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J.R. Mackays Diesel & Motor Engineering began its operation in 1946 and has developed into a modern automotive machine facility with specialized machinery for crankshaft grinding, reboring, lineboring, surface grinding, connecting rod resizing, cylinder head re-machining, complete engine rebuilding, assembling and dynometer testing.


Our reputation for quality and service is unsurpassed.


Our expertise and workmanship on the engines are transferred to new artisans and our company has also been acknowledged as an accredited training facility by Marseta since the year 2000; with ongoing training with our qualified automotive machinists and assemblers in various fields on different types of engines.


We continually strive to maintain a safe working environment for our employees as per the Occupational, Health & Safety Act 1993 through continuous baseline risk assessments and improvements.


We repair and recondition engines such as VOLVO, ADE, Ford, Lister, Perkins, John Deere, Toyota Truck, Fiat, New Hollard and Nissan Diesel.


We are an approved VOLVO PENTA service provider for parts and field services.


We rebuild and dyno test all makes of engines – mechanical or electronic. We have a CERTEX - SANS 868-1-1 permit to apply certification marks on flameproof engines in fiery mines. We have also acquired our DEKRA ISO 9001:2008 certification for the reconditioning of diesel and motor combustion engines.


Our banking partner is Standard Bank, and has been since 1948.


We have a fairly large workshop with 99 employees and an average of 24 years of services with us, ensuring you TOP Quality Workmanship.


We offer 24 Hour Field Services.  


Our guarantee for complete rebuilding of engines are 12 month / 1000 hour .


JR Mackays
Diesel & Motor Engineering (PTY) LTD
“JR Mackays is one of South Africa’s best equipped diesel and petrol engine rebuilders.”

Send Us A Message

jrmackay@mweb.co.za