EFI on a 7-Port
Turbo Mini Forums

Guys,

I'm absolutely illiterate so far as fuel injection goes, so I'm trying to simplify matters, whilst trying to get good power. So sorry if I'm throwing in crazy ideas.

Since siamese ports create the biggest efi headache - what if I used a 7-port with a separtae injector for each inlet?

Would that be simpler?

I hope I posted this on the correct section...

Cheers,

Mark

Edited by AlexF2003 on 9th Jan, 2006.

I donated, but somehow didn't get the label! :(

it would be very easy todo ona 7 port

Team www.sheepspeed.com Racing

If you are using a 7-port head all the EFI problems go away. A simple setup of one injector per inlet would be the way to go.

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

A man without a project is like a like a woman without a shopping list.

Some good news at last!

So, if I'm gonna use a Megasquirt, what should I be buying? Or should I use Weber Alpha throttle bodies?

So, to recap, I'm thinking of a hybrid T25 (Mirage Setup) boosting through an intercooler situated on top of the rocker cover (Lancer Evo Bonnet Vent), feeding into the front throttle bodies. I just hope everything gets to fit!

I donated, but somehow didn't get the label! :(

if your using a 7 port you should be able to use the metro manifold and turn it upside down to position the turbo above the bulkhead to avoid the clearance issues.

But wouldnt that mean that the exhaust would be pointing upwards? Or is the flange symetrical and I can just fit the turbo "upside down"?

I donated, but somehow didn't get the label! :(

yep the exhaust would point up, but as I have a MK1 i'll be making a new exhaust elbow rather than putting in a bulkhead box.

This would work very well and you are free to use the inexpensive megasquirt ECU.

Rather than use individual throttle bodies, it would be better do as dave is doing and make up a manifold with injector bungs in it along with a plenum, at the end of which you have a single throttle body. This is the way I am going as well with the 16V magazine project car along with a charge cooler built into the plenum chamber.

We have just signed up a freelancer in Malta so expect some Malta Minis in the magazine as well as event coverage. Seen some amazing pics of local minis, quite some scene there. Good luck!

Peter

Editor

MAGA7INE
Seven Magazine
The brand new quality Classic Mini Tech and Journal
Issue 1 out late 2027.

Why not do a "tractor" exhaust à la Carl's drag Mini?? One 3" pipe poking out of the bonnet would look great

Vegard,

This is a road Mini... it's already got anice stainless twin DTM waiting! I once was going to have chimneys from my bonnet, but then I sold the Weber IDE downdraft to your goodself!

So, having a single BIG injector, would it mean that it would be an "always on" injector, with no timing necessary? Just a flow increase based on throttle input?

Sorry to ask something this stupid, but I'm still lost in terms of fuel injection, and with what a brand new turbo SU costs, I might as well try to go to efi.

Mark

Edited by MaltaMini on 10th Jan, 2006.

I donated, but somehow didn't get the label! :(

I think you have misunderstood. MAGA7INE is suggesting using one throttle body into a plenum and then 4 injectors (one in each inlet port).

The injectors will be controlled the same as using 4 throttle bodies, but with only one throttle body it'll be a lot cheaper. And easier to manufacture for a turbo installation too.

Wil

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

www.twin-turbo.co.uk

Something a bit like this...

http://www.twin-turbo.co.uk
http://www.hillclimbandsprint.co.uk/default.asp

A man without a project is like a like a woman without a shopping list.

Everyone to his own, mates! When I bought the DTM it was all the rage in town... unfortunately times have moved, but by the time I finish my Mini, it will probably be listed as "period tuning item"

As for the installation, since I'm fitting the intercooler on top of the rocker cover... I'ld just need the intercooler to take in air from the back and expel it from the front.

Has anyone seen a 7-port fitted in a Mini? How much is the clearance from the front bonnet panel?

I donated, but somehow didn't get the label! :(

Here's a link to some pic's

http://www.akmracing.dk/pictures.htm

The bonnet will fit over webbers with shortish ram pipes but not really leave any room for filters, basicly if you make somthing like the pic Ben posted it should fit no probs, but if you try to use throttle bodies there'll be no room for a plenum.

Edited by Joe C on 10th Jan, 2006.

Nice one mates, thanks....

