Hi Peter

Well, 3 months and over 3,000 miles have passed since you fitted the Econotune head to my MGB.

To recap the original situation, I could get about 27.5mpg using standard unleaded plus Valvemaster+ or about 29.5mpg with "super unleaded" and Valvemaster+.

With the new head, things started off OK but steadily deteriorated until, when I used a tankful at only 25mpg I thought I would have to do something about it. Somehow, the ignition timing had gone awry ... I was able to advance it by about 6 degrees before the tendency to pink appeared. Since that time I have covered 1,800+ miles at an average of 30mpg. A few days trundling to (and around) Norfolk gave me 32mpg. I think this is as good as I am going to get. I must admit I was hoping for a bit more but never mind.

As a driving machine, the car has been fine with the new head. Whatever increase in power there was with the new head, it just seems "normal" now. In any case, I rarely put my foot right to the floor.

Following your comments on the (lack of) accuracy of my speedo on the rolling road, I bought a SatNav and, as you did, found that 30mph on my speedo was really about 33mph.

All the best Peter.

Regards
Geoff Everitt
Hi Peter,

Just been on your web site and am dropping a line about fuel consumption

Car Details
MGB GT 1966
1860cc, Fast road head, HR270 cam. whole engine built by yourself. two years ago.
94HP on your rolling road after 600 miles post rebuild.

General fuel consumption appeard to be 29mpg.
A Good thrash over 50 miles on country roads gives 25mpg, I've tried this a couple of times on the same road only occasionally getting into 4th gear and have got the same results.

Last year travelled to France two people car loaded, covered 1000 miles and got 34mpg. This does include a steady return journey due to a knackered gearbox.

In general the car runs like a dream, especially once it has warmed up when it comes alive when I catch it right. It's very easy to drive smooth at tickover and pulls well from low revs. The 270 cam was the right choice for me, I think. For an MG engine it's quite civilized at high revs, still noisey but dosn't feel as if it's about to break something expensive or run out of puff. Quite happy at 5500rpm.

All in all smooth likes to rev good grunt and lots of useable power with good fuel economy. top motor.

I have recently fitted a stronger primary advance spring to stop it pinking at low revs under load wit good results, time will tell what this has done to the performance of fuel consumption.

Must sort out a rolling road session in the near future to see what it's power curve is like now it's got some miles on it.

Chris Holden

Denmark June 19 2008
Hi Peter

Hope you are doing well! Here is some feedback based on the first 1200 kilometres with the MGB engine you build for me at the turn of the year 2007/08.

Having owned my 1974 MGB GT for 1 year I started to look for a powerful replacement engine. After reading your books on powertuning MGB's and cylinder heads I decided to give you a call - not least because you describe yourself as running a friendly tuning firm. And that is indeed what you do! After some talking we agreed up on a fairly fast road engine, which still should be driveable in town-traffic:
1867 cc linered block, 10.25:1 CR with HR285 Piper billet cam.
Fast Road Big Valve Plus head with 45mm inlet valve, larger ports with tubed pushrod tubes on the inlet ports. Heavy duty double valve springs.
Heavy Duty/Competition clutch.
Lightened flywheel.
Modified oil pump.
123 dizzy
2 * 1-3/4 SU carbs with KN pan cake filters and stub stacks
Maniflow LCB Large Bore Hi-Flow single box exhaust system

Helped by Peter Mogensen (a Danish MG part supplier) and Poul Heichendorff (a true Danish tuning legend who has actually worked at Abingdon and who had only positive feedback on the engine) - the engine was installed, run in and adjusted, ready to use for summer 2008.

My first driving impressions are:
Sound It has a tremendous sound from idle and all the way up, and is definitely not discrete…Full throttle between 2500 and 3500 produces a nice and deep thunder.
Power Has not been an a rolling road yet, but it feels very strong and pulls heavily from 2500 and revs easily to +6500
Torque There is no lack of torque compared to the standard engine
Flexibility It seems very flexible and takes revs immediately! It is absolutely tractable.
Vibrations There is a total absence of vibrations. The engine is very well balanced
Consumption It looks as if it runs close to 10 kilometers per litre (99 octane lead free plus Bardahl octane booster) - but time will show

Until now I am absolutely satisfied with the engine and I will come back with more feedback as I gain more experience with the engine

Best regards

Klaus Ahm

Peter,

I meant to send you this email months ago!!

Last year, you agreed to have a look at my MGB GT as I couldn’t get it to run properly.

