The XR400 Thread

[IronSpadeCycles]

When I rode my XR4 the 5200 mile round trip to Portland OR from Houston TX, half the route was offroad and the other half back country 2-lane and blacktop. I changed both the oil and filter every 2000 miles, and each time the Lucas full synthetic oil came out of the motor looking like I had just put it in. I might have been safe to run it another couple thousand between changes, but I know in the past, a few hard dirty days in the forest with water and muddy ruts and my oil always comes out a little milky, I don't know how but moisture seams to get into the engine no matter how hard I try to keep it out.

If you ride strictly offroad and in mud or really dusty areas, then change it after every ride. Its cheap insurance. 3 qts of oil is cheaper than a new rebuild.

Goodluck, Travis

[birds]

I am do 1-2000 too with amsoil. I ride easy. 600 is the company safe estimate for hard riding with lots of sand mud water dust

[birds]

Does anyone use the BD 90/100watt light? Are you happy with it?

I'm looking to replace my trail tech dual sport DOT light. It doesn't fit well with my tank (Acerbis 5.8). The high beam is fine, but the low beam is just insufficient. In the winter I find myself riding in the dark way more often, and I live in a very populated area where I can't just use the high beam all the way home.

Any other light suggestions would be appreciated, too. I'm looking for something DOT approved, and I have roughly 125 watts to work with (1/2 of BD rewound stator).

[Tachedoutoffroad]

loved the xr !!!! wooohooo!!! The 310 will be for sale shortly

The suspension is deffintly "less refined" but the bike did great. Rode 40 miles with no tag there and then back on the slab and 50 miles of 2 track, single track, a little no track , and dirt rds. Only had one bad fall-over-kicking-fit but I was more tired form the stupid hill that had 8'-10" logs EVERYWHERE than the kicking fit.

I rode 4 miles down the interstate just to see and a state trooper eased passed me and never slacked up Its like at work when you look like youre busy, everybody assumes whatever youre doing is ok. Serioulsy, wat kind of dummy rids a drt bike with no tag downe the intrstae with no tag

It was just me and a buddy and he had the gropro, so I got a great video of just me riding It sure felt like I was going faster and jumper higher than it looks, but i still had a fukin blast!

http://youtu.be/7g90wP7FfG8

[G600]

Nice video Tachedoutoffroad.

[Czechsix]

Ok, top end time. And other things.

I'm thinking the Wiseco 416 10:1 kit for the jug, CRF450 cam chain, new cam chain guides, new tensioner, Hotcams stage 1, new rocker arms, possibly new valves/springs, definitely new guides, 3 angle grind, mild port job, new clutch plates and springs (who's got decent ones? OEM?), and then ride the snot out of it again.

This is a '98 bike, I'm pretty sure it hasn't been touched as far as the engine guts go since....oh, 1998 or so. It's time.

I'd like to keep it low comp, but a bit more power doesn't hurt. I plan on going places that might only have regular pump gas, so I have no interest in high comp pistons.

What am I missing?

[Rman237]

East Tex 450 last weekend. Three day ride but 3 of us decided to ride the whole 455 miles in one day! We made it, 13 hours!!Here's Nine Mile Road.

[DrLewall]

Originally Posted by Czechsix

Ok, top end time. And other things.

I'm thinking the Wiseco 416 10:1 kit for the jug, CRF450 cam chain, new cam chain guides, new tensioner, Hotcams stage 1, new rocker arms, possibly new valves/springs, definitely new guides, 3 angle grind, mild port job, new clutch plates and springs (who's got decent ones? OEM?), and then ride the snot out of it again.

This is a '98 bike, I'm pretty sure it hasn't been touched as far as the engine guts go since....oh, 1998 or so. It's time.

I'd like to keep it low comp, but a bit more power doesn't hurt. I plan on going places that might only have regular pump gas, so I have no interest in high comp pistons.

What am I missing?

uh, nuttin..get after it there Hoss!

I know that when I go to redo mine, I too will go 416..the 440 has served me well and will continue to do so until then, but from what I have read, the 416 seems to be a bit more ballanced out for the ole XR and I really don't need a 440..knowatimean?

