Having planned to do a 1.8t conversion to a mems 1.9 freelander, a mems 3 freelander has come up at a good price on a Y reg so it's an early mems 3 example. Besides the obvious engine wiring harnesses and connected sensors. Is there any other difference to the hippos wiring loom or could you plug and play a mems 3 engine in a early hippo using the, engine, its wiring harness and ecu from the later one?
I think td4 is the one to ask, imagine it would all have to be plugged into a testbook ????
disco_mikey
Active Member
It's not a plug and play swap. The later MEMS uses CANBUS, as opposed to being hard wired into the ECU's
It could be done as a retrofit, but it's really not worth the extra hassle
EDIT: Re-read your post. The MEMS3 is needed for the swap
It could be done as a retrofit, but it's really not worth the extra hassle
EDIT: Re-read your post. The MEMS3 is needed for the swap
Nodge68
Well-Known Member
Are you planning to fit the turbo engine to the Y plate Freelander. ?
Possibly yes, the Missus has a T reg mems 1.9 freelander which needs a Vic inspection, plus a whole new interior, suspension etc but she loves the colour (green) lol. Then this Y ref has come up on mems 3 for silly cheap money with a gearbox issue and a couple of other niggles.
This will leave me with both freelanders in the yard to get one up and running with a 1.8T conversion in. Just trying to work out which would be the easiest to do. Rover 75s with the 1.8t engine go for less than £400 more often than not.
With the mems 3 freelander, what's stopping the 1.8t engine being dropped in using the none turbo loom that's already in there, mounted to the freelander box and getting the a turbo map on the ecu by z&f ?
Yeah, I'd be using a freelander mems 3 loom and ecu with the 1.8t engine. To try and make things sound easier, my 2 options are-
1. With the T reg mems 1.9 Freelander, fit the 1.8t engine using a mems 3 engine wiring harness and mems 3 ecu.
2. Fit the 1.8t into the Y reg mems 3 freelander retaining the standard ecu and loom.
Obviously for either, the gearbox would stay freelander, the exhaust would need sorting, ecu mapping and manual boost controller fitting but which of those 2 options would in theory cause the least headaches?
disco_mikey
Active Member
The standard ECU will not accept a positive boost pressure
The engine loom is also different, in a number of ways, as is the body loom, integrated into the 1.8T loom
Both have their headaches, and I'm still sorting my way through mine. Biggest one being the cooling fans running when they want, and not actually being controlled by coolant temps...
It could be sorted with a Kenlowe system, but I'm trying to keep everything OEM
The engine loom is also different, in a number of ways, as is the body loom, integrated into the 1.8T loom
Both have their headaches, and I'm still sorting my way through mine. Biggest one being the cooling fans running when they want, and not actually being controlled by coolant temps...
It could be sorted with a Kenlowe system, but I'm trying to keep everything OEM
I know a mems 3 stepspeed ecu from rovers can be programmed to run boost, maybe it's possible to use that, otherwise it'd be a turbo map on the standard ecu with M/boost cont.
The one thing I'm not brilliant on is wiring diagrams but I can't imagine it'd be too hard to get the engine up and running. I'll have mems 1.9 & mems 3 freelander looms, and the mems 3 Rover 75 loom to butcher up so that I can keep the body loom completely standard.
I'm happy to wire the rad fans up to a switch on the dash until those type of niggles were worked out.
The mems 1.9 freelander is already owned, the mems 3 fl1 is £250, the 75 will be about £300, after selling parts off to recoup expenditure I want the final cost of the build to come in under £1k. And that's using a diesel pg1
Nodge68
Well-Known Member
I know a mems 3 stepspeed ecu from rovers can be programmed to run boost, maybe it's possible to use that, otherwise it'd be a turbo map on the standard ecu with M/boost cont.
The one thing I'm not brilliant on is wiring diagrams but I can't imagine it'd be too hard to get the engine up and running. I'll have mems 1.9 & mems 3 freelander looms, and the mems 3 Rover 75 loom to butcher up so that I can keep the body loom completely standard.
I'm happy to wire the rad fans up to a switch on the dash until those type of niggles were worked out.
The mems 1.9 freelander is already owned, the mems 3 fl1 is £250, the 75 will be about £300, after selling parts off to recoup expenditure I want the final cost of the build to come in under £1k. And that's using a diesel pg1
The CANBUS links several ECUs together. Namely the engine ECU to the instrument pack ECU and to the ABS ECU. The instrument pack ECU uses the CAN to get engine temperature and RPM. The engine ECU gets road speed data and fuel level from the IP ECU. The engine ECU tells the ABS ECU throttle position and also receives road condition data from the ABS ECU. There's lots of data going back and forth on the CANBUS, more than mentioned here. The problem comes with loosing the CAN. The ECUs will flag up faults for missing data, illuminating warning lights and stopping things working. So you could end up with a non running engine, warning lights on the dash and an ABS system that refuses to function. I'm sure most of these can be overcome but it's not as straight forward as it would appear.
I'm currently working out an engine conversion on my MGF. I plan to fit a KV6 where the current VVC 4 pot sits. Electrically this is much less complicated as the MGF isn't CANBUS nor is the ZS180 engine ECU I plan to use.
I wish you well with your conversion, and don't forget to show us how you get on
disco_mikey
Active Member
In addition to the above, the Rover CANBUS is not compatible with the LR CAN data
It wasn't easy working it all out
It wasn't easy working it all out
If you don't mind me asking. Which loom did you use, what we're the differences between the nasp loom and the new one? Did you try fitting the 1.8t engine to the nasp loom?In addition to the above, the Rover CANBUS is not compatible with the LR CAN data
It wasn't easy working it all out
Going to look through your post on this again now lol.
Nodge68
Well-Known Member
You might be able to piggyback an additional ECU to sort out on boost fueling (SMT) springs to mind. This could allow the use of the standard ECU. The harness would need to be modified to take the piggyback unit anyway but what extra connections are needed should be easy to sort.
disco_mikey
Active Member
I used the 1.8t loom, and chopped off the (Hall Effect) crank sensor wiring, and wired it with the Freelander (Inductive) sensor and wiring
Ah right. I intend on retaining the nasp loom already in the freelander. My theory being that without the intercooler and turbo it's pretty much just a mems 3 1.8k engine (dismissing pistons/ comp. Ratio etc) so my hunch says if I dropped the 1.8t engine on using the nasp loom, it should at least fire up and tick over as the crank sensor wiring wont be an issue. Setting a manual boost controller somewhere around 10-14 psi keeps boost at a constant and does away with needing progressive boost signal from the ecu. Z&F are able to produce a map for fuelling to work with the use of this boost option as that is what the Rover metro/ MG ZR 1.8T conversions use.
What's flawed in that plan?
