A 24-valve M20

[akorcovelos]

only r3v could make this happen!

[noid]

Lets bring this back.

I am willing to put up 10k to make this happen.

With a decent 3D printer and some modern 3D CAD, it shouldn't take 250k to finish up.

These guys can do rapid low volume sand castings for under 5k.

https://www.youtube.com/watch?v=Z8MaVaqNr3U

[digger]

if you do R&D , development testing and a few iterations it could easily id guess. it depends how much is designed from a blank sheet. if you have a starting point and all you do is relatively minor changes then yes its alot less work

[Blake B]

There's a 24v head being built for the L-24/28 by a member on the Hybrid Z forums. He works and designs stuff like this for a living. He's been at it over a year but the first head is almost done.

It's actually pretty incredible as he posts about each step and really gives you a peek at what it takes to build one. However it doesn't take anywhere near $250k

check it out when you have some reading time http://forums.hybridz.org/topic/1196...nworks/page-32

[digger]

if the m50 head bolted to the m20 block easy peasy then in might be believable. since it doesnt then the casting was changed substantially and hence BMW have no reason to copy it

[mr2peak]

Rumor has it that BMW purchased the RD heads, and that was the basis for the M5x motors

[Kevinl]

That RD head looks like an m50 head with the 4 bolt oval exhaust ports

[akorcovelos]

As seen in the video poster earlier, people have put 24v heads on m20's, usually because the class they race in has only one restriction in engine modification, you keep the stock block.

In all reality a properly built 12v head and supporting engine mods will produce more power than the e30 chassis can make use of, but it would still be damn cool to find an old ragged out e30 in some barn and find it has the unicorn RD 24v head on it.

[digger]

better off using an M54 or N52 that's already an alloy block from the factory. a custom billet block would cost a fortune..

not to mention its been engineered with an R&D budget of millions, not just made by someone who happens to have CAD, and a CNC and big lump of alloy

[nando]

better off using an M54 or N52 that's already an alloy block from the factory. a custom billet block would cost a fortune..

[digger]

I would kill for an aluminum block M20, I know theres a company that CNC's blocks for Muscle Car guys.

really? you'd probably save 15-20kg and introduce a whole bunch of potential issues. atleast with a new 24V head you can make alot more power if its done correctly

[plotfi]

put me on list

98 more people to go!

I would definitely be down. $2,500 isn't even that bad of a price, hell a Stage 3 M20 head from VAC is $2,599. I doubt you'd find 99 other people to jump in, AND go through with it though.

[stonea]

Agree 100% with digger.


I'd rather see an aluminum M20 block than something that bmw effectively already designed and produced in large quantities.

I would kill for an aluminum block M20, I know theres a company that CNC's blocks for Muscle Car guys.

[digger]

My read of this is....$250k for "R&D" does not include the cost to produce 100 heads but gets you production ready.

i think you're right, but if people came in as investors usually they get a share of profits

its never going to happen so just a bit of fun really. maybe 10-15 years ago was the time if ever

[jeffnhiscars]

My conversation with RD about 24V heads were brief but I'll enquire further while placing 2nd group buy of headers.

I'm not the most technical e30 guy, so how about you guys making a list so I can inquire about those things instead.

Was told "they needed further development at about 250K"
As far as price, I just divided 250K by 100 units, (75 = $3333 and 50 = 5000 ea)

Aloha :)

That's reinforces my belief that $250k don't buy a head. You really want to ask before long