BMC F1 Air filter failure - Page 3

gsmith660 · 07-27-2011, 11:06 AM

Glad to hear it was the cause and good job!

Quote:

Originally Posted by mooney265

I did just that [removed blade and took to trusty radiator shop around the corner - - $10]... reassembled and huge difference! I also put a thin silicon sleeve around the idle adjustment screw tip. Bench tested the idle screw and was able to eliminate 80% of the air flow with the screw all the way in.

That's right, there is still air passing around the screw when it's all the way in...

Reassembled and was able to get my idle all the way down to below 400 rpm's with the idle screw when fully warm [with more room to go...]. Of course I raised it up to 900. then, had to lean the idle mixture a bit [due to lack of air], and all is well!

BMAN · 07-30-2011, 04:49 PM

I removed my air box on my 86 930 and used Fabspeed intake system. I now have a 91 Turbo and also wanted to remove the air box . When I tried to order the kit this time around I was told it wouldn't work on my 91 even though their web page states will fit up to 94.

My question is, does anyone have the part numbers for all the filters that would be needed? If I would use K&N filters. Its been sometime now since I put it on my old 930, how many filters are needed? Thanks

JFairman · 07-30-2011, 05:54 PM

You don't need any little filters just vent the hoses to atmosphere under the sheetmetal so you're not breathing in the fumes while driving especially in cool weather if the heat is on and blowing.. thats all engine compartment air.

race911turbo · race911turbo's Garage

Quote:

Originally Posted by BMAN

I removed my air box on my 86 930 and used Fabspeed intake system. I now have a 91 Turbo and also wanted to remove the air box . When I tried to order the kit this time around I was told it wouldn't work on my 91 even though their web page states will fit up to 94.

My question is, does anyone have the part numbers for all the filters that would be needed? If I would use K&N filters. Its been sometime now since I put it on my old 930, how many filters are needed? Thanks

I installed my kit on 1991 965 turbo, you will need 25 mm for oil tank breath valve 15 mm for fuel tank breath valve and main air filter.

For 965 turbo A/C line is secure to air box you will need to tight it down.

race911turbo · race911turbo's Garage

Quote:

Originally Posted by race911turbo

I installed my kit on 1991 965 turbo, you will need 25 mm for oil tank breath valve 15 mm for fuel tank breath valve and main air filter.

For 965 turbo A/C line is secure to air box you will need to tight it down.

race911turbo · race911turbo's Garage

Quote:

Originally Posted by JFairman

You don't need any little filters just vent the hoses to atmosphere under the sheetmetal so you're not breathing in the fumes while driving especially in cool weather if the heat is on and blowing.. thats all engine compartment air.

Agree....but I would put vent hose close to main air filter. Smoke come out from oil tank breathing hose while waiting for traffic light does not look good.

BMAN · 07-31-2011, 04:15 AM

Thanks guys... race911turbo, what filter company did you use? Part numbers by any chance? Thanks

race911turbo · race911turbo's Garage

Quote:

Originally Posted by BMAN

Thanks guys... race911turbo, what filter company did you use? Part numbers by any chance? Thanks

I order from Simota #1 air filter comapny in Taiwan, I have regular cloth type and stainless steel screen race type. If you want to try it I will sell regular type kit for $70 USD, stainless steel screen kit for $90 USD. Shipping included.

ibanezjs · 08:49 AM

Quote:

Originally Posted by race911turbo

I order from Simota #1 air filter comapny in Taiwan, I have regular cloth type and stainless steel screen race type. If you want to try it I will sell regular type kit for $70 USD, stainless steel screen kit for $90 USD. Shipping included.

Hello

When you use this kit, where do you connect or how, the hose comes from the WUR , the one is going normally to the air box?

Sorry for my English, i'm from France.

race911turbo · race911turbo's Garage

WUR and idle control valve hose is connect to intercooler, the hoses go to air box are oil tank breathing valve and fuel tank breath valve.

ibanezjs · 11-07-2011, 09:32 AM

I talk about this hose:

race911turbo · race911turbo's Garage

That is not a hose connector, leave it open.

ibanezjs · 11-07-2011, 10:34 AM

Quote:

Originally Posted by race911turbo

That is not a hose connector, leave it open.

Thanks

Ronnie's.930 · 11-07-2011, 06:17 PM

Isn't that the "breather" port for the diaphram? If the diaphram ruptures gas flow out of this.

oilonly · 11-07-2011, 08:10 PM

Quote:

Originally Posted by Ronnie's.930

Isn't that the "breather" port for the diaphram? If the diaphram ruptures gas flow out of this.

Yes. I have a hose connected to it and then running to the bottom of the engine. If it ever breaks fuel will spill on the ground instead of on top of the engine.

JFairman · 11-08-2011, 05:58 AM

Quote:

Originally Posted by oilonly

Yes. I have a hose connected to it and then running to the bottom of the engine. If it ever breaks fuel will spill on the ground instead of on top of the engine.

That'll work.

I have a K&N air filter on top of the air flow meter so I drilled a hole and put a small brass elbow in the rubber top and ran a vent hose from the WUR to it. If the WUR vent line decides to take a leak the motor will probably start to cough black smoke and let me know somethings up.

The recently posted picture of a 930 burnt down on the side of the road one night somewhere in europe inspired me to do that.

DSPTurtle · 11-08-2011, 06:40 AM

Quote:

Originally Posted by race911turbo

Agree....but I would put vent hose close to main air filter. Smoke come out from oil tank breathing hose while waiting for traffic light does not look good.

I totally agree on this one... it is the only thing keeping me with the stock air box. I love the access the small filter provides, but I hate the smoke puffs that come from the oil tank and the turbo drip tank vent lines. Anyone got a solution for that?

oilonly · 11-08-2011, 03:23 PM

Quote:

Originally Posted by JFairman

That'll work.

I have a K&N air filter on top of the air flow meter so I drilled a hole and put a small brass elbow in the rubber top and ran a vent hose from the WUR to it. If the WUR vent line decides to take a leak the motor will probably start to cough black smoke and let me know somethings up.

The recently posted picture of a 930 burnt down on the side of the road one night somewhere in europe inspired me to do that.

Nice idea. Yes that picture of the burnt 930 makes me think twice also. I always carry a fire extinguisher now.