Filters

tz375 · Post by **tz375** » Sat May 09, 2009 8:39 am

Anyone got any experience with pod type air filters?

I have used flat backed ones with terrible results o RD Yamahas and tried Emgos (junk), K&N (good on an RD) and UNI (good on a TZ kart), but I have no experience with them on a GT750.

Anyone got any thoughts, observations or comments?

Tom Garcia · Post by **Tom Garcia** » Sat May 09, 2009 9:54 am

I know that there is a difference between K&N/Emgo pods and Unis... Unis are much better on my H2...

I forget what Lane has on his buff...

tz375 · Post by **tz375** » Sat May 09, 2009 11:28 am

Tom, Do you run them oiled and if so what filter oil do you recommend?

When you say that the H2 runs better with Uni's, is that they make more power or have less flat spots or?

elbert · Post by **elbert** » Sat May 09, 2009 2:18 pm

I just put KN's on my T350, went up two sizes on the main jet and it runs better than ever...

tz375 · Post by **tz375** » Thu May 21, 2009 11:34 pm

I got two 15 degree for the outers and rotated them so they are narrow at the back and higher than the straight one in the center. It isn't pretty but it keeps it narrower at the side covers.

I think I'll start with 120 mains with stock pipes and maybe 130/135 with Strader exhaust.

bighole · Post by **bighole** » Fri May 22, 2009 4:33 am

Richard,
I tried the cheapo emgos for a while until they fell apart. It is my understanding that the metal endcaps interfere with the vacuum pulses from the carbs and actually cause an inconsistent fuel/air mixture so stay away from anything with that.
I now have oiled uni filters with a dry outer foam sleeve on and that seems to be fine.

-John

tz375 · Post by **tz375** » Fri May 22, 2009 8:21 am

John,

I tried cheap filters years ago on an RD400 and they cost so much in pistons and rebores that I threw them away.

This time I'm starting with 6 inch long UNI fiters with a ton or filter area and foam ends. I'm expecting them to be a whole world better.

Now i need to order a bottle of filter oil

H2RICK · Post by **H2RICK** » Wed May 27, 2009 8:25 am

Now i need to order a bottle of filter oil

TZ, don't waste your money. For street use, all I've ever used is injector oil to oil my foam filters. Soak the filter(s) thoroughly in pure injector oil, squeeze (don't wring) them out, let them stand on a clean rag out in the sun somewhere for about 30 minutes and then install them.
You can clean them in solvent (or gasoline) quite easily and re-oil them once a month, if desired.