RM 2 stroke set up data base

[djsather]

RM Year: 2005

RM engine size:265

Carb mods(PowerNow, Wings, JDJetting, ect..): stock

Air Filter (stock?)Twin Air

Main jet: stock

Pilot Jet: stock

Needle model/Clip position: stock

Air screw:1-1 3/4 (depending on temp)

Altitude where you ride: 700'-1200'

Temps:40-100F

Reeds: Vforce3

Pipe/silencer:ProCircuit Platinum

Head mod:Eric Gorr

Other mods(FWW, ect.):10oz FWW, IBooster,Eric Gorr Porting for More Power everywhere

Type of fuel:1/2 91(non ethynol) 1/2 110 leaded race fuel - equals 100.5 octane

Type of Premix/Ratio:Silkolene Comp2 primix 32:1

Type of Trans oil:Silkolene Medium gear oil

Type of riding(MX, trails/technical, desert ect):MX, Harescrambles, trails

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): lug in the woods, open on the track

Rear Tire:dunlop 739 (soon to be bridgstone 404)

Gearing (sprokets):stock

Degree of satisfaction: 9 still getting used to riding a 2 stroke but very happy overall

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots:

none, leaves the rear fender slightly smokey color but wipes right off.

Notes:Great bike for the price i couldn't have done better. No real complaints with any mod it has either.

[Nick11.]

RM Year: 2006 big wheel

RM engine size:105

Carb mods(PowerNow, Wings, JDJetting, ect..): none

Air Filter (stock?)twinair

Main jet: 135

Pilot Jet: 45

Needle model/Clip position: 2

Air screw:2 out

Altitude where you ride: 2000-3500

Temps:45-110

Reeds: vforce 3

Pipe/silencer: pc platinum and r304

Head mod:milled

Other mods(FWW, ect.):barnett clutch basket fox shox enzo front suspension big bore 46to52mm

Type of fuel:100 octane from rebel

Type of Premix/Ratio:32-1 maxima

Type of Trans oil:silkolene light

Type of riding(MX, trails/technical, desert ect):mx and desert

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): wide open

Rear Tire:bridge stone m404

Gearing (sprokets):13-47

Degree of satisfaction: 9

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots:none

[joel87]

RM Year: 2003

RM engine size: 249

Carb mods(PowerNow, Wings, JDJetting, ect..): none

Air Filter (stock?) Maxima pro filter or uni depends on whats clean and ready

Main jet: 168

Pilot Jet: 45

Needle model/Clip position: 2nd

Air screw: 1-3/4

Altitude where you ride: Michigan Im not sure

Temps: 50-100

Reeds: stock

Pipe/silencer: P/C platnium for an '04 and stock silencer

Head mod: '04 head no mods

Other mods(FWW, ect.): reed spacer, and extra exhaust shims

Type of fuel: 90 octane "recreational" fuel no ethanol

Type of Premix/Ratio: golden spectro 32-1

Type of Trans oil: rotella 15-40

Type of riding(MX, trails/technical, desert ect): a little of everything

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): lugger in the trails and wide open when I can

Rear Tire: CST Surge S

Gearing (sprokets): stock gearing-rental sprockets

Degree of satisfaction: 7

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: 3

Notes: I like the bike, but I hate the seat, and it's a little tricky to jet.

[rmz450-Lunatic]

RM Year:2001

RM engine size:250

Carb mods(PowerNow, Wings, JDJetting, ect..): none

Air Filter (stock?)twin air

Main jet: idk

Pilot Jet: idk

Needle model/Clip position:idk

Air screw:1 and half

Altitude where you ride: 0-750 ft.