It turned out to be a combination of a stuck jet on the rear carb & a blocked fuel feed to the front carb.

The MG has been fine ever since.. just waiting for the weather to get better now J

At the time, I think I said that I’d write this up on my webpage, so here it is….
http://www.tapsell-towers.co.uk/html/mg.html

Feel free, to either link to this or copy any of the text for your website.

Again.. belated thanks from a very happy MG owner.

Regards,

Chris Tapsell

Feedback
Page
Welcome to our feedback page
Hi Peter,

How are you? As requested on your website, here's a bit of feedback on the Econotune cylinder head fitted to our 1973 MGB GT back in May 2006. Since the head was fitted, we've covered just over 6,000 miles in the car, including trips to Norway (where we met and became friends with Peter Docton) and Ireland. The engine was great for climbing mountains in Norway (and this was just a few weeks after it was fitted) ~ I was having to change up and down the gearbox between 2nd and 3rd between hairpin bends even when the gradient was 1 in 5 as the engine was pulling so well. Fuel consumption has improved from 27mpg on the original (standard) head to 33mpg since the head was changed. So all in all, I'm exceeding pleased with the cylinder head as the car is now more responsive and drinks less petrol!

Thanks ever so much for a great product and next time we're coming past we'll pop in and say hello.

Regards,

Nigel & Jo

Nigel and Jo May
Burnham on Sea
Somerset
These pictures show Klaus' Car and engine
Peter,
Good morning - an e-mail to say many thanks for sorting out the mis-fire on the "B" - I am pleased to say that she now cruises at 80mph without missing a beat. Surprising what a 0.5mm diameter bit of rubber can do! Once again many thanks.
As requested by your web-page I would also like to say how delighted I am with the Econotune head and HR270 cam that you fitted for me. At the last fill-up the car had completed 4440 miles, a mixture of town and motorway driving - where I don't hang around! - at an average of 33.6mpg running on standard unleaded petrol. This is a 20% improvement on the 28mpg I used to achieve with the standard head and cam. The car is more tractable with more torque and picks up and accelerates far more smoothly. As we found recently, I now also have 102bhp at the rear wheels. Excellent all round improvement in performance with which I couldn't be more pleased.
All the best,
Gene Mathers
Dear Peter and team
I hope this email finds you all well.
I thought I better write something for your feedback page!
You converted my rubber bumper mgb cylinder head back in August 2008.
Before then I had to use fuel additive which was a minor irritation
especially when you ran out of the stuff!! Before the conversion to an
econotune head the car was asthmatic, to say the least, especially
because the carburetors were so poorly adjusted! This was fixed by you
when I brought the car down to your workshop! As advised by you I
replaced the original butterfly valves which had overrun valves fitted
with a blank pair I had in the back of my garage. I use the car as my
everyday transport to and from school which is a 50 mile round trip.
It starts with little choke and none of the spluttering down the road
before it has warmed up! On my daily commute it returns 35 mpg and on
a recent longer journey of mixed roads, motorways and back roads, I
recorded 42 mpg and I wasn't hanging around! The car pulls cleanly and
is much more tractable. Uphill the car requires less gear changes and
generally feels more powerful. So as well as being good for the
environment it has probably paid for itself already!
I hope this is suitable for your feedback page.
Best wishes
Bob Walker May 2009
“Henrietta” BWP 833 H

