Oh yeah, there's definitely news, but it's old news: This guy says he wants an aluminum head, that guy says it would cost a lot more than the first guy realizes, then some other guy says it should be easy, then a fourth guy makes an incoherent, cheerleading post about ignoring the naysayers, then a fifth guy says "Hey, cool thread, I want an aluminum head, too!", then a sixth guy says the cylinder head probably isn't the limiting factor. Lather, rinse, repeat.

I want an aluminum head just like everyone else wants an aluminum head. I also want a magic wand, and I want the universe to funnel enormous sums of money into my mailbox.

And a pony.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

I'm in if we get a pony.

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11.02 @ 120.56
http://www.youtube.com/watch?v=EAxRmoDgsdY
Chassis dyno
http://www.youtube.com/watch?v=wd6hFGzLJMc

Me too! Me too!

Hey, I thought this died when we found out that Supra heads bolt on. Did I miss something?

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'15 Chrysler 200S V6
'74 Duster 360, factory 4 speed car

Fixed.

-James

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Fixed X2

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Official Cookie and Mater Tormentor.

Fixed X3

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Part of Tyrde-Browne Racing

If dan gets magic money mail, i want to be on that list

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What's that fuzzy blue thing being hurled this way?
::stick::
BOOSH!!!

I have been reading this thread for a while, i think the AussieSpeed pp&r Hurricane 2 & 4 barrel intakes can hold its own when it comes to performance. Sure, we had a few minor changes along the way but all in all i think it offers good bang for buck... and our blower kits are 65% completed, our valve cover is also close, our tube headders will hopefully be shipped within the next week or 2 so we can see if they will fit LHD chrysler valiant cars...

AussieSpeed make close to 200 products now & has invested in machinery, dyno,flow bench & thousands of hours to get it all happening, not just for slant sixes but Ford, GM,Holden including 4 cyl, straight 6 V6 & V8.

We have looked at the aluminum cylinder head & i really would like to tackle the project or be involved. As many know, with castings there is so much more involved than going to a foundry & getting a mold & casting it.. there is a thing called contraction & it is a pain in the butt most castings in aluminum go 1mm in 70mm but this is only a guide, complex curves, different wall thicknesses all play a big part in it.. now its not just the length that contracts its the width, height, every bolt hole spark plug hole water jacket it all moves... then there is the part of getting it to mold & having enough tapper on everything, including the water jackets, ports ,rocker bosses & on it goes. there is also the problem of getting the gas out of the cores. (venting as the metal runs in... the gas has to get out other wise porosity takes over)
Once you get a good casting "out of the sand" the new cylinder head needs to be heat treated, impregnated so the water jackets dont leak.

Machining jigs, valve seat inserts,valve guide inserts & the list goes on... I have looked at all the work involved & know it can be done. If no one else has started the actual work on pattern equipment & actually got working on things we will consider making a start towards the later part of 2010.
I would never accept or advise any body to pay a deposit to anyone until you can see a finished product... so if you guys want to see the aussiespeed SL6 Aluminum head, help me sell more of my current products LOL so i can afford to take on the project if no one else is doing one...

I have alot of other speed equipment on my list that i want to make before i retire or die & if someone has already started the SL6 head, good luck or if you need any help dont be afraid to contact us..
Mark {AussieSpeed}

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www.aussiespeed.com

Atta boy Mark! It would be cool to bolt up my Hurricane to an aluminum head. I am sure you could find many helpers with R and D. Thanks again for bringing new slant products to the market place.

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66 Lil' Red Piggie Valiant (Mater Crusher) - Thanks Zilla!!!!! 72 Demon (Number 1 Son's)

I frickin' LOVE Aussies.

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vm

Mark,

Several of us could probably help with design and R&D. Let us know how your thought processes continue.

