BEL vs APB

[Monty23]

Now you are getting somewhere! I like the idea, wonder how applicable it could be.

Aluminum caps do work. We've been racing big block mopars forever and have never broke a block. We use B1 Original heads an make 850 to 900 hp depending on whether we're running gas or alky. If you run both steel rods and caps you will break the block webbing sooner or later Billet caps seem to work if you run aluminum rods, but for the block to live you have to have a dead blow type of material in the mix somewhere.

source: http://www.speedtalk.com/forum/viewt...=aluminum+caps

and this is a good read:
http://www.bcrproducts.com/maincaps.html

[rtl5009]

Bridges use expansion joints. Tall Buildings sway in the wind.

[jibberjive]

I think it's pretty intuitive that if a pressure spike happens before TDC, the force is being applied in the wrong direction.

Not sure about the caps but aluminum rods can handle more cylinder pressure due to the amount of plasticity the material allows.

I think you meant to say elasticity rather than plasticity?

Sent from my SGH-M919 using Tapatalk

[Scotty@Advanced]

I think it's pretty intuitive that if a pressure spike happens before TDC, the force is being applied in the wrong direction.

I think you meant to say elasticity rather than plasticity?

Sent from my SGH-M919 using Tapatalk

Probably a better term yes.

[jibberjive]

Probably a better term yes.

I figured it was a slip, considering that the terms have pretty much opposite meanings.

[Mocke]

Very interesting.
My question is: How do we know were the MBT is simply when tuning? When do i know, now it is too much timing??
And second question is: Does boost has to do with it?
If i have more boost - i need to turn timing down?

[Mocke]

I was running about 35degress.

35 deg at the highest load??? That is just insane much timing
What did you have at redline?
This is on 100% Ethanol i guess??

[Meow]

I think it's pretty intuitive that if a pressure spike happens before TDC, the force is being applied in the wrong direction.

Neither you nor julex mentioned it. Also neither of you mentioned specifics of the additional stress (what part is being stress and in what manner, tension, compression, torsion). Well, julex tried but only came up with "when they are all in line the force is down"

[jibberjive]

You don't need to post leading questions to give yourself permission to further post whatever you would like to put out there. Rather than posing a question and acting like you are correcting someone when they didn't answer it in the manner you had hoped ("It has to do with burn duration, combustion pressure and geometry of the rotating assembly" is correct btw), you can save yourself some time and just post whatever you are wanting to post from the get-go. But that probably wouldn't make you feel as cool as you were hoping.

Sent from my SGH-M919 using Tapatalk

[kramrs2]

35 deg at the highest load??? That is just insane much timing
What did you have at redline?
This is on 100% Ethanol i guess??

yes, 100%ethanol
about 45o at redline

[Meow]

yes, 100%ethanol
about 45o at redline

bumping an old thread with this but holy fuck... 35 degrees at peak load and 45 at redline!!!??!!!!!! you are nuts.

[the dog]

Will get some data this time using my TFX cylinder pressure monitoring system to see at what deg. and how much pressure we have , and post them here....