Big Bore Engine Transplant to Old Monsters

[koko64]

Thinking about the future (five years time/60,000 kms/40,000 ms). My '95 900 Monster fits me like a glove.

While 1000/1100 engines are expensive and in short supply at present, I am considering an engine transplant rather than a rebuild when the time comes. Future cost will determine which way I go.

The mods would be modest, porting, DP cams, split 41 FCRs, Ignitech module and a mild compression increase via playing with gaskets rather than changing pistons. A very skilled friend of mine would do the work. I'm not greedy, I would settle for an even 100hp.

Which 1000/1100 motors would fit?

[avizpls]

to settle for at least 100hp, you'll need to be less modest I think.

[Raux]

if you are doing all that to the 1000/1100

doing that and an overbore kit would be less expensive i think and give you similar results with your motor.

[ScottRNelson]

You'll want to check that the ignition pickup and alternator wiring is the same, or at least reasonably compatible, between the newer fuel injected engines and your old carbureted engine.  I doubt you can get enough of a compression increase by just fiddling with base gaskets.  I would assume you would need new pistons to get 10:1 or 11:1 and a reasonably shaped combustion chamber.  Finally, do FCR carburetors somehow give more power than fuel injection that is properly mapped?

I was going to include a link to the California Cycleworks web site with the special heads and stuff that produced 103 hp from a 966cc engine, but I couldn't find it.

[Raux]

http://www.ca-cycleworks.com/shop/heads/heads.html

[1KDS]

Which 1000/1100 motors would fit?

As far as the actual motor bolting into your frame you need to stick to monster and ss motors, the cases are narrower on the multi and hyper

[Düb Lüv]

check out this guy. he has a carb'd 1000ds MH.

http://www.ducati.ms/forums/showthread.php?t=54249

[koko64]

Thanks 1KDS. Does that include 1100 SSS Monsters?
Thanks Raux. Yeah, I've seen the MBP site   and would consider getting the 900's heads reconfigured. But I would do it locally because of cost. The price of MBP doing it would make me consider buying a wrecked DS bike and transplanting the engine.
Thanks DL.

It's major head surgery alright. Updating the old motor includes changing the included valve angle, bigger valves, raised ports and the option of bigger cams. Welding and remachining and starting over are involved. I would use JE 944/Mahle 966 pistons and big valves that Chris Kelly stocks. It's basically updating the head design. It's no wonder Chris reckons it's better to start with a DS engine as the factory has done the basic update. The problem with the old heads is the ports and lack of valve area. Apparently, the stock inlet port is pretty bad.

Thanks Scott. Regarding how much difference split FCRs and an Ignitech module improve a DS1000/1100 engine. Some excellent results have been reported by Chris. You can run the Ignitech ignition on a DS engine fitted with carbs, apparently. The option looks promising.

I have a friend who is capable of doing the head update and would consider it as part of a total rebuild when the day arrives. I would tune and test it on Brad Black's dyno (when he gets around to setting it up ). However, if DS motors become as affordable here as they are in the States then it means lovers of the old Monster have an engine upgrade option.

I'm really looking forward to seeing what Travman's bike does on the dyno. He's showing the way.

[Düb Lüv]

i'd love to buy the Ignitech, but quite frankly, i'm scared of it. with the cost of dynoing, i worried about not every getting it running. messing up the ignition tables, not having it set up right.

it my ICU go out, i'd probably buy one though. beside i bought a cheap netbook about a year ago cause i wanted to toy with megasquirt.

[Travman]

Which 1000/1100 motors would fit?

Monster and SS engines have been mentioned, but don't forget about Sport Classics.  The 1000 DS in the GTs and Sport Classic 1000 Bipostos have a wet clutch which could be interesting. 

Does anybody know if the 1100 out of the new generation Monsters will fit in the classic generation frames?

I'm really looking forward to seeing what Travman's bike does on the dyno. He's showing the way.

It will be a few more weeks or months.  I'm not sure.  The bottom end should be going back together soon.  After the engine is back together, I'll still need some time to put some miles on the motor.  Then we will dyno and tune it further.  It will happen sometime this year.

[1KDS]

Thanks 1KDS. Does that include 1100 SSS Monsters?

As far as I know

Monster and SS engines have been mentioned, but don't forget about Sport Classics.

Great point, I overlooked those.  Like you said you could have a choice between wet and dry clutch depending on which model/year motor you bought.

[koko64]

Thanks guys.
Cheers.

[greenmonster]

I think you need bigger exhaust pipes f 100 Hp.

i'd love to buy the Ignitech, but quite frankly, i'm scared of it.

There is absolutely nothing to be afraid of!
It works very well w the default map and are probably the easiest engine mod you can do.

[koko64]

Thanks GM
I think Staintune make 45mm for the early Monster. They are very highly polished and look well made.
I thought the MS4 had the 40mm headers?