How to do mods on a '95 XR250?

[Akzle]

How do you hone a head 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

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

21" front wheel, YSS PD valves, Works Performance rear shocks...

and in 2007, DR650 footpegs...


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.

[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.

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