She was built on the 23rd and 24th February 1970, leaving the factory on the 6th March.
She was registered BWP 833 H in Worcestershire on the 8th April 1970.
I purchased her on the 5th May 1990 for £2,000.00, ran her with minor repairs until the November of that year.
She then went to Chris Raw of “Classic Repairs” in Huddersfield, where she had a complete rebuild, the body had all the mechanical bits removed, the shell was sand blasted, all the rusty bits removed, these included; bonnet, half cills, front and rear wings; new panels were installed and the shell resprayed.
Roger Pearson Motor Services, a garage nearby, carried out a complete rebuild of engine, gearbox, back axle and suspension.
While this was going on I took the bumpers and overrides to W C Howells in Walsall for re-chroming.
A new hood and “Minilite” wheels completed the transformation, the car being returned to me on 28th February 1991 all for princely sum of £5,195.00.
Roger and Chris carried on looking after the car until 1995.
Stewart Grainger of “Mong Designs” of Fazeley, Tamworth, who I met at the “Midget & Sprite Club”, then looked after her.
He re-built the engine in June 1998, increasing the size to 1398cc, installed a “Servo” on the brakes and lowered the suspension.
From August 1998 Beacon Street Garage in Lichfield started to carry out all of the mechanical repairs, including fitting new front suspension and a “Ford Sierra” 5 speed close ratio gear box, body repairs and new hood after the car was vandalised.
Chris Raw now at “Manor Autosport” Huddersfield rebuilt the engine as a 1275cc unit in January 2000, after the previous engine “blew up” on Boxing Day 1999.
The new engine had a “Peter Burgess” big valve unleaded head, one of his camshafts and produces about 90bhp, pulls from 1500 to 6500rpm and has loads of torque.
During 2008 it became obvious that the engine had come to the end of its life, when it used 3 pints of oil to go 300 miles.
I had been going to see Peter for a number of years prior to going to Le Mans in her for a fine tune on the rolling road.
Peter agreed to re-build the engine for me, I specified that the new engine was to have loads of torque, to be able to accelerate in 4th gear from 1500rpm and not rev too highly as my wife Helen does not like the noise, never goes beyond 4000rpm and is used to driving a diesel car.
So Beacon Street Garage removed the engine, while Peter was rebuilding it they stripped the bodywork back to bare metal, replaced various panels and gave her a re-spray.
In the mean time Peter went about a complete re-build of the engine, pistons were thrown away, crank and bore re-bored, all the moving bits balanced, new starter ring, oil pump, water pump, sump and other bits and pieces known only to Peter and his workers.
I bought a chrome plated rocker cover from David Manners and was delighted when I picked up a shiny red engine early this year.
Beacon Street installed the engine; at the same time they replaced the rear springs.
I ran in the engine how Peter told me, especially enjoying a “Thrash” through the Welsh mountains on Good Friday.
With Le Mans being only a few weeks away I booked her in for a “Rolling Road”
I was concerned as she was using quite a bit of oil and smoking, however once Peter had set her up, including changing the carburettor needles from standard to “Cooper S” the oil stopped.
The result of the tuning is an engine that produces 100bhp at 5,250 rpm, pulls from 1500 rpm and also produces 53 bhp at 3000 rpm.The engine thinks it’s a lot bigger than it is, has more “grunt” and is tractable; I am really looking forwards to cruising down the French roads at 3500rpm in top, doing over 70mph.

Touring

Henrietta has been used not only for “posing” having been on the “Midget and Sprite Club” stand at the Classic Car Show at the NEC, and “Cars in the Park”, she also takes me to my Marshall duties at Motor Racing Circuits, and track laying on the Welsh Highland Railway. She is also used for my work and in the past has been used for Helen to go to University and for her work.We have been on touring holidays to Wales, in the snow with the roof down at –4 degrees celcius.
The Lake District camping, Ireland, where it rained a lot, and the car filled with water, out for a pre dinner drink on a frosty Christmas day with the roof down.
France, both camping and in hotels on numerous occasions, where just about everything has either fallen off the car, or stopped working, but she has always brought us home safely.
Henrietta has taken me to Le Mans for the 24-Hour race every year since 1991, for the last 2 years we travelled down to the Dordogne, between qualifying and the race week, travelling over 2000 miles in 2 weeks.
Finally I would like to thank Helen for “living the dream” with me, and for all my friends and garage staff who keep her on the road,
The “Midget & Sprite Club” and “MG Owners club for advice.
Peter Burgess for his friendship and cups of tea.
Incidentally neither of us would want to be without her for all the hours of pleasure she has given us.
The bears are Mick and his son Silverstone, they go to Le Mans each year with me and have a seat in the grandstand

Michael Glover

Peter thanks again for you doing such an outstanding RR tune-up on my car and at such great value – I thoroughly and highly recommend your RR-tune-up to others

As you know this RR tune-up was the 3rd on the car in nearly 4 years, the first being done by a company local to me and the previous to visiting you was done by a recognised expert in the type of engine in my car – yours was by far the best and most effective with great results

Even from the short and restricted run I was only able to do before leaving you told me the car was much better

I've now been able to fully test the car on a Sporting Bears weekend tour leading the way for three other more powerful, quicker and faster cars on some great south west counties back roads – all were surprised by the way my car went and were pleased with the pace I set making the drive enthusiastic for them too

Even less obvious but very important things like easier starting on choke have improved and the increasingly important mpg is obvious just from the decrease in time it takes for the fuel gauge to move from F to E

Even allowing for the cost of the journey from my home and back and buying my wife drinks and a meal the visit was a fabulous investment which paid immediate returns from the moment I drove the car after your excellent RR tune-up

thank you, Nigel 20th June 2011