Combustion Consulting is led by seasoned Sales, Aftersales and Service professionals with more than 40 years' experience across the industrial engineering and OEM product sectors.
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Sales plans, forecasts, pricing frameworks and KPIs, tailored to industrial, construction and marine markets.
Recruitment and onboarding, performance assessment, development plans and network expansion strategy.
Process analysis and restructuring, engineer deployment and recruitment, multi-site service planning.
Parts revenue, service plan design, margin improvement and warranty process, worked as a profit line in its own right.
Click a point to hold it
He has run the manufacturer’s parts division and its service centre, and then spent 23 years buying and selling from the other side of the same table. Both halves of the engine trade, from the inside.
Every enquiry reaches Graham himself. No account manager, no research team, no handover.
Our expertise supports manufacturers & suppliers, OEMs, distributors and service providers looking to enhance profitability and customer satisfaction.
We help organisations strengthen commercial performance, refine service operations and improve dealer network effectiveness.
Sales plans, forecasts and pricing frameworks built for industrial, construction and associated markets.
Detail → 02Parts and service revenue, margin, service plans and warranty process, treated as a profit line in its own right.
Detail → 03Process, engineer deployment, technical support and multi-site planning, from someone who has run them.
Detail → 04Recruitment, onboarding, development plans and expansion strategy for UK and international networks.
Detail →Combustion Consulting is taking on its first engagements. Graham has been doing this work for more than 40 years, and rather than pad this page out, we have set out exactly where that experience was built and exactly which numbers each service area moves.
So rather than pad this page out, we would rather show you the method now, and the results as they come.
Petter Diesels, Lister-Petter, Deutz UK and E P Barrus, from a five year apprenticeship to running a service centre and a parts division.
Track record → 02Twenty seven measures across the four service areas, from installed engine population to absorption rate. If you already track them we start there.
The method → 03Two days on site and a written report you can act on. The first few run at a reduced rate in return for permission to publish the result.
What you get →We actively welcome new partnerships. If you're expanding your product range in the UK, or you're a manufacturer not yet represented here, we can act as your local point of contact - managing relationships and ensuring your products are effectively represented.
We also offer guidance and support for, and are eager to undertake industry associated project work.
Regions led
Markets served
So that you know what you are agreeing to before you agree to it.
No charge. By the end of it he will name the two or three places he thinks the parts and service margin is leaking, or tell you plainly that he is not the right person.
A focused review of the sales, aftersales or service position, working from your own numbers, with findings written up.
Objectives, KPIs and a timeline, sized to what the business can absorb rather than to a template.
Hands-on support while the plan is put in place, including training, distributor visits and performance reviews.
Stage 01 costs nothing, commits you to nothing, and lasts 30 minutes
Enquiries go straight to Graham, not to an account manager. If it is not something he can help with, he will say so on the first call.
Mon to Fri · Graham replies within one working day
Our expertise supports manufacturers & suppliers, OEMs, distributors and service providers looking to enhance profitability and customer satisfaction. We help organisations strengthen commercial performance, refine service operations and improve dealer network effectiveness.
Winning the order. Sales plans, forecasts, pricing frameworks and the KPIs that show whether any of it is working.
Getting product to market through people you do not employ. Recruitment, onboarding, development plans, expansion.
Keeping the installed base running. Process, engineer deployment, technical support, multi-site planning.
The revenue the installed base returns, which funds the next order and closes the loop.
Each area feeds the next. A weak link anywhere shows up as lost margin somewhere else
Drawing on decades of success selling across the UK, Europe, North America, the Middle East and Africa, we aim to help clients:
With an extensive background in parts and service product sales, we provide consultancy in:
Having managed large service centres and field service teams, Combustion Consulting can help develop and support:
Experience in training, supporting and motivating distributors worldwide allow us to offer:
We actively welcome new partnerships. If you're expanding your product range in the UK, or you're a manufacturer not yet represented here, we can act as your local point of contact - managing relationships and ensuring your products are effectively represented.
We also offer guidance and support for, and are eager to undertake industry associated project work.
Being clear about the edges of the work saves everyone a wasted call.
Expanding a product range here, or not yet represented at all.
Managing the relationships, and answering the phone in the same time zone as your customers.
By someone who has sold engines into this market since the 1970s.
Also available for industry associated project work
A short call will establish it. No charge, no obligation.
Combustion Consulting is taking on its first engagements. Graham Dunn has been doing this work since 1975, in the roles below, for three engine manufacturers and the UK’s sole importer of two more. The experience on this page was built in those roles rather than as a consultant, and it is set out that way on purpose.
