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martinfan30
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(Date Posted:12/13/2005 06:04:52)
just installed a dynojet kit in my 650l. noticeable power low to mid range. hopefully this increases with the pipe and muffler that is sitting under my xmas tree!
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Motosportman
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(Date Posted:12/22/2005 05:13:20)
I have yet to uncork my 650L, did the dynojet kit make a REALLY BIG difference? I was reading about them and it was stated that it only gave abouta 5% increase in power. Let me know how it goes with the new pipe and all!
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2005 XR650L, 2004 XR250R, 1974 XL350, 1972 XL250, 1975 XL175, 1975 XL-125 and 2 woods playbikes, 1973 XL250, 1975 XL350. 1972 TS-125J
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martinfan30
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(Date Posted:12/23/2005 02:53:34)
Reply to : Motosportman
I have yet to uncork my 650L, did the dynojet kit make a REALLY BIG difference? I was reading about them and it was stated that it only gave abouta 5% increase in power. Let me know how it goes with the new pipe and all!
it is not REALLY BIG, but you do notice it. i havent put on the new exh. yet but i took out the center piece on the stock muffler to see what it would do. one thing i did find out is that the stock float level setting is too low. it cuts out a bit when wringing it out. i'll let u know what happens when i exhaust it and bring up the float level.
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martinfan30
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(Date Posted:12/27/2005 03:25:21)
Reply to : Motosportman
I have yet to uncork my 650L, did the dynojet kit make a REALLY BIG difference? I was reading about them and it was stated that it only gave abouta 5% increase in power. Let me know how it goes with the new pipe and all!
got some more info for ya. i ended up putting the 160 needle jet in(comes with 2 jets , started with the 165) and while i had the vacuum piston/slide out i enlarged the two holes in the bottom of it to 5/32". there are 3 holes, 1 in the center for the needle and 2 on the outside edge. only enlarge the 2 outer ones! then i drilled the rivets out that hold in the airbox snorkel and tossed it. the bike now easily lifts the front tire just by rolling on the throttle. no driveability problems at all! you can check this info at thumpertalk. still have stock exhaust, but i removed to center piece from muffler. have fun!
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Motosportman
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(Date Posted:01/06/2006 18:51:22)
Really!!! loft the front end by just rolling on the gas eh??? I just may have to do it! sounds like you avoided drilling th slide holes at first and then went back and did it. that back went down a size on the main jet?
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2005 XR650L, 2004 XR250R, 1974 XL350, 1972 XL250, 1975 XL175, 1975 XL-125 and 2 woods playbikes, 1973 XL250, 1975 XL350. 1972 TS-125J
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Motosportman
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(Date Posted:01/06/2006 18:54:56)
oops forget to ask - did it also improve cold starting? are you running a foam filter>? how is the plug read? in what gears do roll on gas wheelies occur - stock in 1st gear it lofts the front end with a blip of the throttle. But I would expect that on a 650 single, i have heard the dynojet kits enable it to be gassed into lofting the fornt end easily ionto 3rd gear! did you get the kit from Baja designs? how long for installtion start to finish - thanks for the information!
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2005 XR650L, 2004 XR250R, 1974 XL350, 1972 XL250, 1975 XL175, 1975 XL-125 and 2 woods playbikes, 1973 XL250, 1975 XL350. 1972 TS-125J
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martinfan30
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(Date Posted:01/08/2006 02:48:23)
Reply to : Motosportman
oops forget to ask - did it also improve cold starting? are you running a foam filter>? how is the plug read? in what gears do roll on gas wheelies occur - stock in 1st gear it lofts the front end with a blip of the throttle. But I would expect that on a 650 single, i have heard the dynojet kits enable it to be gassed into lofting the fornt end easily ionto 3rd gear! did you get the kit from Baja designs? how long for installtion start to finish - thanks for the information!
i do run a uni filter with airbox snorkel removed. just drill out the 2 rivetes and pull it out. plug read is slightly rich (has lowered operating temp nicely) but keep in mind im at 4800 feet ele. 1st gear wheelies easily but again if you are lower in ele. you'll have more power anyway. mine never would lift the front stock due to this. id love to try it at sea level! yes the djet kit is from baja desings. i also just installed the white bros. e2 series muffler and it sounds bad asssssss! time to install? about 10-15 min to get carb out of bike, and another 10 min to istall jet(either 160 or 165 that comes in kit. and also to install new vacuum slide spring and adjustable jet needle. while you havevacuum slide out drill out the outer holes to 5/32". then another 10 min to reinstall. easy stuff and fun! my dad is jealous now(hes got 2001 xr650l with white bros e series muffler and some carb work he had alocal shop jet) and mine pulls harder all the way thru! oh funnny thing when i first got the djet kit i put in the 165 main and the bike would act like it was starving for fuel at higher revs, high speed so keep that in mind whe nyou go to install the kit. let me know how it turns out if/when you do this! later.
