So I have been looking to get into the old bikes again and I have heard some issues that come about on the YZ 400/465/490. What all did you do to keep this reliable, and prevent engine destruction (ex. jetting, reinforcing parts, mods, etc) Basically I want one that I can be sure when I go in the garage it isn't gonna give me hell and when I get it to the trail it's gonna run all day (might be a lot to ask of a late 70's bike)
Anthony Spadaro well if I've learned anything about them its that you can't have a minor problem on them. you can't just be like oh it will be fine I'll take it out today and fix it before my next ride. little problems lead to big ones super quick on them. keep on top of everything and it will be fine
It's a 'F', I remember seeing a '79 250F back in the day. Back in those days Yamaha wouldn't have dreamt of building a four-stroke motocross bike. The F is just a letter they came up with to denote that particular model. It sure doesn't mean "Four Stroke" like today. Probably stands for 'Fuckin awesome' lol
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We ride all year long up here in the Northeast..Snow scrambles and trail riding..Ice races inside and out..Snow is our friend.
A 78 yz 400 will out run that 79 no problem
Where u getting ur pistons from
Where can I get a good carb
Ya for real how much!
have you rode a 77 or 78?
So I have been looking to get into the old bikes again and I have heard some issues that come about on the YZ 400/465/490. What all did you do to keep this reliable, and prevent engine destruction (ex. jetting, reinforcing parts, mods, etc) Basically I want one that I can be sure when I go in the garage it isn't gonna give me hell and when I get it to the trail it's gonna run all day (might be a lot to ask of a late 70's bike)
Anthony Spadaro I've got no problems running mine all day
Anthony Spadaro well if I've learned anything about them its that you can't have a minor problem on them. you can't just be like oh it will be fine I'll take it out today and fix it before my next ride. little problems lead to big ones super quick on them. keep on top of everything and it will be fine
JB, how much do you raise the forks in the triple clamps?
no four stroke
Where did get the seat? Thanks!
How much?
Not a f. Don't disgrace the 2 stroke...
It's a 'F', I remember seeing a '79 250F back in the day. Back in those days Yamaha wouldn't have dreamt of building a four-stroke motocross bike. The F is just a letter they came up with to denote that particular model. It sure doesn't mean "Four Stroke" like today. Probably stands for 'Fuckin awesome' lol
L1k3TheH0st don't disgrace yourself with your lack of knowledge in 1979 yamaha made a 2 stroke yz 400f I own one and it is a yz400f
L1k3TheH0st yeah the 77 was a d 78 e 79f. the whole f to mean four stroke is a new thing
L1k3TheH0st and there a bitch to find parts on eBay because you get all sorts of yz400f four stroke stuff pop up
Curtiss Marshall yeah it is a bitch looking for 79 400f parts don't I know it