[mark1150]

Hi Guy's,
I discovered a slight leak from the carb on my baby, so decided to buy the carburettor gasket set from my local Main Dealer, at the cost of £20 / $40?.
As it turned out I only needed the float bowl drain plug ' O' ring, so I am left with the rest of the set for the next time.
Anyhow I rang the dealer to see if I could buy just the 'O' ring, so as to have a complete set in stock, and they say that I can't just buy one seal...

So here's a question, can I use any suitably sized 'O' ring to replace the one that I've used, or does it have to be a special petrol resistant material?, the alternative is a bloomin expensive replacement seal!

Thanks
Mark.

[Rman237]

Originally Posted by mark1150

Hi Guy's,
I discovered a slight leak from the carb on my baby, so decided to buy the carburettor gasket set from my local Main Dealer, at the cost of £20 / $40?.
As it turned out I only needed the float bowl drain plug ' O' ring, so I am left with the rest of the set for the next time.
Anyhow I rang the dealer to see if I could buy just the 'O' ring, so as to have a complete set in stock, and they say that I can't just buy one seal...

So here's a question, can I use any suitably sized 'O' ring to replace the one that I've used, or does it have to be a special petrol resistant material?, the alternative is a bloomin expensive replacement seal!

Thanks
Mark.

Any auto parts store will have the O ring you need, just take yours in and match it up.

[Tachedoutoffroad]

Originally Posted by Rman237

East Tex 450 last weekend. Three day ride but 3 of us decided to ride the whole 455 miles in one day! We made it, 13 hours!!Here's Nine Mile Road.

455 in one day of that is pretty serious what kind of milage did you get?
looks fun

[Roostboy101]

Originally Posted by Czechsix

Ok, top end time. And other things.

I'm thinking the Wiseco 416 10:1 kit for the jug, CRF450 cam chain, new cam chain guides, new tensioner, Hotcams stage 1, new rocker arms, possibly new valves/springs, definitely new guides, 3 angle grind, mild port job, new clutch plates and springs (who's got decent ones? OEM?), and then ride the snot out of it again.

This is a '98 bike, I'm pretty sure it hasn't been touched as far as the engine guts go since....oh, 1998 or so. It's time.

I'd like to keep it low comp, but a bit more power doesn't hurt. I plan on going places that might only have regular pump gas, so I have no interest in high comp pistons.

What am I missing?

I'm in the middle of mine right now. Keepin' it as close to stock as I can. I know next to nothing about working on this stuff. I sent my jug and head out and the guy ordered piston kit and gaskets for me. Said it's a 410? Anyway...

What can you guys tell me about the kicker ratchet!? When I pulled the side case off (to replace cam chain) the kicker ratchet fell out. I know how it's supposed to go together but the manual is a little vague on how much tension to put on the return spring. Anybody have pics orrr....

Thanks in advance!

[DrLewall]

Originally Posted by Rman237

Any auto parts store will have the O ring you need, just take yours in and match it up.

what he said!

[Clem Kevin]

Anybody know if a CRF450 seat cover will fit on an XR400 seat? My neighbor has a stack of SDG seats he's selling and he gave me one because my seat cover is nasty.

[mark1150]

Originally Posted by Rman237

Any auto parts store will have the O ring you need, just take yours in and match it up.

Originally Posted by DrLewall

what he said!

Thanks for the replies guys, the reason that I'd been so paranoid about getting the correct base material is because I'd read something about fuel 'O' rings having to be made from something called Buna N.
A little look around Google, and it transpires that Buna-N is one of the trade names for a material called Nitrile , a type of synthetic rubber most commonly used in the manufacture of 'O' rings.

It must be said that my main concerns were relating to reliability of the part were owing to 1) The bike is kept in a garage which is part of the house, and one of my sons sleeps above it,and we've already had the fuel leak which stunk out his room with fumes! and 2) I didn't want a failure while out in the boonies.

Thanks again, and as usual you guys are awesome in the knowledge dept!
Mark.