BISS Cap

[Lofty]

Is it needed?
I lost the cap to mine today, and looked everywhere =/
So is it really necessary?

 

[snowborder714]

No.

The part number is MD614150 if you want to get a new one.

 

[Lofty]

No.

The part number is MD614150 if you want to get a new one.

Why thank you sir

Ps, I actually thought about registering with something to do with snowboarding.
My favorite sport!

Thanks again!

 

[z24frank]

If its not needed then why does he need the part number?The reason I ask is I am in the same boat.

 

[blcknspo0ln]

Some people are picky about keeping there cars completely stock, hence the reason why Brian included it in his response. I personally don't think I've ever seen a stock one on a car before

 

[VergeTSi]

i read somewhere that without the cap there's a chance vibrations can make you loose the biss screw, anyone else ever hear this?

 

[1992awdlaser]

RTV is my biss cap. And it prevents boost leaks from happening.

 

[snowborder714]

I personally don't think I've ever seen a stock one on a car before

Obviously you didn't pay close enough attention to my car then

 

[Auto RS T]

I think the cap helps keep dirt/corrosion out of the BISS threads, making the screw easier to turn up and down. Some BISS screws are steel and not plastic, so I could see that being a problem with the dislike metals. Like 1992awdlaser said, I"ve seen them filled with RTV too. I don't run a cap, but I do give that hole a shot of compressed air at oil change/BLT time, just to get any crap out. Running the cap is mainly personal preference.

 

[Defiant]

If you give the head and threads a blast of WD-40 before using the RTV, it'll be a lot easier to take out when you need to.

 

[blcknspo0ln]

Obviously you didn't pay close enough attention to my car then

Now that is a must see.

 

[1gDSM4g63]

Leak may happen with the BISS cap missing if the o-ring old or the BISS screw is just old and stripped.

Extreme PSI BISS materials

 

[snowborder714]

Now that is a must see.

BAM!

 

[z24frank]

Wow im actualy going to order that cap now just to be in the BISS club.No really I am going to order it tomorrow.

 

[DSM_PWR]

You'd think vendors would ship it in an envelope but nope... ina $5 package