mrrpm bigbore kit 1150cc

canamxteam · 01-20-2012, 07:32 PM

Thinking about putting high comp pistons in my commander or mrrpm 800cc to 975cc bigbore kit 100mm piston and cyl on my commander 1000 I think with the longer stroked 1000 91mm piston commander motor with this kit it would make it a 1150cc

elifino · 01-20-2012, 08:03 PM

Why?

joshuabuilt · 01-20-2012, 08:05 PM

haha wish u woulda asked me why just so I can say "elifino" lol

joshuabuilt · 01-20-2012, 08:07 PM

has mrrpm built and tested a motor yet with these mods?
last I seen he had some stuff built but no full motor's

elifino · 01-20-2012, 08:10 PM

In 1987 I put NITROS on a Sea Doo just to get the jump on a junker Sea Doo that wanted to race all the time...He ran 40MPH and after spending a grand I won as long as I had gas... WTF keep it dependable , something that will run hard and finish the day... trust me this is the winning combo...

Xelvic · 01-20-2012, 08:32 PM

MrRpm has talked about not being able to do it with his Commander because of the ECU and throttle body restrictions. Call him and see if anything has changed. I know that if you "were" able to do it, you'd be laying the smack down on just about everything. His Outlanders are crazy fast.

Xelvic · 01-20-2012, 08:36 PM

Here's the thread. Maybe with the new PC5 out this has all changed.

1180cc BBKs are almost here

canamxteam · 01-20-2012, 09:25 PM

Dont know if its tested but if the commander has the same pistons and jugs as the commander it should work i thought brp said they just changed the crank stroke and left the cyl and piston the same as the 800cc to make it a 975cc if thats true it should just be a bolt on kit

USAGUY · 01-20-2012, 10:36 PM

I wouldnt go big bore on the commander. First there is no reason too and second it will not help til the intake is replaced. It is poorly designed and does not allow enough air to the motor after you modify it. The single throttle is not bad but not good either. Replacing the current pistons with 12:1 and doing head work is what this motor needs after the intake is done. This motor is solid but if you have the brp race box or K&T box then the ecu is not your problem. With the PC5 modified intake and mods to the throttle body the motor mods are open. If you know what you are doing it can be even more reliable then stock.

canamxteam · 01-20-2012, 11:18 PM

Was think im going to have the jugs off anyways to replace the pistons for 1000$ more i can have a 1150cc

01-20-2012, 07:32 PM	#1
canamxteam [OP] Senior Member Join Date: Dec 2010 Location: statesville,nc Member #1365 Posts: 456 ()	mrrpm bigbore kit 1150cc Thinking about putting high comp pistons in my commander or mrrpm 800cc to 975cc bigbore kit 100mm piston and cyl on my commander 1000 I think with the longer stroked 1000 91mm piston commander motor with this kit it would make it a 1150cc

01-20-2012, 08:03 PM	#2
elifino Senior Member Join Date: Oct 2011 Location: Albany Kentucky Member #3529 Posts: 109 ()	Why? __________________ *"THROTTLE TRU IT!"*

01-20-2012, 08:05 PM	#3
joshuabuilt Senior Member Join Date: Jul 2011 Location: san diego Member #2811 Posts: 667 ()	haha wish u woulda asked me why just so I can say "elifino" lol __________________ -Its always something and never nothing - 08 dodge 2500 cumming 4x4 -2011 xt commander -04 trx 450r "for sale"

01-20-2012, 08:07 PM	#4
joshuabuilt Senior Member Join Date: Jul 2011 Location: san diego Member #2811 Posts: 667 ()	has mrrpm built and tested a motor yet with these mods? last I seen he had some stuff built but no full motor's __________________ -Its always something and never nothing - 08 dodge 2500 cumming 4x4 -2011 xt commander -04 trx 450r "for sale"

01-20-2012, 08:10 PM	#5
elifino Senior Member Join Date: Oct 2011 Location: Albany Kentucky Member #3529 Posts: 109 ()	In 1987 I put NITROS on a Sea Doo just to get the jump on a junker Sea Doo that wanted to race all the time...He ran 40MPH and after spending a grand I won as long as I had gas... WTF keep it dependable , something that will run hard and finish the day... trust me this is the winning combo... __________________ *"THROTTLE TRU IT!"*

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01-20-2012, 08:32 PM	#6
Xelvic Senior Member Join Date: Jun 2010 Location: Tucson, AZ Member #312 Posts: 2,407 ()	MrRpm has talked about not being able to do it with his Commander because of the ECU and throttle body restrictions. Call him and see if anything has changed. I know that if you "were" able to do it, you'd be laying the smack down on just about everything. His Outlanders are crazy fast. __________________ 2011 Can am Commander 1000X: 2X Motorsports Tie Rods Can am full skid plates Warn XT 4500 winch Street Legal kit (AZ) BRP Black Race Box Auto Meter Gauges MrRpm oil adapter Engine Oil Cooler MadeByMe Roof CvTech Clutch

01-20-2012, 08:36 PM	#7
Xelvic Senior Member Join Date: Jun 2010 Location: Tucson, AZ Member #312 Posts: 2,407 ()	Here's the thread. Maybe with the new PC5 out this has all changed. 1180cc BBKs are almost here __________________ 2011 Can am Commander 1000X: 2X Motorsports Tie Rods Can am full skid plates Warn XT 4500 winch Street Legal kit (AZ) BRP Black Race Box Auto Meter Gauges MrRpm oil adapter Engine Oil Cooler MadeByMe Roof CvTech Clutch

01-20-2012, 09:25 PM	#8
canamxteam [OP] Senior Member Join Date: Dec 2010 Location: statesville,nc Member #1365 Posts: 456 ()	Dont know if its tested but if the commander has the same pistons and jugs as the commander it should work i thought brp said they just changed the crank stroke and left the cyl and piston the same as the 800cc to make it a 975cc if thats true it should just be a bolt on kit

01-20-2012, 10:36 PM	#9
USAGUY Senior Member Join Date: May 2011 Member #2466 Posts: 554 ()	I wouldnt go big bore on the commander. First there is no reason too and second it will not help til the intake is replaced. It is poorly designed and does not allow enough air to the motor after you modify it. The single throttle is not bad but not good either. Replacing the current pistons with 12:1 and doing head work is what this motor needs after the intake is done. This motor is solid but if you have the brp race box or K&T box then the ecu is not your problem. With the PC5 modified intake and mods to the throttle body the motor mods are open. If you know what you are doing it can be even more reliable then stock.

01-20-2012, 11:18 PM	#10
canamxteam [OP] Senior Member Join Date: Dec 2010 Location: statesville,nc Member #1365 Posts: 456 ()	Was think im going to have the jugs off anyways to replace the pistons for 1000$ more i can have a 1150cc

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