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Old 24-04-2022, 02:26 PM   #1
290GTP
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Default BMC air filters

Hey guys, just went to service my, admittedly old BMC Filter, only to discover that the red silicone seal has basically self destructed. If you have a BMC I'd suggest you give it a once-over.





My main concern is that a good chunk of silicone has been sucked into the engine. I pulled the plenum and throttle body with no trace of any red silicone. Hopefully no damage has been done.

Think I'll be putting a genuine Ford Filter back in instead.
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Mercury Silver 03 BA GT-P Tremec TR3650 Number 534


Herrod 4 into ones, Manta Exhaust, CAI, K&N Filter, Mellings oil pump, 19" FPV alloys, Bilsteins, Kings, tuned by Autotech, 272rwkw

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Old 24-04-2022, 02:52 PM   #2
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Default Re: BMC air filters

Wow. I thought bmc were one of the good brands. Now for my dumb question. It looks melted. Does the car ever backfire out the intake? I know thats typically if anything an issue for lpg or carby cars.
Only reason i ask is the old bloke i used to work with has a 61 studebaker hawk. It has the carby hat from a supercharged golden hawk, but no supercharger. So he has a k&n pod filter on the end of the hat. He keeps spares in the boot, and spare fire extinguishers. On the rare ocasions that thing gets driven, when it backfires through the intake the airfilter often catches fire.
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Old 24-04-2022, 02:57 PM   #3
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Default Re: BMC air filters

In person, it actually looks ripped, not melted. It's pretty thick silicone too.

The car never backfires, but a couple of drives ago I gave it a boot full and it cut out at stopped at around 4.5 grand. I pulled over and it restarted after a couple of goes.

I'm thinking the almighty Boss 290 tore the Filter a new one.
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Mercury Silver 03 BA GT-P Tremec TR3650 Number 534


Herrod 4 into ones, Manta Exhaust, CAI, K&N Filter, Mellings oil pump, 19" FPV alloys, Bilsteins, Kings, tuned by Autotech, 272rwkw

RIP Fish 15/1/73 - 9/2/19
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Old 24-04-2022, 03:33 PM   #4
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Default Re: BMC air filters

What were you using to clean it with maybe that caused it to break down. Had one for a few years no problems.
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Old 24-04-2022, 03:41 PM   #5
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Default Re: BMC air filters

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Originally Posted by five 7 View Post
What were you using to clean it with maybe that caused it to break down. Had one for a few years no problems.
K&N Filter cleaner and oil. As I stated above, it's a pretty old filter and I'm not too bothered about it. But I didn't expect it to **** itself the way it has.
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Mercury Silver 03 BA GT-P Tremec TR3650 Number 534


Herrod 4 into ones, Manta Exhaust, CAI, K&N Filter, Mellings oil pump, 19" FPV alloys, Bilsteins, Kings, tuned by Autotech, 272rwkw

RIP Fish 15/1/73 - 9/2/19

Last edited by GasoLane; 24-04-2022 at 05:42 PM.
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Old 24-04-2022, 04:35 PM   #6
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Default Re: BMC air filters

Wow. I used BMC in my BA XR8 a long time ago, they were very reputable back then.

When was the last time you took the filter out of the houing? Was it stuck to the housing when you pulled it out, and caused it to rip?
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Old 24-04-2022, 04:52 PM   #7
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Default Re: BMC air filters

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Originally Posted by T3rminator View Post
Wow. I used BMC in my BA XR8 a long time ago, they were very reputable back then.

When was the last time you took the filter out of the houing? Was it stuck to the housing when you pulled it out, and caused it to rip?
No, the Filter was sitting on the bottom of the housing. Part of the circular seal was still on the rim of the housing & the rest of the mess was on top of the filter. Pretty amazing considering the silicone is about 13mm thick
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Mercury Silver 03 BA GT-P Tremec TR3650 Number 534


Herrod 4 into ones, Manta Exhaust, CAI, K&N Filter, Mellings oil pump, 19" FPV alloys, Bilsteins, Kings, tuned by Autotech, 272rwkw

RIP Fish 15/1/73 - 9/2/19
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Old 24-04-2022, 09:30 PM   #8
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Default Re: BMC air filters

I had the same happen to my BMC panel filter. After about 10 years the silicone just fell apart as I was taking it out to clean. I would take it out once a year for a clean.
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Old 24-04-2022, 10:34 PM   #9
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Default Re: BMC air filters

Exposure to Silicone oil can cause that sort of damage. So too can the combination of over-compression, and long term compression set.
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Old 26-04-2022, 08:41 AM   #10
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Default Re: BMC air filters

How hard is it to get in to the inside part/cone to re-oil on the BMC filters?

Im just running a K&N and no issues. (FG GT).
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Old 26-04-2022, 11:40 AM   #11
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Default Re: BMC air filters

Quote:
Originally Posted by 290GTP View Post
K&N Filter cleaner and oil. As I stated above, it's a pretty old filter and I'm not too bothered about it. But I didn't expect it to **** itself the way it has.
K&N was all I used as well. To be honest can't go wrong with stock paper when new and clean, they are cheap enough to replace, scares me a bit when you hold a oiled cotton filter up to the sun.

Last edited by five 7; 26-04-2022 at 11:52 AM.
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