Temps:20-90F

Reeds: stock

Pipe/silencer: pro cicuit plat. pro cirtuit shorty

Head mod:none

Other mods(FWW, ect.): factory connection suspenstion, arc levers, twin wall bars

Type of fuel:93 pump

Type of Premix/Ratio:32 to 1 with amsoil interceptor

Type of Trans oil: bel ray gear saver

Type of riding(MX, trails/technical, desert ect): everything except desrt mouitain

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): mid to top wide open

Rear Tire:dunlop

Gearing (sprokets): stock

Degree of satisfaction: 10 out a 10

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: none ? LOVE AMSOIL

[vamped400]

RM Year: 2004

RM engine size: 125

Carb mods(PowerNow, Wings, JDJetting, ect..): stock

Air Filter (stock?) moose racing

Main jet: 380

Pilot Jet: 45

Needle model/Clip position: 3rd

Air screw: 1.5

Altitude where you ride:200-500ft

Temps: 40-80f

Reeds: boyesen

Pipe/silencer: doma

Head mod: stock

Other mods(FWW, ect.): stock

Type of fuel: 91 pump

Type of Premix/Ratio: 32/1 but might switch to 40/1

Type of Trans oil: maxima 75wt

Type of riding(MX, trails/technical, desert ect): trails only

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): lugger-mid

Rear Tire: michelin AC10

Gearing (sprokets): 13t front 50t rear

Degree of satisfaction: 8.5

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: 3

Notes: jetting is a little fat, still have some fine tuning to do. but love the bike!

[sam hain]

RM Year: 2006

RM engine size: 250

Carb mods(PowerNow, Wings, JDJetting, ect..): none

Air Filter (stock?) no toil

Main jet: 170

Pilot Jet: 48

Needle model/Clip position: necj 3

Air screw: 1.5

Altitude where you ride: <1000ft

Temps: 30-100

Reeds: boyssen rad valve

Pipe/silencer: PC works/304 shorty

Head mod: none

Other mods(FWW, ect.): Ironman rear sprocket, race tech gold valves F&R, woods revalve, pro taper bars, TM designs chain slider, Boyssen clutch and ign covers, skid plate.

Type of fuel: VP C12

Type of Premix/Ratio: Amsoil 50:1

Type of Trans oil: Belray

Type of riding(MX, trails/technical, desert ect): hare scramble/enduro's

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): Mid to top

Rear Tire: varies on what's on sale, normally michelin or pirelli's. hate dunlops!

Gearing (sprokets): 13/50

Degree of satisfaction: 8

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: 2

[zukiguy88]

RM Year: 1999

RM engine size: 125

Carb mods(PowerNow, Wings, JDJetting, ect..): NONE

Air Filter (stock?) Twin-Air

Main jet: 180

Pilot Jet: 52

Needle model/Clip position: stock/2nd

Air screw: 1.5

Altitude where you ride: 20' - 300'

Temps:40* - 90*

Reeds: VForce 3

Pipe/silencer: Pro-Circuit Platinum/FMF Pro-core II shorty

Head mod: none

Other mods(FWW, ect.):

Type of fuel: 93 premium

Type of Premix/Ratio: Lucas premix/40:1

Type of Trans oil: 10w40

Type of riding(MX, trails/technical, desert ect): MX, Trails

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): all the above

Rear Tire: michelin cross comp s12

Gearing (sprockets): JT -12/356 - 52 sprockets

Degree of satisfaction: 9.5 out of 10

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots:2

Notes: great bike, runs a little fat in colder weather but just too lazy to rejet it!!

Edited December 30, 2011 by zukiguy88

[Dirtymutt9]

****** just did a bunch of work to the engine thought id make a new post so people can have a stock baseline for 99 rm's***********