Cheers mate,

Lou

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Home of Slant6-powered fun machines since 1988

Thanks Lou, even thought it will be a while before we start it if we do actually make one feed back & ideas are a great thing to have from potential customers. here are a few things i have considered so far.

increase performance,
save some weight,
be able to use generic type rockers,
valves, springs etc
use std type intake bolt up postions
std configuration exhaust manifolds / hedders
offer a all out race version
improve port flow
offer hi comp or low comp combustion chamber
make it so it can be within most peoples budgets
improve valve cover sealing area
possibly not use shaft style rockers but another type ome or after market type roller rocker
so these are my thoughts. I will let you all consider these & add to it. Remember at the end of the day it needs to be affordable to end users, offer increased performance & be a quality product. I know of other after market cylinder heads out there that are all out race applications that need to use special rockers & valve train components, valve covers, intake & exhaust manifolds & before you know it you have spent well above 5000 bucks & your engine still isnt going. with some smart design in the pattern equipment there can be changes made to produce a head that with extra work done like CNC porting leaving enough material to change valve angles & custom machined chambers changing port shape & position could be done using the same pattern...
just my thoughts,,regards Mark

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www.aussiespeed.com

At the machine shop where I take all my machine work, there is a sign on the wall that goes something like this:

(1) Fast
(2) Cheap
(3) Well Done

You can pick two.


I have a hard time believing you will be able to make ANY kind of Al slant six head, even a copy of a stock one, and have it be within most people's budgets, especially if it must be shipped anywhere outside of Australia. Earlier this year I offered to give an Australian board member a crank snout bolt if he paid for shipping. the cost to ship a BOLT (singular) from Washington State to the land of Aus was over $30 US. I can't imagine the cost of shipping a head, even an aluminium one.

$1300 buys a heck of a lot of machine work to a stock head. I just can't see how this project will pencil out. I don't want to be a wet blanket, and it is fun to dream, but I am afraid that unless you find a millionaire slant enthusiast to back the project it just won't get off the ground.

Little too generic. I would say put as much serious, advanced R&D into the combustion chamber as you possibly can to maximise combustion quality. Improvements in breathing are relatively easy and require no special knowledge or computer analysis, but exact combustion chamber shape makes a large difference in completeness of burn and ping-resistance. Developing such a chamber from scratch is costly and difficult; probably the most feasible, least costly way to do this is to go on a hunting trip to find a well-designed modern engine of similar bore size and valve relationship, and make an exact, precise copy of that chamber.

I'm definitely in favour of full bolt-up compatibility with stock rocker cover and manifolds and such, though perhaps they wouldn't necessarily need to be stock slant-6 manifolds. The Jeep 4.0-litre Six comes to mind.

I am definitely not in favour of eliminating the shaft-style rockers — they're excellent in stock form, and there are already several good roller options available.

I'm not sure it's necessary to put a great deal of effort or money into high- and low-compression versions; just give it enough deck meat for milling to suit the application.

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一期一会
Too many people who were born on third base actually believe they've hit a triple.

Ok the shipping thing is something that is not 2 much of a problem as here in OZ we have some good deals available, the head would need to be in the region of $1500 bare to $3500 complete these are only figures & guesses.
In my shop i have a sign it says.
Speed cost money
How fast you wanna go $?$?
&
we pride ourselves on our prompt service, sorry it takes so long.
Now Dan you have made a point that i had thought of but never put into words.a revised chamber from a later model engine is exactly what i had in mind.i didnt mean stock cast iron sixties type manifolds but not a special manufactured high dollar intake.
I have had a bit to do with a racer that wanted to use a certain type camshaft but we couldnt get the lift we needed with a 1.5 rocker, by using a 1.73 rocker we were at the place we needed to be, to make 1.7 shaft type rockers in stainless was a very expensive option.. it was just a thought that could possibly be added..
yes high & low comp versions will be the same hastings but buy having a thick enough cylinder head face to be machined. This can be done by having a slightly shorter water core jacket on the face side of the cylinder head & adding the same to the top of the pattern so you still end up with a high comp thick deck face & not reduce the water volume of the cylinder head, i dont want to offer a high comp banana version..
in short both questions are valid & i had considered them
Regards From Down under & keep posting your feed back
Mark

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www.aussiespeed.com