MEL Engine Series Combustion Chamber & Piston Design

Post by **Theo** » Sat 10. Oct 2009, 12:55

Yes, I'm interested in the specs. too. I have an old Dyno 2000 software that is good for any rough estimation. I could post the results as screen shots.

Post by **Shelby#18** » Sun 18. Oct 2009, 09:06

I'm having the motor Blue Printed at this time. I will post as much info as soon as it is available.

Post by **Shelby#18** » Mon 9. Nov 2009, 10:44

Here is the Piston order form for my 1959 Colony Park 430 cu. in. motor.
$1339.24 pistons & rings.

Please klick photo to enlarge (edited by admin)

Chris Craft crazy · Post by **Chris Craft crazy** » Mon 9. Nov 2009, 13:07

Awesome post Rick... really helpful.

reijerlincoln · Post by **reijerlincoln** » Tue 10. Nov 2009, 09:34

Thanks! That should prove helpful to others.

Chris Craft crazy · Post by **Chris Craft crazy** » Thu 26. Nov 2009, 17:39

Here is a question: Was there EVER an MEL engine with flat top pistons? or was that a rebuild/aftermarket mistake?

lblnsd · Post by **lblnsd** » Wed 13. Jan 2010, 12:38

Does anybody have any dyno numbers to show the difference between flat top pistons and original style pistons? I'm trying to justify spending over $1000 for wiseco to make a set. Thanks for your input.

Post by **Theo** » Wed 13. Jan 2010, 13:17

Generally speakin', the flat top pistons will produce a lot less compression. Unless you're shooting for a lame duck, that's not what you really want.
On the other hand flat tops could work fine to a certain extend and you wouldn't have to bother too much with fuel octane quality.
If fuel consumption and proper compression and performance is not your concern, flat top pistons could be an option.
However my thoughts apply to a week end cruiser or a trailer queen. If you want to race, forget what I said above.

Chris Craft crazy · Post by **Chris Craft crazy** » Sat 23. Jan 2010, 15:16

In the process of assembling the appropriate measurements for my custom pistons, I asked my dad to come up with a diagram that would be useful, and typically, he came through in spades..

Thought you guys might be interested.

Once the deck height is established on the intake and exhaust side, and the other relevant measurement are there, here is a spread sheet that will help determine not only the size of the combustion chamber, but also the compression ratio of the engine. Brilliant. I can not determine based on the step size exactly what the change is in compression ratio, and order accordingly. Thanks Dad!

Post by **Theo** » Sun 24. Jan 2010, 12:05

Nice drawing. The piston manufacturers have computer programs that calculate all these things in milliseconds. Do you have the figures at home? Intake side block height and exh. side block head etc.? We might work out a formula to math it out. Just for fun.

MEL Engine Series Combustion Chamber & Piston Design

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