ATV Powertrain [Archive] - Page 106

Transmission problems?? (3 replies)
Cost to make my 400 a 440? (14 replies)
how's this sound??? (2 replies)
do I need a himson basket? (1 replies)
New HMF on Z400 (3 replies)
87 Zilla chain tightening help!!! (7 replies)
UNi Jetting??? (5 replies)
White Bros E Series Pipe (13 replies)
choke removal ?????? (8 replies)
Anything else before I begin? (5 replies)
kick start (15 replies)
aftermarket rev limiters (9 replies)
Did anyone read the GP Thunder exhaust shootout? (11 replies)
chrome/coating header? (1 replies)
tricksters verticle walk (5 replies)
street legal quad! (1 replies)
adjusted my valves.... sort of (10 replies)
new t-4 picture (3 replies)
Red hot header pipes on the 440 (7 replies)
Gasohol??? (5 replies)
What grease for cam? (7 replies)
Dyno-jet??? (4 replies)
sparks modded air box lid, anyone??? (2 replies)
Air Scoops? (14 replies)
Engine oil? (5 replies)
Just got done putten her together! (4 replies)
K&N vs. UNI (19 replies)
Need Help! (22 replies)
ChadEXer questions (9 replies)
Carb recomendation (3 replies)
HELP Chain keeps coming loose (6 replies)
Rebuilding this 440-need advise please. (6 replies)
Is Cometic XR400 head gasket same as Honda? (11 replies)
When it comes to jetting... (7 replies)
Would this work out right? (4 replies)
Rev box ?? (6 replies)
clutch hub removal on a 250x (5 replies)
High Rev CDI on this engine? (3 replies)
Best jetting setup for my 400ex? (5 replies)
wont start good (20 replies)
probs with the 416, jetting? (6 replies)
416 to 440? (0 replies)
Ims 440 (4 replies)
Clutch install on 250 x (5 replies)
backfiring when letting off the throttle (10 replies)
will synthetic oil slip clutches worst than normal oil ? (10 replies)
exhaust (3 replies)
jetting (2 replies)
backfire (11 replies)
Broken Case Saver Bolt (5 replies)
350x motor in 300ex frame (8 replies)
Could it be my axle bearing? (10 replies)
WOW, my HMF rips! (7 replies)
Help Installing my Sparks Igntion Key? (3 replies)
cylinder head polishing (internal) (3 replies)
my coming 400ex (3 replies)
To anybody that is going to put an aftermarket header on... (0 replies)
Exhaust question (4 replies)
is a 14 tooth front sprocket worth getting, pleasehelp? (16 replies)
HMF Slip on pipe owners i need your help (7 replies)
Stroker Engines? (5 replies)
250R from 250X (21 replies)
Curtis Sparks X-6? (6 replies)
best place to buy sparks exhaust? (1 replies)
carb adjustment (1 replies)
Crome Exhaust other than LRD??? (1 replies)
I got the Bomb! (3 replies)
Filter question (5 replies)
stainless steel or ceramic for sparks x-6? (6 replies)
I Got It!!! (2 replies)
ep cylinder (0 replies)
300EX gearing (3 replies)
350x carb on 250x? (2 replies)
39 FCR & Exhaust? (10 replies)
Dyno Jet or Dial-a-Jet (5 replies)
pipe on ebay? (2 replies)
Best Big Bore Kit for 400EX (15 replies)
white bros jettin (10 replies)
Should I? (6 replies)
problem with 300ex (3 replies)
CFM Performance Air Box (59 replies)
anyone with a 400ex who does not own a K&N jet kit--------GET ONE (1 replies)
425 or 416 question (0 replies)
Cam ?'s, important (6 replies)
Who sells 89.25-89.5mm pistons? (0 replies)
new ex mod out... (6 replies)
Fmf (3 replies)
Help (0 replies)
400EX Best System (54 replies)
Anyone "need" a CR500EX??!! (10 replies)
400EX newbie..-Best Slip-On-!! (2 replies)
Problem with Fourtrax 300 (2 replies)
Big gun (4 replies)
400ex hp, and power gain questions (5 replies)
where to buy (1 replies)
300-330ex help?! (5 replies)
Little help please? (4 replies)
Remove Choke (5 replies)
Fdo 493 ??? (7 replies)
need sprocket help quick (1 replies)
Stator question? (0 replies)
Where to start rejetting (1 replies)
Installing 416 or 426 (2 replies)
ripping 400? (4 replies)
what carb (13 replies)
Does this hurt the engine? (5 replies)
400EX Vibrating Badly! Please Help!! (7 replies)
problem with base gaskit (3 replies)
Hey Chump... (Raptorman) (1 replies)
Is this possible?? (7 replies)
Jetting For Gabs Mod (1 replies)
Its time for more power!!! (31 replies)
big gun exhaust (4 replies)
300ex vs. Warrior (9 replies)
need help...fast (9 replies)
banshee hp? (11 replies)
is this right???? (3 replies)
electrc start (5 replies)
Need help (Hesitation) (3 replies)
250r piston Q (4 replies)
carb ? (2 replies)
440 instal headpipe glows red? (22 replies)
HMF slip-on (1 replies)
nuetral probs (5 replies)
I need quick help! 400ex Oil Change (7 replies)
R crank probs (21 replies)
Rad-loc (5 replies)
bore question (5 replies)
