I was wondering is ther any/much benfit of an 8-port cross flow (eg westlake) compared against a 5-port worked by GR??
IM just thinking about my options, If i could find a cross flow it would be for a largebore stroker motor.

Just wasnt sure about the advantage (i mean in approx HP increase airflow etc)

Thanks all
Brenton

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mostly in the hip pocket.... even if you could find a weslake head.

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the world is a book, and those who do not travel read only a page
66 Mini Minor sponsored by http://www.lifeonthehedge.com.au/ The Dog Harness Specialists
It was a pleasure ausmini. I'll miss all you misfits and reprobates

There have been quite a few threads on this, search weslake, arden, etc.
The general consensus is that they will out perform the 5 port head but the cost of setting one up is pretty high. I think they start at around $2000 for the casting, then you need to add machining, valves, etc.

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The 850 Man

Try $5000 all up, IF you can source any

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Lillee - 1969 Morris Mini K

Pretty sure the Elder 8 port alloy one is still available, check with Graham Russell. About $4K (+ labour) fitted, + carbs or injection.
8 port will give better midrange torque than 5 port, at same max HP tuning level.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Would love to try one out. And they have a classic works feel about them.

I'll wait till uni is finished before I try that one on the missus however...

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SooperDooperMiniCooperExpertEngineering

All garage work involves equal measures of enthusiasm, ingenuity and a fair degree of irresponsibility.

something seriously cool about opening up the bonnet of a classy mini and seeing a crossflow on there, looking like it was done at Abingdon

it's great looking at the motors of the NSW super-minis

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did I tell you that I won a trophy?

I love these pics of Dean Canto's pickup-

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

I have a heap of five port Weslake heads.

hee hee,,, yeah don`t we all

But,,, in all seriousness,,, the question is about an 8 port vs a good 5 port,,, well i have to say that it`s very hard for a good 4 port to beat a good 8 port on the track,,, mid range & upper end (because of that wonderfull mid range) is just very hard to beat,,, but i`ve seen some "not so good" 8 ports too

so,,, "Good" 5 port against a "Good" 8 port,,, well the 8 port wins all day every day & especially sunday & then sells on monday (sorry ,,, old adverts stick in my head)

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.

Best get your 8 ports (not very weslakey ones at that) on tracks various winning on sundays so's you can sell more of em on mondays eh?

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the world is a book, and those who do not travel read only a page
66 Mini Minor sponsored by http://www.lifeonthehedge.com.au/ The Dog Harness Specialists
It was a pleasure ausmini. I'll miss all you misfits and reprobates

thankyou Matt thats exactly what i wanted to know..

I didnt realise that the westlakes were as rare as they were (i read some old posts), hmmm there goes that idea - maybe consider 7 ports now

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Rumour has it that the porting on the AKM 7 port is not the best. The Weber carbs bolt straight to the head and although the intake holes are big, the port shape is not great.
I'd dig a little deeper into this before I bought one...


OTOH, apparently this alloy `Weslake 8 port copy' head is da bomb, but supply is a problem...

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Yes please!!!

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Did you know abput the experimental 'HEMI' crossflow head by BMC/BL?

It's a real crossflow head, as the valves sit in line and not side by side.
Plus the hemispherical combustion chamber should give some improvements.

It was made at the time production of the Cooper 'S' came to an end but found to be too expensive. Intended for use with a 998, but from the looks of it never ran.





Cheers,
Jan

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No speakers, no bodykits, no six-inch spacers, no spak filler, no bullshit