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Since I bought my monster last year there have been some oil leaks and they're driving me crazy, so I'm gonna be tearing thigns down a bit to re seal, clean, polish, etc.

What are some good engine mods since I'm gonna be down to the nitty gritty anyway, or at least a lot of it???
 

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big bore, hi-comps, supercharger, nitrous. >:D ;D
 

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How deep are you going? If you are splitting the crankcase, send the crank, rods, pistons, rings, clips, etc out for balancing.
 

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derby said:
big bore, hi-comps, supercharger, nitrous. >:D ;D
Nitrous? How Squidly... ;D


Mark1305 said:
How deep are you going? If you are splitting the crankcase, send the crank, rods, pistons, rings, clips, etc out for balancing.
Can you summarize the benefits that balancing these parts will yield (other than, maybe, less vibration)? I'm very curious and interested...did you do these for your track bike?
 

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+1 on balancing
less vibration, lower chance of failure at high (or over) rev limit. You reduce dynamic forces in the engine.

Blueprinting
Flow the ports
Lighter flywheel

(or fit a second hand 900 engine that you do all these things to and ride your leaky 750 in the meantime)
 

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What opweirde said. If I had balanced the crank assembly on the Monster before putting over 2500 track miles on it, there is a really good chance it wouldn't have hammered the rod bearing into a piece of ugly jewelry.

The track bike will eventually be getting the crank balanced. It's somewhere on the list right after property taxes, Christmas shopping, and hospital bills from a couple of weeks ago :eek: But it will get one balanced. Hopefully in conjunction with some new (read bigger) pistons [thumbsup]
 

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opwierde said:
+1 on balancing
less vibration, lower chance of failure at high (or over) rev limit. You reduce dynamic forces in the engine.

Blueprinting - is this mostly for longevity?
Flow the ports - nice hp gains, but pricey, no?
Lighter flywheel - have read mixed reviews here
Can you elaborate, please?


Mark1305 said:
What opweirde said. If I had balanced the crank assembly on the Monster before putting over 2500 track miles on it, there is a really good chance it wouldn't have hammered the rod bearing into a piece of ugly jewelry.

The track bike will eventually be getting the crank balanced. It's somewhere on the list right after property taxes, Christmas shopping, and hospital bills from a couple of weeks ago :eek: But it will get one balanced. Hopefully in conjunction with some new (read bigger) pistons [thumbsup]
Yeah, taxes and bills *uck...hoope the hospital stay came out OK

What's a cost (range) to do these things (assuming they're already out of the engine)?

Thanks,

Gene
 
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I am doing the same thing. I have the dreaded base gasket leak on my 750 (notorious for them). While I am getting into the "nitty gritty" I am doing a overbore with high-comps and 900cam and valves with port work on the heads. I got the overbore kit yesterday from Chris Kelly ([thumbsup] to Chris, he is super man and pawns chuck norris) and the heads with all the work is coming from Stuart from FlightCycle later this week.

Contact these guys, they are the shiznit-

I know that I could have gotten more power for less by putting in a different motor or selling/buying a new bike but I am looking forward to doing the assembly myself. This project is more about "The path traveled than the destination reached" sort of thing-
 

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opwierde said:
+1 on balancing
less vibration, lower chance of failure at high (or over) rev limit. You reduce dynamic forces in the engine.

Blueprinting - is this mostly for longevity?
Flow the ports - nice hp gains, but pricey, no?
Lighter flywheel - have read mixed reviews here
Blueprinting will bring reliability and the designed performance. Actual engines give more or less power depending on how the tolerances happened to come out.
Flowing and FI or carb tuning will give more HP. No, it isn't cheap.
I still haven't ridden my lighter flywheel yet so I won't comment.
 

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For prices, check sites like www.foxperformanceengines.com

Ben Fox is one of the more popular Ducati crank specialists. Falicon also does Ducatis, although they don't list it on their site. I called them for prices, but don't remember the numbers now.

On the subject of lighter flywheels, I had never thought too seriously about getting one. My SS track bike already had a Nichols flywheel installed, and after riding it at a couple of events I'm sold. Even though it is in a different bike, I can tell the difference in gyro effect when flicking through tight chicanes. Matching revs for downshifts is effortless. The motor revs up or down instantly. Even without matching revs on downshifts, there is no wheel hop. It still idles down to about 1200 rpm without complaint.

When the next iteration of the motor goes together in a few weeks, it will also sport an aluminum clutch basket and frictions. Be interesting to see how it idles and behaves then.
 

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i've just done a 4 valve rebuild and i fitted carrillos and hi comp pistons, doing this, along with the previous addition of a seriously light flywheel made balancing necessary. with nearly 200 grams off the rod and piston assembly for each barrel (compared to stock) nearly 500 grams was taken from the crank. i fitted bigger valves and port matched the heads and flowed them on the intake side. careful reassembly ensured the squish was set at .95mm and i can say that to date, it is a very sweet thing to ride. i havn't had the PCIII set up yet as it's still being run in but even on the old FI settings it feels faster everywhere and spins up very quickly. the downside to lightening everything is the comparative loss of engine braking, and i say comparative because as it's a twin it still has more engine braking than a 4 cylinder bike. the vibration that i noticed when i fitted the light flywheel is now gone too, so i'm a fan of going to the trouble of balancing.
 
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