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Opinions on engine noise please #1707640 12/07/14 12:09 PM 12/07/14 12:09 PM
Joined: Nov 2014 Posts: 166 Massachusetts R Row_your_own OP member
Row_your_own OP member R Joined: Nov 2014 Posts: 166 Massachusetts	383 with what sounds like either piston slap or rocker noise? 1969 Plymouth Road Runner C-179280: http://youtu.be/RAhpJZo6geE 1968 Road Runner 383 4-speed Factory BB1 black on black

Re: Opinions on engine noise please [Re: Row_your_own] #1707641 12/07/14 02:22 PM 12/07/14 02:22 PM
Joined: Jan 2003 Posts: 4,588 St. John's Newfoundland 440newport master
440newport master Joined: Jan 2003 Posts: 4,588 St. John's Newfoundland	Just a guess, but to me it sounds like piston slap. I have a 400 that sounds similar to that just not quite as bad. I hate it because the car sounds cool out back, then you walk up to the hood and it sounds like a diesel.

Re: Opinions on engine noise please [Re: Row_your_own] #1707642 12/07/14 02:27 PM 12/07/14 02:27 PM
Joined: Jan 2003 Posts: 75,047 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,047 U.S.S.A.	I've never heard piston slap so I can't say but that does not sound good. I could almost be rockers hitting the baffles but there would have to be a big cam and adjustable rockers for that ???

Re: Opinions on engine noise please [Re: 440newport] #1707643 12/07/14 02:27 PM 12/07/14 02:27 PM
Joined: Nov 2014 Posts: 166 Massachusetts R Row_your_own OP member
Row_your_own OP member R Joined: Nov 2014 Posts: 166 Massachusetts	Yea, I was leaning towards piston slap. Ugh... 1968 Road Runner 383 4-speed Factory BB1 black on black

Re: Opinions on engine noise please [Re: JohnRR] #1707644 12/07/14 02:31 PM 12/07/14 02:31 PM
Joined: Nov 2014 Posts: 166 Massachusetts R Row_your_own OP member
Row_your_own OP member R Joined: Nov 2014 Posts: 166 Massachusetts	Quote: I've never heard piston slap so I can't say but that does not sound good. I could almost be rockers hitting the baffles but there would have to be a big cam and adjustable rockers for that ??? at first blush I thought is was rocker noise. Almost like shafts put on incorrectly. Exhaust note is mild so large cam out of the equation. It's too bad, its a pretty clean car. Too much money with a suspect engine. Last edited by Row_your_own; 12/07/14 02:38 PM.

Re: Opinions on engine noise please [Re: Row_your_own] #1707645 12/07/14 02:37 PM 12/07/14 02:37 PM
Joined: Jun 2008 Posts: 3,916 usa L lewtot184 master
lewtot184 master L Joined: Jun 2008 Posts: 3,916 usa	piston slap is a knocking sound. depending on the material the piston is made out of can have an effect on how pronounced the noise is. piston slap is a given with a high performance piston with a straight pin. if noise goes away as engine temperature increases and the engine does have a straight pin piston, then i wouldn't get my panties in a bunch over it. i tried to listen to the video, gave up after 2 minutes. why would you ask somebody to diagnos a noise with the music blairing!

Re: Opinions on engine noise please [Re: Row_your_own] #1707646 12/07/14 02:39 PM 12/07/14 02:39 PM
Joined: Aug 2005 Posts: 11,543 chicagoland,usa B buildanother I Live Here
buildanother I Live Here B Joined: Aug 2005 Posts: 11,543 chicagoland,usa	If it quiets down after 3 or 4 minutes or so, It would be pistons rocking around in the bores. It does sound a little extra loud even so. If it does quiet when warmed completely, it may run for many years like that.

Re: Opinions on engine noise please [Re: lewtot184] #1707647 12/07/14 02:45 PM 12/07/14 02:45 PM
Joined: Nov 2014 Posts: 166 Massachusetts R Row_your_own OP member
Row_your_own OP member R Joined: Nov 2014 Posts: 166 Massachusetts	Quote: i tried to listen to the video, gave up after 2 minutes. why would you ask somebody to diagnos a noise with the music blairing! car isn't in my possession but thanks for the effort. 1968 Road Runner 383 4-speed Factory BB1 black on black

Re: Opinions on engine noise please [Re: Row_your_own] #1707648 12/07/14 07:22 PM 12/07/14 07:22 PM
Joined: Jan 2003 Posts: 15,800 Jefferson State S srt ESYC
srt ESYC S Joined: Jan 2003 Posts: 15,800 Jefferson State	rule #1 - in considering buying (from a dealer) is beware. with that, I'd recommend a trip to inspect what you are considering or thorough inspection of the car by a qualified shop of your choice.