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martinfan30
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(Date Posted:01/08/2006 03:10:41)
forgot to answer your first question! yes cold startup is drastically better. do have start it with choke at half position, starts much easier now in half pos. than full choke.
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Motosportman
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(Date Posted:01/08/2006 16:29:00)
Reply to : martinfan30
forgot to answer your first question! yes cold startup is drastically better. do have start it with choke at half position, starts much easier now in half pos. than full choke.
well looks like I may have to order oen after all and install. I am at 300 ft above sea level.. think I should start out with the 165 main>?
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2005 XR650L, 2004 XR250R, 1974 XL350, 1972 XL250, 1975 XL175, 1975 XL-125 and 2 woods playbikes, 1973 XL250, 1975 XL350. 1972 TS-125J
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martinfan30
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(Date Posted:01/09/2006 04:10:23)
Reply to : Motosportman
Reply to : martinfan30forgot to answer your first question! yes cold startup is drastically better. do have start it with choke at half position, starts much easier now in half pos. than full choke.well looks like I may have to order oen after all and install. I am at 300 ft above sea level.. think I should start out with the 165 main>?
yeah if you have a flowing muffler(maybe a header pipe, but my header is stock). also you may want to do the mods i talked about. 165 main at that ele. is a good start, probably the right choice. it is easy to change back to the 160 if you have the problem i did.
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Motosportman
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(Date Posted:01/12/2006 15:35:11)
looking at the XR's only exhaust system - way cool stainless header and silencer, that should top it off nice for added performance! but at first I am going to use the stock pipe...dynojet kit is on the way!
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2005 XR650L, 2004 XR250R, 1974 XL350, 1972 XL250, 1975 XL175, 1975 XL-125 and 2 woods playbikes, 1973 XL250, 1975 XL350. 1972 TS-125J
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martinfan30
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(Date Posted:01/13/2006 03:17:08)
Reply to : Motosportman
looking at the XR's only exhaust system - way cool stainless header and silencer, that should top it off nice for added performance! but at first I am going to use the stock pipe...dynojet kit is on the way!
ya try whatever silencer ur getting with the stock headr first. my dad hasthe same bike only he runs the white bros. header and their e1 series muffler, same carb mods and i think mine pulls harder! mostly on the bottom, but it is a small difference. got your djet kit on the way! cool! let me know he she does!
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brucifer
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(Date Posted:01/13/2006 04:57:42)
Hey guys! Martinfan is correct about the headpipe deal. The stock Honda headpipe actually does a good job with the bolt-ons you guys are playing with, without losing any bottom end. I tried a White Brothers oversize headpipe early on with my xr600 project and lost bottom end I could feel. It was'nt until I did the other mods[big bore with more compression, more cam etc.] that the larger headpipe helped. Or at least did'nt hurt.
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Bruce
'04 Buell XB12S Lightning '02 Yamaha FZ1 '01 XR650R '75 XL350 '84 XL600R '84 TT600 '78 XT500
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Motosportman
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(Date Posted:01/13/2006 19:38:25)
Hmmmmmmmm well let me see if I got this right, Martinfan your running stock header and muffler with the core removed right? and a re-jet, with great results. Your Dad is running an after market pipe with not as good of reulsts as you got and further without improvement ot the top end (bigger bore etc) the aftermarket headers don't do much for the bike and yo actually loose some bottom end (as I have found to be true with all aftermarket pipes in applications on the old XL's - they rev better but loose thump down low)
So my question / statement is this. I will rejet and run it with the stock pipe and see how I like the performance improvement (and besides I like the quietness of the stock pipe and ( I am afraid the XR's only pipe and headers will be VERY loud) if I have to I will remove the baffle in the stock pipe. I like the high end look of the XR's only stainless header over the stock header...but I need to have confirmed the gain (besides looks) that I would get. It is I think an expensive aftermarket setup at about 450.00 and if it is only going ot make the bike loud and enable it to rev higher - I would not opt for it. I also think it is in the design of these pipes that the power comes on in mid range to high end of the RPM range - as tey are after all as XR's only calls it "competition exhaust". I don't necessarily need that. I only want it to flow better, cool it down for longevity (vice running lean and hot) and realize some increased power, throttle respsonse and ease of cold starts.
Opinions / reccomendations welcome!!!!!
