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my 81sh is in need of an air filter replacement. i found one constructed of reuseable foam called a Uni Filter for a better price for a paper element OEM replacement. i have a Kirker 4/1 exhaust i purchased 10yrs ago because it stated no carb rejetting necessary. my bike runs great with the Kirker and has a paper OEM air filter. but will i need to rejet when using a foam filter. Uni Filter has no stats other than to oil it before installation. im sure theres less air restriction thus more intake air. any help will be greatly appreciated. ive had the carbs on/off and made adjustments several times after sitting with 10yrs of bad fuel and finally have them where i want them. then again, i wouldnt mind a reuseable better airflow, better fuel mileage, air filter, but without having to rejet. someone please set me straight.
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Last edited by mjpxs11sh; 12-15-2011, 12:31 AM.Max
81 XS1100SH Black Beast Mutt
Kerker 4/1
stock carbs and air box.
78 headlite, handle bars,
1 set of ea-160/85mph guages,
crash bars, cruise control
Other 2 Wheelers
78 XS1100E jet kit, Kerker 4/1, air pods, jet kit-RIP
94 CBR1000F jet kit,Two Bros pipe, K&N Filter -
The UNI filter is a common replacement, and no jetting changes are required...Fast, Cheap, Reliable... Pick any two
'78E original owner - resto project
'78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
'82 XJ rebuild project
'80SG restified, red SOLD
'79F parts...
'81H more parts...
Other current bikes:
'93 XL1200 Anniversary Sportster 85RWHP
'86 XL883/1200 Chopper
'82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
Cage: '13 Mustang GT/CS with a few 'custom' touches
Yep, can't leave nuthin' alone... -
thanx CS. ive had all the usual carb issues and could remove them with my eyes closed its been so many times. i def wanted to avoid pulling them again since ive got em right. dont fix what aint broken kinda thing. should have posted first cause i cancelled my Uni Filter order after i was reading google posts. oh well. i also checked with Yamaha for an OEM filter. they want $49 for it. unbelievable, what thieves.Max
81 XS1100SH Black Beast Mutt
Kerker 4/1
stock carbs and air box.
78 headlite, handle bars,
1 set of ea-160/85mph guages,
crash bars, cruise control
Other 2 Wheelers
78 XS1100E jet kit, Kerker 4/1, air pods, jet kit-RIP
94 CBR1000F jet kit,Two Bros pipe, K&N FilterComment
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Just keep an eye on your plugs after you put it in. You could always be on the edge of running lean and the filter just might put it over the top. Better safe than sorry.Nathan
KD9ARL
μολὼν λαβέ
1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters
Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner
In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.
Theodore RooseveltComment
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A problem I had with a Uni foam filter a while back:
The carbs weren't set up perfectly and the engine would like to backfire thru the carbs once in a while. Several months later I went to remove the air filter and it had caught on fire and melted. Only downside to these foam filters is they can melt and cause a mess in the air box if there is a problem. JMHO, YMMV.2H7 (79) owned since '89
3H3 owned since '06
"If it ain't broke, modify it"
☮Comment
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I have them in both bikes. They work just fine for me.
The one in the okieSPECIAL I've had in there for 3 years now. Clean and re-oil about twice a year. I just use spray lube to oil it.
Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.
Comment
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I have 4 into 1 exhaust and a K&N filter in the stock airbox. My jetting is stock. It looks to be the proper setup.Marty (in Mississippi)
XS1100SG
XS650SK
XS650SH
XS650G
XS6502F
XS650EComment
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Air filter
Here is a reasonable replacment filter that is close to OEM
http://www.ebay.com/itm/Yamaha-XS110...sories&vxp=mtr
OEM at a discount:
http://www.ebay.com/itm/YAMAHA-XS110...sories&vxp=mtr
Originally posted by mjpxs11sh View PostLast edited by XS1100_OEM4ME; 12-15-2011, 09:13 AM.1979 XS1100 Special (Mad Max, OEM) Current
1980 XS1100 Special
1990 V Max
1982 KZ750 LTD Twin
1986 700 FZR Yamaha Fazer (faster then expected)
1979 XS750 Special (my 1st Special)
1974 CB750-Four
Past/pres Car's
1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8Comment
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I put a UNI in my XJ650 and wow! the difference was like night and day! Going from clogged up paper filter to that thing u better be ready to hang on!BARE BONES CHOPPERS: If it don't make it go faster, you don't need it!
