mems1 to mems3
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Not many rules really, this board being aimed at technical issues, it shouldn't fall foul (hopefully) of some of the more personal issues that can affect forums.
Rule 1 - Is that you need to think very carefully before posting anything technical or asking anything technical relating to the security system of the car - See 'Security Issues' sticky for more info.
Rule 2 - We (MGF Register) do not support copyright infringement and therefore references to CD ROM, PDF versions or paper copies of the workshop manual (for instance) should not be posted on the forum. We don't want to get into trouble and we'd rather sell you a genuine hard copy through our Regalia shop anyway!
Because advice is honestly and freely given in this technical section, much of it will be amateur experienced based, so any information is given in good faith and is not guaranteed as correct.
Not many rules really, this board being aimed at technical issues, it shouldn't fall foul (hopefully) of some of the more personal issues that can affect forums.
Rule 1 - Is that you need to think very carefully before posting anything technical or asking anything technical relating to the security system of the car - See 'Security Issues' sticky for more info.
Rule 2 - We (MGF Register) do not support copyright infringement and therefore references to CD ROM, PDF versions or paper copies of the workshop manual (for instance) should not be posted on the forum. We don't want to get into trouble and we'd rather sell you a genuine hard copy through our Regalia shop anyway!
Because advice is honestly and freely given in this technical section, much of it will be amateur experienced based, so any information is given in good faith and is not guaranteed as correct.
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- Model of Car: MGF Abingdon LE VVC
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Re: mems1 to mems3
Along with the TF auto test and maybe sprint project thats in the pipe line for me and tony, I'll be garaging frankenstien at the end of july as I'll be away for a while with work, when I return and have a week or so time off I'm planning on finally fitting the correct head to the car. So makes sence to remove the subframe and hence engine and make good of the info here and turn it to MEMS3. Plus then the rear of the car will be puka!
I sadly just gave away the engine loom from the TF and ecu, so I'll be looking for another set as well as a rear subframes complete.
When it comes to the loom I'm after a wiring diagram so I can correctly splice and reconnect plugs ect, as for the injector loom I've got that already, I have the spark leads, the ivac from the inlet manifold but looking at it its just a connection difference but the maf sensor is there so may just change the whole inlet. The sensor are cheap and as I'll be looking to have the ecu fettled with I can turn off the rear lambda so loom and ecu is all I'm needing. I THINK...
Wow it sounds so simple in my head lol
I sadly just gave away the engine loom from the TF and ecu, so I'll be looking for another set as well as a rear subframes complete.
When it comes to the loom I'm after a wiring diagram so I can correctly splice and reconnect plugs ect, as for the injector loom I've got that already, I have the spark leads, the ivac from the inlet manifold but looking at it its just a connection difference but the maf sensor is there so may just change the whole inlet. The sensor are cheap and as I'll be looking to have the ecu fettled with I can turn off the rear lambda so loom and ecu is all I'm needing. I THINK...
Wow it sounds so simple in my head lol
- Rob Bell
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Re: mems1 to mems3
Yes, a few people have done it. Jon, who posts as Quick Spider has experience with this conversion toowebba wrote:i pm 'd and emailed Matt biut had no reply maybe he is away. is there anybody else that knows how to make a coversion lead?
- RobboMC
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Re: mems1 to mems3
Is mems3 really that much more desirable? What are it's benefits over mems1.9.
If it were me making all these changes I would want to also change the cams and go for a Lotus type of engine with more horsepower.
If it were me making all these changes I would want to also change the cams and go for a Lotus type of engine with more horsepower.
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Re: mems1 to mems3
It's the remapping which makes the mems3 desirable.
The lotus engines generally don't have any more horsepower than the mg/rover equivalents - the exceptions being the s1 135 (120 with ported head) and sport 160 (120 with ported head, hotter cams)
The lotus engines generally don't have any more horsepower than the mg/rover equivalents - the exceptions being the s1 135 (120 with ported head) and sport 160 (120 with ported head, hotter cams)
- Rob Bell
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Re: mems1 to mems3
The S1 Sport 135 I don't think used a ported head Jon - although I may be wrong. I have a pair of Lotus Sport 135 cams (identical I believe to the R140 cams used on the TF135) which I presume was lifted from a S1 Sport 135 which has been fitted in Project Shed's engine - which, with an otherwise standard head, gives... 134bhp
But that's off at a tangent: completely agree with you regarding MEMS3 desirability. As standard, it provides the same power as the earlier versions of MEMS, albeit with smaller injectors and better emissions. But the general interest is indeed the ability to remap it - and this is a cheaper route than buying an aftermarket ECU (and aftermarket ECUs are, in any case, banned in my preferred Sprint class regulations).
But that's off at a tangent: completely agree with you regarding MEMS3 desirability. As standard, it provides the same power as the earlier versions of MEMS, albeit with smaller injectors and better emissions. But the general interest is indeed the ability to remap it - and this is a cheaper route than buying an aftermarket ECU (and aftermarket ECUs are, in any case, banned in my preferred Sprint class regulations).
