How to do mods on a '95 XR250?

[mcleodclan]

Hi i have a 95 xr 250 jap import and want to no if there are any easy quick mods to Improve it .its a daily runner to work so don't wana go over board ....and will the CRf
muffler fit with a few modifications of course as i want a. it better sound with out spending to much
Cheers.....

[Akzle]

an angle grinder and matt black primer spray paint.

sack that shit on chromies bro.

[mcleodclan]

Wat u mean

[FJRider]

Wat u mean

It's as good now as it EVER will be. Whatever you do to it will be a trade-off to what it supposed to do.
Save your time and money on a bike thats worth the effort.

[dino3310]

WR muffler on my XR, sounds good goes good, if youve got a CRF one try it out. If your looking for more power and torque it could be worth looking at an up size to a bigger chook chaser. ive got mine in work mode at the moment, kinda looks a little gay with the top box:pinch: but its practible and fun getting around town to work, it only takes an hour to switch back to ADV mode.
like most bikes airbox jets and exhaust will pump her up a little even a 280 kit.
I think the XR250 is one of those bikes that do the business in stock form if ya want more then its time for an up size.
I also think stock XR mufflers are shite.

sift through this thread there should be lot of info http://advrider.com/forums/showthread.php?t=430219&highlight=XR250

[dino3310]

even in the XR250/400 forums on here theres some good info http://www.thumpertalk.com/forum/18-xr250400/

[TINA RAY]

IF IT GOES GOOD, LEAVE IT ALONE ......otherwise you will fuck it.:nono:


If you are asking KB for advice ( there are only about 3 people on here who know their stuff) and going on the net, then you have no idea what you are doing.......so whatever you do, do, will turn to shit.


BUT....at least you will have an experience....

[dino3310]

IF IT GOES GOOD, LEAVE IT ALONE ......otherwise you will fuck it.:nono:


If you are asking KB for advice ( there are only about 3 people on here who know their stuff) and going on the net, then you have no idea what you are doing.......so whatever you do, do, will turn to shit.


BUT....at least you will have an experience....

theres more than 3 on here and i know of a few qualified mechanics on here, but yeah if ya dont know what ya doing be weary cause it can turn to shite, if ya do start fildling make sure its reversable, dont forget that the XR's were top performing enduro's in there day so there made to perform so stock bikes are pretty dam good.
never heard much in the way of 250's getting modded except for the 280kit, most just upgrade to the 400 or the mighty 600:headbang:
upgrading the muffler wont hurt it much unless it leans it right out which would eventually root it, it might change the performance weather positively or negatively more likely the negative with out jets and airbox to match. at least with the mufler you can swap it back if ya dont like it.
jump on my 600 when we hook up for a ride,:scooter: simular discomforts just a shite load more torque.:headbang:
one thing i like about the XR250 is its a fantastic trail bike, i rode one a few times over thompsons track and the gearings way better suited for that than the 600(with my ride skills anyway)

FJrider makes a Good point

[gammaguy]

IF IT GOES GOOD, LEAVE IT ALONE ......otherwise you will fuck it.:nono:


If you are asking KB for advice ( there are only about 3 people on here who know their stuff) and going on the net, then you have no idea what you are doing.......so whatever you do, do, will turn to shit.


BUT....at least you will have an experience....

wot she sed

but dont let that stop you:

a:fucking with it

b:posting pictures of the results

c:giving everyone on here a good laugh

d:having us who know tell you we told you so

its traditional after all.....

[ducatilover]

Give it to me with half a tank of gas and I'll flip it, then I'll build it in to something extreme :2thumbsup

[hayd3n]

keep it simple .
new plug
new oil /filter
replace/clean air filter
clean carburetor/s
adjust chain tension to spec
and set tyre pressures

[NordieBoy]

Even the 250's respond well to a bit of "Gordon's Mod" tinkering.

I cleaned up the head on mine, matched up the intake ports with the manifold, skimmed the flywheel and it ran really, really well.

Although, to be fair, it was the superior 1979 model :D

[Akzle]

I cleaned up the head on mine, matched up the intake ports with the manifold, skimmed the flywheel and it ran really, really well.

fkn good show. when you say "cleaned up the head" are we talking a hone? or planing the faces?

good show. good show.

