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
I meant to send you this email months ago!!
Last year, you agreed to have a look at my MGB GT as I couldnt 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
Id 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
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 its
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
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