AERA Engine Specification Sheets

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KULTULZ
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AERA Engine Specification Sheets

Post by KULTULZ » Tue 28. Sep 2010, 06:06

I finally got up off my lazy butt and contacted AERA (Engine Rebuilders Association) for information pertaining to spec. sheets and if such a thing was available. The guy was really friendly and accomodating and said he would send the pertinent sheets (58/65 and 66/68) for the MEL engine. No charge even...

What I received shows they have as little spec. information as the rest of the industry. It must be an entirely forgotten engine. Very few specs. The 1958 MERC Shop Manual I have has more information.

Anyways, it states the Deck Height as 10.170" (258.318MM) C/L of main to deck. Main to cam bore distance 5.044" (128.118MM). Connecting rod center to center distance 6.600" (167.64MM). Piston pin height is not given.

The sheets also do not give the differences in early (1958) heads and those that followed as MEL had many engineering defects and heads and camshafts were superseded. This information is contained in factory TSB's of the era that I need to find copies of.

Neither differences in CR, head port size or valve size is given. I suppose this information will have to come from each appropriate year shop manual.

I am going to try and retrieve more information and construct a chart so that enthusists will hopefully know what they are looking at when purchasing used parts or planning upgrades.

Just thought I would update you.

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KULTULZ
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Re: AERA Engine Specification Sheets

Post by KULTULZ » Tue 28. Sep 2010, 06:07

Formula For Determining Piston Pin (Compression) Height

http://www.rosspistons.com/custom_compr ... height.php

"Block Height minus 1/2 the crank stroke, minus the rod length, minus the deck clearance (amount piston is "in the hole")."

1958 430CI Shop Manual Specs

Crank Stroke 3.70"
Conn. Rod Length 6.599-6.601
Deck Clearance .009-.025

BTW- This piston manufacturer still offers forged aluminum pistons for performance applications. EGGE offers cast aluminum for stock applications.

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Re: AERA Engine Specification Sheets

Post by hawkdouble » Tue 28. Sep 2010, 06:08

Originally postet by "Mark "

EGGE pistons?? Where would I find EGGE pistons? Are they availible in oversize? Is EGGE the manufacturor? Do they have a website? What are the costs on a set? Where are they made?

thanks,
Mark Piechowski

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KULTULZ
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Re: AERA Engine Specification Sheets

Post by KULTULZ » Tue 28. Sep 2010, 06:24

Sorry Mark,
I assume for some reason everyone is on the same page I am while thinking out loud...
http://www.egge.com/
Great source for older engines...

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Re: AERA Engine Specification Sheets

Post by alternate » Tue 28. Sep 2010, 06:24

Originally postet by "gary477 "

10.17 is FE block deck height
The MEL block deck height must be greater than 10.17 . Take the 1958 430 CID, for example, the piston compression ht is approx. 2.00, the deck clearance is between 0.009-0.025, call it 0.017, con rod is 6.60, half the 3.70 stroke is 1.85. 2.00 + 0.017 + 6.60 + 1.85 = 10.467 deck ht at the valley side edge of the cylinder. 10.467 + 0.379 = 10.846 deck ht at the cylinder center. Note that the MEL valley side deck ht varies with the bore diameter - it decreases as the bore increases. A spec for MEL deck ht is useless unless it specifies where the measurement is taken - edge or center. An edge deck ht spec should specify the bore dia as it makes a difference. Thanks, KULTULZ, for the effort.

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KULTULZ
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Re: AERA Engine Specification Sheets

Post by KULTULZ » Tue 28. Sep 2010, 06:33

Like I Said,
No score for this post December 3 2004, 7:34 AM

I was very disappointed in the material(s) received. Whether it is accurate or not is only going to be verified by one actually having a block to take measurements off of.

Like you say, the sheet calls for the measurement at the C/L OF MAIN TO DECK. Exactly where at the deck?

Maybe this spec will help you;

MAIN TO CAM BORE DISTANCE 5.044" (128.118MM)

Hopefully, I will stumble across the needed information.

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KULTULZ
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Re: AERA Engine Specification Sheets

Post by KULTULZ » Tue 28. Sep 2010, 06:34

You Know Gary...
I wonder if the deck height is measured to the inside of the cylinder bore as this is where the actual quench area is? To calculate proper deck height you would then use a formula to allow for the ten degree cut in the deck (to say square the block on a machine)?

Broken link to photo (Kultulz can you edit?)

It seems this would be neccessary to know what pistons to use (there must have been many different ones as the CR seemed to change from year to year).

How far have you come in your research? I know I am lacking on mine...

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Re: AERA Engine Specification Sheets

Post by alternate » Tue 28. Sep 2010, 06:36

Originally postet by "gary477 "
Just got 58 Lincoln shop manual from Kanter
Its a real treasure trove of specs, but doesnt have piston pin height, or block deck height. The purpose of my research is to contemplate in detail the prospect of putting the 4.50 x 3.75 - 477 and 4.50 x 4.20 - 534 Super Duty bore x stroke - cubes into a custom MEL engine. Both the MEL and Super Duty have angled block decks ( SD 13 degrees ), so they have a lot in common.

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Re: AERA Engine Specification Sheets

Post by KULTULZ » Tue 28. Sep 2010, 06:37

Super Duty Engine Series
I think you are going to find very little in similiarity between the Super Duty (401/477/534) and FE/MEL series of engines. This engine series was very large and meant for heavy trucks of that period (58/ ).

Broken link to photo (Kultulz can you edit?)

The 430 MEL can be poked and stroked to well over 500 cu.in..

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Re: AERA Engine Specification Sheets

Post by alternate » Tue 28. Sep 2010, 06:39

Originally postet by "gary477 "

Super Duty 5.25 bore spacing - 1032 lbs for the 534
What I had in mind for the 477 MEL and 534 MEL : 477 MEL - 450 HP - 1.80 pin ht, 0.0333 deck clearance, 6.825 con rod length, 1.82 rod ratio, 10.5333 block deck ht at valley side edge of cylinder, 10.93 block deck ht at center of cylinder, 2.25 intake valve, 1.875 exhaust valve, cross-bolted #2,#3,#4 main caps. 534 MEL - 500 HP - 1.80 pin ht, 0.0333 deck clearance, 7.35 con rod length, 1.75 rod ratio, 11.2833 block deck ht at valley side edge of cylinder, 11.68 block deck ht at center of cylinder, 2.30 intake valve, 1.90 exhaust valve, cross-bolted #2,#3,#4 main caps.

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