[ducatilover]

fkn good show. when you say "cleaned up the head" are we talking a hone? or planing the faces?

good show. good show. How do you hone a head :bleh: I reckon he's saying he port matched it, like I did to my GN250/300

[NordieBoy]

fkn good show. when you say "cleaned up the head" are we talking a hone? or planing the faces?

good show. good show.

You take the head off, turn it upside down and go to town with the dremel in the combustion chamber.

I would have liked to do a bit of MotoMan style velocity porting (I like torque) but there wasn't enough room to start with.

The head is coming off the TT350 soon to do the cam chain & guides and I'll look at the ports on it at the same time.

[Akzle]

How do you hone a head :bleh: I reckon he's saying he port matched it, like I did to my GN250/300

yeah i got that. with his
matched up the intake ports with the manifold
honing anything = as he said -> (with a dremel) and honing stone.

[NordieBoy]

yeah i got that. with his
honing anything = as he said -> (with a dremel) and honing stone.

What's a honing stone?

I use the sanding drum attachment on the dremel.

[TINA RAY]

Nothing like a good honing eh !

[Akzle]

What's a honing stone?

I use the sanding drum attachment on the dremel.
any stone that removes materiel. generally not very much. sandpaper achieves same result.
i'f be interested in pics. were you just going for a clean up or playing with the swirly-ness?


Nothing like a good honing eh !

i love honing.

[TINA RAY]

any stone that removes materiel. generally not very much. sandpaper achieves same result.
i'f be interested in pics. were you just going for a clean up or playing with the swirly-ness?

No, he was lowering the compression ratio !

[NordieBoy]

any stone that removes materiel. generally not very much. sandpaper achieves same result.
i'f be interested in pics. were you just going for a clean up or playing with the swirly-ness?

Would have done it in about 2005. No photos. There were some edges and ridges I wasn't happy with but in hindsight they were probably good for swirlyness.
I think my main contribution to performance was cleaning up the intake and exhaust and knowing when to stop :scratch:

Brother replaced the rings this year and it's back to awesomeness again...

21" front wheel, YSS PD valves, Works Performance rear shocks...
<img width=640 src=http://sports.nelson.geek.nz/motorsport/mybikes/xr250/20080802%20Cleaning/slides/20080802-134030-000013.jpg>
and in 2007, DR650 footpegs...
<img width=640 src=http://sports.nelson.geek.nz/motorsport/mybikes/xr250/20071017%20Footpegs/slides/20071019-112800.jpg>

Never got around to installing any of the 6-speed gearboxes I'd accumulated...

[dino3310]

Heres a good one bro, nice an simple http://www.rickramsey.net/XR250R.htm

i just googled XR250 mods and walla theres heaps of linky's

[gammaguy]

fkn good show. when you say "cleaned up the head" are we talking a hone? or planing the faces?

good show. good show.

please inform me and the audience how you hone a head...

[Akzle]

please inform me and the audience how you hone a head...
hone (hohn) noun, verb, honed, hon·ing.

verb (used with object)
3.
to sharpen on a hone: to hone a carving knife.
4.
to enlarge or finish (a hole) with a hone.
5.
to make more acute or effective; improve; perfect:

grind mis-castings off, bevel edges, finish rough surfaces... could even include honing the valve seats...
=same as y' hone anything else, with appropriate abrasive /stone.

[ducatilover]

We call it port work.
But I think honing is technically right?

I've port matched the GN head an clean the combustion chamber up. Might have about 900000hp now.
:lol:

[Akzle]

We call it port work.
But I think honing is technically right?


yeah. there probably was a more correct terminology to be used. but i wasn't specifically referring to the ports. more the head.

but this is KB. one can't come off an argument just 'cause they might be wrong!

[ducatilover]

but this is KB. one can't come off an argument just 'cause they might be wrong!
This is true.
I thought I was wrong once, sadly I was mistaken.

[Oscar]

Probably the most economical and efficient mod possible on a '95 XR250 is to trade it in on a '96 XR400...

[FJRider]

We call it port work.
But I think honing is technically right?

I've port matched the GN head an clean the combustion chamber up. Might have about 900000hp now.
:lol:

A hone is usually referred to the quick polish of the bore. Instead of machining it out to the next specific sized re-bore with a milling machine.

