bigwheel1983

I believe this is where my question should start because the B20 engine that I will build is a "hybrid."

First off - I contacted Endyn about there block post kits. I am told they no longer sell these any longer. No big deal. The website states that the posts are made of 356-t6 aluminum. After some searching I have found that there is also a A356-t6. Is there a difference between these two alloy's? I know that T6 designates the "curing" process but that's it Could someone please tell me if these two names are for the same material?

2nd question - what is the thread form used for these so I can get a Die and make them. The slotted ends look like a hacksaw blade cut.

3rd question. At what position do you place these posts or how could you calculate the points at which the most thrust is placed on the cylinder
Thanks for your time
Please no posts about your opinions on this technique

thehoustonian

http://www.theoldone.com/articles/ba...r_Finish_1.jpg
picture example of posting

article explaining posting
http://www.theoldone.com/articles/badtothebone/

"Since as noted above, these blocks are a bit on the fragile side, I’ll use the old NASCAR trick of “posting” to improve its survival rate. BTW, as a point of interest, there are all sorts of clowns in the import industry claiming to have invented “posting”, but if they weren’t old enough to be building engines in the late 60’s, they’re liars because “posting” had it origins with attempts to strengthen Ford blocks and heads back then. Hell, after looking at some of the hand-built race blocks from the first half of the 20th century, “posting” probably began much earlier than that.

The posting process involves machining and tapping holes in the thrust sides of the block and torquing in threaded aluminum “posts” that physically “connect” the outer part of the cylinder with the outside (peripheral) walls of the block. With these “posts” installed, if the cylinder walls are going to move, they have to move the outside walls of the block too, so they add a tremendous amount of strength, making the block capable of withstanding a lot of abuse. This modification also has no ill effect on cylinder cooling, which is something I’m big on these days."
---annnnd text from the article explaining posting

http://www.devcon.com/products/produ...id%20%28F-2%29

http://www.devcon.com/products/produ...utty%20%28F%29

those are liquid aluminum to seal the post once you actually put aluminum stock into the block

endyn stopped selling their posting kits, but maybe you can contact them to find the RIGHT aluminum to use, one which will have similar heat expansion characteristics

http://www.muller.net/sonny/crx/engine/posted.html

detailed thread with pictures!

hope that helps

thehoustonian

lol sorry man didnt read the thread, you knew most the stuff, but still found some pictures and a site with semi instructions

http://www.eaglefastener.net/metric-...eaded-rod.html
supplier maybe?

xzodiackillerx

its 3/8 threaded rod not metric ..

Bense

But it doesn't have to be

battlecrxT

iTrader: (1)

BACK FROM THE DEAD! (Creepy zombie Hollowseve music playing in back ground)

Spoke with "The old one yesterday", and it is A356-T6. Get a rod of it, take it to be machined to any speck you want.