Re: 440 noise

["65" <65val@xxxxxxxxx>]

Older, true forged pistons produce a slapping noise when the engines cold, and disappears  as the engine warms up. This is due to larger tolerances when building the engine. It is required because forged pistons expand more than cast/hypereutectics.

 

 

----- Original Message -----

From: Herb

To: 1962to1965mopars

Sent: Thursday, March 29, 2012 1:16 PM

Subject: Re: 440 noise

I'm sorry I should have explained, basically blueprinting is what it sounds like, machining every part including the block to factory/blueprint specifications hence blueprinting.  In manufacturing every time a mold or tooling is used it sufferers wear and tare and and eventually degrades to + or - tolerances but the parts created are still usable even though they are very slightly smaller or larger than when the tooling was new.  When you blueprint an engine you machine everything to the exact tolerances specified in the blueprint created by the engineer for the manufacturer to create the actual product.  Thus creating uniformity and even power in all cylinders.  So, if blueprinted it is hand built to specks, loose tolerances & slapping pistons are NOT a byproduct of this procedure.  To the contrary a blueprinted engine is built to tighter specs than one fresh off the assembly line.  Ask the builder to show you the blueprint and specks he built your engine from.  Bet you will have him stuttering and scratching his head.  I bet if you simply pull a valve cover or your intake you will see no machining in the heads or lifter gallery that should be seen if blueprinted.  Now there are a lot of tricks that race engine builders use that are to many to get into now that increase horse power but shorten the engines life and a byproduct is noise.  These tricks are used on race engines not street engines unless you plan to be inside your engine on a regular bassis.

 

 

 

 

      Herb

 

1954 DeSoto Firedome Estate Wagon 276 HEMI

1956 Plymouth Belvedere 361 4-Sale

1959 Coronet 326 Poly

1961 Belvedere Custom Suburban Wagon 318 Poly

1961 Dodge Dart Pioneer Wagon 318 Poly

1963 Fury 2D/HT 7.0L

1963 Sport Fury Convertible 361

1970 Chrysler 300 Hurst 440

1979 Dodge Aspen R/T Sport Wagon 360

1999 Durango SLT 5.9L

2008 SRT-8 Magnum 6.1L

St. Louis, MO.

 

http://1962to1965mopar.ornocar.com/mmo42009.html

 &

http://www.1962to1965mopar.ornocar.com/mmo22012.html

 

 

 

-------Original Message-------

 

From: Jacob Fox

Date: 3/28/2012 6:53:04 PM

To: 1962to1965mopars@xxxxxxxxxxxxxxxx

Subject: Re: 440 noise

 

I'm not sure what's entailed, but he gave me all the paperwork and stuff from shop that did it. Said the looser tolerances allow it to rev faster and generate more horsepower, at the expense of burning a little oil or having a little noise. 

Sent from my iPhone

On Mar 28, 2012, at 6:03 PM, Herb <zephyr9900@xxxxxxxxxxx> wrote:

I have blueprinted several engines and have not had piston slap on any of them.  Slap = wear and egg shaped cylinders.  Just saying!      Maybe they do it differently now days.

 

Do you know what is entailed to blueprint an engine?

 

 

 

 

      Herb

 

1954 DeSoto Firedome Estate Wagon 276 HEMI

1956 Plymouth Belvedere 361 4-Sale

1959 Coronet 326 Poly

1961 Belvedere Custom Suburban Wagon 318 Poly

1961 Dodge Dart Pioneer Wagon 318 Poly

1963 Fury 2D/HT 7.0L

1963 Sport Fury Convertible 361

1970 Chrysler 300 Hurst 440

1979 Dodge Aspen R/T Sport Wagon 360

1999 Durango SLT 5.9L

2008 SRT-8 Magnum 6.1L

St. Louis, MO.

 

http://1962to1965mopar.ornocar.com/mmo42009.html

 &

http://www.1962to1965mopar.ornocar.com/mmo22012.html

 

 

 

-------Original Message-------

 

 

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Please address private mail -- mail of interest to only one person -- directly to that person. That is, send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic. Thanks!
 
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