Work on the head used to be known as a "Port and Polish" ...

[dino3310]

A hone is usually referred to the quick polish of the bore. Instead of machining it out to the next specific sized re-bore with a milling machine.

Work on the head used to be known as a "Port and Polish" ...

bit like sex really:lol:

[FJRider]

bit like sex really:lol:

Sort of ...the exaust port needs a bit more care with the tools you use though.

But if your missus calls you "the reamer" ... I think it's a good thing. :2thumbsup

[ducatilover]

A hone is usually referred to the quick polish of the bore. Instead of machining it out to the next specific sized re-bore with a milling machine.

Work on the head used to be known as a "Port and Polish" ...
I'm muchly aware of these things, but I do believe he is right in terms of, err, terminology if one was to, say, polish an exhaust port.
I 'll keep calling it port work though (hookers love port work)

[TINA RAY]

..EXCUSE ME !!!


I have now given up that line of work, THANK YOU VERY MUCH !!!!!:mad:

[dino3310]

..EXCUSE ME !!!


I have now given up that line of work, THANK YOU VERY MUCH !!!!!:mad:

Was TonyW your working name:killingme

[dino3310]

So How you getting on Mcleodclan have ya started tinkering yet, dont forget the compulsary beers when working on bikes:laugh:

[mcleodclan]

Well were do i start ....I am a whiskey drinker first and foremost lol. I put in a ergo aftermarket

air filter,removed the snorkel thing put Castrol synthetic oil in 1.4 litres ...put a 12 tooth sprocket on the front as i am 108 kgs and she struggled a littlewith
Me and my back pack lol ...worked it out it does extra 400 rpm at 100 with. The 12 tooth but .....went for a ride and the steering got real stiff so found steering head bearings are stuffed argh ...any help out there
Oh and i drilled 3 six mm holes in the muffler as i cant get the baffle out its welded in

[dino3310]

Well were do i start ....I am a whiskey drinker first and foremost lol. I put in a ergo aftermarket

air filter,removed the snorkel thing put Castrol synthetic oil in 1.4 litres ...put a 12 tooth sprocket on the front as i am 108 kgs and she struggled a littlewith
Me and my back pack lol ...worked it out it does extra 400 rpm at 100 with. The 12 tooth but .....went for a ride and the steering got real stiff so found steering head bearings are stuffed argh ...any help out there
Oh and i drilled 3 six mm holes in the muffler as i cant get the baffle out its welded in

easy to replace mate, the manual's pretty straight forward... Torque wrench helps get it right, i didnt use one and had to retighten after first ride. http://www.bits4bikes.co.nz/parts/honda/625.aspx

[mcleodclan]

Got the bits and going to give it a go and while its apart change fork oil and put a peload spacer in to make em not sag so much

[humphrt]

First time back on in ages. So I'd go with the xr280 option but that's just cos it's what I got, she's older('88) but still goes well. I think its better than the 400 but again I'm biased.

[dino3310]

one thing i really like about the XRr's is they are relitively easy to work on, love the basic wiring, i do most things on mine myself if i get stuck i ring a mechanic mate who's been great for advice.

[TINA RAY]

FACT 1: POWER TO WEIGHT RATIO.

eg.
108 Kgs : 250cc @20 hp = Unhappy BIG-Guy:angry:


''Modified'' 250cc +$$$$ + noise + extra fuel usage @ 18hp = BIG-Guy crying.:facepalm::sweatdrop:


ON THE OTHER HAND:

>400cc + BIG-Guy = :sunny::sunny::sunny::yes:


Facts are FACTS.....emotion doesn't change the FACTS !

[Oscar]

FACT 1: POWER TO WEIGHT RATIO.

eg.
108 Kgs : 250cc @20 hp = Unhappy BIG-Guy:angry:


''Modified'' 250cc +$$$$ + noise + extra fuel usage @ 18hp = BIG-Guy crying.:facepalm::sweatdrop:


ON THE OTHER HAND:

>400cc + BIG-Guy = :sunny::sunny::sunny::yes:


Facts are FACTS.....emotion doesn't change the FACTS !

That's the first lick o'sense you've made.

