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Reyland Mg Zs Turbo

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Reyland Mg Zs Turbo

Follows my complete chassis up rebuild of the Audi 20v turbo powered MG ZS built by Martin Hadland @ Reyland Motorsports

16/10/2026

Not had chance to update this , so
Much stuff to organise for the January 2027 re homing to the boat but I have been working on car when I could .

Brakes are much much better with amended brake pedal .

Car is now running better with a steady tickover and throttle response . Can’t take credit for this , John Lamsley who used to work for Emerald offered to connect up and take a look . Tried to watch and understand what he was doing but it was a blurr of activity but hearing the engine respond to his input was eye opening 👏🏻👏🏻

Should be enough to pass MOT with the cat installed .

Car began to overheat badly 😢 with the extra sensors it was clear the stat isn’t opening because the flow isn’t getting to it correctly to open it .

After doing some research and with the help of the 20v tuning guys it appears the car was never plumbed correctly which explains why I was always struggling with engine temps .

Basically the loop that exists where the heater radiator would be connected was cut and the outlet was used to feed the turbo cooling this leads to stagnent flow to turbo as water is also being fed from the block .
The cylinder head output is also used to feed the suction side of the water pump , this isn’t happening so top of head is 90° but water around the stat struggles to hit 55° due to poor flow.

Waiting for the parts to arrive tomorrow to
Re pipe and fingers crossed get it Mot’d this coming week 🤞🏻

Old cooling setup v proposed setup:

26/08/2026

Car all back together and actually driven round the estate , even with my ham fi**ed mapping skills 😂

Looks like the cooling issue has been resolved 🤞🏻

Once up to temp the car suddenly ran terrible and then wouldn’t start so had to push it back onto the drive 😡

TPS and map sensors were maxed out but as things cooled they slowly went down to the correct levels .

I was totally stumped but after speaking to Karl from emerald he was sure it was an earthing issue.

Stripped harness down and found a broken sensor earth . It’s was making contact when cold but as the loom warmed up and dropped it broke the connection.
Remade the sensor earths and added some supports for the main harness .

Brakes were terrible , the switch to manual bias box had me standing on the pedal just to stop from 20mph.
Bias ratio completely out on stock pedal . I modified the pedal to allow a 6:1 ratio so let’s see if it makes a difference.
If not then I’ll put it back to power assisted brakes as my knees not the best from too many motorbike accidents 😢

26/08/2026

Ok been a mad few months . Decided to call it a day paying out thousands each month on four walls .
Bought a wide beam 65ft x 12ft barge 😂

Will be moving to it permanently in Jan 2027.
Can’t wait , it’s so quiet and secure compared to bham these days !

Gotta get finger out now and get the car mot’d so I can drive it to site / storage area . 😊😊

20/02/2026

Well I got bored waiting for the weather to improve and get the car mot’d .
Back on track with 2 wheels this year, just gotta get it running after sitting in garden for 6yrs . 🤣

22/11/2025

Having decided to right this year off I have found some motivation again to fit a few bits and pieces .
Not started the engine again but that will happen at some point to see if cooling issue sorted .
Cars pretty much together bar the front bumper but that will happen along with making up a front splitter and carrying out some touch up’s .

Swapped out the stock rocker cover with an updated item with built in an10 take off’s .
Had to make up a mounting bracket for heat shields but it’s come out ok .
Colour slightly off from the Kawasaki green sprayed in the Uk but I can live with it .

30/08/2025

back together and all appears to be working this time .

Most of the programming is complete , just need to get my head around setting up the start button to act as a start / stop but it’s not essential.

Enough now , will go for startup tomorrow.

Time for a glass of red and qualifying 👌

29/08/2025

Trying to get movivated again!

Engine refused to start and with afr sensor reading bouncing around I pulled the dash again.

Plugs only sparking for a few seconds and then they all stop.

Seems I wasn’t paying attention and connected the lambda heater to the ECU earth that runs all the sensors 🤦‍♂️

Connected straight to chassis but no difference.

Ordered the new v3 Spartan controller .

Rewired the new controller and double checked everything ECU wise .

Afr now stable and showing as it should and the plugs sparking continually on turn over .

Tomorrow will be getting the dash back on and hopefully fire the motor again with a working wideband . 😁😁

14/08/2025

None car related .

Having now lost 3 close ppl in 18months which has knocked a lot of the stuffing out of me , I just wanted to say don’t take those close to you for granted and assume they will be here forever.
Hold them and tell them you love them while you can , they can be gone in an instant . 😢

Just as I was getting motivation back life just wanted to give me 🖕🏻🤦‍♂️

Take care ppls 🙏

30/07/2025

So still problems with afr stuck at 14.5

Spartan startup seems ok 1.6v then 3.3v but pins back to 2.2v / 14.5afr

Checking the sensor for heating and it’s stone cold after nearly 5mins 😢

Dash back off to get at the unit and check the wiring is 100% but don’t see why it would suddenly have an issue .

I’m guessing the controller has failed ffs 😡

27/07/2025

Fingers crossed I’ve cured the overheating /flow issues , if this doesn’t do it then I’m
Just going to remove the stat 😞

Stripped everything off and bore scoped all the water ways / pipework to make sure I’ve didn’t leave anything inside . All clear

Re done the feed and returns for turbo / wastegate cooling . Opened up to an8 and then dropping down to an6 / an4 respectively. Same for returns .

Engine clearly running very rich but something was up with wideband as it constantly stuck a 2v / 14.5afr .
Replaced sensor and wiring with new units / pre made loom back to Spartan controller . Hopefully the unit is ok .

Funk motorsport heat blankets fitted to turbo & wastegate .

Just waiting for a couple of replacements pipes and I’ll try it again . Bloody thing does not want to leave the garage 😂😂

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