 Head blanks? |
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| alpha434 |
 Mar 21 2006, 01:59 AM
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#61
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My member number is no coincidence.  Group: Members Posts: 3,154 Joined: 16-December 05 From: Denver, CO Member No.: 5,280 Region Association: Rocky Mountains  |
Where can I get some blank head castings? I've got an NHRA friend who thinks he can make some power. And I'd rather not buy a whole block of aluminum.
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| Jake Raby |
Mar 21 2006, 08:40 AM
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#62
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
You're NHRA friend better have plenty of patience.. My Billet head program just went past 3.5 years of development and still has flaws that are being worked out.
Finding the PROPER alloy of Billet was the hardest part, by far. It takes a lot of machine time to whittle it into a head and more time to test it, and I'll bet you 500 bucks that you WILL NOT get it right the first time. As for the new castings, we have to buy the heads 100% complete from Spain to get them, the factory finishes them up so a blank casting is out of the question- I have been trying to persuade the factory to do that for 5 years now. We take the new castings, rip out the valves, guides, seats and etc and start from scratch with our own components as the factory components are horrible. This can all be done and we have done it, BUT you better be ready to swallow a lot of cash to get something that even functions correctly, much less runs cool enough. Thermal conductivity of different alloys is drastically different and you'll find this out very quickly. A good welder can do anything with a head casting, proper preheating and post cooling are mandatory and it takes experience to know what "proper" is for these heads... |
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Posts in this topic
alpha434 Head blanks? Mar 21 2006, 01:59 AM
McMark Here
I believe they are based on bus castings. Mar 21 2006, 02:03 AM alpha434 I meant raw castings. No holes in 'em yet. I... Mar 21 2006, 02:04 AM McMark Nope. Get out the welder, make your own castings,... Mar 21 2006, 02:06 AM alpha434 Unless aircooled technology would sell me a raw ca... Mar 21 2006, 02:07 AM alpha434 Mar 21 2006, 02:09 AM McMark What holes were you referring to, that you would c... Mar 21 2006, 02:09 AM McMark ... Mar 21 2006, 02:10 AM alpha434 Hmmm.... I guess that works in a pinch. The proble... Mar 21 2006, 02:15 AM davep ... Mar 21 2006, 06:34 AM Racer Chris ... Mar 21 2006, 08:24 AM Part Pricer http://www.914world.com/bbs2... Mar 21 2006, 08:33 AM rhodyguy every passageway is cast in ht... Mar 21 2006, 08:43 AM DNHunt I figured this would get entertaining. http://www.914world.com/bbs... Mar 21 2006, 10:14 AM alpha434 ... Mar 21 2006, 10:21 AM Bleyseng Did you look at the pics of his furnace? Thats why... Mar 21 2006, 10:31 AM rhodyguy yep. WOW!!! only $1317.25 a pop f... Mar 21 2006, 10:37 AM Jake Raby 
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