Grease Monkey Motor Garage

Official page of Grease Monkey Motor Garage. We make the fastest, coolest road cars around, and we h Tuning, remapping and performance exhaust systems.

Service , repairs and performance.

Photos from Grease Monkey Motor Garage's post 04/05/2022

How to identify Nitron at this year’s ! 🔥🔥🔥Be sure to see us at Waterfront Drive on Friday afternoon at 17:00!!

Thank you to all our sponsors!

Photos from Grease Monkey Motor Garage's post 03/05/2022

Some last minute testing and also supports in to keep the boost pipes from popping off!
Tomorrow is loading day and we are ready to rumble.

We are so happy to share this journey with all of you and thank our sponsors!


Final Adjustments on the M250D dubbed ‘Nitron’ today and tomorrow before loading!
We are extremely excited to get going this weekend with some intense racing and good times!
Keep an eye on us for daily updates throughout the week🔥☄️

Photos from Grease Monkey Motor Garage's post 27/04/2022

Oh boy are we excited for after a successful test day!
The M250D boasts some significant upgrades since last year’s Simola Hill Climb and we are so happy to say that it has come together perfectly thus far!
Just little bit over a week to go but keep an Eye on our pages for updates to come🤘🏼


Around the clock working , aerodynamics/ weight off etc

Getting ready for Simola Hill Climb,,,

Still have to do test runs this week and final suspension setup..

Then do the time runs we promised before hill climb...


So do you know how valve float can happen?

BMW N57/N47 diesel engines has very weak springs from factory. This causes these engines to stop power production with higher boost pressures , issue gets worse with more boost and exhaust manifold pressure.

If the valve springs are weak, the springs may not be able to push the valves all the way shut before the next opening cycle begins. If the valves fail to close, the cylinders will lose compression causing the engine to misfire and loose power.

Fitting performance/stiffer valve springs can prevent valve float.

We fit valve springs in place without removing the head.

PS almost ready for our test runs before Simola Hill Climb.


Work work work!!!
Bumper respray on the m250d
Nitrous setup this week ... dyno time.
Hopefully Sunday can run my times.

Time is everything. Speed is of the essence....

Photos from Grease Monkey Motor Garage's post 13/03/2022

Never let someone dim your lights simply because it's shining in there eyes!



Photos from Grease Monkey Motor Garage's post 10/03/2022

Late night suspension setup...
Big thank you to Ben, you can't buy experience...


Gearbox tuning, programming...
Almost ready for testing!
M250d Xdrive


M250d Xdrive conversion done! Only one is SA. we coming with a bang!
More mods coming.......


Beautiful Ferrari Testarossa!


9hr Kyalami

Photos from Grease Monkey Motor Garage's post 05/02/2022

Kyalami 9hr


BMW M2 50d is attending the Simola Hill Climb 2022...
New features and design..
What will it be???



Love from Grease Monkey Motor Garage team!



Thank you to all our customers for their support over 2021.
We will see you in the New Year!
We are closed from the 15th Dec to 3rd Jan 2022.
We wish everyone a Merry Christmas and Happy New Year!


Max Vs Lewis
2 great drivers.
Well deserved Max!
Awesome racing.


“To give real service you must add something which cannot be bought or measured with money, and that is sincerity and integrity.”

Photos from Grease Monkey Motor Garage's post 12/11/2021

New design/developments for BMW M250d @ Simola Hill Climb 2022.
3d Imaging ,,,
Aerodynamics ,,,,

If you want something you never had. You have to do something you've never done!




IGNITE, WOW amazing dancing....
Dance is the joy of movement and the heart of life ❤


At the end of a rainbow is a pot of gold and a BMW! ;)

Drive safe guys, roads a slippery...


BMW M250d and M140d.

2 developments that we so very proud of!
Thanks to all the support!

Photos from Grease Monkey Motor Garage's post 24/10/2021

Wow this Ferrari is next level!


BMW M town!
New M4 pull off!.


BMW M town.
M4 Doughnuts!

Photos from Grease Monkey Motor Garage's post 16/10/2021

BMW M Town..


Black lines M2 50d
Seconds lost!

Too much wheel spin. Definelty something we looking at rectifying.

/ well done keeping it on the road 👏


BMW 320I
Perf exhaust. Stage 2, VMAX, burbles. Twin pipe exit.

Did you know:
BMW Race DTM cars are powered by a 20l 4cyl turbo engine with 610hp.


Water M**h!

What are the benefits of water methanol injection with diesel applications?

Reduce EGT's by upto 250 degree's.

Increased power by 10-15%

Allows the use of higher boost levels for greater power gains.

Increased fuel economy.

Decreased emissions.


It’s not even Thursday but we definitely want to throw back to Knysna!

We have received confirmation that the M250D is currently the fastest Diesel Powered Modified Saloon to ever go up the hill at Simola Hillclimb!

We have also hit an all time high Boost level of 4 Bar!

Two awesome facts from our first ever Hill climb event!

Huge congratulations to Gary Martins and the team!


And that’s a wrap!
We are done for the weekend!
Our best time was a 48.027 in the last qualifying round, unfortunately the whole qualifying 6 was canceled due to a crash and our time did not count.
The class finals consisted of the top 3 from each class and we missed it this year!
We are super happy with the weekend and we are excited for the next one!
Thank you for the massive amounts of support leading up to this weekend!
Goodbye for now🙏🏼


So close to breaking into the 47 seconds!
We ran a 48.027 in the last qualifying round!
The finals are going to be spectacular!

Tune in live on
Or keep an eye on our Social media pages!


Qualifying #4 and first of the day we managed a 49.2!
Minor changes and heading for another sub 48😎

Watch Live at
Or keep an eye on our social media!


Our last day here at Simola Hillclimb! Get ready for another action packed day😎

Keep an eye on our facebook and instagram accounts for updates!
You can watch live on:

Videos (show all)



2157 Hendrik Verwoerd Drive, Hennops Park X 42

Opening Hours

Monday 08:00 - 17:30
Tuesday 08:00 - 17:30
Wednesday 08:00 - 17:30
Thursday 08:00 - 17:30
Friday 08:00 - 17:30
Saturday 08:30 - 12:00

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