Re: Opinions on engine noise please [Re: Row_your_own] #1707649 12/08/14 02:14 PM 12/08/14 02:14 PM
Joined: Jan 2003 Posts: 75,047 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,047 U.S.S.A.	Quote: Yea, I was leaning towards piston slap. Ugh... why would you say ugggh , rockers hitting the covers is an easy fix that doesn't require rebuilding the engine ... Hopefully you aren't stupid enough to buy this car sight unseen?

Re: Opinions on engine noise please [Re: JohnRR] #1707650 12/09/14 06:18 PM 12/09/14 06:18 PM
Joined: Nov 2014 Posts: 166 Massachusetts R Row_your_own OP member
Row_your_own OP member R Joined: Nov 2014 Posts: 166 Massachusetts	Quote: Quote: Yea, I was leaning towards piston slap. Ugh... why would you say ugggh , rockers hitting the covers is an easy fix that doesn't require rebuilding the engine ... Hopefully you aren't stupid enough to buy this car sight unseen? Your answer to first question is I was saying ugh in regards to assumption that noise is piston slap, not the rockers hitting the baffles. Second question, before I spend $350.00 to have car inspected I asked for opinion, not diagnosis on engine noise.

Re: Opinions on engine noise please [Re: Row_your_own] #1707651 12/09/14 06:46 PM 12/09/14 06:46 PM
Joined: Nov 2006 Posts: 356 NE M moparpoolman enthusiast
moparpoolman enthusiast M Joined: Nov 2006 Posts: 356 NE	I have a 440 that has piston slap when cold and even when it gets up to temp it still makes the noise until it's driven. I would test drive the car after it's to temp and get on it hard through the gears. After a hard drive the noise should go away or be much less if it's piston slap.

Re: Opinions on engine noise please [Re: Row_your_own] #1707652 12/09/14 08:13 PM 12/09/14 08:13 PM
Joined: Jan 2003 Posts: 75,047 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 75,047 U.S.S.A.	Quote: Second question, before I spend $350.00 to have car inspected I asked for opinion, not diagnosis on engine noise. An opinion is like a diagnosis in this case I would think ?????? Good luck ...

Re: Opinions on engine noise please [Re: Row_your_own] #1707653 12/09/14 10:50 PM 12/09/14 10:50 PM
Joined: Nov 2006 Posts: 356 NE M moparpoolman enthusiast
moparpoolman enthusiast M Joined: Nov 2006 Posts: 356 NE	I once drove all the way to MN to buy a car which was suppose to be in great condition and had a Galen report that sounded great. After driving 22hrs with my truck and trailer, I saw the car in person and knew within minutes I wasn't buying the car. Drove another 22hrs home, 1 nap for 4 hrs along the way. It was a long 48hrs. Yes it was a big waste of money going there but THANK GOD I didn't buy it sight unseen! If you have to, fly there, rent a car, see it, and make your decision.

Re: Opinions on engine noise please [Re: moparpoolman] #1707654 12/10/14 12:17 AM 12/10/14 12:17 AM
Joined: Jan 2003 Posts: 15,424 Omaha Ne T TJP I Live Here
TJP I Live Here T Joined: Jan 2003 Posts: 15,424 Omaha Ne	Engine noise??? yes it has. Cause?? to be determined. The car looks OK in the video but has several OBVIOUS flaws besides the "engine noise" Depending on the price it may or may not be worth pursuing. As someone stated if its at a Classic car dealer www.tandmautomotive-omaha.com

Re: Opinions on engine noise please [Re: TJP] #1707655 12/10/14 03:28 AM 12/10/14 03:28 AM
Joined: Sep 2009 Posts: 1,377 Tennessee WyleECoyote pro stock
WyleECoyote pro stock Joined: Sep 2009 Posts: 1,377 Tennessee	HELL-O? Obvious!! DUH. Wile E. Coyote Super Genius, Lover of FCA US LLC Products ************* 68 Road Runner (440 4-spd), 71 Superbee (383 slap), 71 Charger 500 (383 4-spd wA/C 1of 182), 72 Imperial, 74 Charger SE (440 sunroof), 84 D350 Crew-cab Dually (440), 75 D300 Dually Tandem (318 4-speed)

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