View Full Version : custom valve covers

12-03-2007, 02:53 PM
I have a CNC milling machine, and was thinking about creating a custom aluminum valve cover. Do you guys think there would be a market for these if it turns out good? Also is there any heat issues I should be concerned about? Any input would be great.

12-03-2007, 05:13 PM
interest would probably depend on price and finishing. There might be some interest for knock off hartage or ac schnitzer covers or really unique shit. If you are serious about doing this come up with a price and post the topic on US based forums that get more traffic ie:


12-03-2007, 05:30 PM
I know you have a CNC and probably already know this, but you will need to budget Materials - Quality Aluminum, chemical treatments; Time - template design, custom pattern design (you had better be good with mastercam or similar), time in the machine; Misc - chances of ruining a piece(can you weld aluminum to fix a mistake?), tooling costs/wear. Calculate your ROI and after you've sold a few of the same pattern ^^Hartge or AC Schnitzer^^ then shoot for custom work for more $$$. I have CNCs at my disposal but don't have the time to mastercam anything.

12-03-2007, 05:32 PM
also, as long as you use the right grade of aluminum, you should be ok.
Also, this machining should not be done without liquid cooling on the tool. If the parts heats up too much while cutting, your final product will have some serious deformities

12-03-2007, 06:33 PM
No market for it.

Chris de la Cruz
12-03-2007, 06:42 PM
yeah not too many e30's that are made for "show"

12-04-2007, 12:28 PM
thanks for the feedback.
I'm still going to go ahead and make one. Then i'll see what my final costs are and time it took, and see if I can get a reasonable price for them. I'll show you guys pics first when its done.

12-04-2007, 09:41 PM
sounds good :)

12-05-2007, 10:44 AM
are you going to use a piece of block aluminum and mill the whole thing?
Or are you going to take an existing cover and modify it?

12-05-2007, 01:11 PM
mill the whole thing from scratch

12-05-2007, 02:54 PM
mill the whole thing from scratch

I would suggest using the stock cover and engraving into it...probably sell better because of low cost...

I'd be intrested if you can make this for me...:D