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PostPosted: Mon May 09, 2005 9:42 am 
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Location: Sydney - strangely, I am glad of the sight of hills!!
sorry couldn't help the ebay headline. you clowns have got me started on something there.

anyway, i just received the following email. i will get the pictures up of the sand cores tonight.

"MINI SPORT / AKM 7 PORT CYLINDER HEAD

Thank you for your enquiry about the AKM 7 port cylinder head and we are pleased to give you an update on the current situation regarding the production of these heads.

Firstly though, we would like to apologise for the delay in supplying you with information, which was unavoidable for a number of reasons but trust that the following explanation will help you to understand the cause of this delay.

The recent history of the 7 port, in brief, is that it was being produced in Denmark by Georg Mikkelsen of AKM racing, who had gained some spectacular results with Mini racers in Denmark, Japan, Canada, in addition to other racers all over the world. Also, Georg had given a 7 port head, to the well known Guru of 'A' series tuning, Mr David Vizard. His glowing tribute, which can be found in his book Tuning BL 'A' series engines, say's it all about this head.

Georg knew he had a brilliant product, good news always travels fast and enquiries followed from all over the world. Mini Sport was no exception, we had tried the head and the results were astounding, hence we contacted Georg to buy heads from him. However, he had a problem with the head which had become very difficult to solve. He could not get the heads cast or machined in Denmark in sufficient quantities, the problem being that either the castings were wrong, or they were incorrectly machined by the sub contractors. This was costing a lot of time,money and endless stress and he still didn't have any heads to supply his patient customers.

The situation had to be solved, and through discussion between the Chairman of Mini Sport, Mr Brian Harper and Georg, it was initially decided that Mini Sport would have the heads cast in the UK, where expertise in casting is greater. The heads would then come to Mini Sport and be machined in their new state of the art machining centre which had been set up during 2004, with great investment in CNC Lathes and Milling machines. These machines, along with the expertise and knowledge gained over the last 50 years by Mini Sport engineers was the perfect combination required to produce the finished product.

However, with the problems Georg had endured over a long period time, he finally came to the decision that he no longer wished to be involved with making the 7 port head and suggested that Mini Sport should buy the rights and the tooling. After a great deal of discussion, we agreed to take the project on and the deal was finally done in February 2005. On our insistence, part of this deal was that Georg would still be involved in the production, but in an advisory role.

Since March, when we received the tooling, we have been actively sourcing the correct foundry for the job within the UK, as it is important to us that we get this head into production as soon as possible. However, it is important that the head is 100% perfect before it is released into the market place, hence the reason for the delay. We know this is frustrating, but it has been very necessary to spend the time on doing the research so we were confident of a positive result and a quality product.

We are pleased to advise you that the first cores have been delivered to the foundry for prototype casting and we expect to take delivery of the first Mini Sport 7 Port Cylinder Heads in the next few days. These first heads will go through rigorous tests, including X-ray and pressure tests and finally to be cut into sections to make sure the castings are perfect.

When we are completely satisfied, we will begin production and then be in a position to supply you with your Mini Sport 7 Port Cylinder head. Unfortunately, we are unable to give you any accurate prices at the moment, but envisage the price for a standard bare 7 port head to be inline with the AKM price of approximately £1000 to £1200 + vat. Until all the testing has been done and all the costings finalised we are unable to confirm these prices. However, from the beginning of this project these have been our target prices, so we are reasonably confident that these will be achieved. We will inform you immediately, the prices and specifications are available.

Additionally, we will be sending you updates over the next few weeks, keeping you informed of our progress with this project and although we don't have an accurate delivery schedule we would like to be in a position to start supply by mid to late July 2005.

Finally, if you wish to reserve one of the first Mini Sport 7 Port Cylinder Heads, we need to hear from you very soon. These cylinder heads will be produced in batches and to be assured of receiving one of the first of these fantastic pieces of engineering, which will be sold strictly on a first come first served basis, we need to receive a confirmed order along with a deposit of £250. On receipt of your order we will contact you as soon as possible to advise you of your position on the list.

We trust that this information has been of help and interest to you and we will be in contact again very soon with an update.

We look forward to being of service soon,

Very kindest regards,

Chris Harper

(Sales Director) "


hmmm $3000 plus shipping, plus GR working. Craps all over that $13500 16V for value, but would it get you anything over and above a GR 5 port? Would love to get one out here for him to work his magic on.

michael

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Last edited by mickmini on Wed Jul 20, 2005 12:16 pm, edited 3 times in total.

