XR250R Mod thread

[rider2371]

Jav- Did you finish re-jetting the XR? Any update?

[Twinrider]

Jav- Did you finish re-jetting the XR? Any update?

He did, I just filmed him yesterday testing it.

[Jav]

[Markw]

He did, I just filmed him yesterday testing it.

Looking good. Much better without the luggage paraphernalia...

[Twinrider]

Looking good. Much better without the luggage paraphernalia...

Says the guy who can't haul a tent and has to seek refuge in a hotel like a girlie man :o

[Markw]

Says the guy who can't haul a tent and has to seek refuge in a hotel like a girlie man :o

Says he who used a backpack instead of his luggage system on the last ride at Chichibu

Never been a fan of loading up off-road bikes with mountains of luggage. Makes the bike handle like crap, difficult to get on and off the bike and top heavy. Don't see the need when I can carry everything I need (food, drink, waterproofs and tools) in a small backpack and keep the weight of the bike to a minimum...

[Jav]

And so said the grumpy old men

[Markw]

On the other hand, this would make lunch breaks and slabbing it back home much more comfortable:

[Markw]

Getting back on topic- Jav, any update on the jetting and post tune dyno results?

[Twinrider]

Says he who used a backpack instead of his luggage system on the last ride at Chichibu

Never been a fan of loading up off-road bikes with mountains of luggage. Makes the bike handle like crap, difficult to get on and off the bike and top heavy. Don't see the need when I can carry everything I need (food, drink, waterproofs and tools) in a small backpack and keep the weight of the bike to a minimum...

You're confusing day touring with overnight rindo touring camp trips. Riding and sleeping in the woods, Special Forces style with knives, meat and fire....

Anyhow, it's high time we got back on topic!

[Markw]

You're confusing day touring with overnight rindo touring camp trips. Riding and sleeping in the woods, Special Forces style with knives, meat and fire....

OK, I understand now. Something like this would be an ideal setup. Just need to slip some MT21s on:

[haildamage]

this is my new system. will try it out for the June 7th rindo tour and camp

http://www.altrider.com/altrider-hem...lebag/pid/1467

[Twinrider]

OK, I understand now. Something like this would be an ideal setup. Just need to slip some MT21s on:

That's not bad a two-up overnighter. But for a 10 day Hokkaido rindo tour this would be better.

[Markw]

this is my new system. will try it out for the June 7th rindo tour and camp

Is that a parachute on the back???

[Japanviking]

this is my new system. will try it out for the June 7th rindo tour and camp

http://www.altrider.com/altrider-hem...lebag/pid/1467

Wow never seen this part of Shikoku before!

[Jav]

Order a carb kit from the US and they sent the wrong kit!!!!!!!!!!!!!!!!! GRRRRRRRRRRRRRRR basdits.
So drilled out the main jet from 1.2mm to 1.5mm as i was bored and somewhat annoyed, having pulled
the carb.

On the dyno made no more power so still at 19.xxhp but when the charts are overlaid, the bike makes the
power much quicker ie at earlier rpm. So across the rpm range the bike makes about 2 to 2.5hp more than it did stock, up to
the same peak ( earlier in the rpm ). It feel it too, as the suspension compresses quicker on the dyno.
The drilled jet is way too rich above 4,000rpm so i cam seeing 10:1 ( mad ) and it is killing the top end.
With the correct jet, expect to see between 22hp and 23hp.

Will post dyno chart on the weekend. Now just need to order correct jets.

XR250R carb removal sucks as it is further back in the frame that on a Djebel or Serow.

[Markw]

That's a PITA :-(

[DDT Rider]

Sorry to hear it...I'm sure it will am be worth it in the end.

[Twinrider]

Order a carb kit from the US and they sent the wrong kit!!!!!!!!!!!!!!!!! GRRRRRRRRRRRRRRR basdits.
So drilled out the main jet from 1.2mm to 1.5mm as i was bored and somewhat annoyed, having pulled
the carb.

On the dyno made no more power so still at 19.xxhp but when the charts are overlaid, the bike makes the
power much quicker ie at earlier rpm. So across the rpm range the bike makes about 2 to 2.5hp more than it did stock, up to
the same peak ( earlier in the rpm ). It feel it too, as the suspension compresses quicker on the dyno.
The drilled jet is way too rich above 4,000rpm so i cam seeing 10:1 ( mad ) and it is killing the top end.
With the correct jet, expect to see between 22hp and 23hp.

Will post dyno chart on the weekend. Now just need to order correct jets.

XR250R carb removal sucks as it is further back in the frame that on a Djebel or Serow.

Hope you're still planning on joining tomorrow, sounds like it's making enough power to be fun.

[Jav]

Picked up an FCR33 so will fit that next week and start the tuning process.