80 XS1100SG(cafe in progress *slowly)Comment
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I can also vouch for the UNI, had mine about 6 yrs and as long as you keep it oiled, it won't deteriorate.Former owner, but I have NO PARTS LEFT!
Comment
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I can also vouch for the UNI, had mine about 6 yrs and as long as you keep it oiled, it won't deteriorate...................+1 on the UNI and have had for same amount of time. Careful of buying one of those NOS originals with the foam. Saw a thread here where a member had the foam come apart from its age and long shelf life.......JAT.81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.Comment
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Uni products
I've got UNI in one bike & K&N in another. can't tell difference in performance. Like the UNI.
Also anyone looking for pod filters should look at the UNI website. Theirs are much superior to EMGOs & don't cost that much more.
Tom Clisham
Age is relative YOU WON"T GET OLD TIL YOU SELL THE BIKE
_____________________________________________
'78xs1100E ,all stock & original GONE TO WISCONSIN
'80 SG Vetter fairing,hard bags,trunk,fork brace,
stock headers with fishtail mufflers,black & beautiful GONE TO ARIZONA
79SF lowered,jardine 4/2 exhaust,pod filters,drilled rotors,fork brace, bar hopper
79SF 1 owner,8000 miles, restoring to completely original ( I hope) GONE TO FRANCEComment
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thanx everyone. i guess ill be putting it in since i was just notified my order cant be cancelled. i feel i made the right choice after reading all the replys. what oil are you guys using for the filter. i have some K&N red oil spray for thier filters. will that be sufficient or do i need to soak it in motor oil? im hoping ill have to hang on when i grab a handfull.
Marty, great to hear you got your leaking carbs straight, was reading your post last night. ive had that among the other typical carb issues.Last edited by mjpxs11sh; 12-15-2011, 02:28 PM.Max
81 XS1100SH Black Beast Mutt
Kerker 4/1
stock carbs and air box.
78 headlite, handle bars,
1 set of ea-160/85mph guages,
crash bars, cruise control
Other 2 Wheelers
78 XS1100E jet kit, Kerker 4/1, air pods, jet kit-RIP
94 CBR1000F jet kit,Two Bros pipe, K&N FilterComment
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K&n
I would guess the K&N spray would be fine, but it should come with instructions as to what kind of oil is compatabule with their foam, I would check to be sure
Originally posted by mjpxs11sh View Postthanx everyone. i guess ill be putting it in since i was just notified my order cant be cancelled. i feel i made the right choice after reading all the replys. what oil are you guys using for the filter. i have some K&N red oil spray for thier filters. will that be sufficient or do i need to soak it in motor oil? im hoping ill have to hang on when i grab a handfull.
Marty, great to hear you got your leaking carbs straight, was reading your post last night. ive had that among the other typical carb issues.1979 XS1100 Special (Mad Max, OEM) Current
1980 XS1100 Special
1990 V Max
1982 KZ750 LTD Twin
1986 700 FZR Yamaha Fazer (faster then expected)
1979 XS750 Special (my 1st Special)
1974 CB750-Four
Past/pres Car's
1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8Comment
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UNI has their own oil, but you could use motor oil. If you do, get a heavy weight oil so it sticks. The K&N stuff should be fine, too. I bet it's pretty sticky stuff, eh?
Wring it out when you're done oiling it. If it's too wet, it'll drip on the motor. DAMHIKIJKFormer owner, but I have NO PARTS LEFT!Comment
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