Thumper Club Forum

Club House => Chatter => Topic started by: Dogwheel on May 16, 2026, 06:03:17 PM

Title: Engine Swap?
Post by: Dogwheel on May 16, 2026, 06:03:17 PM

Just wondering, is there any (Chinese?) Electric Start engine I could transplant into my CB250RS?  I wouldn't object to a jump (up) in capacity. Unless anyone has a decent RS250"D" lump for sale.

Title: Re: Engine Swap?
Post by: Itsme on May 21, 2026, 07:13:39 AM

Hi and welcome

I honestly don't know the answer to your question as I have no experience of Chinese engines, or for that matter RS250s, but I think a lot of Chinese engines are based around Suzuki GN series engines or Honda engines like the XR series. I suppose you have had a look at the Projects section of this website to see some of the amazing engine swaps people have done, might give you some encouragement or insight. Hope you get sorted.

Ian

Title: Re: Engine Swap?
Post by: xbally on May 21, 2026, 04:00:10 PM

Yes, I've always thought the RS would benefit from a bit more umph.
I believe it's possible to fit the XL500 or 600/650 lump or maybe the FT or XBR but that's way beyond my abilities. There used to be a guy on here who'd done the conversion if you search.