RM Year: [/font]1999

]RM engine size:[/font]250

Carb mods(PowerNow, Wings, JDJetting, ect..): [/font]none

Filter (stock?)[/font]twin air

Main jet: [/font]160

Pilot Jet: [/font]42

Needle model/Clip position: [/font]2nd clip n1eg

Air screw:[/font]usually 1 1/2 out

Altitude where you ride: [/font]from sea level to 3k

emps:[/font]southern california

Reeds: [/font]V force 2

]Pipe/silencer:[/font]Current- bills works pipe Bills silencer

Head mod:[/font]Boyko Racing for 91 pump

Other mods(FWW, ect.): [/font]dyna f/s ignition on stock. Ignition retarded 1-2 degrees. Full cylinder port job by Boyko Racing. Power hits smoothly and controllably. power increase was immense! The bike has so much torque it feels like a 4 stroke. Also has been fully revalved by Pro-Valve suspension in costa mesa for an intermediate MX rider @ 165 lbs

]Type of fuel:[/font]pump

Type of Premix/Ratio:[/font]32:1 Motul 800 or 710

Type of Trans oil:[/font]15/40wt diesel oil or type f i like both

[Type of riding(MX, trails/technical, desert ect):[/font]EVERYTHING been racing mx lots lately

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): [/font]Everywhere but mostly Top end. new porting allows me to be a bit lazier

Rear Tire:110 michelin s12[/font]

Gearing (sprokets):[/font]stock 13/48

]Degree of satisfaction: 9[/font].5

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: none [/font]

Note blew up the tranny recently, time to hit ebay[/font]

Edited April 23, 2012 by Dirtymutt9

[tribalbc]

After my rebuild and mods this winter I have my bike tuned now to give some new specs. Basically changes were the Vortex ignition, Phathead with higher compression, retarded timing and heavier crank.

RM Year: 2003

RM engine size: 250

Carb mods(PowerNow, Wings, JDJetting, ect..): none

Air Filter (stock?) Uni filter

Main jet: 178

Pilot Jet: 45

Needle model/Clip position: N8RH 3rd clip

Air screw: 2-2.5

Altitude where you ride: 0- 2500ft

Temps: 70's

Reeds: Vforce 3

Pipe/silencer: 3mm exhaust spacer, Gnarly pipe, PC304 silencer

Head mod: Phathead running 1 point higher compression.

Other mods(FWW, ect.): 10 oz Stealhy FWW, 04 crank (heavier), Vortex ignition, Hinson clutch

Type of fuel: 50/50 Avgas 100LL and 91 no ethanol pump

Type of Premix/Ratio: 25:1 Amsoil Interceptor

Type of Trans oil: 10w40

Type of riding(MX, trails/technical, desert ect): Mix of woods racing and MX

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): Lug in the tight ugly stuff, wide open in the open stuff and MX track

Rear Tire: 110/90-19

Gearing (sprokets): 13/51

Degree of satisfaction: 95% - doesn't start as easy as I would like sometimes (first kick hot, third cold is were I'd like to be, can take up to 3 hot, cold is usually there)

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: none

Notes: Other mods

Timing slightly retarded

PV preload backed off 1/8 of a turn.

My dream bike. With the Vortex ignition this bike is a raving beast on the MX track, but with a flick of a switch she becomes a KTM kitten in the nasty stuff. Higher compression gives lots more grunt of the bottom and with my timing slightly retarded I still have strong top end. I run through the gears really fast now with the increased power but I still like to keep the 51 tooth rear sprocket for the ugly woods. I should probably run a 49-48 at the track.

[Doug Fugly]

RM Year: '03

RM engine size: 250

Carb mods(PowerNow, Wings, JDJetting, ect..): JD

Air Filter (stock?) Uni

Main jet: 165

Pilot Jet: 40

Needle model/Clip position: JD Red... 1 clip leaner than recommended

Air screw: 1-2

Altitude where you ride: +1500

Temps: jetted for now... 80-100F

Reeds: V-Force

Pipe/silencer: stock pipe, FMF Q

Head mod: Varner Motorsports Low-end head and cylinder work

Other mods(FWW, ect.): 12 oz fww, Moose reed spacer, Hinson basket, Rekluse 2.0, Rekluse frictions, WER susp revalve

Type of fuel: 93 octane

Type of Premix/Ratio: Maxima SuperM @ 40:1

Type of Trans oil: Auto ATF type F

Type of riding(MX, trails/technical, desert ect): Hunting for nasty single track

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): Mainly a short-shifter

Rear Tire: B 404 or Michelin MH3

Gearing (sprokets): +1 on rear

Degree of satisfaction: 90% (motor still abrupt in the rocks)

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: very little

Notes: Held out on an autoclutch forever, but I'm old now... Rekluse 2.0... nice!

