Milwaukee Midget

[fordboy628]

isn't it a grp5 injected head from '67, or is that too obvious?  

have you trawled this site btw?

http://mk1-performance-conversions.co.uk/mk1_index.htm

Andy

Andy,

I've spent a more than a bit of time on BMC stuff & had never heard of these bits until last Friday.   And, as my handle implies, more of a Ford/Lotus T/C & Cosworth/English Ale enthusiast.   Thanks for the info & the link.
 
Fordboy

[Graham in Aus]

OOOH Exotica indeed! 

Andy has pointed you toward Mark Forsters site, a great resource, their forum is probably my second most visited after Landracing.com!

The Downdraft Weslake style is rare stuff indeed, but beware, this stuff has history! Very prone to crack and all sorts of other issues. The MOWOG Arden style non downdraft has been re-tooled and now made for Mini Spares:

http://www.minispares.com/article/Minispares~Diary/Dodd's~Diary/Minispares~New~Arden~8~Port~Head.aspx?96d43742-ec73-4e6c-8fb1-0f58832039fd%7Ccc4d48fc-990b-4c42-8fba-f86ecdbb1b10%7C7eacf00b-ffff-467d-bc16-35b9d90cf002

http://www.youtube.com/watch?v=Jt9xbc1XnBU

I know a few guys in the UK who are very well informed on these heads, particularly if you are trying to rescue an old war horse!

It really depends on what SCTA view as legal for you class I guess.

I also believe you can get there (record) with the 5 port!

Cheers 

[fordboy628]

Re: EIEIEIEI, Oh Crap!!

Midget/Old MacDonald,

Was doing some research this morning on 8/7 port heads and found this site:

http://www.minispares.com/article/Technical~Information/Engine/ARDEN~8~PORT~ALLOY~HEAD.aspx?22F56378-E9DB-4F9E-824E-9AC72EA62B00%7CA88C17BC-4816-400F-AF5B-9E8B8D7DB344%7CFBDCD2C8-31C3-47B3-BA20-06234D84EDE4

Areas of concern:

Beware—This head is not a straight bolt on conversion and we recommend you use one of the following companies who have experience.

Cooper S Con rods and crankshaft should be used with 1.625” big end.
Journal size---number 2 and 4 con rods will need modifying as the top edge of the bolts may foul the special camshaft, which has a non standard valve sequence. On Keith Dodd,s road use 8 port car the standard A-Plus 1.75 con rods and crank were used by modyfing the con rods and bolts on one side only.Machining 2mm from bolt head area and recut radius-modify top of bolt. See or apply for diagram.   Yikes!!!!

On the positive side:

The nominal 16cc combustion chambers are left in a basic shape with enough metal for those with the latest advanced ideas of shape to apply them and create the correct compression ratio for the desired use. Valve and seat material specification allows use of unleaded petrol.

The revolutionary 8-port concept took the racing world by storm and when  Alec Poole took the 1000cc class and championship in 1969 in the Arden car, BMC Special tuning who were developing a cast iron 8 port item decided it was the way to go and dropped their version and commissioned 200 Arden 8 port alloy heads which were fully homologated under FIA regulation amendments as “Eight port head; Part No C-AEG612. These heads were sold by ST Abingdon under part number C-AHT346.

Not proposing a change, just an informational addition to this Pommey Car Porn deviation to the normal thread line. . . .
 
Fordboy

[Milwaukee Midget]

Can't use it anyway - Rule 5.E regarding production based entries, including GT, states -

"Cylinder heads are limited to original number of valves and port configuration".

So unless you have a mathmatical formula that can prove that 5=8 . . .

Well, that was a fun weekend of tail chasing.

[gkabbt]

Can't use it anyway - Rule 5.E regarding production based entries, including GT, states -

"Cylinder heads are limited to original number of valves and port configuration".

So unless you have a mathmatical formula that can prove that 5=8 . . .

Well, that was a fun weekend of tail chasing.

Chris,

Point to ponder:
Run your current setup in I/GT this year and and then next year stepup to I/MS and run this new head.

Current record:
Engine   Entry Name                   Driver          Date  Speed
I           Hornbrooks Rocinante     C. Hornbrook 8/95  150.181

As I said, Point to ponder.

Gregg
     
 

[Milwaukee Midget]

Can't use it anyway - Rule 5.E regarding production based entries, including GT, states -

"Cylinder heads are limited to original number of valves and port configuration".

So unless you have a mathmatical formula that can prove that 5=8 . . .

Well, that was a fun weekend of tail chasing.

Chris,

Point to ponder:
Run your current setup in I/GT this year and and then next year stepup to I/MS and run this new head.

Current record:
Engine   Entry Name                   Driver          Date  Speed
I           Hornbrooks Rocinante     C. Hornbrook 8/95  150.181

As I said, Point to ponder.

Gregg
     
 

Gregg - that is a good point, and in addition to the better head, Modified Sport would let me aero up the car, at which point I would likely convert it to a Sebring Sprite . . .

http://www.sebringsprite.com/pricelist.html

[fordboy628]

Can't use it anyway - Rule 5.E regarding production based entries, including GT, states -

"Cylinder heads are limited to original number of valves and port configuration".

So unless you have a mathmatical formula that can prove that 5=8 . . .

Midget,

Since UK now uses metric system and US still uses miles, I would argue that since 5 miles ~ equal to 8 kilometers, (1Km is equivalent to 0.6214 miles), so then, 5 is equal to 8 in this instance, then extrapolating because the engine is what the car uses to cover distance, cylinder head an integral part of engine, number of ports would then be in a state of equilibrium in the miles to kilometers conversion continuum.   Etc, etc,. . . . .

