Outer Limits 4x4 Board

As someone said, all you're doing is fooling the ECU into over-fuelling above a certain engine load. You can trick it any number of ways for less - adding a resistance to or across the air or coolant temperature sensor will make it enrichen the mixture, that's how those "magic" cheap "tuning boxes ...

Idle air valve sticking would be a good start - I think it's on the back of the plenum on yours. Unscrew, squirt with WD40, replace.

OK, you meant MAP, but I've still never had a problem

Fridgefreezer , how do you go with the Megasquirt in low ratio first just trickling/idling , and hitting the brakes. Apparently surge is common with MAF only units in this situation, and I have seen it with Motec on a club members car. The guy was driven mad by the car speeding up at obstacles. I ...

Forgot about the Aussie difference - and yes the early ones have the nasty hose barb connectors. Still not convinced you need to upgrade them on a stock engine and MAF sensed system, I have been running early 3.5 injectors on the 3.9 for ages with no trouble, although admittedly I have a proper* ECU ...

The AFMs were indeed made for lots of other vehicles, but they are a bit different. Jaguar ones may work (the AFMs and ECUS are interoperable) but it's not as simple as all that.

Many people swap in Lucas/Bosch ECU's and AFMs and the vehicle will run, start, drive, etc. OK, being a MAF system they ...

Beg to differ - the injectors are the same from 3.5 to 4.6.

Also one of the few advantages of Rover's mass-airflow system is that it will adjust to the larger engine size without too much drama. If it has Lambda sensors you're even better off as it will "learn" and hopefully sort itself out ...

You can "recondition" the Lucarse AFM's by popping the top and gently bending the wipers in a bit on the carbon tracks (you'll see what I mean when you're in there). Over the years the wiper wears a groove in the carbon, eventually it goes right through. If you bend the arm so it's wiping a fresh ...

Go to the scrapyard and search out a newer truck or car with at least the same power output as your vehicle, and have the filter + housing off of that.

That way you can gain a nice big filter and for those of us who started with oil baths, we can actually get a bit of decent filtration.

My current ...

There's always the LR genuine parts swirlpot (AKA "Sedimentor")
http://www.juracid.co.uk/gallery/ms/swirlpot.jpg

Not as sexy as most but it does the job. It's advisable but not essential to put a slight restriction in the swirl pot return line (biro pen cap is a good one I've heard) to keep a ...

Stick to the stock twin strombergs - I've had a Holley 390 and Weber/Edelbrock 500 on mine and both were less than ideal.

The Holley, OK not an off-road modified one, was just useless - never stayed in tune for more than a week, iced up, floats stuck, tuning screws unwound themselves and was a ...

Philip A: I don't want to start an argument but I have to say you're just plain wrong about several important things regarding MegaSquirt.

" Maybe what is wrong with his car is a combination of worn out injectors, worn out sensors, worn out AFM. "

If the injectors are worn / down on flow it ...

That's funny as all the (V8) Rangies / petrol powered anythings I've looked at have the tacho fed off the coil, maybe it's peculiar to Oz then?

There are a few fuel maps available online too, check out:
http://www.getmuddy.co.uk click on "megasquirt", or
http://www.spagweb.com/v8mini/gallery/05/01_squirting/

If you use the V8mini one you might need to adjust the MAP sensor type as Spag is running an old ...

If the air temp sensor is "out of range" (fotever the wuck he meant by that) it is probably assuming the air is really cold and chucking in extra fuel. Unfortunately the sensor is in the AFM :( although you could bypass it with a fixed or variable resistor if you fancy chopping into your loom a ...

I thought Nige had gone 5-speed now?

Whatever, the 4-speeds are indestructable - all I've ever heard is they wear out (bearings) after 40k miles or so but never actually break.

If it's just running a bit too rich there are some verys imple remedies, b*ll*cks to paying out for a new AFM, as others have said you can ditch it and build a MegaSquirt for that kinda money.

Things that can make it run rich:

- AFM thinks too much air is getting in, you might be able to sort ...

If yours is a petrol vehicle it'll probably take it's rev counter feed from the coil not the alt, so it won't matter. Have a look - if you have a wire going to the "W" terminal then it uses the alt, if not it uses the coil.

Try ringing RPi , Lund Engines , or Real Steel , they all know their stuff and are usually happy to give out advice.

If your engine has done 260k a simple rebuild with new cam, lifters and (duplex if possible) timing chain should see it much better anyway, you can stick a stock 3.9 cam in at the ...

A Phil Ringwood on the MegaSquirt Forums has a supercharged 3.5 in a kit car (Dax Tojero, basically an AC Cobra replica) that puts out over 300hp.

His website is http://www.replica-cobra.co.uk/

I hate to sound like a stuck record but for that 4.0 Disco it could be worth fitting MegaSquirt instead and have done with it, see this thread on LRE near the bottom for the discussion of handy features like switchable fuel & spark tables. It will be a bit of effort to set up (you will have to get ...

It may well be physically POSSIBLE to bore & stroke a 3.5 to a 4.6, it doesn't mean it's a good idea. Rover wouldn't have bothered casting stronger blocks if they could get away with it...

I have chatted with a guy who owns an AgRover (he's a farmer, natch) from what I gather it was a genuine Land Rover conversion for farmers to take advantage of the fact it was an "agricultural vehicle" for tax purposes. In the UK that means they run it on tax-free diesel and presumably can claim ...

You could try an Aldon Ignitor, very neat module costs about £100 UKP.

Lumenition kits are still available, http://www.demon-tweeks.co.uk sell them but there must be somewhere cheaper than them - there usually is. Lumenition themselves might sell you a spare module separately ...

The 4.6 blocks have added strength - cross-bolted mains, larger journal crank. Converting a 3.5 to 4.6 would end up with a weaker engine. See http://www.v8engines.com for the tech specs of the various blocks & what combinations can be done.

Some ex-army stuff aparrently had 4-pin diff centres, as did the 50th Anniversary 90 V8 and, allegedly, the Stage 1 V8 Series.

Only the military one would be 4.7, the rest are 3.54.

I just wandered round the scrapyard till I found an alt that mounted roughly right and had decent output - got a 45/90A (45A at idle, 90A at speed) off a ford for £15, the equivalent LR unit is about £100.

Clicky here for more info.

You might want to check out some of the links from here:
http://www.msefi.com/viewtopic.php?t=2576
Loads of injector specs.

Mine are black with a green band round them, and have a recessed end like this:
http://www.sdsefi.com/inj23.jpg
(From http://www ...

How handy - I've just picked up a 3.9 inlet & injectors which has the mechanical thingy in your photo and GREEN injectors. Should do nicely for the 4.6

Don't throw your vehicle speed sensor away just yet - check out the traction control thread!

OneTenV8,
I'll answer as I go, if you see what I mean...

1. Extra air valve / bypass valve

Does the MS support the stepper motor version ? - The MS-II upgrade and the UltraMegaSquirt will, the current MS doesn't, but I find I can live without a fast idle, it just runs a bit lumpy for the ...