I got a 2004 400ex it had a FMF pipe on it and I put a white bros. pipe on is the jetting the same. I was told that the FMF runs leaner but I dont Know.
New to the board
Arm chair racerNew to the board
I got a 2004 400ex it had a FMF pipe on it and I put a white bros. pipe on is the jetting the same. I was told that the FMF runs leaner but I dont Know.
1985 250r sold
1999 grizzly sold
1985 200x traded for lt80
1989 kx500sold
1990 Kawasaki Mojave
1996 Kawasaki Vulcan sold
2004 Honda 400ex
Trike less but always looking
R.I.P. Hey Ron Racing-GIT IT RAG!
Got the holeshot
we had a LRD Pipe on our 01 ex.. we changed the 148 main to a 175 main .. if yours "lean pops" when hot ... jet it fatter, bend the squirt arm abit behind the black cover to spray gas in earlier... keeps it from bogging from idol when stabbed
"07" DR650 Suzuki Dual Sport
Power User
Got the holeshot
What jet is in it now? Probably around a 155?
Yamahondaman, 148 to a 175 for just a pipe seems like too much. Does it cut out at high RPM'S? What do you mean by "lean pops"? When you're decelerating? If so, that can be fixed by air/fuel screw adjustments. The "squirt arm" you're talking about, is it the accelerator pump?, if so, I definitely would not touch it, especially when the "bogging from idle" is probably a jetting problem (rich).
Blowfish, tell us more. Open air box? What air filter? And while you're into the carb, I would highly recommend getting a 42 pilot to put in. Really helps with cold weather starting and low end performance.
Later,
Travis
36 yo, Apple geek, married with kids, conservative. If you are a GUN OWNER and not a member of the NRA, SHAME ON YOU! JOIN!
Gun control is not about guns, it's about CONTROL!
My Rags
85 ATC70,85 ATC70,85 ATC110,83 ATC185S,85 ATC250ES,02 400EX,04 Polaris ATP 500
Past rags:2000 Scrambler 400, 86 350X, 86 250R, 84 200S, 97 ATK260LQ
Just Too Addicted
Arm chair racerJust too addicted
You can get pops and backfires if your jetting is too rich also. Never assume your jetting is automatically lean if it pops or backfires a little. I wont have any popping or backfireing for a week or two then it will start doing it. I clean my airfilter and it goes away.
I got nothing...
At The Back Of The Pack
First time rider
to jet mine, i just simply followed dynojets instructions. it was spot on. no guessing or playing with it after installation.
R.I.P. Hey Ron Racing-GIT IT RAG!
Got the holeshot
Ours didn't "bog" on the top with the 178 .. i smooth tapered the back of the carb and also had a cone in the air box to except the TRX Filter, BIG Volumn !
also i gapped the valves at .002 ... helped ALOT !!
"07" DR650 Suzuki Dual Sport
New to the board
Arm chair racerNew to the board
Blowfish, all you can do is take it out and ride it after you put the new pipe on it and see how she runs. If it bogs and sputters on top then you are rich. If it pops on the top end and if you notice it running hotter then you are lean. If neither of these happens and it runs smooth you are probably alright.
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