head starting to be played with in the chamber dept,,, just a good clean up, de-shroud & pollish for this one.


Bath-tub type ...rather large chamber head,,, maybe you will be able to see the trench i make across the plug hole too???


another one, but with smaller chambers . but still should be able to get the idea of a well de-shrouded, shaped for big capacity cyl head... note the size of the valves you should see these ports


and yet another head with about 32ccs in the chambers,,, now you won`t want to take the peak out much more than this or you may well break through


sorry i havn`t got a good shot of the ports but you may be able to see that there`s not really much meat ontop or underneath the ports on the manifold face, i have an even bigger race head in the shelf


I will try to get some shots of the ports on that one later & also some shots of a small bore head that Freddy Sayers has borrowed to try to copy (good luck) & i quote him saying---> "Havn`t seen even a big bore head that big before"

This is all pretty well just old school stuff,,, i started porting heads when i was a young fella,(something 10 years old) havn`t stopped since & i`m now 45 wow i`m old

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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.

woah.. any more tickling and she'll wet her special area

love your work

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1975 Leyland Mini: 1060cc - resto/ ex-hsc project.

O.k. you asked for it so here are the flow figures.. done by john from specialist components in england ..

Well the results are in - I don't have the graphs at the moment just the peak flows. Firstly the cylinder head, head tested was from a 55K miles 1986 K100 8v twin cam engine (980ishcc lump) The head was not prepared in any way, it was taken from the bike and plonked on the flow bench, no cleaning up the backs of the valves, no cutting the seats, no de-coking exh ports/chambers, nothing - exactly as come of a used and abused bike.
inlet valve 34mm dia, exh valve 30mm dia

peak inlet flow 132cfm
peak exh flow 92cfm


From Viz's yellow bible the just of the matter is a REALLY good full on 5 port head n/a with big offset valves etc will flow around

135cfm inlet
100-110 exh

So I think we can safely say the 8V twink has enough flow in std form to give most 5 port heads a good spanking! - These flow figs could be improved drastically with a de-coke and the throats blended in as they are quite coarse in std form. For this engine its all going together bog standard (de-coked!), I may have a 8V fully ported to see what it'll do with big valves etc.

So with this head and the 284 deg cams on a 1293 bottom end 110bhp should be well within reach for a nice smooth torquey engine road.
...

Ok the 16v head in std "clean!" form gave:-

150cfm inlet
116cfm exh

these heads have 2 x 26mm inlets and 2 x 23.5 exhausts. The flow figures liven up dramatically when the throats are worked mildly and 3 angle seats used etc. Again a very good effort straight out of the box for the valve sizes. These heads in 8v and 16v form have long short turn radius lengths to them which appears to keep the air attached to the port longer before departing for the rear of the valve - giving good airflow figs for smallish valve sizes.

John


Hope this helps BEANIE

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I am the son of the STIG

HOTBRICKS
http://hotbricks.org.au/

'65 NCF MINI.....
'69 MINIMATIC.... 9 year resto still on the go

oooH nooooo,,, that`s terrible,,, a std 8v twinky is only barely as good as a fully worked "OFF-SET" FULL RACE 5 port mini head,,, dam that`s just not good enough now is it???

Oh but then the 16v head only absolutely sh1ts all over that,,, well that`s no good either is it???

well then i just wonder what this k1200 head is going to be like then,,, crickey it will probably only flow another major bundle again,,, bugga,,, that`s no good,,, maybe i should just get rid of them all while i can & get back to porting out lawn mower engines


sorry i couldn`t help that

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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.

Finally some figures. Good flow rates which should see good figures. Good to see. Now we can compare those of a similar nature. Is elder. Kad etc. At least someone has got facts that are useable...,.

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But those figures come from the UK, don't you want to go and question them as well

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Roundies and Clubbies(except vans) are both ugly that is why I have Midas and a van
1293 Mini Midas Bronze,1275 Clubman van

Dont be a smart-a$$

Aarons point about UK rolling road dyno results has been proven many times. Even they admit that the results are all over the shop...
Look at the Turbo forums and you will see that all of the UK guys use a standard convention.
If using an engine dyno = Results measured in "HP" and "Torque"
If using a rolling road dyno = Results measured in "Bananas"

If you say "I got 100hp on the rolling road" they will actually correct you and say that they dont use HP for rolling roads because of inaccuracy and they use "Bananas"

Dont get me started.


Pete

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Click here for the Turbo Conversion Thread!

What he said....
Feral, i have had dealings with u in the past. Do you really think i am out on a witch hunt, or some good substansiated facts?

Anyway, ive had enough.
Tata ladies

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When you understand that any chassis or engine dyno is only good for comparison to other engines tested at the same place with exactly the same conditions is when you will understand that all dyno's are only tuning aids, not to be taken as gospel

GRs dyno is just as inaccurate as any other dyno and despite what the good Doc says about Graham swinging the weight and calibrating the tacho it still only calibrates it to his settings. Unless Graham gets one of the 2 sets of verified weights in Australia to check ( which I know he doesn't) it just makes it as good as any other dyno

If you would like to question my qualifications I have a degree in mechanical engineering as well as a degree in automotive as well been a member of the society of mechanical engineers in Australia for over 20 years,

When people start attacking people’s work and their integrety using buzz words that they have picked up hanging around good people like GR it is a shame, and that is exactly what has been going on in this thread and the others that you and Aaron have been expounding your great lack of knowledge in

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Roundies and Clubbies(except vans) are both ugly that is why I have Midas and a van
1293 Mini Midas Bronze,1275 Clubman van

Feral, Personal Attacks aside....
All i have ever asked for is some type of written evidence, flow figures or torque curves. Non had been forthcoming, I kept asking, and others started to defend the lack of information..... Sorry, but Why is it that we are not allowed to ask for more information. I'm not asking for HP figures, but a torque curve. Even you have to admit that a torque curve will give you a representation of how "Good" Something is at doing it's job. Am i not allowed to question, is it not something us "young" people can do? If we don;t ask questions, then how are we to know or even learn?

