Hi All, I had a similar problem with my Landcrab (big mini), running twin hs6. ended up I needed to replace the brake booster, fixed the problem. seems I was tuninng too rich at idle, too much air and then ran like crap under load.

_________________
1965 Mk1 Austin 1800
1961 Morris Mini 850

They didn't have them over here.

The one that I own was bought out by Leyland for market evaluation. It was one of two.

The one I own was equiped with a HIF44 when it was purchased from Leyland Australia by one of its desk workers, and was still fitted when we purchased it. It is the only offical Leyland Australia Mini Metro in existance as of, if memory serves, 2006.

There are other privately imported Metro's in Australia. But there is only one with a Australian paper work and Australian compliance plate.

At the time this car was bought to Australia, they had not yet been released in the UK. It was a finished car, however there were certain design features that had not been finalised.

The Leyland paper work we have which came with car advises that it was fitted with a HIF44.

Reading the Haynes workshop manual however, you do appear to be correct. It advises that the only carb fitted to the HLE by the time of release was the HIF38.
.
.
.
Doc, I'll let you have that one .... this time..... just..... ................

Well thanks for the help guys,

although i think now i am goin to take a different approach...

going to try get rid of the carby and run a EFI setup in it

only time will tell now

Very tricky running EFI on a Mini. Especially twin point. This is due to the siamese ports... one inlet valve is closing as the other is opening. Read http://www.canems.co.uk/siameseports.php

_________________

ill have a read through

Thanks for the help

If you are chasing power, stay away from the Rover SPi setup.

Great for reliability, but don't waste your cash.

Spend the cash on a new/refurbed carb and a proper tune.

The best way to fuel inject is go for a cross flow head, so bimmer twinky, 7/8 port and run individual throttle bodies.

Have you considered running megajolt? Its still a carb but more adjustability and easy to tune.

_________________
Simplify and add lightness

nah not chasing power, if i was doing that i would buy a bini...

im after reliability, have never had it right the whole 4 years its been road registered. im going to investigate the EFI more and i cant see how the Siamese Port problem should be any different to a carb setup.

im not going to use a rover fuel injection setup i will be making my own manifold and injector setup and running a stand alone computer to control the injectors and maybe the timing if i am lucky

i have spoken to a tuner and he cant see it being a problem, have to wait and see

Then you need to read the Canems stuff and the link at the beginning of it to Marcel Chichak's research or at least pass it on to your tuner. There is also plenty on the turbominis forum and elsewhere. Anything is possible but you need to be aware of the limitations...

cheers

Kevin

Unfortunatly most tuners are not aware of the problems of port injecting a siamesed ported engine. It can be done, but requires very specific injection timing, which is something most aftermarket ECU's can't provide.

Other than Canems (which I have some doubts about...) Megasquirt 2 running the Siamese injection code could be the way to go, only problem is that it is not exactly simple to implement and I only know of one running car that is successfuly using it (in the UK) so it's still in the development phase. Have a look at www.turbominis.co.uk/forums for more info.

For your setup, I'd suggest running a well setup HIF44/HIF6/hs6 on a good manifold, coupled with electronic ignition this should give a good balance of reliability, simplicity and cost, with good performance too!

Andrew

There are actually quiet a few places that do injection kits for mini's.

http://www.minispeed.co.uk/catalog/clas ... -injection

These guys (mentioned by rathcoole) are managing nearly 140bhp with efi.

http://www.canems.co.uk/canemsjenvey.php


EDIT: having said that, an HIF44 is a loooooot cheaper, and will give very good results.

True, I agree for all engines it's important, but for an A series (and other siamesed ported engines) it's even more so, it makes the difference between good AFR's between inner and outer cylinders and ones that can be very different.

I believe that 3d mapping for injection timing is essential for port injection on a Mini. This is something which is not offered by all aftermarket ECU's

Either way, in this scenario I think a carby is the go!

Andrew

It would be good if there was a simple table of potential engine power (a function of how much work it has had) versus carb options.

Or..is it more complex than that?

I suppose you could argure it's a bit chicken and egg - power is related to carb option.

_________________
Regards,

Mike
"He who dies with the most toys wins."

There is a simple table is Vizards Bible, maybe someone can post it.

_________________

Starlet Conversion:
http://www.ausmini.com/forums/viewtopic.php?t=15484

yeah, I see you saw my first post before I editted it afn001.. I only explained 1/8 of it and then couldn't be bothered writing it all out so I just kept it short and sweet.

.
.
.
Problem with the graph in vizards latest yellow book (2007) is that it is the same one in the 1984 book... he didn't appear to have looked into it anymore during those 23 years.... a lot happens in 23 years