Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 569 cams

The G56 runs fine although a wee bit rich on cold start in my machine but on the road it runs fine.

Did you have it tuned after you got it or did G56 put the tune in?

G56 puts a tune in it and if you are good at figuring out reading the software you should be able to tweak the tune yourself. I am not that guy, but the tune does start and run the machine with lots of power available.

You can mount it where they suggest but also it fits flat on top of the footwell under the bonnet or on the firewall and if you put it there then there is easy access to the ports and switch. Just a personal preference.

I have them in my three wheeler. It is so much fun to drive with more power. Rear tire consumption will go up a bit aswell. I have an unlocked ECU. You can download the Portune2 software for free from S&S. It isnt very difficult to figure out. It has a learning feature that will make changes to the fuel and timing maps. After you drive it for a while you can use the protune software to merge this correction maps with the tune so that it is saved and wont delete if you loose battery power. My next add on is to replace the Centa bushings again and then bolt on the 58mm throtle body that just arrived from Vital V Twin. Word of caution. When choosing cams, the 569 cams are non-interfearence. This means that WHEN! your cam belt breaks. you probably wont need to replace the motor. The 618 cams are interfearance cams. WHEN! your cam belt breaks you will hit the valves with the pistons. This will probably signal the end of that motor in its entirity. Choose wisely. Dont forget to open up your exhaust and let it breathe. I did the magnaflow exhaust build you can find with a search of this forum. It is Loud! which I like. Safety Fast

Here is the sound and performance of the G56 ECU on a short drive yesterday.



You can hear all the rattles I have had since day one of ownership of the new Morgan. Pretty ominous sounds from the transmission or clutch or throwout bearing if you ask me. The rattle on take off and the buzzing at lower rpms is when you hear it, otherwise it is the BB making its ever present whine.

I probably seem like a grunge which I don't mean to be I'm just genuinely curious as to improvement/benefit versus cost. Stephen: its difficult to know but your performance and sound appears to be the same as mine with standard cams and drilled out baffles + Emil's fuel and oil vent systems. As you know I live at high altitude (8650ft 2636m) where the air is thin, warm 88F today and cold in winter the roads steep and very twisty. Never had an issue with performance and pulling power in fact anymore would probably be considerably dangerous on the ravine bends and out of control bicyclists. I can understand doing the cam and ECU mods for being on the track but normal road use? I should add I am a former hill climb racer in my 4/4 so used to speed/performance, I'll be quiet now and await the incoming.

Bruce, the point of the video was to show how normal the car sounds. If you are happy with how smooth your machine runs then the cams are of no consequence to you. I installed the cams just to see how much of a difference they made in smooth application of power and overall driveability; they helped IMO.

Since I installed them I have the skill to remove them if I think they are not worth it. So far they are staying, along with the roller rockers.

The biggest drawback to them that I have noticed, besides a decrease in fuel mileage, is the ease at which high rpm's are reached. It revs very freely and forces me to pay closer attention to the tach since my ears have not gotten full adjusted to the engine sound yet. With the stock cams you could tell the engine did not want to exceed a certain rpm freely and you had to push it to go higher, now a rev limiter set might be a good thing.

No, not a grunge, just someone who is enthusiastic about his MOG and what it does :-)

My car has a similar set up to yours Stephen, G56 exhaust and filter, 569 cams with roller rockers. I must admit the 569 cams and rockers were certainly not essential but, to my mind at least, they do make for a smoother power delivery and a bit more "go" through the rev range if you want it. The economy hasn't been reduced by much if any, if you drive it modestly. Not sure about the Emerald ECU that you are using but the S&S one does have a rev limiter function, usually set for a soft cut at 5500rpm as standard I think but that can be reset to 5700 soft cut and 5800 hard cut to get the full safe limits.

Stephen,
Do you have the G56 exhaust on your three wheeler

I've got the 569 cams, G56 exhausts and the Emerald ECU. The map that came with the ECU was dreadfully rich but after installing wideband lambda sensors to give a live read out of the mixture and some judicious re-mapping I've got a very lively, smooth running motor with similar fuel consumption to standard. Ideally I want to get on a rolling road with the maps for the left and right cylinders separated as there is a somewhat complex imbalance between the cylinders but for the moment I have what appears to be a safe map with good performance and not so rich that bore washing is an issue. Saying that, the bore washing that went on till I realised that I really had to do something about it seems to have sorted out the blow by that was spitting loads of oil mist out into the catch tank so silver linings and all that...
I am still looking for a rolling road within reasonable range of home that will work with the M3W, no luck so far.