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2005 XR650L, 2004 XR250R, 1974 XL350, 1972 XL250, 1975 XL175, 1975 XL-125 and 2 woods playbikes, 1973 XL250, 1975 XL350. 1972 TS-125J
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brucifer
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15#
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(Date Posted:01/13/2006 19:44:50)
Hey Motosportman. Martinfan is actually running a White Brothers E-series muffler now. Check out his other thread on this forum.
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Bruce
'04 Buell XB12S Lightning '02 Yamaha FZ1 '01 XR650R '75 XL350 '84 XL600R '84 TT600 '78 XT500
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martinfan30
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(Date Posted:01/14/2006 21:55:21)
yes i use the w.bros e2 series muffler and stock headr pipe. try that before buying a header pipe. also i highly recomend checking out the ebay listing for xr650l parts. there is a guy there that sells this muffler(from whom i won an auction for mine). he must have an endless supply cause ive been biding on that muffler for 4 months. every time one is sold to a bidder, a couple days later he puts another one up. also i got mine for 287.00 from him. that is the highest iv seen one go for and the lowest was 257.00. they retail for 360.00. it was in perfect shape and i received it in 3 days, awesome!
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leanjoe
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(Date Posted:01/21/2006 02:51:34)
Reply to : martinfan30
just installed a dynojet kit in my 650l. noticeable power low to mid range. hopefully this increases with the pipe and muffler that is sitting under my xmas tree!
Hate to sound like an idiot but,could you tell me what an rfvc motor is? thanks. Lean joe
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martinfan30
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(Date Posted:01/21/2006 04:29:16)
Reply to : leanjoe
Reply to : martinfan30just installed a dynojet kit in my 650l. noticeable power low to mid range. hopefully this increases with the pipe and muffler that is sitting under my xmas tree!Hate to sound like an idiot but,could you tell me what an rfvc motor is? thanks. Lean joe
no its not a stupid ? rfvc stands for radial four valve cylinder. it is a honda engine that started in 83? as a 600cc. it is similar to a "hemi" cylinder head, almost. do you have an rfvc bike? some guys(most guys in this site) are into the older rfvc's. myself and a couple others are into the later xr650l's. i have an '05 xr650l, motosportman has one and brucifer has an earlier xr600?(please correct me if im wrong bruceifer!) any how, have fun at this site and any ? u have will be answered. there i a lot of knowledge here! later.
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martinfan30
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(Date Posted:01/21/2006 17:59:20)
ya i hear ya! mine is almost a year old now! its gone quick.
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Motosportman
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(Date Posted:01/28/2006 17:28:05)
I installed the dynojet kit yesterday and the immediate difference was a quick cold start, better than before by far! removed the snorkle too and then went for a ride. nice smooth throttle response (I need to adust one cable I have too much slop for my preference) but overall the bike runs - well I guess like it was intended to run, goo chuggability from the bottom -without gasping clean throughout the rev range and pulls hard, gone is the popping back ona downhill. I installed the 160 main jet, needle in the 3rd position and new spring, I did not drill the slide (dynojet said not to) I set the mixture screw at 2.5 turns out from bottom. I think to fully realize all the uncorking - I have to drop the OEM pipe and install an aftermarket, like the FMF Q. Then with all the free flowing the power will really be realized! I know that after uncorking my XR250R and rejetting to a 135 main and a FMF pipe - WOW! that little bike is a rocket! no kidding I think it is probably faster than the old days CR250M Elsinore!
so now for the 650L an aftermarket pipe is what I think I need to do to complete the job!
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2005 XR650L, 2004 XR250R, 1974 XL350, 1972 XL250, 1975 XL175, 1975 XL-125 and 2 woods playbikes, 1973 XL250, 1975 XL350. 1972 TS-125J
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martinfan30
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22#
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(Date Posted:01/29/2006 05:29:38)
Reply to : Motosportman
I installed the dynojet kit yesterday and the immediate difference was a quick cold start, better than before by far! removed the snorkle too and then went for a ride. nice smooth throttle response (I need to adust one cable I have too much slop for my preference) but overall the bike runs - well I guess like it was intended to run, goo chuggability from the bottom -without gasping clean throughout the rev range and pulls hard, gone is the popping back ona downhill. I installed the 160 main jet, needle in the 3rd position and new spring, I did not drill the slide (dynojet said not to) I set the mixture screw at 2.5 turns out from bottom. I think to fully realize all the uncorking - I have to drop the OEM pipe and install an aftermarket, like the FMF Q. Then with all the free flowing the power will really be realized! I know that after uncorking my XR250R and rejetting t
thats awesome bro! seriously look at the white bros e2 series silencer. it has an removeable spark arrestor for cllosed course comp. and when you pull that, the bike pulls like a cummins on 'roids! if youve got the results you want without drilling the slide, sweet! just be sure your plug is showing a correct burn. have fun, and godspeed!