[NordieBoy]

''Modified'' 250cc +$$$$ + noise + extra fuel usage @ 18hp = BIG-Guy crying.:facepalm::sweatdrop:
>400cc + BIG-Guy = :sunny::sunny::sunny::yes:

So a >400 uses less fuel than a modded 250?

I'd split the difference myself and get a 350...

[Oscar]

So a >400 uses less fuel than a modded 250?

I'd split the difference myself and get a 350...

XR400:love:
There must be some good'uns left.

[TINA RAY]

So a >400 uses less fuel than a modded 250?

I'd split the difference myself and get a 350...



FACTS: THESE ARE INDISPUTABLE. MEASURED AND TABLED ....personally and XRJohnny.


1/ A 2005 DRZ 250 uses ....10%....MORE FUEL....than a 2005 DRZ 400 SM. ( DRZ 400SM.....27Km/L on ADV.....30Km/L on SH1...)

2/ A 1600 Capri uses MORE fuel than a 2000 OHC Capri.

....don't seem right, does it.........but it is......

......why is it so, Norty ? :)
.................................................. .................................................. ....................................


One cannot get a 350, unless you go to the previous Century....but am willing to be enlightened:mellow:

[NordieBoy]

FACTS: THESE ARE INDISPUTABLE. MEASURED AND TABLED ....personally and XRJohnny.


1/ A 2005 DRZ 250 uses ....10%....MORE FUEL....than a 2005 DRZ 400 SM. ( DRZ 400SM.....27Km/L on ADV.....30Km/L on SH1...)

2/ A 1600 Capri uses MORE fuel than a 2000 OHC Capri.

....don't seem right, does it.........but it is......

......why is it so, Norty ? :)

The answer is torque.

The bigger engines seem to have less of an increase in consumption when giving it the beans compared to the smaller bikes.
My DR650 is about 18-20Km/L no matter what you're doing (Better in the hills).
My TT350 is 18-24Km/L.

That 400 is getting some pretty amazing mileage...


One cannot get a 350, unless you go to the previous Century....but am willing to be enlightened:mellow:

http://4.bp.blogspot.com/-Sj6IFluc5sU/TzwKghJ--yI/AAAAAAAAAzY/hM9hLwX1Tws/s1600/KTM_Freeride350.jpg.1298984.jpg

[neels]

FACTS: THESE ARE INDISPUTABLE. MEASURED AND TABLED ....personally and XRJohnny.


1/ A 2005 DRZ 250 uses ....10%....MORE FUEL....than a 2005 DRZ 400 SM. ( DRZ 400SM.....27Km/L on ADV.....30Km/L on SH1...)


So I'm assuming both bikes were ridden on the same day, the same route by riders of the same weight, with the same gearing and tyres?

Otherwise you can measure and table as much as you like, but you're still comparing apples with oranges..

[TINA RAY]

So I'm assuming both bikes were ridden on the same day, the same route by riders of the same weight, with the same gearing and tyres?

Otherwise you can measure and table as much as you like, but you're still comparing apples with oranges..






YES, YES, YES, YES, AND YES and many times over many years


We are comparing a 250's and a 400's FUEL USAGE....AS STATED!!!



PROVIDE FACTS...and fuck off with your meaningless metaphors...

[george formby]

My DR650 is about 18-20Km/L no matter what you're doing (Better in the hills).

Runs better at altitude then?:innocent:

[TINA RAY]

[QUOTE=NordieBoy;1130383108]The answer is torque.

The bigger engines seem to have less of an increase in consumption when giving it the beans compared to the smaller bikes.
My DR650 is about 18-20Km/L no matter what you're doing (Better in the hills).
My TT350 is 18-24Km/L.

That 400 is getting some pretty amazing mileage...






Your bikes are Too Rich ! :) (have you seen my posts with my 'new' Honda on the XR650R thread?)

''Evidently'' BMW 650 Dakar models get around 27km/L

[TINA RAY]

WTF is that KTM ??? A Nordie photoshop Special !!!!

Look at the ''TRIALS UNIVERSAL'' tyres !!!

Hardly a TRAIL/ADV bike eh



Bloody shit-stirrer as usual.....:innocent:

[neels]

YES, YES, YES, YES, AND YES and many times over many years


We are comparing a 250's and a 400's FUEL USAGE....AS STATED!!!