So I guess I'll have to fabricate a plenum in the correct shape and size, with the correct cross-sectional area , fed through a throttle body..

And once I'm at it.... any idea how people manage to get to the dipstick on a 7-port or 8-port? Should I fabricate an extension pipe and fit a more flexible one so that I can access it sideways, or should I just get it out, houdini style, between the throttle bodies?

I donated, but somehow didn't get the label! :(

Thats a good point, some thing I havent thought about yet.

I recon that you should be able to use one of the long stainless dipsticks with the anodised end and put a bend in it.

An alternative would be to use a dipstick like the one on the Megane 1.6e, which is basically veeeery long and flexible, and fit it to an elongated rubber pipe from a sleeve fitted to the block (if we're talking about A+) The length would have to be cut accordingly and new marks made, based on those of the Mini dipstick.

Another problem I see is that, having the intercooler on top of the engine - how do I fill it with oil?

I'm thinking of fabricatng my own rocker cover by taking a standard one, raising it to clear the 1.5 rockers, close the existing filler hole, then fabricate an L-shaped filler duct from the side..

But then maybe I should just have the intercooler fitted with quick release clips...

I donated, but somehow didn't get the label! :(

I'm planning to put the intercooler in front of the engine as there will be extra space from not having a distributor. That way it gets air flow through the grille.

I was toying with the idea of having the intercooler and plenum as one unit ( 4 outputs from the intercooler rubber coupled straight into the engine) with the throttle on the inlet to the intercooler but thats probably a bad idea from a lag point of view.

just a thought, you could use the vent from the dropgear case as a filler point.

Edited by Joe C on 10th Jan, 2006.

Yes, just as Ben's picture shows. Simple and cheap, even if you get it fabricated, it will still be less than throttle bodies and you can fit it into the avaliabe space and have the throttle point where ever you like to suit your intercooler.

I am using a MPi radiator at the front of my engine and an Audi TDi intercooler in the original radiator position, (almost a perfect fit), as well as a charge cooler built into the inlet manifold. The IC will be angled with a duct on the inner wing along with an electric fan to cool it properly. If you use a custom radiator like a Miglia, you can probably squeeze in the IC at the front as well, certainly on a flip front.

I am using a removable steel front keeping the inner wings so it all looks factory and keeps the mud off the engine and water out of the electronics.

Peter

Editor

MAGA7INE
Seven Magazine
The brand new quality Classic Mini Tech and Journal
Issue 1 out late 2027.

I'm planning on using an mpi radiator as well, with an intercooler on top of the engine. I'm partially removing the inner wings, but I'm going to have aluminium wheel liners and iron bracing. The bonnet and wings will become a clamshell bonnet - hopefuly in carbon fibre if I get someone to do it for me - didn't even get a reply from Ian Curley! :( The non-essential underononet items would then be moved over the wheels.

The electronics will have a bay in the dashboard to keep out of harm's way, and an RX-7 style dash is planned for the interior - I like forard driving positions anyway, s I dont mind having the seat set a bit forward.

The most masochistic part, however, is how I'm going to try and find room for a heat exchanger and compressor unit for an a/c unt (in place of rad, hopefuly). It will all depend on how the injection system would fit in...

I donated, but somehow didn't get the label! :(

I would just keep the inner wings, but it's your call obviously. Mine will be removable using dzus fastners or rivinuts for access.

Snap on the air con! Mine is a daily driver 20k miles a year Mini and after our last summer, I need this!

I found Vintage Air have the absolute best systems for small cars, check out their website and look for the Mini coolers Gen II and the Short Pack Mini space saver system that has a really nicely packaged heat exchanger and the control unit is only 18" long and 7" deep, 8" high! You can also have an electric water soleniod for electronic control of defrosting etc. Very nice!

http://www.vintageair.com/catalog.asp

Also you have to love the 200mph studebaker with air con, though the vid is a bit cheesy.

Peter

Editor

MAGA7INE
Seven Magazine
The brand new quality Classic Mini Tech and Journal
Issue 1 out late 2027.

(OT-Sorry) There is a bit of talk about fitting AirCon over on the 16v mini site - i think, under the Vtec forum...

This will fit:



and I hope to have it running on the weekend.

www.starchak.ca and www.TDCperformance.ca