ATV Powertrain [Archive] - Page 42

octane booster (7 replies)
Is This Normal? (2 replies)
no jettin (1 replies)
What would you do? (10 replies)
Rings or valve seals? (2 replies)
Very weird noise coming from 426. (5 replies)
400ex not getting any spark?? (0 replies)
leaded vs. unleaded (2 replies)
'99 EX questions (2 replies)
changing fuel, jetting help (0 replies)
sprocket set up (16 replies)
350x Valve Adustments and spark plug gap (1 replies)
Electrical Problem...help quick (9 replies)
bog with HMF at 1/4 throttle... (1 replies)
440ex piston id (4 replies)
whos got tusk clutch kits w/ springs in stock (16 replies)
Chain (2 replies)
Putgting a New chain On (1 replies)
quick jetting question (10 replies)
I wish I had a kick start - electrical problem (2 replies)
K&N or UNI or TWIN AIR (60 replies)
Jet Kit or No Jet Kit (14 replies)
400ex not getting any gas whats wrong? (8 replies)
Break In On '05 450r Recomendation (3 replies)
Stage 2 HotCam Jetting (5 replies)
new 450r????? sprockets?? (4 replies)
2003 Honda 250EX Upgrades (11 replies)
Does Curtis Sparks lighten flywheels? (4 replies)
Timing advanced.............wont start (3 replies)
250R cuts out WOT (5 replies)
mobil 1 redcap (2 replies)
Tap start button and nothing? Please HELP!!! (3 replies)
250X question? (7 replies)
300ex w/ 400ex carb jetting ???? (1 replies)
400ex top end help (6 replies)
White Brothers Power Filter? (6 replies)
k&n question (3 replies)
Race fuels, race gas topic (24 replies)
JE 330cc PISTON FOR 300ex ? (4 replies)
pipe ??? (3 replies)
rear hub castle nut ? (1 replies)
Best rev box? (0 replies)
Athena 83mm bore for YZ250f (1 replies)
new head (1 replies)
rings fried (9 replies)
Stage1 Stage2 hotcam? (4 replies)
Honda Recon Problem (3 replies)
i changed my axel (3 replies)
400ex rebuild (1 replies)
drilling holes in air box cover (8 replies)
helocoil question for 250X (7 replies)
Good torque wrench for under $100.00? (33 replies)
Why Am I Loosing Throttle Response! (7 replies)
ive made my decision (14 replies)
oil cooler (2 replies)
400ex needs more high rpm power (6 replies)
What are the main and pilot jet increments? (10 replies)
Soft Carb Screw Replacement (8 replies)
250 jetting PITA (1 replies)
BIG BIG BIG PROLEM NEED HELP. Swingarm bolt stuck in motor. (17 replies)
How to jet a 250ex (1 replies)
Jets!! (1 replies)
How about Yamahas new quads (4 replies)
new 300 ex 10 hour dealer check up (9 replies)
400ex rebuild need to knows (2 replies)
40EX airbox lid fits 300EX? (1 replies)
question about fuel injection (16 replies)
300 4x4 oil leak (1 replies)
Gearing (05 400ex) (3 replies)
Gearing for 300ex? (2 replies)
How do I get engine clean (36 replies)
taking apart HMF (3 replies)
Ran good all day, then... (6 replies)
i gotta ? (6 replies)
My 400EX totally died- what happened? (10 replies)
help me carb problems (2 replies)
which cam (4 replies)
Pilot Jet (8 replies)
No Throttle Response (7 replies)
best exhaust 4 300 ex (7 replies)
old 300 ex faster than new one (13 replies)
What are TC/Supertrapp silencers made of? (2 replies)
Rejet or wait? (9 replies)
Post Pics of Lrd,hmf, and sparks EXHUASTs (12 replies)
400ex Smoke! (8 replies)
honda 450r (6 replies)
Will it work???? (2 replies)
top end help (6 replies)
removing choke (4 replies)
how hard is it to change the rear seal? (4 replies)
300ex big bore kits (7 replies)
is this a good idea (7 replies)
best spark plug (2 replies)
450 motor (1 replies)
E-Series (6 replies)
Hmf Pipe (0 replies)
Help QUICK!!! Engine wont start... (1 replies)
Need a YFZ owner to look at their carb (1 replies)
Hasn't been ran in a while... (1 replies)
400ex bored .100 over? (11 replies)
What to do to carburator for power (9 replies)
H/D Studs - Where? 400ex (3 replies)
1/8 - 1/4 throttle (1 replies)
need more power? (3 replies)
Powder Coat Red Muffler-450r (5 replies)
HELP QUICK!!! race soon!!! (4 replies)
Addl. 440ex mods? (3 replies)
rejet .050 over 400ex??? (6 replies)
250r/300ex hybrid? (13 replies)
wb header to HMF slip 300ex (1 replies)
Break In (4 replies)
400ex jetting (7 replies)
250ex power (0 replies)
why is this happening (1 replies)
Rev Limiter (1 replies)
Oil Seals? (5 replies)
Flywheel bolts (3 replies)
K&n (4 replies)
predator 500 best pipe? (4 replies)
Honda Racing Cam (2 replies)