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Motosportman
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(Date Posted:01/31/2006 22:49:56)
Hey Martinfan,
Do you think I should drill the slide? I mean did you install your dynojet kit without drilling it and then go back and do it? also in the dynojet kit I installed the washer on top of the e-clip - as per the directions, sopunds funny to me - I would think it goes below the the clip. I am running the clip in the 3rd position. I am at about 300ft above sea level. 2.5 turns out on the air screw and I have a white brothers E2 on the way ! I am looking for those 2nd gear roll on wheelies!
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2005 XR650L, 2004 XR250R, 1974 XL350, 1972 XL250, 1975 XL175, 1975 XL-125 and 2 woods playbikes, 1973 XL250, 1975 XL350. 1972 TS-125J
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martinfan30
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24#
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(Date Posted:02/01/2006 06:58:11)
Reply to : Motosportman
Hey Martinfan, Do you think I should drill the slide? I mean did you install your dynojet kit without drilling it and then go back and do it? also in the dynojet kit I installed the washer on top of the e-clip - as per the directions, sopunds funny to me - I would think it goes below the the clip. I am running the clip in the 3rd position. I am at about 300ft above sea level. 2.5 turns out on the air screw and I have a white brothers E2 on the way ! I am looking for those 2nd gear roll on wheelies!
yes i think the slide needs to be drilled. i did that at time of jet kit install. remember only the 2 holes on the outside of the vacuum slide. the popular size is 5/32". yes ialso put the washer on top. i think it helps with the spring tension to keep the needle from walking up and down, avoiding fluctuating mixtures thru the main. if you put the spacer below the e clip that would really be like putting the e clip in the 2nd position on the needle making it an overly rich condition..i saw your posts on thumpertalk, i am now there too. keep in mind you wont see much improvement until you put on a nice silencer(i.e. the e2). also you will see aworld of difference between your stock muffler and just installing the slip-on e2 silencer(with the 96d.b. tip in). then try the comp only tip(which also comes with the e2 silencer) and that is even more impressive! but that tip is pretty loud, and without a s.arrestor. i hopefully have not misguided you into thinking that roll on whellies in 2nd or higher are easy. first gear is a given! i was assuming the elevation(denser air charge) at your low elevation will do it. between you and i there is a 5,000 foot drop in your favor. mathematically speaking you will RIP down there! keep me posted, and go number 6!
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martinfan30
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25#
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(Date Posted:02/01/2006 07:03:33)
forgot, did you drill out the snorkel?
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Motosportman
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26#
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(Date Posted:02/01/2006 17:38:27)
Hey!!! thanks for the info. I did not drill the slide, thinking of going back in and doing that, also Yes I did remove the snorkel, yet dynojet says to leave it in, as the kit is intended to be used witha stock air box and aftermarket filter.
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2005 XR650L, 2004 XR250R, 1974 XL350, 1972 XL250, 1975 XL175, 1975 XL-125 and 2 woods playbikes, 1973 XL250, 1975 XL350. 1972 TS-125J
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martinfan30
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27#
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(Date Posted:02/02/2006 04:57:46)
if ihadnt removed the snorkel i would be a little too much on the rich side, i think. with the jet kit. i think they meant not to remove the airbox completely and use a direct bolt on filter to the carb.
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Motosportman
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28#
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(Date Posted:02/07/2006 16:33:17)
sooooooooo you think I ought to reinstall the airbox snorkle? or leave it out?
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2005 XR650L, 2004 XR250R, 1974 XL350, 1972 XL250, 1975 XL175, 1975 XL-125 and 2 woods playbikes, 1973 XL250, 1975 XL350. 1972 TS-125J
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martinfan30
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(Date Posted:02/10/2006 08:59:45)
Reply to : Motosportman
sooooooooo you think I ought to reinstall the airbox snorkle? or leave it out?
my opinion is leave it out! any time you can increase incoming air is good for power gains. that is a big hole for more air, compared to 2 small holes with the snorkel in.
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Motosportman
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(Date Posted:02/13/2006 15:11:29)
Reply to : martinfan30
Reply to : Motosportmansooooooooo you think I ought to reinstall the airbox snorkle? or leave it out?my opinion is leave it out! any time you can increase incoming air is good for power gains. that is a big hole for more air, compared to 2 small holes with the snorkel in.
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2005 XR650L, 2004 XR250R, 1974 XL350, 1972 XL250, 1975 XL175, 1975 XL-125 and 2 woods playbikes, 1973 XL250, 1975 XL350. 1972 TS-125J
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