airbox question

[NelanCustoms]

thanks alot. i will try the 2 stroke oil over the filter spray from the shop

[49er]

thanks alot. i will try the 2 stroke oil over the filter spray from the shop

Forget peeing on it, it will smell and you'll rust the internals of your airbox and engine.:-D
Many folks here have had bad experiences through over oiling their foam filters. They use purpose designed filter oil, but it is very easy to apply too much, which causes the engine to run very rich!!
Most 2 stroke mower fuel oil mixing ratios are in the range of 25-1 to 40-1. With these ratios you end up with just the right amount of oil film left on the foam, after a couple of sprays. Your aim is to leave a fine film of oil that does'nt overly restrict your air flow.
I have rebuilt my filter assembly with low density 5mm thick foam to help achieve this low resistance to flow. I realise that my engine won't last as long as those running thicker/higher density foam, but that's the price I'm prepared to pay for better performance,whilst retaining the airbox.

[earlfor]

Most foams decompose in gasoline. do not wash the foam out in any petroleum based solvents nor any alcohol based such as lacquer thinner or acetone, etc. use only soap and water, warm water if you like. Liquid dishwashing soap works fine, Just be sure and rinse it out in plain water and pat the foam dry between two towels, rags, or paper towels before misting with oil. Pat any excess oil lightly off the foam with a paper towel if need be.

Earl

[49er]

Most foams decompose in gasoline. do not wash the foam out in any petroleum based solvents nor any alcohol based such as lacquer thinner or acetone, etc. use only soap and water, warm water if you like. Liquid dishwashing soap works fine, Just be sure and rinse it out in plain water and pat the foam dry between two towels, rags, or paper towels before misting with oil. Pat any excess oil lightly off the foam with a paper towel if need be.

Earl

Hey Earl, you really had me going there, for a while! I rushed out to the shed and ripped the caps off the 850 airbox to inspect the foam. Panic over. The foam is still in sound condition after 3500kms. It looks a little discoloured with fine particles of dust, but that's OK.

I pondered why Mr Suzuki would expose his foam filter to a gasoline vapoured enviroment knowing that it would decompose over a short period of time. Do we know something that he didn't?

Mr Clymer must have had a bad day as well. He suggests that these foam filters be soaked in solvent, then hot soapy water and allowed to throughly dry before re-oiling!!!!!

All foam decomposes over extended periods of time. I have a very old set of Imperial internal micrometers. The set came in a wooden case and foam was used to protect the individual components from damage. Over 30 odd years, most of this protective foam has degenerated into powder at the bottom of the case.

[Steve]

I pondered why Mr Suzuki would expose his foam filter to a gasoline vapoured enviroment knowing that it would decompose over a short period of time.

If the system is working as designed, the gasoline vapors are introduced downstream of the foam filter. There is only supposed to be fresh air going through the filter. Yeah, when the bike stops, some of the vapors might migrate upstream, but I don't think they are a strong enough concentration to do much immediate damage. Over time (linke the last 25 years) that might be another matter, but most people will change the foam before that.


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[Mr. Brown]

Nelan,
Your original question was about the rubber gasket, or snorkel. I tried several things to try and compensate for my missing snorkel but could never get it right. I was also never able to find a source for snorkels...

Find a box with a snorkel attached. Ebay has 'em, and the junkyard down the street from me has a few...
-=T=-

[NelanCustoms]

i repaired my snorkel and its good as new, thanks

[TheCafeKid]

Hey Nelan i dont know where your brake line question went, but i found some stainless brakelines on Z1 for cheap...almost as cheap as making them yourself without the hastle. That pic you showed is exactly what these are but you'll need to buy the fittings for the ends. Z1 has those too.