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PostPosted: Mon May 09, 2005 10:52 am 
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If it was 1000 pounds, then it's more like $2440 + GST + shipping. Could be $3000-3200 in total, which isn't bad. It wouldn't be as good as the 16V 8-port head, but better value for money (though I don't know any of the performance specs of either the 7-port or 8-port heads to make any "value" judgement. Technically speaking, the 16V 8-port head is the "perfect" head, technically speaking. 1 inlet, 1 outlet, 4 valves per cylinder.

As far as performance goes (either the 7- or 8-port), I've heard it makes quite the difference... Especially with duel 45DCOE Webers.

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PostPosted: Mon May 09, 2005 12:36 pm 
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you've got to think of it as the same combustion chamber and valve setup as the 5 port but with four inlet ports instead of two. Not everything that works with the 5 port will work on these babies, and there are other opportunities to make gains that are not available with the 5 port. As i said it would need GR to get one or two and play with to see if there is anything to be gained over a well done 5 port. Don't think that just bolting one on will give a miraculous change without any development.

as far as the $ go, i always figure a 3-1 exchange with the pound, so i get pleasantly surprised with how cheap it is when it actually has to be paid :lol:

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PostPosted: Mon May 09, 2005 1:42 pm 
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I'd talk to GR before you buy it. He says the Elder 8 port has far better potential, as the inlet ports in the AKM 7 port are just too big.

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PostPosted: Mon May 09, 2005 6:25 pm 
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Location: Sydney - strangely, I am glad of the sight of hills!!
yeah, i only ever sent the email to the Danes to see what they were charging. i'm a curious bugger sometimes. i don't even know if it is iron or alloy at this point since the original design was iron. Minisport may have made it alloy, may have changed port sizes, who knows?

maybe it is just as good as their roller rockers you were saying.......

who says i've got the money anyway???

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PostPosted: Mon May 09, 2005 7:13 pm 
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If you sell the house mate, i am sure the Mrs won't miss 10k skimmed off the top..... Then you can buy one for you and one for me! :wink:

Cheers

Aaron

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PostPosted: Mon May 09, 2005 11:49 pm 
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Location: Sydney - strangely, I am glad of the sight of hills!!
:wink:

hey aaron, don't suppose you took a picture of the near miss with the tree did you?

by the way i was serious with the chainsaw, i can borrow one from my brother to help clean the mess up if you like.

michael

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PostPosted: Tue May 10, 2005 8:28 am 
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Sorry mate no pics, the wife didn't think to take any but the council did. i doubt that they will send them to me though. There tree so there fault so they cleaned it up woohoo!

So when am i getting my 7 port head?

Cheers

Aaron

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PostPosted: Tue May 10, 2005 1:29 pm 
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Image

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The heads will be cast iron, which is another big advantage to the Elder head. For all of you ever wondered how something gets cast, these are the moulds and cores.

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PostPosted: Tue May 10, 2005 1:55 pm 
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Wish I could build sand castles like that :D :D :D

Very interesting pictures, thanks

EDIT: Those are some pretty enormous inlet ports as Kev said :shock: :shock: :shock:
look at the size compared to the exhausts 2 and a bit times as big I am guessing

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 Post subject: SPRITE
PostPosted: Tue May 10, 2005 6:18 pm 
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Looks good, where will we find a manufacture for inlest and exhaust mainfolds.

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 Post subject: Re: SPRITE
PostPosted: Tue May 10, 2005 7:32 pm 
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clubmn wrote:
Looks good, where will we find a manufacture for inlest and exhaust mainfolds.

The exhaust has 3 port in usual spots, will take any Mini LCB or freeflow.
Inlets- I'd bet MiniSport will sell them, perhaps in a kit with the head.

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PostPosted: Tue May 10, 2005 7:54 pm 
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i have that urge to run my fingers along all the lines surfaces and say ahh.

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PostPosted: Tue May 10, 2005 8:05 pm 
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I saw an Elder 8 port the other day, that GR had CUT UP in the saw.. :shock: 8) good way to see where the ports go and how thick the walls are! :lol:

Cast iron AKM 7 port from UK? Nah- I'd save for an alloy Ozzie Elder 8 port... :D

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PostPosted: Tue May 10, 2005 8:09 pm 
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why alloy over cast iron?
i know that they cool quicker, are lighter, less porous
but isnt alloy brittle and more prone to fatigue

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