honda crf100, zongshen 150cc engine project - Page 2

Jim · 03-10-2011, 09:20 PM

It looks great, hope you can get the wiring sorted out

SpudRider · 03-10-2011, 11:06 PM

You've done a lot of good work, Jarrod! Thank you for sharing this project with us.

Weldangrind knows his Honda engines, so you will be wise to heed his consul.

I agree with WaG; you don't appear to have a Yamaha engine. :?

Spud

FastDoc · 03-10-2011, 11:58 PM

Quote:

Originally Posted by Weldangrind

Quote:

Originally Posted by FastDoc

It's not from a Q, it's a generic Honda based vertical OHV engine. They are pretty much all the same.

Are you certain Doc? I haven't seen one with a removeable oil filter cover on the right side before. I'm only familiar with the oil screen behind the large nut on the left side.

The '84 and '85 XR200 and XR250 likely had a filter on the right side, but they also had a four valve head with twin exhaust pipes in a header. the XR250 continued that way until the end of the run, but the XR200 went back to a two valve head in '86. Perhaps the oil filter location was changed after that, IDK.

That engine is definitely not a Yamaha style, but I'm struggling to figure out just what it is.

It does have an oil filter cover which is unusual but from the other side it looks very generic OHV Hondoid. And no I'm not sure. The older (wiser?) I get the less sure I am about anything! :oops:

jerrodwagner · 03-11-2011, 12:32 AM

That just appears to be an oil filter, in reality it is just part of the case, it doesent unbolt. It has the filter screen the cap on the bottom like crf230, and later 200's. I cant seem to find anything it really compares to. The engine mounting pattern is exactly the same as my 230 tho.?? As long as it runs is all that matters to me.

SpudRider · 03-11-2011, 12:39 AM

Quote:

Originally Posted by jerrodwagner

That just appears to be an oil filter, in reality it is just part of the case, it doesent unbolt. It has the filter screen the cap on the bottom like crf230, and later 200's. I cant seem to find anything it really compares to. The engine mounting pattern is exactly the same as my 230 tho.?? As long as it runs is all that matters to me.

I thought the oil filter cover looked fake! :roll: Perhaps Zongshen just changed the appearance of the right crankcase cover, and the rest of the engine is a Honda clone, as Doc proposed.

Spud

jerrodwagner · 03-11-2011, 12:41 AM

Anyone have an idea of what speeds this thing will be capable of.? 50 cruising maybe 60 all out.?

Weldangrind · 03-11-2011, 01:44 AM

It'll depend on gearing, but 50-60 flat out sounds plausible. If you gear it for that speed, you'll rob from the bottom end.

FastDoc · 03-11-2011, 11:34 AM

Agreed. Especially with a sub 100 pound rider. :P

03-10-2011, 09:20 PM	#16
Jim Join Date: Mar 2007 Location: Abbotsford, BC, Canada Posts: 4,880	It looks great, hope you can get the wiring sorted out __________________ "Be excellent to each other" "We are all human. Let's start to prove it!"
	0

03-10-2011, 11:06 PM	#17
SpudRider Join Date: Jul 2008 Location: Idaho Posts: 25,054	You've done a lot of good work, Jarrod! Thank you for sharing this project with us. Weldangrind knows his Honda engines, so you will be wise to heed his consul. I agree with WaG; you don't appear to have a Yamaha engine. :? Spud __________________ Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894
	0

03-11-2011, 01:44 AM	#22
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	It'll depend on gearing, but 50-60 flat out sounds plausible. If you gear it for that speed, you'll rob from the bottom end. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	0

03-11-2011, 11:34 AM	#23
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	Agreed. Especially with a sub 100 pound rider. :P __________________ Happy to serve.
	0

03-11-2011, 12:32 AM	#19
jerrodwagner Join Date: Mar 2011 Posts: 9	That just appears to be an oil filter, in reality it is just part of the case, it doesent unbolt. It has the filter screen the cap on the bottom like crf230, and later 200's. I cant seem to find anything it really compares to. The engine mounting pattern is exactly the same as my 230 tho.?? As long as it runs is all that matters to me.
	0

03-11-2011, 12:41 AM	#21
jerrodwagner Join Date: Mar 2011 Posts: 9	Anyone have an idea of what speeds this thing will be capable of.? 50 cruising maybe 60 all out.?
	0