I need some rev-box recommendations. (17 replies)
250ex auto clutch help (4 replies)
parking brake block question (8 replies)
race gas hurt stock? (16 replies)
400ex Big Bore ?s HELP ME (7 replies)
25-30hp (3 replies)
stock jetting (1 replies)
worth it to bore stock carb? (3 replies)
4 stroke headjobs (4 replies)
the truth on "real compression #'s" (2 replies)
Is my camshaft ruined if... (10 replies)
Just got back from the sand drags. And I have some interesting results. (35 replies)
39fcr Or Quicksilver ??? (9 replies)
which carb is better ???? (0 replies)
Qwicksilver Carb Throttle???? (1 replies)
Quick Question... (1 replies)
300ex dies when warm (8 replies)
Dont Click Here!!!! (4 replies)
Why am I fouling plugs?! (12 replies)
high comp. piston, cam (1 replies)
Sparks 39MM FCR Reviews... (31 replies)
Exhaust question (0 replies)
300 (21 replies)
which compression (0 replies)
Oil Coolers - any performance gain? (5 replies)
Anybody have there headpipe jet-hot coated? (4 replies)
compression (0 replies)
Its Alive ,,, my 400 is a runnin SOB now. (3 replies)
10.5:1 piston in a hot AZ summer: Detonation? (0 replies)
Why 2 Head Gaskets? (3 replies)
89mm Ross Piston C/R with... (10 replies)
Quick needle clip question..... (3 replies)
96-98 XR400 ross piston in a 400ex? (3 replies)
Power-up Kit question (4 replies)
clickin noise when i push quad, its by the gear box (5 replies)
help me?!? (5 replies)
Hotcams: Stage 1 or 2 (15 replies)
Ross vs. JE (17 replies)
New California dB noise restrictions (1 replies)
250x vs 300ex (6 replies)
300EX/350X Conversion (15 replies)
one more jeting question (2 replies)
300ex/350x conversions probs please help (3 replies)
jetting questions (3 replies)
twist throttle kit??? (1 replies)
ProFabAtv? (20 replies)
Finally (1 replies)
What should I do here??? (11 replies)
Worier vs 440ex (16 replies)
Honda CRF 450 Motor (12 replies)
port and polish (8 replies)
Clutch? (1 replies)
Motor work? (4 replies)
cam instal 400ex help! exers (9 replies)
250r engine upgrade (17 replies)
400 wont idle (2 replies)
Wb R4 (5 replies)
valves,oil (2 replies)
Sparks Exhaust Clamp? (8 replies)
BREAK in Procedure????? (9 replies)
best clutches for high comp. motor ? (13 replies)
HOT-ROD and Frogburner's updated pics of the Quads.. (5 replies)
300ex Exhaust Poll (4 replies)
Jet Question (2 replies)
need help with 350x motor (13 replies)
what next.... (2 replies)
Header weld pics before/after (21 replies)
bored and sleeved 440cc cylinder? (1 replies)
head cover gasket (8 replies)
Is this the problem? (15 replies)
horsepower (0 replies)
Clutch is slipping, what to replace? (5 replies)
video of lrd pipe??? (0 replies)
removing chain (11 replies)
white brothers e series or pro circuit t-4 ? (13 replies)
mm or thou? valve settings (6 replies)
Power Valve cylinders (3 replies)
460 big bore kit (25 replies)
10.8:1 piston and cam (15 replies)
Air tube? (2 replies)
removing choke (2 replies)
Accelarator pump (2 replies)
Big Bore Questions (2 replies)
Carb Problems (7 replies)
Bore Kit Overheating Question (23 replies)
leaky valves , need some info !!! (6 replies)
stage 2 cams? (10 replies)
Help me out. (2 replies)
new clutch... (3 replies)
Pretty Pissed but now am okay.. (13 replies)
Ross and je, any difference? (9 replies)
ATV cool power clips (9 replies)
thumb fatige question (16 replies)
Jetting for different elevations... (13 replies)
If you have a choice ESR or Sparks (20 replies)
440cc compression reading (4 replies)
CFM airbox Lid or no Lid???? (15 replies)
aluminum rear sprockets (7 replies)
proc circiut t-4 slip on : what main jet and pilot (4 replies)
tricksters 300 pix (10 replies)
Whats the PROPER way to install a gasket???? (2 replies)
Why are the HOTCAMS so worried about breaking the cam in correct??? (2 replies)
400EX carb float: is it adjustable? (3 replies)
Approx. Speed (10 replies)
White bros Hot Tip (1 replies)
t-4 installation (5 replies)
prices ?(440) (12 replies)
416 owners, what jetting are you running? (30 replies)
Big Bore owners, what oil are you using? (9 replies)
300ex carb (0 replies)
web 450/451 cam...... (0 replies)
Sprocket fight. (8 replies)
What happens if you turn motor clockwise (13 replies)
Starters (1 replies)
engines (8 replies)
FCR 39 info and help (14 replies)
ticking.... (24 replies)
Ordered my DMC pipes today... (6 replies)
Questions for Port polishing and compression (8 replies)
Got the Motor Apart (3 replies)
got my ross piston and hotcam (14 replies)
throttle cable (3 replies)