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Re: mems1 to mems3
Maybe it's just the later 135s then - Roger from Sabre Heads did lots of work on the porting whilst working for Janspeed. IIRC they did over 500 heads, and they were often gave results over 140, but didn't want to encroach on the S1 111S market which had the 143 VVC.Rob Bell wrote:The S1 Sport 135 I don't think used a ported head Jon - although I may be wrong. I have a pair of Lotus Sport 135 cams (identical I believe to the R140 cams used on the TF135) which I presume was lifted from a S1 Sport 135 which has been fitted in Project Shed's engine - which, with an otherwise standard head, gives... 134bhp
But that's off at a tangent: completely agree with you regarding MEMS3 desirability. As standard, it provides the same power as the earlier versions of MEMS, albeit with smaller injectors and better emissions. But the general interest is indeed the ability to remap it - and this is a cheaper route than buying an aftermarket ECU (and aftermarket ECUs are, in any case, banned in my preferred Sprint class regulations).
- Rob Bell
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Re: mems1 to mems3
Equally possible that these cams were slightly different then... I'll have to do some digging now!
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Re: mems1 to mems3
Mate you've gave me the bug, very keen to do this now, having a quick chat when you visited is this still achievable with my VVC, for example the loom off a TF will be ok with the vvc mechs?quick_spider wrote:It's the remapping which makes the mems3 desirable.
What kind of price am I looking at for a retune?
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Re: mems1 to mems3
let me know what you need Rob and I will send it upRob Bell wrote:Ha! Thanks for confirming that Jon - I thought that it what Rob meant, but you've saved me the trip into the garage to check.
Hmm, so the question is whether the looms I have in the garage also include the MEMS3 injector loom...
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Re: mems1 to mems3
Your best starting point if you're going to drop the VVC head back on your engine is to get hold of a MEMS3 VVC loom - pref from a TF160/Trophy F rather than a ZR160/25 Gti loom most of the wires will be the right sort of length (The ZR has a slightly different layout engine bay - eg fusebox etc...)chrisrigby wrote:Mate you've gave me the bug, very keen to do this now, having a quick chat when you visited is this still achievable with my VVC, for example the loom off a TF will be ok with the vvc mechs?quick_spider wrote:It's the remapping which makes the mems3 desirable.
What kind of price am I looking at for a retune?
Remaps are around £250 IIRC, but there are normally group buys at the big events where they can be done for £200.
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Re: mems1 to mems3
Cheers jon been round to see tony tonight had a quick chat ref this.... got a frame so I can do the head change at the same time as replacing the head back to vvc.. Tonys got me a ECU and inlet manifold, I have the injector loom and tf sensors so just need the loom now and the work can begin....
just need to workout the remapping of the ECU now!
Jon would I be able to rig this all together and if I manage to do the loom correctly would the car run well enough to take somewhere to tune??
just need to workout the remapping of the ECU now!
Jon would I be able to rig this all together and if I manage to do the loom correctly would the car run well enough to take somewhere to tune??
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- RobboMC
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Re: mems1 to mems3
talkingcars wrote:Why?RobboMC wrote:I've just done this the other way as my new engine was MEMS3 and the car is MEMS1.9.
Out here in Australia it can be difficult to get the variety of second hand parts that you have in UK. I would have needed to source a MEMS3 ECU,
and a MEMS3 engine loom as well as the coil packs.
I had all of the MEMS 1.9 parts from the old engine, so it was just a matter of swapping them in onto the new block/head assembly.
The new engine was far too tempting to pass up, even though it was MEMS3 instead of MEMS 1.9. It has new pistons, rings, head gasket, refitted valves, etc etc.
In the end I just chose to stay with the MEMS 1.9 as the improvement in power seemed small compared to the cost and effort of conversion.
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Re: mems1 to mems3
I now have a complete tf 135 car loom and a complete trophy 160 engine loom and ecu. I laid the loom out on my lawn and now I am shitting myself I will need to label all the conectors befor I start I recon can anybody point me to a wiring diagram. also I there anybody that fancys giving me a hand that will be really cool eletrics terify me
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Re: mems1 to mems3
I'd love to come lend a hand but if away with work for a while my conversion will start when o return in late Oct love to know any problems or tips you may have when your done.
Re: mems1 to mems3
Where are you in the midlands? if your close enough I wouldn't mind.webba wrote:I now have a complete tf 135 car loom and a complete trophy 160 engine loom and ecu. I laid the loom out on my lawn and now I am shitting myself I will need to label all the conectors befor I start I recon can anybody point me to a wiring diagram. also I there anybody that fancys giving me a hand that will be really cool eletrics terify me
There are wiring diagrams on Dieter's site
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Re: mems1 to mems3
Thanks carlvk, I am in South Notts NG13 ,
Re: mems1 to mems3
Hmm sorry that is a 180 mile 3hr round trip for me, that's a shame I would have liked to look at that.
I hope someone nearer can help
I hope someone nearer can help
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Re: mems1 to mems3
what my project build or the loom?
Re: mems1 to mems3
The loom part interest me. ATM I am considering lots of options for my next mgf related "fix" I am watching your project with interest.
I had to go through a '97 Nissan micra loom when I changed the engine in my buggy to the 16v micra engine. I enjoyed that. It was complicated by not having a similar vehicle to transplant it to and having to work out what did what but I got it running well in the end.
Now my MGF is largely sorted I miss getting my hands dirty.
I had to go through a '97 Nissan micra loom when I changed the engine in my buggy to the 16v micra engine. I enjoyed that. It was complicated by not having a similar vehicle to transplant it to and having to work out what did what but I got it running well in the end.
Now my MGF is largely sorted I miss getting my hands dirty.