air pre filter

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James1996

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I have a DT1 triple flow foam filter and was wondering what can I make or use as a prefilter for this long airfilter
 
The DTI Filter

Hi All. I have two triple flow filters. In north east Oregon we went for 8 months with out rain. thats why i bought these. Useing Maxima FFT filter oil HY 30.5, WT 990, tall velocity stack, Jet-pro rear. The triple flo kills the over-rev, top end. I switched to No-Toil filter oil-- small improvement because of the thinner oil, but still will not flow enough air. Heres a cheap mod that you can do to the DT-1 to increase the dead air space in the filter. Get a 35mm film container - sharp ex-zacto knife and cut a 1" cyclnder, put this open ended pice over a round piece of wood and drill as many holes as you can without overlapping the holes. Do not use a wire wheel to remove the plastic burrs from the holes. Use a new razor knife and glasses so you can remove every single piece of plastic burrs- inside and out. push this piece you drilled into the filter about 2 inches. This makes a big improvement -- more dead air space- I suspect that on a hot-rod moter this triple flows restrictions are going to be much worse. I have a 2 stage DT-1 comeing from DDM soon. I will install this puppy with The 35mm mod- No-Toil oil - Its wet ground now. In the future, I will try the single stage filter with Maxmia FFT filter oil and Outer wares pre filter. There is no need for a pre-filter on the 3 stage filter. The 2 stage? it depends --- I will try soon and post for all to read.
 
Filter oil and DT-1

Also, I would only run the No-Toil filter oil in no dust conditions. When it gets dusty i use Maxima FFT. This comes from 40+ years of dirt bikes in all conditions. The outer-wares pre-filter causes approx 8-10% loss of air flo on dirt bikes with large filters- On the little high rpm moters with undersize air-filters we all use its going to be worse. Pardon my spelling on the posts- I have a decent command of more than 1 tounge, but my spelling------!!!
 
air filter

I talked to a fellow at the Uni-Filter factory last fall - they sell bulk filter foam there, asked him what he recomenned for glue to build filters for vintage dirt bikes. he said to use Pliobond glue. As for a way around the hi dollar prefilter, why not buy a shop-vac filter? they are reinforced with something to prevent the filter from tearing- cut it a little large to give more flow area- use a zip-tie or wide rubber band to hold it on- as long as it didnot get wet or soaked with oil---
 
engine screen

After I bought the mighty XB I pulled the engine and cut pieces of plastic window screen for the air intake holes on the engine block- I used automotive Goop to hold- same for the recoil start cover-- This will not work for sand dunes- anywhere else it works fine- Yea, theres no bling on this XB- its all about function- not form!!! Do not try to use the Goop to build a foam filter- it will eat the foam and cause a engine failure- Say GTS 666- In AU there is a shop called Power slide racing- In the engine section they sell Viton engine seals- kinda spendy but Viton is more durable than rubber, the ad says An AU company called Outlaw-rc - either makes these or buys them then puts there name on them- Never found these anywhere else but in your country- Viton is what the needle tip on the Walbro carbs is made of- though stuff-------
 
alfred e numan said:
After I bought the mighty XB I pulled the engine and cut pieces of plastic window screen for the air intake holes on the engine block- I used automotive Goop to hold- same for the recoil start cover-- This will not work for sand dunes- anywhere else it works fine- Yea, theres no bling on this XB- its all about function- not form!!! Do not try to use the Goop to build a foam filter- it will eat the foam and cause a engine failure- Say GTS 666- In AU there is a shop called Power slide racing- In the engine section they sell Viton engine seals- kinda spendy but Viton is more durable than rubber, the ad says An AU company called Outlaw-rc - either makes these or buys them then puts there name on them- Never found these anywhere else but in your country- Viton is what the needle tip on the Walbro carbs is made of- though stuff-------
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Sorry- I ment to say James 1996--- Its still early here-dark
 
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