HELP on timing my cams... (2 replies)
HELP on timing my cams... (7 replies)
Up sizing a carb (6 replies)
400 Ex Crackling (4 replies)
Is rejetting a carb hard to do (8 replies)
NEED HELP - no power, bike is dead!! (9 replies)
Tired engine (3 replies)
400ex jetting help (6 replies)
Where To Get Bearing (3 replies)
boost bottle (6 replies)
matting pipes? (10 replies)
400ex Spark Plug (4 replies)
400ex jetting with an HMF full system (5 replies)
Hotcams Stage2 Lash (2 replies)
Pinging (25 replies)
matting pipes (0 replies)
hmf or fmf? (1 replies)
polished frame???? (15 replies)
400ex plug (0 replies)
Opinions on why my 400ex smokes?? (12 replies)
Where do you buy your jets? (14 replies)
Magura clutch (13 replies)
what luck. (14 replies)
can i reuse spark plug? (12 replies)
how much horespower stock does a 250r have compared to a 400ex (3 replies)
pipes? (7 replies)
installing masterlink (14 replies)
Need Some Help With Jetting! (7 replies)
jetting question(i think) (4 replies)
Edelbrock spares (2 replies)
2 stroke pull start problem (6 replies)
416 or 426 (4 replies)
weird,am i missing sumthin (4 replies)
00 300ex mods? what to buy? (9 replies)
drilling holes in muffler increasing power? (22 replies)
Rejetting after 426? (4 replies)
Bogging down (0 replies)
crf450 conversion? (1 replies)
Super Trapp? (2 replies)
300EX boggs at 1/2 throttle (5 replies)
Im an idiot (8 replies)
what should i get (2 replies)
how fast... (2 replies)
dasa (2 replies)
best exhaust for... (4 replies)
rebuilding 400ex engine (timing help) (1 replies)
Valves (13 replies)
what should i get next??? (6 replies)
stripped oil bolt? (0 replies)
Header pipe major situation (4 replies)
carb question (2 replies)
Big valves for 300ex (2 replies)
shifting with/without clutch (26 replies)
idle adjustment on 2001 400ex (0 replies)
hotcams? (8 replies)
best place to buy an HMF (16 replies)
clean the carburator (2 replies)
300ex crank lhas a littile side to side is (3 replies)
choke?????? (0 replies)
Quad isn't running right (9 replies)
Must look need help (2 replies)
Bigger Sleeve (5 replies)
So if I was jetted a tad rich when it was cold, now that it's warm out i'm very rich? (10 replies)
Engine Help, Black buildup (7 replies)
05 250ex axle (6 replies)
Gasket question. (1 replies)
Question about head decking?? (3 replies)
HELP.....Got $100 (12 replies)
full yoshi rs3 (3 replies)
scorpion exhaust (2 replies)
How to install a lonestar axle (1 replies)
300ex one way bearing clutch (1 replies)
Help Please! (2 replies)
Emergency! (0 replies)
slip-on vs. full system (2 replies)
400ex top speed (25 replies)
Quick Clutch Question (1 replies)
YZ440 hybrid?? (29 replies)
Polaris Ranger Engine (2 replies)
solenoid (2 replies)
clear plastic intake tube (1 replies)
stroker kit for 2 stroke??? (1 replies)
500$ (8 replies)
fastest man on almost stock motor? (6 replies)
Lectron carb?? (3 replies)
compression...sucks not blows? (5 replies)
kick start (4 replies)
Motor mounts (1 replies)
300ex hybrid? (12 replies)
Shifter Question (1 replies)
DG exhaust for 300ex are they good (9 replies)
HELP, 400ex engine problem (5 replies)
Help Me Out Real Quick! (8 replies)
rear-end (4 replies)
UNI filter (8 replies)
5th gear problem (5 replies)
more power (4 replies)
hmf ? (2 replies)
trx 450 carburation (1 replies)
oil in carb. Help (3 replies)
hmf exhaust (14 replies)
Hmf??? (5 replies)
valve clearance with aftermarket cam/springs/valves... (13 replies)
HMF full Jetting w/o lid (6 replies)
popping at 1/2 throttle (3 replies)
whites brothers??? (4 replies)
450r jetting (0 replies)
YZ Mixture??? (3 replies)
Web sites (3 replies)
cash, no big deal (5 replies)
banshee jetting (10 replies)
e-series discs (0 replies)
426 kit... (3 replies)
Im kinda scared now, 400 motor (9 replies)
What do you think's wrong? (4 replies)
How Bad Is This? (15 replies)
dead sprocket hub (5 replies)
Airbox (10 replies)
how do you know when you blew a head gasket? (2 replies)
rod strength (3 replies)
Quit and won't start? (3 replies)
Top dead center??? 400ex (4 replies)
K&n (3 replies)
SILENCER?????? please help (3 replies)
Engine people help!!! (13 replies)
Cdi (2 replies)
300ex Pistons nd combustion chamber (0 replies)
400ex wont run right (4 replies)
Compression Tester? (2 replies)
Chain tightening problem with hybrid (8 replies)