Edited May 23, 2012 by 2-Strokes 4-ever

[2006rm85l]

RM Year: 2005

RM engine size:125

Carb mods(PowerNow, Wings, JDJetting, ect..):none

Air Filter (stock?)HiFLoFiltro

Main jet: not sure

Pilot Jet: not sure

Needle model/Clip position: Stock needle

Air screw:not sure

Altitude where you ride: less than 1000ft

Temps: 60-90

Reeds: stock

Pipe/silencer:stock

Head mod: stock new top end

Other mods(FWW, ect.): grips graphics seat cover

Type of fuel: 93 Octane

Type of Premix/Ratio: Valvoline two stroke mix 32:1

Type of Trans oil: rotwella 80w/85

Type of riding(MX, trails/technical, desert ect): Trails, Mx

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open) EVERYWHERE

Rear Tire: 18" Pirellk

Gearing (sprokets): not sure but back sprocket is a renthal rm250 black sprocket

Degree of satisfaction: VERY good

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: VERY LITTLE

Notes: has Giles racing suspension! Really nice um seat cover is new graphics are new top end is new new tires new grips newer plastics and renthal bars also the stator and clutch cover are painted black and it's nice

[75mx125]

RM Year: 2004

RM engine size: 85

Carb mods(PowerNow, Wings, JDJetting, ect..): Keihn PWK28

Air Filter (stock?) Uni

Main jet: 118

Pilot Jet: 35

Needle model/Clip position: Stock, 3rd

Air screw: 1.5 out

Altitude where you ride: 1500 ft

Temps: 80-105f

Reeds: MotoTassinari VForce3

Pipe/silencer: FMF SST, Shorty

Head mod: None

Other mods(FWW, ect.): PR2 3mm Long Rod, Stuffed cases, Top End Porting

Type of fuel: VP110 Octane Sometimes mixed 50/50 with 91 octane pump gas.

Type of Premix/Ratio: 28:1ish

Type of Trans oil: Maxima MTL 80WT.

Type of riding(MX, trails/technical, desert ect):MX

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): Top End Wide Open

Rear Tire: Dunlop MX51

Gearing (sprokets): 14:50

Degree of satisfaction: Couldn't be more happy.

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: Very little, or none. Depends on humidity.

Notes: This setup pulls on a Stock KX100. Legal to race in 85 stocker class.

[jonnyukon]

RM Year: 2000

RM engine size:250

Carb mods: replace stock carb with Air Striker Quad vent 38mm, no choke adjustment no power jet.

Air Filter: stock filter. Stock box

Main jet: 168

Pilot Jet: 42

Needle model/Clip position: N3WJ one step richer than the stock N3WK

Air screw: 1 3/4

Altitude where you ride: 400-1000

Temps:70-85

Reeds: stock cage, boyesen power reeds

Pipe/silencer: FMF Fatty , Pro Circuit nature friendly / spark arrestor

Head mod: stock

Other mods(FWW, ect.): stealthy 10oz

Type of fuel: pump 93

Type of Premix/Ratio:Klotz super techniplate / 32:1

Type of Trans oil: Honda 80/85 trans

Type of riding: trails, single track

Where in the powerband do you ride: all Rpm's

Rear Tire: maxxas soft to interm

Gearing : 13-51

Degree of satisfaction: 10 outta 10!!

And finally: how much spooge: little to medium... A would rather clean alil spooge instead a cylinder and bottom end.

