250/300 engine tips/advice?

tuscani451 · July 25th, 2015, 09:30 AM

So I did a bunch of searches and I know at least a couple people have put a 300 motor into a 250 (2009). The threads I read though we're a little light on details. Can any share a more in depth how to on removing the old engine and putting the new 300 motor in? I have a complete 300 sitting right next to my 250 so I should all the required parts for a full 300 if swap

EMSRacer07 · July 25th, 2015, 09:53 AM

Quote:

Originally Posted by tuscani451

So I did a bunch of searches and I know at least a couple people have put a 300 motor into a 250 (2009). The threads I read though we're a little light on details. Can any share a more in depth how to on removing the old engine and putting the new 300 motor in? I have a complete 300 sitting right next to my 250 so I should all the required parts for a full 300 if swap

I did my swap to the pregen and really the only thing I needed major was the front motor mount grinded down a bit. The newgen mounts should be a lot closer to the 300 mounts. You probably could swap the newer mounts from the 300 but you need the radiator from the 300 and probably the faring stay if it mounts differently. Hence why I kept the stock pregen mounts and pregen radiator so I wouldnt have to replace the fairing stay. Idk if the 300 motor mounts are similar mounting points for the newgen fairing stay. Would check on that.

Pretty much just take out the whole engine, wiring, ecu and replace it with the 300 stuff. Mounts are the same. I put the engine in first. Then proceeded with the 300 wiring. This will take the most time since you need to figure out how the wiring will go, zip tieing, etc. And finding a spot for the ecu to sit. You might have to cut the lower newgen fairing to fit the header. Also source out a fuel pump and splice that in. I got mine from ecotrons.com for 30 bucks and works perfectly.

Its a straight swap just you need to wire it up and that can take time.

PM me if you need any more specific details.

EMSRacer07 · July 25th, 2015, 09:55 AM

Also I made the 300 gauge cluster fit on my pregen. I would do the same in your case since it would be a big pain to re-pin the newgen cluster to get all the same data from the 300 cluster. 300 cluster looks better anyways and is digital

tuscani451 · July 25th, 2015, 11:14 AM

Quote:

Originally Posted by EMSRacer07

Also I made the 300 gauge cluster fit on my pregen. I would do the same in your case since it would be a big pain to re-pin the newgen cluster to get all the same data from the 300 cluster. 300 cluster looks better anyways and is digital

Awesome I'm sure I will be hitting you up regularly. I also hope to document the job in this thread, I guess I'm just not sure where to start lol

EMSRacer07 · July 25th, 2015, 11:38 AM

Quote:

Originally Posted by tuscani451

Awesome I'm sure I will be hitting you up regularly. I also hope to document the job in this thread, I guess I'm just not sure where to start lol

take the old motor out from both bikes and get ready for the swap. Take my advice and strip the bikes down completely. You will need access to every part of the bike for the wiring and taking the motor out.

Somchai · July 25th, 2015, 05:41 PM

Unlike @EMSRacer07 I would go the different way and start with the cable, wire and hose routing before the engine is mounted.
You can find that all described with the pictures in the Appendix-Sections of the 300 Manual.

July 25th, 2015, 09:30 AM	#1
tuscani451 ninjette.org member Name: leif Location: Gilbert, AZ Join Date: Nov 2013 Motorcycle(s): R6, Kawi 250 Posts: 86	250/300 engine tips/advice? So I did a bunch of searches and I know at least a couple people have put a 300 motor into a 250 (2009). The threads I read though we're a little light on details. Can any share a more in depth how to on removing the old engine and putting the new 300 motor in? I have a complete 300 sitting right next to my 250 so I should all the required parts for a full 300 if swap

July 25th, 2015, 09:55 AM	#3
EMSRacer07 ninjette.org sage Name: Byron Location: Reno, NV Join Date: Dec 2011 Motorcycle(s): Ninja ex250 1990 Posts: 761	Also I made the 300 gauge cluster fit on my pregen. I would do the same in your case since it would be a big pain to re-pin the newgen cluster to get all the same data from the 300 cluster. 300 cluster looks better anyways and is digital __________________________________________________ 1990 250F. ex300 motor swap, 15/42 gearing, flush side markers, newgen intergrated front fairing, rear integrated turn signals, DB Touring Bubble, zx600 rear shock, Custom DanMoto Exhaust
	1 out of 1 members found this post helpful.

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July 25th, 2015, 05:41 PM	#6
Somchai Freedom for Germany Location: This World Join Date: May 2011 Motorcycle(s): Ninja 250R-FI Posts: A lot.	Unlike @EMSRacer07 I would go the different way and start with the cable, wire and hose routing before the engine is mounted. You can find that all described with the pictures in the Appendix-Sections of the 300 Manual.