MG Sports Cars

I have a 3.9LRoverV8 in a 79 MGB, with Edelbrock carb. I'm thinking about converting to Fuel Injection. Is it best to find a "used" Rover 14CUX, or is there a good aftermarket product out there?

The MegaSquirt system is pretty good.

JB

I second the Megasquirt system. I have done 3 cars with it now and I love it! Bit of a learning curve at first but if you persevere you will be very pleased with the results.

I'll give a nod towards the megasquirt as well.
" A bit of a learning curve at first" might be a bit of an understatement.
The system is very good but by it's very nature it can be very complex to construct and tune.
If you've never done this before be prepared for a technical overload.
Information is available everywhere. And that's the biggest problem, too much info.
Download the Mega manual and read it a few times until you get the feel for the system and it's capabilities.
If this is a little too much for the first time have a look at something like the Simple Digital System.
It comes pre assembled and is tuned with a small hand held programmer that is very easy to use.
Not nearly as comprehensive as the megasquirt but performs well and doesn't cost the earth.
Please remember that this is just the electronic portion of the fuel injection system. You still need the hardware such as manifold, injectors, fuel pump, throttle body, sensors etc.
If you can define the use of your car, current and future mods to the drivetrain and a budget. I'll bet you get a few very good suggestions on a full system.
Cheers
Fred

Didn't think "Megasquirt" was complete - want to do this to learn, improve emissions and mileage. Not sure about budget - can it be done for $2K? Live
in WI, so thought of this as a good winter project. Where do you start for the "hardware" side of project? Thanks!

Pretty much the same hardware as any other EFI. Start here:
[www.megamanual.com]

JB

One good alternative might be to use the Rover mechanical components: manifold, plenum with integral throttle body, fuel rail, injectors, etc., etc. - except discard the Rover mass airflow sensor - and then use the Megasquirt controller in lieu of the Rover electronic controls.

I don't see any way that MegaSquirt comes out more cost-effective than the Rover system.

The Squirt won't be any more cost effective than the Rover ecu.
But it will be able to be tuned where the Rover can't.
With careful shopping a $2K budget is realistic.
For the first foray into megasquirt territory I would suggest a GM TBI throttle body.
It can be bolted onto the Edelbrock manifold with a readily available adapter. It has the injectors, throttle, TPS, IAC and fuel pressure regulator all in one handy package. It can easily provide enough air and fuel for a modified rover engine. It's very short so no hood clearance issues. The only extras that are needed are a coolant and air temp sensor and a fuel pump. You can even keep your current air cleaner.
The techies will poo-poo the TBI idea but until your building some serious horse power you will never notice the difference.
Besides when you are ready you can just switch out the intake for a port injection system and you'll have the basics in place for the rest of it.
For a fuel pump I would look to GM as well. An intank unit with modifications to fit into the MG fuel tank would work well.
Might as well use the GM temp sensors too. The megasquirt is set up for them anyway.
An afternoon at your friendly wrecking yard would probably get you everything for a buck and a half or less.
Your local parts store will have all the GM connectors and pigtails in stock for a nice professional looking job.
New fuel lines are recommended. Lots of cars are running the stock ones with no problems but, they are right on the edge of being too small. And who wants to put a potential 200psi into a 35 year old rusty fuel pipe? An inerta switch is a must and so is a fuel pump relay.
A GM fuel filter would also make sense. If all the peripheral parts are from the same car it makes a visit to the parts store a lot less stressful.
Thats all I've got for now.
Hope it helps
Cheers
Fred

I kept pretty good track of my purchases for doing my B with Megasquirt and I spend just a little over $800 for everything including the EDIS ignition components. Most parts were sourced on Ebay, but also a couple from the local junkyard. It can be done very budget friendly if you are patient and like junk yards :)

There is a company in the UK that is selling a complete plug and play Megasquirt 2 for the Rover V8. I have no experience of the company but the owner claims that he was one of the authors of the msextra code. This is a complete kit for both injection and ignition and retails in the UK for £540 plus VAT which should be deductable if exported. The company is at www.extraefi.co.uk There are other suppliers of Megasquirt for the Rover V8 that seem to specialise in off roaders, if you want to look at them google Megasquirt Land Rover. If I can help with any other info just ask
Philip

I have a 14CUX system on a 4.0 Rover in my 1966 roadster. I first installed the system on the original Buick 215 then swapped over when I changed motors.

You can source all the Rover parts on E-Bay for as little as $200.00 with careful shopping. I used a fuel pump & filter from a Turbo Volvo 240 for about $60.00 used.

Ted at TS Imports has a complete Rover system on E-Bay asking $400.00.

The Rover 14CUX is adaptable to performance upgrades such as cam changes without any changes as it adapts without re-flashing or new chips. Special chipping will add to performance, but they are for the vary serious. The factory system does not control ignition which is both a plus and minus. Plus is simplicity as you retain the original distributor, no need for a crank trigger. Minus is that the timing is not computer controlled.

I would suggest starting with the Rover system you can install in day, plus fuel line/tank mods, run it for a while, then decide if you want to swap in a Megasquirt. .