Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 Redhot exhaust!

Just been out for a run in the M3W, after fitting the G56 Stage One kit. It was quite a long and fiddly job of around 7 hours, especially single handed, trying to undo and do up nuts and bolts either side of a bulkhead, etc. Also due to severe spinal arthritis, I have to stop every half hour for a good five minutes to let everything unwind.

You have to strip out most of the interior, seats and panelling, to get at the nuts holding the original exhaust brackets, to replace them with the new stainless steel ones. The silencer is noticeably larger in diameter in order to do the silencing by absorption rather than by baffling and restriction. The ECU is also quite tricky to change in its position underneath all the electrics and you have to access from under the dashboard. The air intake is a 5 minute job. I did have a set of long shaft T handle Beta hex drivers, without which some of the jobs would have been even trickier.

Was it all worth it? The first thing you notice is the sound is completely different. It is much deeper and now actually sounds like a Vee Twin from the driving seat. There is a BIG step in performance. I would guess the mid range torque is up by around 30%. The engine now revs very freely and the pinking has gone completely. I did not realise quite how much it was pinking until it stopped. The car now feels quite seriously quick and you now have to be a bit more careful not to unstick the back end on slower corners. Very definitely worthwhile and I would recommend it for any M3W without hesitation.

Bad points - only one really and a typical bit of British cheeseparing. G56 do not give you a set of 4 replacement rubber/metal bobbins for the exhaust mounts. You are supposed to re-use the originals. I had replaced my 4 manky originals a few weeks ago with just two larger bobbins (30mm x 30mm M8). Luckily I had two extra 30 x 30 bobbins in stock. In France rubber/metal bobbins are rarer than dents de poulet and you can't just go down to your local Halfords and buy them. As G56 knew this kit was coming out to France, at over £2,000, you would have thought they could have included them.

Good to hear that you are pleased with your G56 Stage One kit, particularly after my recommendation. Not cheap but worth the money. You will find the engine is much more responsive and tractable at lower revs now. I know some say it's a no,no but it will pull without hesitation from 2200 rpm in top. Surprised you find it difficult to get the exhaust bobbins in France. Try Renault p/n 7700565762 if you get stuck again, there must be plenty of them?

Congratulations Wilson and I too am thrilled to hear that you're pleased with the performance results, as I know I tried to encourage you as well. Having put a few more miles on my G56 ECU I am certain that this has improved smoothness in the low-medium rev range and the car now pulls cleanly on a 'managed' throttle at 2000rpm - much better than before.

Interior strip-out is time-consuming first time round, but gets much quicker thereafter, should the need arise. I too had the fat bobbins in stock so could deploy those with the install of the new, deeper brackets, but I can see your point that not everyone will necessarily have them on the shelf. Having said that, should anyone else order the G56 kit from the guys, it would be worth having the bobbins conversation and see if they are able to supple the appropriate items with the kit. It would certainly take out some of the install process variance.

For what it's worth, my car is now more economic on a cruise than it used to be, so stuffed-up were the stock exhausts. So a Win-Win all round I'd say

Thanks all. I never fail to be amazed how unhelpful the storesmen are in French garages a bit like UK storesmen used to be a few years ago (I am sure most of us remember the type, in a long brown coat with the dog end of a roll up stuck to his lower lip and a greasy flat hat). I trolled through online parts books to try and find part numbers for the bobbins for Citroen and Renault. I am fairly fluent in French, having spent a year at university in Switzerland but got completely blanked in both Citroen and Renault garages. They said they needed to know the VIN number of the car, in spite of my explaining that this would be no use whatsoever. I have ordered four of these http://www.carbuildersolutions.com/uk/cotton-reel-rubber-mount-42mm-x-27mm.

My brother has just put a G56 Stage One kit on order for his Mk.2

Wilson

In my experience that type wont last much longer than the stock ones.
I have had these fitted for over two years now , and are as good as new
http://www.ebay.co.uk/itm/281280225096?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Do the latest cars have still have the original type of bobbins ?

No, they have the bigger Hex-shaped bobbins of the design to which Wilson linked. I suspect the bobbins on G56'd cars will last much longer than cars with MMC pipes, as they run the second flexi-joint before the silencer, which in my experience removes much of the high stress vibration that undoubtedly causes premature mounting failures (aluminium body-mount side included).

Thanks R1NGA .

I am currently using 4 30mm x 30mm cylindrical bobbins with the G56 exhaust, because that is all I had in my bits and pieces cupboard. They seem to be transmitting a lot of vibration to the bodywork. G56 said they had found the same and gone back to the hexagonal waisted type. With two flexy sections in the G56 systems, the loading on these bobbins should be much less than in the original Morgan single flexy section exhausts.

Wilson