Not sure if you've seen this, but looks to me a pretty damn cool series on rebuilding a CR250
http://twostrokemotocross.com/2010/0...-cr250-part-1/
Old & unwise
Not sure if you've seen this, but looks to me a pretty damn cool series on rebuilding a CR250
http://twostrokemotocross.com/2010/0...-cr250-part-1/
Forum whore
Some nice tips in that.
Moped rider
thats a good site.that guy that built those 2 mc grath replicas did a awesome job..cant wait til he finishes his e.f.i cr using 01 mtr
Forum whore
Oh really? EFI would be much better to do to teh 02 onwards motor.
Moped rider
he is using the 01 cause they are better than 02 onwards..service honda uses the 01 engine for there new cr and trx..something to do with the power valve set up and crank case volume, on the 02 onwards you have to epoxy the crank case to reduce volume
Hardcore Biker
Whats a 4t rider doin lookin at 2t sites? hmmmmm?Originally Posted by takitimu
HOW DARE YOU SAY I HAVE A BIG PIPE
Sometimes I ride Slow, sometimes I Ride Quick, But When its Time To Get Busy Out The Hat Comes The Trick.
Forum whore
Really? is the crank case that big? that sounds a bit rubbish to me. The power valve is electronic so you could make really good use of that.
What is this new CR you talk about?
Hardcore Biker
http://twostrokemotocross.com/2009/0...rath-replicas/
Dang, would be nice to be able to do this sorta thing.
HOW DARE YOU SAY I HAVE A BIG PIPE
Sometimes I ride Slow, sometimes I Ride Quick, But When its Time To Get Busy Out The Hat Comes The Trick.
Moped rider
service honda in the states make brand new bikes using 2010 crf frames with new cr500 mtr,also 2010 cr250, crf-x frame with cr250 and cr 250 powered quads all using new 01 cr250 mtr's...also do alloy frame kx500 and yz300
ps.yes crank case volume is to large on 02 onwards. fact not rubbish but thats ok
Old & unwise
, It's interesting reading, I really like the 250 4t currently, but a direct injection 2t would be a very very interesting bike.
Forum whore
Sorry I wasn't trying to discredit you, just seems an odd point to deal with. Especially if you are going to EFI it. I assume that they are going to straight swap the carb for injectors which will give more accurate fuel amounts, but you don't get any benefits like you would if you use direct injection.
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