OzVMX Forum

Clubroom => Tech Talk => Topic started by: PCMAX on July 22, 2012, 06:40:47 pm

Title: MT 250 Barrel on a CR
Post by: PCMAX on July 22, 2012, 06:40:47 pm

Anyone know if the MT barrel drops straight on to the CR? What's the difference in power spread?

Title: Re: MT 250 Barrel on a CR
Post by: Noel on July 22, 2012, 06:52:28 pm

Not your 75/76 CR, ehaust port on opposite side
will fit 73 /74 but you need the head as well, and probably the piston,
a very detuned   compared to CR

Noel

Title: Re: MT 250 Barrel on a CR
Post by: PCMAX on July 22, 2012, 07:17:21 pm

Ahhh thanks Noel, I just went back and had a look at the pics of the one I was looking at on Ebay (http://www.ebay.com.au/itm/260974336819?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649) and you are quite correct exhaust on the wrong side. The upside down pics threw me a bit though I was almost convinced it would fit.

I can go tell the wife I just saved another $97.50 on VMX parts then ;D ;D ;D

Title: Re: MT 250 Barrel on a CR
Post by: Lozza on July 22, 2012, 11:42:08 pm

Modified MT cylinder is the best thing you can do for a CR.

Title: Re: MT 250 Barrel on a CR
Post by: jimg1au on July 23, 2012, 07:33:52 am

lozza
they dont fit 75/76 crs only 73/74 i have both cr engines

Title: Re: MT 250 Barrel on a CR
Post by: jimg1au on July 23, 2012, 08:07:48 am

this is what you need
http://www.ebay.com/itm/CYLINDER-JUG-BARREL-PISTON-76-HONDA-CR250M-CR250-CR-250-/400311432205?hash=item5d346bb40d&item=400311432205&pt=Motorcycles_Parts_Accessories&vxp=mtr

Title: Re: MT 250 Barrel on a CR
Post by: PCMAX on July 23, 2012, 09:09:18 am

Quote from: jimg1au on July 23, 2012, 08:07:48 am

this is what you need
http://www.ebay.com/itm/CYLINDER-JUG-BARREL-PISTON-76-HONDA-CR250M-CR250-CR-250-/400311432205?hash=item5d346bb40d&item=400311432205&pt=Motorcycles_Parts_Accessories&vxp=mtr

Jimg1au, why?
is the 76 CR cylinder any different to the 75 one? Was the porting different?

Title: Re: MT 250 Barrel on a CR
Post by: Lozza on July 23, 2012, 11:46:29 pm

Later has short base studs early has long through studs, early has exhaust duct on the right later has outlet on the left. I have a 75 model here ATM I'll see how hard it would be to fit the early cylinder and use long studs/bolts. Early cylinder looks like it has more potential especialy if you convert to a reed.

Title: Re: MT 250 Barrel on a CR
Post by: jimg1au on July 24, 2012, 06:17:30 am

i domt think so it was for sale if you needed one.i think matcho mick has a nos 75/76 barrel for sale
jim