Billet block material ?

Guys,

a billet block, what material is used? please don't say aluminium!

What I mean is it 6061? 6082? 7075?

Thanks

 

block material

Call AJ or Brad Don

 

Recycled beer cans

 

Billet- also means that there was no heat forgeing done..Dave

 

Thanks for replies guys, let me reword the question,

I want to machine a block from scratch but need to know what aluminium is used. No where really specifies it.

 

Block Material

The Dart billet blocks are made out of 6061 material. Managed to find that on thier website. As far as the rest brands, your guess is a good as mine.

 

Great thanks. Its a start.

One other question is around main caps, if made of other material wont they heat at different rate and change shape of main ?

How strong is a aluminium main cap if also cross bolted ?

 

I think most blocks are made out of 6061-T651 and main caps are out of 7075-T6 or 7075-T7351

-Dale

 

material

Right on the numbers!

 

That's great guys many thanks for the replies.

Now to get planning!

While I am at this, take it billet heads are 6061 too?

 

Funny thing about this statement, its partially true.I understand the 6061 material is also used in making beer barrels. Who knew.

Corey

 

I would guess that neither blocks nor heads are made from 7075, as it is not weldable.

 

Agreed, I think its used for rocker stands and possibly the main caps.

 

hope this helps

http://www.aircraftspruce.com/catalog/mepages/aluminfo.php

 

Good on you for having a go.
Just wondering why?
Is it strange engine (rotorary with SBC pistons)
or don't you like what is on offer by others.
and what scantioning body is going to let you run a "relentless" engine (expecially if you are faster than others)

If i tried to by a block of Ally the size of a V8 I could probably be ably to afford a couple of good CNC blocks.

 

Good question! Well we want to design one to be stronger, and billet is strongest.

Nope pretty much standard big block chevy, 4.250 stroke, 4.375 bore,
kobelco blower currently at 15% OD

but one day would like to spin faster so want strong block

Were already faster Not done a proper full pass yet and ran 6,42 at 181mph (alcohol)

Were lucky to have a sponsor that provides us any material including titanium FOC so that side is covered. see www.bretitanium.com (thats our website)

Were not for one minute saying whats out there is no good, far from it, but we can get material and have know how (i hope) to machine one

maybe even new heads too

all will be made in wood/engineering plastic first to make sure we have measured right!

 

As I said, good luck,
May I be the first to say

Send one complete engine to me and I'll test it to see if the oil runs out the rocker covers because we are on the bottom half of the world.

 

a good read

http://www.sme.org/cgi-bin/find-articles.pl?&02fem072&ME&20020204&&SME&

but, my opinion is, unless you're alan johnson you have much more important things you could be improving. just ask the McGee Bros about how willing the sanctioning body is about new ideas.

 

As a former machinist i find this very interesting. Do you have access to blueprints and measurments and toleranses of an aluminium block, or do you have to figure that out by yourself?
Also, what are your thoughts on camshaft diameter and were to place it, skirts on the block, oilpan type etc?
What type of machine are you planning to use for the milling work, and can you buy alumminium billets of that size whitout to much trouble?

Good luck with this project!

 

Not to forget amount the amount of jig plates and tooling that you would need. Granted it would be far less if you had a multi axis mill. To build a block would require a large mill especially on the z ( Keep in mind the z axis need to be the height of the block plus the height of the tool )axis if you had to stand the block on end to do the cam work. Your x and y would need to 23 inches or more. It can be done but the initial investment would be huge unless you had all the equipment. You would also have to very proficient with a 3D cad cam soft ware as in Solid Works or Mastecam to draw the block and create a tool path. In my experience if you cant do that stuff yourself it will be hard to do the work your self. Maybe I am running on and these are things you may already know.