PROVIDE FACTS...and fuck off with your meaningless metaphors...

Here's a fact, my mate's DRZ400 uses more fuel on the same ride as my DRZ400, and it's got nothing to do with engine capacity.

As an aside, I provided more of an idiom than a metaphor.

As another aside, have you considered attending an anger management course?

[NordieBoy]

Your bikes are Too Rich ! :) (have you seen my posts with my 'new' Honda on the XR650R thread?)
Not too rich according to the Dyno.


I always felt the XR would be good with an electric start and some decent torque down low.

[TINA RAY]

Here's a fact, my mate's DRZ400 uses more fuel on the same ride as my DRZ400, and it's got nothing to do with engine capacity.

As an aside, I provided more of an idiom than a metaphor.

As another aside, have you considered attending an anger management course?


I think you mis-spelt ''Idiot''




You stick to your opinions......that's all you have



I HAVE FACTS






Have you ever thought of going on a Bullshit Improvement course.


Notice no question mark, as it's rhetorical....

I see you have an Honours in Wrist Racing.

[Oscar]

Here's a fact, my mate's DRZ400 uses more fuel on the same ride as my DRZ400, and it's got nothing to do with engine capacity.

As an aside, I provided more of an idiom than a metaphor.

As another aside, have you considered attending an anger management course?

Please don't feed the troll...
http://legacy-cdn.smosh.com/smosh-pit/112010/main-troll.jpg

[TINA RAY]

:angry2:
Please don't feed the troll...
http://legacy-cdn.smosh.com/smosh-pit/112010/main-troll.jpg



For once I agree with you...LOL:yes:



.....how DO you get your pics so BIG?...:angry2:

[NordieBoy]

Please don't feed the troll...

But it's fun and work is slow at the moment...

[TINA RAY]

But it's fun and work is slow at the moment...

S.I. Trip 2013

We are gonna be in Nelson 10/11 Jan...........



....BTW....where's Warewolf these days ?

[dino3310]

FACT 1: POWER TO WEIGHT RATIO.

eg.
108 Kgs : 250cc @20 hp = Unhappy BIG-Guy:angry:

Facts are FACTS.....emotion doesn't change the FACTS !


and the facts dont change the emotion

im just happy to be riding whether it be 18 or 100HP

plus not all mods with decrease HP only the botched or wrongly done will F it up

[TINA RAY]

plus not all mods with decrease HP only the botched or wrongly done will F it up



I agree....:yes:

[JATZ]

One cannot get a 350, unless you go to the previous Century....but am willing to be enlightened:mellow:
Just the other week I got rid of a 2000 DR 350 :D





plus not all mods with decrease HP only the botched or wrongly done will F it up

FWIW my current bike lost a couple of HP when it was fiddled with to run on 91, seems to still go o.k. though :bleh:

[dino3310]

Just the other week I got rid of a 2000 DR 350 :D
at that age im not surprised:laugh:

FWIW my current bike lost a couple of HP when it was fiddled with to run on 91, seems to still go o.k. though :bleh:

to tight for 95+ mate

[TINA RAY]

Just the other week I got rid of a 2000 DR 350 :D
:

ANOTHER SI smartarse !

How's Mrs JATZ ? :)


You will be on our S.I. visiting list if you don't smarten your attitude MR !!!

[JATZ]

to tight for 95+ mate
Yip... :yes:
leaves me more coin for pipe tobacco :D

[neels]

I think you mis-spelt ''Idiot''
Well I wasn't going to call you that outright, but if that's how you want it..

You stick to your opinions......that's all you have
I've got opinions, that don't make any sense. That and the number of litres put into 2 bikes side by side at the same gas station.


Have you ever thought of going on a Bullshit Improvement course.

Don't think I need a course, my bullshit-o-meter seems to be working just fine today


But it's fun and work is slow at the moment...
You too huh?

And look, ^^^ I can make quotes work too!

[dino3310]

Yip... :yes:
leaves me more coin for pipe tobacco :D

Mrs J should have made deal "NO smoking or the beemer goes" before you brought it:eek5:

[JATZ]

Mrs J should have made deal "NO smoking or the beemer goes" before you brought it:eek5:

Bwaaaaahahahaha :rofl: :rofl: and......Mwwwaaaaaaaahahahaha :rofl: ........ahem....

