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Honda elsinores cr or MT helped needed https://vintagedirtbikeforums.alp-sys.com/viewtopic.php?f=21&t=770	Page 1 of 1

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Author:	hotrodlincoln [ Thu Sep 08, 2005 10:52 am ]
Post subject:	Honda elsinores cr or MT helped needed
I have a 74 MT 250 elsinore motor and wanted to know if I could use the head and cylinder on my 73-74 cr 250.? Are they the same or different? what other parts are interchangable? My serial # is Mt 250E 1001029

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Author:	ricortes [ Thu Sep 08, 2005 11:14 am ]
Post subject:
They are different but you can interchange them. A major difference is the MT intake manifold uses 2 bolts instead of 4 so you have to use it and an MT carb. Mostly 73-74 CR250s will work with 74-76 MTs. CR rings/pistons changed in 75 but I think you can get away with using a 75-76 CR piston in a 73-74 CR or 74-76 MT if you right rings as the wrist pin and bores are basically the same.

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Author:	hotrodlincoln [ Thu Sep 08, 2005 11:20 am ]
Post subject:
Thanks for the info. I looked at the MT intake and it has four bolts just like my cr. Are the ports any different and is the bottom end gears the same? thanks

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Author:	Elsinorestuff [ Thu Sep 08, 2005 7:09 pm ]
Post subject:
If you have four bolts holding on the intake and a 34mm carb instead of the 28mm MT carb then you have a 73-74 CR250 cylinder on there already.

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Author:	hotrodlincoln [ Thu Sep 08, 2005 7:14 pm ]
Post subject:
thats sounds like what I have except I don't have the carb. but the intake looks exactly the same size as cr's. How do I tell what bore the cylinder is on? what MM is the standard bore? Thanks

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Author:	Jake [ Sat Sep 10, 2005 10:20 am ]
Post subject:
If you go to the Wiseco Web page they list sizes. 70 mm is standard bore http://www.wiseco.com/PDFcatalogs/CB05_honda.pdf

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