 Val syn? Trying to weigh options without having to pull intake and valley and all that jazz :-/*

Imfast101

I'm headed right now to grab the binder with all the part manuals and stuff for the engine. I know the cam card is in there. I'll report what it is.

bremereric

You need to put about 200 miles on the motor to seat the rings before using synthetic oil. Make us a video of it with your phone or camera. Save it to your computer then upload it to youtube. Copy the url of the video and paste it into your post.

Imfast101

Pretty sure I solved it. After denting in that baffle a little, and checking oil. The guy said its a 5 qt Pan at first I took his word. Did some research there's a 5 or 7 qt pan. He had a smaller filter on it, I put a Mobil 1 m301, the one it calls for, and added another quart. Checked it, a little ways below add line. That was at 5 qt. I added another quart it brought it right to add line. So I added the 7th quart. Perfect. I thought that pan looked a little big to be a 5 qt pan. Anyways, fired it up, let it run for a sec turned it off. Cranked it again no noise. U can just hear roller rockers and all the components making their normal noise. So yay! Lol the valvoline people said it has all the additives a flat tappet needs.*
The amsoil people and valvoline both said that runnin syn doesn't hurt a new motor at all, it just may take a little longer to seat everything than a conventional cause of the superior anti wear. So I think I'm fine....for now haha now I just have a loud rap when I try to start at random times, I think the header heat has got to the starter. Guess I'll be changing that next! Anyone got advice for a good starter that'll work with the headers right next to it? Idk if they make a blanket or shroud for one.*I'll upload video tonight. Before and after. It definitely sounds amazing lol

69POLARA383

http://www.summitracing.com/parts/PWM-9513/

This is what I'm using with my 440 and LT headers from Heddman. No problems here...

Imfast101

http://www.youtube.com/watch?v=55p5h...e_gdata_player

Hey guys, theres video of the noise. Mopar guru over here said its piston slap an it's normal in this motor cause of the way it was built, blueprinted for a little looser clearances for more horsepower. I found spec sheets on Ross, cam, and pistons. All were laser miked and weighed.

bremereric

On a stroker motor shorter skirts on the pistons and floating pistons usually cause piston slap when the motor is cold. It should go away when the motor comes up to temp.

Imfast101

Yea it goes away when it gets to operating temp.

scotts74birds

Just throwing this out there, so you put 7 quarts in? But it was tapping with only 5 in it? Is the pan deeper than stock? A 7 quart pan holds plenty of oil so that more can be up-top at high rpms, and still have reserve. I'm wondering, is the pick-up deep enough for the pan? Deep pan, shallow pick-up, get it?

Silverick

That Belvedere sounds like fun!

bremereric

Same typical cold engine noise my buddy Paul's 520 stroker motor makes. Mine might be a little more noisy this time since my new rods support floating pistons.