Sorry, it's getting a bit off topic but that's just the way I roll :D

[dino3310]

Sorry, it's getting a bit off topic but that's just the way I roll :D

ahh yes to true..... sorry Mcloedclan


So how do you mod an XR250?

[TINA RAY]

Well I wasn't going to call you that outright, but if that's how you want it..

I've got opinions, that don't make any sense. That and the number of litres put into 2 bikes side by side at the same gas station.


Don't think I need a course, my bullshit-o-meter seems to be working just fine today





OK, we'll call it a draw then.

Now back to the matter in hand....... which was....?:blink:

[neels]

Now back to the matter in hand....... which was....?:blink:
That the OP should flag modding the XR250 and buy a 400. I think.

[NordieBoy]

FWIW my current bike lost a couple of HP when it was fiddled with to run on 91, seems to still go o.k. though :bleh:

You'll gain it back when you fiddle it to run the Termi pipe though :D

[dino3310]

That the OP should flag modding the XR250 and buy a 400. I think.

naaa more fun modding a bike up, if it turned to custard then buy the 400:laugh:

[TINA RAY]

naaa more fun modding a bike up, if it turned to custard then buy the 400:laugh:




Yeah,
........ we learnt the hard way....why shouldn't they !

[Katman]

A hone is usually referred to the quick polish of the bore.

Actually no.

It's a process that produces a roughened cross hatch pattern on the bore for rings to bed in against.

Quite the opposite to a "quick polish".

[dino3310]

Hey mate these are the chains and the shop i got it from, i was telling you about
http://www.trademe.co.nz/motors/motorbikes/parts-for-sale/chains-sprockets/auction-506075297.htm

[NordieBoy]

Hey mate these are the chains and the shop i got it from, i was telling you about
http://www.trademe.co.nz/motors/motorbikes/parts-for-sale/chains-sprockets/auction-506075297.htm

Haven't had much luck with EK chains. I always seem to get really tight links, well before they hit the stretch limits.

[TINA RAY]

Haven't had much luck with EK chains. I always seem to get really tight links, well before they hit the stretch limits.


Do you oil them ?

[dino3310]

Haven't had much luck with EK chains. I always seem to get really tight links, well before they hit the stretch limits.

ive never had anything negative with them, good value for $$$


Do you oil them ?

yeah it helps aye mate

[TINA RAY]

ive never had anything negative with them, good value for $$$



yeah it helps aye mate



JUST LISTEN to ME Deano and she'll be right:Punk: LOL

[NordieBoy]

Do you oil them ?

Used to use a ScottOiler, now it's Shell Advance chain lube before every adv ride or once a week if not adv'ing.

[TINA RAY]

Shell Advance chain lube

What type of lube is it please ?

[NordieBoy]

What type of lube is it please ?

A spray can of Shell Advance Chain Lube.

[TINA RAY]

A spray can of Shell Advance Chain Lube.


Aha.

Liquid? Thin? Thick? Sticky? Greasy?..........get the idea......characteristics...

[ADVGD]

Hi i have a 95 xr 250 jap import and want to no if there are any easy quick mods to Improve it

This article may have some helpful information to getting the outcome you want

http://www.adventureguide.co.nz/articles/12/250/performance-increase-250cc.php

Hope that is of some help

Cheers

Josh

[mcleodclan]

Well I have replaced the steering head bearings.New o ring chain front and rear sproket.semi synthetic oil New filter.new after market air filter .removed the snorkel in the airbox .and drilled three 6mm holes in the baffle and that's it ...goes much better and that's all im doing ....cheers for all your help guys time to go riding...anyone keen

[dino3310]

always keen just not always got the time:no:, keep an eye on the waikato thread or even post up when your heading out, mxnut's out quite a bit...
come dryer weather mate we'll slaughter that thompsons track:Punk:

[merv]

WTF is that KTM ??? A Nordie photoshop Special !!!!

Look at the ''TRIALS UNIVERSAL'' tyres !!!

Hardly a TRAIL/ADV bike eh...:innocent:


That is the new KTM Freeride brother, and there's even an electric powered model the Freeride E

Link here http://www.ktm.com/freeride.html