dtmf

you can get bigger jet's here : http://www.mikesxs.net/products-38.html#products but unless your goiing to change your intake and exhuast it wont change mutch . ive changed my intake and exhuast gone with bigger jet's did a valve adjust,carb sync , changed my plug wire's and plug's,new clutch , chain and alot of other stuff. it did make the bike a bit more peppy

how bad are they? if it's just the muff's that are rotted cut them off and weld up some new one's .mine where rotted and the down pipe's where all rusty and dinged up/cracked from the oil level peep sight and back so i cut them down and weled up some new pipe .

soundy's like your float's need to be adjusted . if you go with straight pipe's go up atlest 132 or 135 main's with 42 for the pilot's . there is no x-over pipe on mine just straight pipe . i cut the stock pipe's down and welded up 1" 5/8 pipe it was a tight slip fit over the stock pipe . i also had to weld the stock double wall pipe shut before i welded up the 1" 5/8. i got all my carb part's here: http://www.mikesxs.net/products-37.html#products also get new fuel idel mixture screw set. i would start from scratch and do a full rebuild. take your time check evreything . there are lot's of thread's on here about adjusting your float hight . remove and reseal your intake boot's . get new exuast gasket's and bolt's . do a valve check and adjust if you need to before you sync your carb's. you can just sync them without the valve adj. but it wont be perfect. if you do go with a straight pipe setup let me tell you it will be f-ing loud like realy realy. car's cannot stand to be near me on the highway hehe here's and old pic of my pipe's

if you have not downloaded the manual yet you should . it's pinned @ the top of the classics section . it will give you all the info you need to sync your carb's . you can also make a cheap manometer with a yardstick and 5ft of clear tubing and some oil . the pipes were realy cheap to make like 30 buck's . the pipe wrap was the big cost . havw you made any change to the piolt jet's ? also if you are going to do another jet change just make both side's the same.

that's one sweet ride you have there what size is that rear tire?

do you get any poping or surgeing @wot? when i did my 1st jet change after the pod's and exhust when in 6th gear @ wot i top'd out @ 70 mph it just whould not pull . when i did the next change i made both carb's main the same 130 . it got better . this last time i went 137 on both side's now it pull's me off the bike. i'm runing straght pipe's tho . have you checked the plug's? good place to check if you are to rich or lean . did you do a carb sync after you put the carb's back on ?

both pilot jet's should be the same size and style with hole's or with out.i got mine from here http://www.mikesxs.net/products-39.html#products

i say go for it . i did mine last june? i have not had any problem's with it . plus it look's bad ass . here's a pic of mine

if the old relay still work's use that and a 10ohm/10watt resister for each blinker. that's what i did and it work's gr8

i would check the tach cable as well . be carfull pulling that one during idle it is spining

there is a check bolt on the RH side of the head . have you downloaded the manual ? it's stickied @ the top of the thread's for the classics http://www.yamahaclub.com/forums/topic/16081-xs400-links/ . loosen the oil galllery bolt on the RH cylinder. start the engine keep idling until oil begins to seep out . if no oil come's out then you have a problem. the bolt is on the RH cylinder just under the cylinder head plug . i think it's like 10mm with a philipshead center

i have my main's set @ 130 both side's . i also have custom pipes and pod's . when i ran with the off set carb set up like stock the side with the lower jet size was way lean . i also have used mikesxs for alot of part's for my 82 seca xs400

have you checked to make shure oil is making it's way to the top of the head?

i think you could just wire it up like a 3 way toggle . right for right left for left center for nothing

here's the pix of the uni filter's and batt box

that would be a yes on the sawzall trick that's what i did i did have to weld up a custom batt box tho . i'll post up some pix

the rubber on the mikes xs pods i got was stiff and cheap and split around the base after a few month's . the uni fiter's can be cleaned . the fitment of the uni filter's was much better and the rubber was not to stiff . the base fit the carb's alot better . as far as performance i did not notice any diff . the mikes xs pod's do "look" better tho

here's what i did i have a 82 xs400 seca so i belive it's the same motor . full carb clean then changed the main jet's to 130 pilot jet's to 42 . i'm runing uni pod filter's they are biger than the 1's from mikes xs and they are better made. also have custom made straght pipe's with custom baffle's i still think i need to go up atleast 1 more jet size . mike's xs pod's : pipe's: i'll take a pic of the uni pod's tommrow

some video of me riding the pace on some twistie road's near my home . the road's were dirty and it was cold but i when't for it anyway . my cam take's horrible audio so i put some tune's in . 1st is mount helix then lyon's vally road . enjoy

it rained all day today and i just finished my new camra mount . the valve shim's are a pain cuse you have to check them . then order each size you need . then wait for them to show up and hope they are the right size . here's the link's for the tool and the shim's . i'm shure you'll have to do your's some day on your 82 . the yamaha manual has a key to tell you the size you need http://www.z1enterprises.com/detail.aspx?ID=1698 http://www.z1enterprises.com/catalog.aspx?pid=XS400-1982-EN1

hope you had a good ride mine was EPIC . there was nobody out on the twisty back road's here. the bike ran very good . i still need to change the valve shim's tho . also if anyone want's i track my rides with a GPS and you can import them into google earth . realy cool . i can email you the file's if you want to see some good rides here in san diego

she did good . plug's look good cept here in CA. we have alot of fuel additive's wich she does not like i'm going out again today with a fresh set of plug's and new uni pod filter's insted of the one's from mikes xs . i also need to run the rest of this 91 octane out and go back to 87 .

well i went ahead and changed the main jet in the RH carb . now they both have #130. i did notice some changes @ wot seem's to pull a bit harder . also no more leanness in the RH carb. i'll be out on a long ride today to see how she does

in the manual for my carb's it list's the main jet's @ diff sizes for the LH/RH. when i changed my intake and exaust i changed my jet sizes as well. i went up 1 size on the main's and the pilot jet's . i kept the same size diff on the main's for each carb. the side that has a smaller size main jet now run's lean . why do the carb's have diff size main jet's . can i use the same size main's on both carb's ?