You may have a bunch of degrees in various engineering studies which is great and all, but seriously, why have a go at people, why not educate.
How would you go about deciding weather or not the BMW or any other head is a "Good" thing? No more sarcasm, nor attacks against people. How would you come to a decision.....

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I dont want to question your qualifications - and with all due respect dont care. I know mechanical engineers (my background is electrical engineering) and we can argue all day about that... its beside the point.

I was quite simple in my reply - I simply said dont be a smart-a$$ because your last comment was baiting Aaron - and nothing else... wether you admit that or not - it is what it is.

My point about getting it on GRs dyno is that its calibrated, and yes while that can also be argued its what the racing community and all engine builders in Australia respect as accurate and in his control - a true representation of the actual torque. (As I said before HP is the math)

Im not really sure what the whole argument is about !!!
People building these things would build them for one of 2 reasons
1. The potential Torque/HP they will get
2. Because they simply want a BMW head A series.

So, if they want number 2. Fine, no discussion needed AT ALL
But, if they want number 1. Then its in Matts best interest to have it dyno'd, flow tested and post up some results.
I simply cannot see ANY reason NOT too do it... people really want to know, and I can speak for myself (and I think Aaron) when I say we are genuinely interested. Not having a go at it. Matt has developed something great - in my opinion its at the final stage which is test and prove... I really dont see what the issue is??

I WOULD argue about your point that GRs dyno is inaccurate.

Actually, its almost a contradition as mechanical engineers designed the Engine and Chassis and Rolling Road dyno's. Are you saying that they are all innacurate so we should no longer trust Mechanical Engineers with lots of experience? <<-- Yes, thats me being a smart a$$

Specifically to your point


Your off track here. NO ONE is attacking the work - unless I have misread or mis-communicated ill make it clear again . Good on him for producing this conversion, all cred to him. All I want to know is power figures now... and real tests (crank torque, 1/4 mile, etc)
I have sold my turbo mini - I dont have one at the moment, I am planning a 5 year project and looking at all options. Twin Cams, Turbos, etc etc and this IS an option (in fact the beemer head is stuffed downstairs with the other crap

Listen - lets all agree on one thing - we all want to know what the heck kind of power this thing will produce right?
If thats right - lets do it...

Peter

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Click here for the Turbo Conversion Thread!

Pete,,, both you & Aaron have pressed this topic with things like this-->

""" simply cannot see ANY reason NOT too do it... """

I`ve said it time & time again mate,,, how come people don`t actually read my posts ???

I`m doing it !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I have engines nearly finished !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

they will be dynoed !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

There is only one of me !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I have other things on my plate !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

crickey,,, man-o-man,,, if it weren`t for a blood clot in my right lung,,,,, then a lump had to be cut from my throat & kombi gearboxes blowing up (9 times) & all sorts of other crap like one of my dogs back knee breaking & needing to baby sit the dam thing for months,,, my machinist not getting all the kits done years & years ago when they were supposed to

well,,,,,,,,,,,,,,,,,,,,,,,,

leave feralsprint out of this,,, he`s obviously one of very few people tpying on here actually understanding what i`m saying

they`re not done yet!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

But they will be & i`m working towards that very purpose !!!!!!!!!!!!!!!!!!!!!!!!!!!!

do i have to start typing in big bold letters like i did with Aaron on the other thread when he missed my post about engines nearly ready to build ???????????????

you guys just sh!t me off now !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

if i hear one more word as to Why i`m NOT DOING it,,, i`m gonna punch someone !!!!!!!!!!!

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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.

Sorry Matt... your going to hear more so sorry to whoever is closest to you and going to get punched.

I truly believe there are too many things and post and threads which are all confusing this. I just happened to read the other one and read that you WILL dyno it, etc and thought "Oh crap, if I knew that I would have responded very differently"

Feral and I have no issue (well I dont anyway, honestly) its banter because I think he was baiting Aaron with his comment thats all.

I thought (PLEASE correct me if I am wrong) that you had your engine finished (one of them, not sure which) and I made you the offer to get it on GRs dyno at no cost. I was really keen to see it on there. As was GR. I thought your response was no thanks... not 'I dont have one finished' so excuse my request to get it on the dyno - I honestly thought you had at least one conversion complete... thats why GR and I wanted to get it on the dyno...

Maybe its all the multiple threads confusing things. But honestly I was under the impression one was done and ready...

I am understanding about your problems, I have had major family issues recently too (which ended up in me selling up my mini stuff) so I get that... If your working on it, fine, at the end of the day, I dont have any quams here, just want to see the thing work and hopefully on the drag strip honestly.

Pete

_________________

Click here for the Turbo Conversion Thread!

bugga the drag strip we want Matt and hi twinky down with the MRA lads doing what a mini does best

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Roundies and Clubbies(except vans) are both ugly that is why I have Midas and a van
1293 Mini Midas Bronze,1275 Clubman van