How would one make a large diameter bellhousing off CNC starting with a large round chunk? Only bad side I see to this is a really large machining bill.

http://img.photobucket.com/alb...e.jpg
http://img.photobucket.com/alb...o.jpg
http://img.photobucket.com/alb...e.jpg


This is about my Honda V6 mounted to a 4wd transmission this is what I will do for now design and have a CNC flange and cut down the bell on the chrysler NV3350 housing down the line I'll want a 1 peice bell.

 

one piece billet aluminum... that is going to be one expensive peice of material just to start! i'd guess somewhere around $500+ before a cutter even touches it. machining would add probably another $1000+? it can be done but be prepared to foot a large bill.

 

They dont machine the aluminum transmission bellhousings. They are casted aluminum, and final machined after the cast process. We run one that is capable of holding 2300 horses, so dont try to say cast isnt strong!
Kyle

 

i agree with both of the guys above. A billet will be VERY expensive. I would grab a few books on casting. I myself have never done it, but I have heard that it is not a terribly difficult process. You could even cast it in Mg if you wanted. Just watch out for sparks....

 

What about making a sheetmetal bellhousing (material say 1/2" thick)? The way I see it you could get both flanges made, line up the transmission and engine, and then tack in place from there. You'd have to gusset the hell out of it, but I don't see why it couldn't be done. If not in aluminum then maybe in steel.

Similar to this, but maybe not as ghetto looking:
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Here is the custom bellhousing. This is bolted to the bulkhead and contains the 7.5" triple plate clutch and a concentric hydraulic release bearing. The bellhousing is held in by 5 bolts and comes out the same way as the gearbox.

</TD></TR></TABLE>


Modified by daveG at 10:29 PM 12/6/2005


Modified by daveG at 10:30 PM 12/6/2005

 

who is gonna make this 1/2'' sheet metal nice and round?

 

^^ the box shape is doable. I'd even say it's stronger.


Modified by MidShipCivic at 8:03 PM 12/6/2005

 

http://www.seight.com/tom_green.html

Here's a link to the car its in.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by daveG &raquo;</TD></TR><TR><TD CLASS="quote">http://www.seight.com/tom_green.html

Here's a link to the car its in. </TD></TR></TABLE>

Dave G

Might do it this way. It's cost effective. Strength wise it is unmatched. The only downside to it is space thats where the circular shape comes in. That isn't a problem with me though .

 

I second the cast and finish machining. A billet of that size would be some serious cash.

 

&lt; Going for the box.

 

gotta love the box

 

that box bell housing is the ****! i like it.