Notes:

[OldMechanik]

RM Year: 2003

RM engine size: stock 250

Carb mods(PowerNow, Wings, JDJetting, ect..): JD #7 slide

Air Filter (stock?) No toil

Main jet: 162

Pilot Jet: 40

Needle model/Clip position: NECJ clip at the top

Air screw: 1.5-2

Altitude where you ride: sea level to +-200'

Temps: 50F-100F/ high humidity

Reeds: stock

Pipe/silencer: FMF Fatty/Power Core

Head mod: stock

Other mods(FWW, ect.): None

Type of fuel: Pump 93.

Type of Premix/Ratio: Red Line 32:1

Type of Trans oil: Currently ATF, but exploring other options due to lurching problems

Type of riding(MX, trails/technical, desert ect): Eastern woods trails, sand, MX/SX

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): I lug it pretty good on the trails, but will run it hard on the bigger tracks. I'm really not a revver

Rear Tire: 110/90-19 MX51 at the moment

Gearing (sprokets): 13/49 stock

Degree of satisfaction: 8/10

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: It was a 4+ when I got it. With jetting changes it's closer to 2. I prefer none!

Notes: Love this bike....bought it with apperantly low hours, but poor care by the last owner. Hate the carb. Love the turning and power. Gearing seems weird.

Edited January 18, 2013 by OldMechanik

[dtha70]

RM Year: 2004

RM engine size: 250

Carb mods(PowerNow, Wings, JDJetting, ect..): none

Air Filter (stock?) loudmouth system

Main jet: 162

Pilot Jet: 48

Needle model/Clip position: stock, 2nd from top

Air screw: 2 turns out

Altitude where you ride: 1000 ft

Temps: 30-70 winter, 70-110 summer

Reeds: boyesen RAD valve with a bit of grinding on the housing to better match it to the cases, and splitters sharpened

Pipe/silencer: FMF factory fatty/titanium 2

Head mod:milled to 1mm squish, stock profile

Other mods(FWW, ect.): ported&polished, timing advanced 1 degree

Type of fuel: 50/50 100LL AVGAS and 91 PUMP

Type of Premix/Ratio: Motul 800 @ 32:1

Type of Trans oil: ATF

Type of riding(MX, trails/technical, desert ect): intermediate MX and Desert

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): wide open

Rear Tire: duro intermediate (from RMATVMC)

Gearing (sprokets): 13/50

Degree of satisfaction: 90%

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: just a few little specks on the fender every now and then. a tiny bit fat, but not enough to hinder performance

Notes: bike will be getting torn down in the next week to get frame powdercoated, new triple clamps, new wheels, and a full engine rebuild. at that point, ill be 100% satisfied.

[mbogosia]

Year: 1989

RM engine size: 250

Carb mods(PowerNow, Wings, JDJetting, ect..): none

Air Filter: uni

Main jet: 380

Pilot Jet: 55

Needle model/Clip position: stock, 3rd from top

Air screw: 1.5 turns out

Altitude where you ride: 500ft

Temps: 30-70 winter, 70-100 summer

Reeds: stock

Pipe/silencer: FMF silencer

Head mod:none

Other mods: flywheel weight, facrory connection suspension

Type of fuel: 93 pUMP

Type of Premix/Ratio: lucas @ 32:1

Type of Trans oil: honda 10w40

Type of riding(MX, trails/technical, desert ect): trails

Gearing (sprokets):

Degree of satisfaction: 90%

And finally: how much spooge 1) none

[2stroketoker]

RM Year: 2002

RM engine size:125

Carb mods(PowerNow, Wings, JDJetting, ect..): stock

Air Filter (stock?)Twin Air

Main jet: stock

Pilot Jet: stock

Needle model/Clip position: stock

Air screw: stock

Altitude where you ride: 110-160

Temps:40-100F

Reeds: stock

Pipe/silencer:fmf sst gold series

Head mod: n/a

Other mods(FWW, ect.): hot rods crank, wiseco prolite piston (soon to get barnett clutch baskett and probably tusk clutch kit)

