NSR125 with big engine?

[kingiro]

Is it posible to put a 250 or 400cc, 4 stroke engine on Honda NSR125R?

[TUG]

anything is possible with a grinder and a welder, i dont know if any are a direct fit, gixxermick has the nsr250 am sure he will be in here soon to give a few suggestions, have you been over to nsrworld? or any other NSR forums? there might be a few users on NSR forums who have done similar mods.
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Haz ER-5, innit!

[hmmmnz]

i dare say you could get a largish thumper in there,,
due to how narrow the frame is, you would only get a single in,
i reckon you could get a xr400 or xr600 engine in with little bother,
you may have to get a cradle made up, but, you might get away with just some adapters for the engine mounts.
i think if i had an engine and a frame, i would defently give it a go,
but bodging on that scale isn't every ones cuppa tea
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the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[Blau Zedong]

** waits to here from xlonewolfx as to why an NSR250 owner would be able to advise on putting a bigger lump in an NSR125....**
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18:54:48 Rob Fzs: jews don't give away stuff for free

18:54:59 Rob Fzs: unless its their clothes/ hair/ golden teeth

[2t-Screamer]

[Pete.]

I know a guy who fitted a cb500 engine in a Mito.

Oh and it's turbocharged, and intercooled.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[TUG]

[Blau Zedong]

lonewolf, just be a man and admit it was a fcuking stupid assumption to make.
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18:54:48 Rob Fzs: jews don't give away stuff for free

18:54:59 Rob Fzs: unless its their clothes/ hair/ golden teeth

[TUG]

lol no, but fitting a bigger engine to a 125 is a stupid fuckin idea tho, if your gunna put a bigger fuckin engine in a frame for a smaller lower powered machine then the frame will need strengthening, you will have to have mounts made to fit, you will have to make sure the front sprocket lines up with the rear one.
why not save your fuckin money and buy a 600?

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Haz ER-5, innit!

[Pete.]

[hmmmnz]

fitting a larger engine to a nsr 125 frame isn't a stupid idea, and a 4 stroke single generally won't be any more powerful than a smokey single, a nsr is around 30hp derestricted, which is about the same as a xr400,
the frame is more than capable of handling alot more than 30 measly hp with out having to strengthen it in the slightest.

if i had a rolling chassis and a xr400 engine sitting out side right now,
i wouldnt even think twice about trying to merge the 2 together to make a light, reliable, and easy to ride, smooth revving little pocket rocket
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[Blau Zedong]

[TUG]

ban me from the workshop section then, i told him to ask a person who owns a nsr or ask a nsr dedicated forum, why is that so fuckin wrong? mick put a 1000 lump in a 400 if i remember correctly.

bluex5 i dont care if i post shit, its you who gets pissed off reading it. am not telling him to pour sand in is engine, or should i?
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Haz ER-5, innit!

[kingiro]

Thank you for the answers (excuse me for my English I'm from Bulgaria).The reason that I want to change the engine is because the origina one is two stroke and 125cc.(brokes every two years and heat up very fast).4 strokes engines have longer life and are more economic.I sell this bike for 500 pounds in BG.Is it a good prise.

[hmmmnz]

did you buy it for £500 or sell it for £500
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[st3v3]

Whether the frame can handle it or not, I'd be sceptical but it could be done.
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Roger wrote: Women don't get damp for clingy puppies. Get some better happy pills, hit the gym & buy a medallion the size of a dinner plate. Job done

[G]

[kingiro]

I'm selling the bike for 500 pounds in BG.