Client results will be published here as engagements complete.
Apprentice of the Year 1975, then the drawing office, then Area Sales Manager across East Anglia, London, the south east and northern Europe.
Export Sales Manager for the Middle East, Product Manager launching a new welding set range, then OEM Sales Manager for North America, northern Europe and Scandinavia.
Parts division sales and marketing, then Manager of the Southern Service Centre with 14 reporting and the profit and loss account, then Sales Manager for Aftersales.
Area Sales Manager. John Deere and Yanmar industrial diesels, Toyota gas and Kawasaki petrol engines, to OEMs and through distributors.
Four employers, three engine manufacturers and an importer, in one industry throughout
Apprentice to Area Sales Manager at one company, then thirteen years running parts, service and aftersales at Deutz. Employers are named, their customers are not.
West Midlands, London, central and southern England. Barrus is the sole UK importer of John Deere and Yanmar industrial diesels, Toyota gas engines and Loncin petrol engines, and the main UK distributor of Kawasaki petrol engines.
Engine sales to industrial, construction and marine OEMs. Engine and parts sales through a distributor network. Sales plans, forecasting, sales monitoring and profit achievement.
Sales Manager, Aftersales, 2001 to 2003. Three sales engineers reporting. Service, parts and exchange engine sales, sales and budget plans, profit achievement.
Manager, Southern Service Centre, 1996 to 2001. Fourteen people reporting: three sales and service administrators, three workshop engineers and eight area service engineers. Recruitment, management and deployment of engineers, warranty, budgets, and the profit and loss account.
Sales & Marketing Manager, Parts Division, 1990 to 1996. Eight people reporting. Industrial, construction and marine markets, through a network of distributors, stockists and service centres.
Stated achievements in that division: established a marketing and sales strategy, established a co-ordinated parts and service centre operation, increased market share, and improved sales volume and revenue.
OEM Sales Manager, 1988 to 1990. North America, northern Europe and Scandinavia. Presenting and negotiating a new engine range, training and motivating distributors.
Product Manager, 1986 to 1988. Development and introduction of a new range of welding sets, from product marketing through to sales plans and forecasting.
Export Sales Manager, 1985 to 1988. Middle East, engines and parts. Distributor management, training and product support, market pricing and profit achievement.
Area Sales Manager, 1984 to 1985, southern England and northern Europe. 1979 to 1984, East Anglia, London and the south east. Engine sales to industrial, construction and marine OEMs, plus distributor management, training and product support.
Assistant to the European Sales Manager, 1978 to 1979. Draughtsman, 1975 to 1978, on componentry and jig and fixture design for manufacture.
Before any of it, a five year indentured technical engineering apprenticeship at Petter Diesels, and Apprentice of the Year in 1975. Fifty years on, still in the same industry.
Three engine manufacturers and one of the UK’s larger importers, all in industrial power
These are the measures each service area moves. If you already track them, we start from your figures. If you do not, establishing them is the first piece of work.
Several of these are figures most manufacturers cannot produce on request. That is usually where the money is.
Two days on site, with the sales, parts and service managers interviewed separately, working from your own figures. It stands on its own: a written report you can act on whether or not we ever work together again.
Combustion Consulting is new, and a new consultancy has one thing to prove. So a limited number of first reviews run at a reduced rate, and in return we ask permission to publish the result here, named or anonymised as you prefer. Ask about the terms and we will set them out plainly.
What you get
Anything beyond the review is quoted separately, and is entirely optional.
Graham will tell you on the first call whether your problem is one he has solved before.
Led by seasoned Sales, Aftersales and Service professionals with more than 40 years of hands-on experience, Combustion Consulting is focused on helping manufacturers, OEMs, distributors and service organisations strengthen their commercial performance and deliver customer value.
A sales, aftersales and service manager with a proven track record in the diesel engine sales and parts and service market, building and establishing successful sales and service teams.
At Combustion Consulting, we believe in clear insight, actionable planning and delivering measurable results - not theory.
Working from your sales, parts and service figures rather than from an opinion about them.
A plan with owners and dates that the business can actually absorb.
Movement in the numbers you already report on, not a document.
The branch marked theory is drawn because it is the one that never gets taken
Sales, service and parts teams led in all six
Kept deliberately short here. The scope of each role sits on the track record page.
Enquiries reach Graham directly.
Tell us what is not working. Graham reads every enquiry himself and will tell you plainly whether it is something he can help with.
No account manager, no handover, no call centre
If it is not something he can help with, he will tell you on the first reply