Type of fuel: 32:1

Type of Premix/Ratio: t4 mx

Type of Trans oil: 10w40 4stroke racing oil (rated for wet clutches)

Type of riding(MX, trails/technical, desert ect): Technical trail

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): WTFO clutch poppin'

Rear Tire: dry rotted NEED NEW ONES

Gearing (sprokets): 12/48

Degree of satisfaction: 10 i love 2strokes always have since my first one 8 years ago

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots:

none, build-up around the edges of pipe comes out but wipes off easily

Notes: Had to do total rebuild of this thing after i got it, 3 gears on the countershaft, hot rods crank, and wiseco prolite piston. traded from a 98 CR125. SO glad i did, even though i kinda got screwed over, because the power difference and response from the 98 CR to the 02 RM was notice-able to say the least!! I WHEELIED IT 1ST DAY 3RD gear thinkin it was like my CR! AND ATE IT BIG TIME bent the handle bars and tore my leg up from my ankle to my hip. needless to say iwas impressed!

[crider400]

RM Year: 2006

RM engine size: 250

Carb mods(PowerNow, Wings, JDJetting, ect..): stock

Air Filter- UNI

Main jet: 175

Pilot Jet: 50

Needle model/Clip position: Stock

Air screw: 1.5

Altitude where you ride:2000-2500

Temps: 55-70

Reeds: Stock

Pipe/silencer: Stock

Head mod: stock

Other mods(FWW, ect.): stock

Type of fuel: 2:2 110 leaded and 87- 98.5 OCT

Type of Premix/Ratio: 30:1 YAMALUBE 2R

Type of Trans oil: Motul 40w

Type of riding(MX, trails/technical, desert ect): MX, DESERT

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): Mid to top

Rear Tire: New Dunlop D756

Gearing (sprokets): 13t front 50t rear

Degree of satisfaction: 10-love this bike, especially over my 05' yz250

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: 1- none

Notes: Boil over so put on a CVS 2.0 cap

[houdini23]

RM Year: 2003

RM engine size:250

Carb mods(PowerNow, Wings, JDJetting, ect..): Stock

Air Filter (stock?) Stock

Main jet: 165

Pilot Jet: 45

Needle model/Clip position: Stock Needle - Position 2

Air screw: 1.5 turns

Altitude where you ride: 800

Temps:50-100F

Reeds: vForce

Pipe/silencer: Pro Circuit 304

Head mod: Stock

Other mods(FWW, ect.): Weisco Top, Bottom, Clutch

Type of fuel: 93 octane

Type of Premix/Ratio: Amsoil 45:1

Type of Trans oil: ATF

Type of riding(MX, trails/technical, desert ect): Anywhere I can ride.

Where in the powerband do you ride (Lugger/Bottom End, or Wide Open - Top End): All over the place.

Rear Tire: Michelin Starcross

Gearing (sprokets):13/53

Degree of satisfaction: 100% It' more than I can handle

And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: Very little to None

Edited January 28, 2013 by houdini23

[argclh6670]

rmx yr. 1995:

Engine size: 250cc

Carb mods: 38mm PWK stock

Air Filter: No toil

MJ: 168

PJ: 50

Needle: stock, Middle

AS: 1.5 turns

Elev: 0-1000

Temp: 40-65

Reeds: V-force

Silencer: FMF Turbine core

Head: stock

Other Mods: None

Fuel: 92

Premix: Redline Full Syn. 32:1

Trans. fluid: Rottela T

Type of Riding: Trails/ HS

Where in Powerband: Bottom/mid some top

tires: not sure yet

Gearing: 13/51

Satisfaction: 100%

Spooge: Very, VERY little at tip.

Edited January 28, 2013 by argclh6670