my slow conversion from 5 port to 7 + efi
Turbo Mini Forums

G'day fella's and lass'es

The name is Jon and I have a 77 Leyland mini, 1293, light head wok, otherwise stock. Now the current project is the injected throttle body and ecu controlled ignition from S/C but with a Megasquirt ver3 ecu instead of the Typhoon one.

I have set up a megajolt / coil pack on our other mini toy I figure that injection is the next step, any hints, tips, tricks ?

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Edited by clbm4n on 26th Mar, 2017.

1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

I did a similar thing using the ms1 (on a 998 turbo) and although it worked, it was quite inconsistent. I blamed it on the ms1, I believe the ms3 will do a much better job.

It's all about getting the firing of the injectors configured . Although I can't remember what that is!

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

kinda thinking I might convert the dizzy to be a cam sensor, and loop 1/2 output into 1 injector and 3/4 into 2nd injector so the fuel charge is fired just as the valve opens so I can minimise the charge robbing with Siamese ports. thoughts ?

1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

You won't manage to solve the siamese port robbing like that. All you can do with the single TB is run it as a wet manifold system.

It works fine, not ideal, still has siamese port issues, but more tuneable than a carb.

The key was firing the injextors multiple time (4 per cycle) I seem to remember. There's lots of threads on here and other forums.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph

www.twin-turbo.co.uk

This turned up in the mail today :)

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1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

so after lots of thinking and homework I've gone down the 7 port road with efi. N I've started building my inlet manifold, which is taking some time as I drive a truck and trailer { you guys call em lorries } 14ish hrs a day.

Over a few beers and a bbq the other weekend my brother inlaw and I looked in a box and went " ohh .... that will help "

so this is what I have, yes the manifold i upside down but that mean I don't have to cut the crossmember to get it to fit, just need a bonet bulgde ....read POWA bubble :)

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1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

you might be able to just get away with kicking the back edge of the bonet up by bolting it to the higes with the rear stud on top of the hinge instead of through it. that giveabout 1.5" lift iirc.

Although progress is always slow at my end I did mange, with a bit of help from a mate, install the microsquirt yesterday. It is currently only running the ignition side of things but as time progresses it will have more jobs on it's plate. :)

1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

Welcome to TM

I have started posting on Instagram also my name on there is turbomk1golf

Nothing is impossible it just costs more and takes longer.

I'm going to be running 2 x 45 Jenvey dcoe efi " herritage" bodies ... any thoughts on them ?

1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

The jenvey heritage throttle bodies are extremely nice on an Aston, E-type etc. but on a 7/8 port transverse setup they are less than ideal Imho since they're far to bulky for the space available.

Why not run a single throttle plenum?

well I got some more time in the shed this weekend and have managed to finish the pump mount and tank set up

1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

this is the tank and pump so far, 190lt Walbro pump with in tank "sump " and filter.

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1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

So this happened yesterday

pair of 40's with mahoosive 370 cc injectors, now to make a throttle cable linkage and then send to head off to get tickled. Kawasaki valves are apparently the thing to help with gaining valve lift.

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1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

Morning, nice looking head that.
Could you elaborate on the Kawasaki valves please.
Thanks
John

I've been told that I need to track down some Kwakka valves as they are longer in the stem and possibly longer springs so I can run more lift at the valve. In the std set up it has a max valve opening of 460 thou and I'm looking at 530 thou + a buffer of 80 - 100 thou for overshoot { safety margin for those BIG rev moments} When I know what Kawka the valves come from I will put it in here :)

1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

Blimey if yours is a slow build then mine is jurassic

Don't want to piss on your chips, but how will fitting different valves increase valve lift ?
Surely this will be dictated by your cam and rocker combination and to a lesser extent the setup of pushrod/rocker geometry ?

Phil.

WWW.TURBO-MINI.COM

I'm limited atm to std rockers and at the most a cam with 296 thou lift, if I change to longer valves and another set of springs I can gain more lift { 1.5 rockers } and not have the springs bind or the valve retainer touch the stem seal / guide.

1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

Ah I see you're trying to increase the distance between the retainer and the top of the guide/stem seal to allow you to use higher lift.
What height are the guides installed at. It should be possible to have an installed height that allows over .500" lift without changing the valves etc

Phil.

WWW.TURBO-MINI.COM

So as it continues at a galical pace .... don't want to work too hard lol

It's a 110S block, Dam 5626 box with Guessworks x-pin centre ,3.44, bored to 73.5 with a set of cast pistons, 81A cam { 292" lift @ lobe, 106 deg lobe sep, 228 deg lobe duration} A+ crank @ 10-10 with A+ rods lightened and balanced, dry decked, cam belt kit and MED water pump plate.

slowly slowly ..... soon it will get it's 40mm tb's for it's last time.

Just trying to decide on what rocker cover to use, std steel, classic alloy { in pic .. period part} or the square alloy box.

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1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

Those throttle bodies would never fit under a roundnose with a plenum, its one of the reasons mine took so long.

Wolfie,

That part of the reason I like the Leylands
More room in the front and because the rear parcel shelf is reinforced I can put a baby seat in it and the missus is then happy coz it's a " family car" haha

1977 Leyland mini Sunshine -- moleseted -- Named " Ray" becoming a 7 port efi slowly
1971 Nota Fang 145 bhp 5 port fun @ 450 kg
1969 Austin 1800 ute, 1800S running gear, tip rat and hardware store runner

the trick is to use short bodies and turn them upside down so the fuel rail doesnt interfere with the bonnet, thats how it works on the 8 ports.

Here for the craic..

Supercharged Arden powered

Schrödinger's cat - so which one am I ???