Happy to oblige!!!
Mathboy

[Milwaukee Midget]

Can't use it anyway - Rule 5.E regarding production based entries, including GT, states -

"Cylinder heads are limited to original number of valves and port configuration".

So unless you have a mathmatical formula that can prove that 5=8 . . .

Midget,

Since UK now uses metric system and US still uses miles, I would argue that since 5 miles ~ equal to 8 kilometers, (1Km is equivalent to 0.6214 miles), so then, 5 is equal to 8 in this instance, then extrapolating because the engine is what the car uses to cover distance, cylinder head an integral part of engine, number of ports would then be in a state of equilibrium in the miles to kilometers conversion continuum.   Etc, etc,. . . . .

Happy to oblige!!!
Mathboy

 

You know, these tech inspectors may have been born at night, but they weren't born last night.

[gkabbt]

Gregg - that is a good point, and in addition to the better head, Modified Sport would let me aero up the car, at which point I would likely convert it to a Sebring Sprite . . .

http://www.sebringsprite.com/pricelist.html

Kind of what I was thinking as well and the reason I suggested it.
With the better aero mods as well as the head, do you think it would be in the record territory for I/MS?

Gregg

[Andy Cooke]

My guess is that you wouldn't have a problem with conrod to cam clearance with the short stroke crank   

Andy

Trapped between the Hook Norton and Wychwood breweries..  (not too near to the Wyre Piddle Brewery)

[fordboy628]

My guess is that you wouldn't have a problem with conrod to cam clearance with the short stroke crank   

Andy

Trapped between the Hook Norton and Wychwood breweries..  (not too near to the Wyre Piddle Brewery)

Good point!!

If I ever get to the UK, count on a visit to Wychwood brewery. . . . .    (So many ales, so little time. . . . .)
 
Fordboy

[Milwaukee Midget]

My guess is that you wouldn't have a problem with conrod to cam clearance with the short stroke crank   

Andy

Trapped between the Hook Norton and Wychwood breweries..  (not too near to the Wyre Piddle Brewery)

Oooh - just up the pike from the home of Hobgoblin - Your international beverage cred with Fordboy just increased five fold!  

Caution, don't get too specific with your location - you might wind up with a visiting Illinisian.

I think you're right on that account - the rods I had made don't have a lot of extra meat hanging off of their big ends, and the crank has a considerably shorter throw than a 1275.

But I'm thinking if I indeed go this route, I'll be looking to source an A+ block out of a Marina or something.

[Andy Cooke]

Oooh - just up the pike from the home of Hobgoblin - Your international beverage cred with Fordboy just increased five fold!  

Caution, don't get too specific with your location - you might wind up with a visiting Illinisian.

I think you're right on that account - the rods I had made don't have a lot of extra meat hanging off of their big ends, and the crank has a considerably shorter throw than a 1275.

But I'm thinking if I indeed go this route, I'll be looking to source an A+ block out of a Marina or something.

good point, Hotnuts found out and turned up on my doorstep one day    He didn't get the brewery tour, but we have organised a P-up there through work.

If you think you're going A+ it might be worth getting one in stock, they weren't fitted into 'classics' and you just don't see that type of car on the road any more.  A few years back the scrappies were full of them.  That said, I'm not sure how much of an improvement you'd get from one. 

Andy

[fordboy628]

Hmmm. . . . . .    Wychwood's Hobgoblin or Moorland's Old Speckled Hen?   Why is life filled with difficult choices. . . . . like fantasizing about which cylinder head you would use if you were able. . . . .    rules wise AND wallet wise.   At this point, I'm thinkin' maybe the wallet rules.   Eh, Doctor Goggles, any advice for your dimunitive friend from "Beerhaven"?

If, in fact, wallet issues are resolved, class rules issues are resolved, fantasy issues resolved, the cylinder head I would use would be the BMW K100RS.    Since this conversion has been already accomplished, some critical bits might be available for purchase rather than having to fabricate every stinkin' nut and washer. . . . .      Sorry, no pics.   Still just a fantasy rolling around in my melon.   (Did I mention I have a "Bavarian" brother-in-law?   Possible co-conspiritor. . . .)

Occasionally though, some of the fantasies escape the confines of my melon, and actually make it to metal.    BMC/Chivalay dyno adaptors. . . reduced speed ratio cog belt water pump drives. . . . . .     nothing too evil. . . . .

Pommey Car Porn from the Twilight Zone, BMC "A" subculture. . . . Part Cinq. . . . Final Chapter.               maybe. . . .



Pics of an ALLOY, crossflow 7 port BMC head.   Unsure of Manufacturer.   Keeps the vaunted 3 exhaust port configuration.   This design is so well thought out that the spark plugs cannot be changed with the carbs bolted on the mounting flanges. . . .      Porting and valve sizes reflect more current thinking regarding airflow.  Head is cast to accept Weber/Dellorto carbs, but could be setup for mechanical fuel injection or EFI, with the proper ECU. . . . .     Thanks again to the Northern Illinois Mini Maven for access and permission for pics.

Welcome to Fahntasie Island. . . . . .     Don't address me as Mr. Roarke, Ricardo or . . . Tattoo. . . . .
 
Mr. Serling

P.S.  Someone thoughtful opined that "One man's heaven is another man's hell . . . ."   Just an observation.
P.P.S.  I think NIMM has a BMW cylinder head sitting on the shelf in his lair. . . . . . . . . . .                                  to be continued. . . . . . . .

[Graham in Aus]

OK, if the wallet issue is addressed and I/MS is in the offing, why not KAD?



http://www.kentautodevelopments.com/shop/product/kad-16v-cylinder-head-kit-race

http://www.youtube.com/watch?v=hMjRwq5b7g0

Just for Fordboy, in case you hadn't seen this before!  

Cheers  

(Dreamin! Graham)