BISS Screw leaking during boost leak test

[horizontalkev]

Several questions. My BISS screw is bubbling up during a BLT, can I simply count the revolutions it took to remove it, replace Oring, then reinstall it with the same number of revolutions and call it good? Or does this throw off the TPS somehow?

Also, have a leak on the top adjustment nipple of my Aeromotive FPR.. Is that allowed to leak?

And during my test I couldn't gain more than about 6PSI with the only thing I can get my hands on to do my blt, and that was one of those ciggarette lighter compressors (Slime) that claim it does the job in 8 minutes. Bad choice, or bad leaks? Maybe valve overlap?

One more thing, I hear a clicking noise in the throttle body area during and after the test that wouldn't go away until I turned the ignition off. What is it?

Areas I have found leaks leaks, One tiny crack underneath one of my lower IC pipes pulled it off and welded over the crack and on my UIC pipe a significant leak on one of the couplers, tightened it down and good to go. But since I couldn't get the test past 6psi so I'm sure I'll have other spots to fix aswell.

Thanks

 

[Diamond Star Werks]

Cheapest fix for biss would be to fill it with grey silicone and call it a day. If you were too replace oring, count revolutions going in till it stops. And when you install with new o-ring and biss cap, turn it all the way in then back that number of turns. Tps will be fine.
Fpr, well you need to call aeromotive and tell them to fix it if its new or get them to if its not. It shouldn't leak at all.
With that compressor you won't build much pressure till you seal leaks. It won't hold much with leaks.

 

[Mischif]

You can get the o-ring for the biss screw from lowes. Its like 2 bucks for a pack of 10. Brand is danco and its the #5 oring.

 

[horizontalkev]

I thought about using the silicone and do it the lazy and quick way, but if a seal or oring inside of the throttle body were to need replacing wouldn't that BISS screw need to be removed? And the fpr is atleast 6 years old. Car sat since early 2007 and I picked it up 3 month ago. All it needed was a clutch.

would the silicone route be bad? And whats that clicking noise I heard?

 

[Diamond Star Werks]

Just do what I said with the oring way.
The fpr can probably be fixed.

 

[Mischif]

You can use plumbers tape and wrap it around the threads of the adjusting screw on the fpr. That should seal the leak.

 

[horizontalkev]

You can use plumbers tape and wrap it around the threads of the adjusting screw on the fpr. That should seal the leak.

Ill have to readjust my base fuel pressure right? I'm to lazy for all this but gotta do what I gotta do.

Just do what I said with the oring way.
The fpr can probably be fixed.

Alright i'll buy that tomorrow thanks sir. Do you rebuild throttle bodies aswell? I might need one

 

[NHerron]

Cheapest fix for biss would be to fill it with grey silicone and call it a day.

You mean laziest way? 50¢ oring vs $3.99 rtv...

Fpr, well you need to call aeromotive and tell them to fix it if its new or get them to if its not. It shouldn't leak at all.

Incorrect. They do in fact leak. http://aeromotiveinc.com/wp-content/uploads/2010/07/13129.pdf

With that compressor you won't build much pressure till you seal leaks. It won't hold much with leaks.

Youre forgetting cylinders dont seal statically, you wont keep pressure in the system for long after the air source is disconnected. Thats where a higher volume air compressor comes in, one that can keep up with the [wasted] airflow.

 

[@TDC]

You can get the o-ring for the biss screw from lowes. Its like 2 bucks for a pack of 10. Brand is danco and its the #5 oring.

What section of lowes were these o-rings in???

 

[xxNocturnalxx]

I would just order the OEM one..

EXTREME PSI : Your #1 Source for In Stock Performance Parts

 

[my dreamt dsm]

I just use teflon tape and call it a day! No more boost leak from the biss screw.

 

[horizontalkev]

You mean laziest way? 50¢ oring vs $3.99 rtv...

Incorrect. They do in fact leak. http://aeromotiveinc.com/wp-content/uploads/2010/07/13129.pdf


Youre forgetting cylinders dont seal statically, you wont keep pressure in the system for long after the air source is disconnected. Thats where a higher volume air compressor comes in, one that can keep up with the [wasted] airflow.

So the page said it won't hurt the performance of the regulator, but does it hurt the turbos performance? I'd imagine a small affect.

Today going to walmart and buying a cheap air tank (doesn't have a pressure gauge) that I can fill at the gas station next door and just have somebody watch the boost gauge in the car.

I just use teflon tape and call it a day! No more boost leak from the biss screw.

Is teflon the answer to every problem? Lol seems like everyone uses that as a miracle problem solver.

Hey whats 15*10=? Answer is Teflon Tape bi*ch!

 

[Mischif]

What section of lowes were these o-rings in???

In the faucet/plumbing section i think. Its where they have a bunch of o-rings and rubber seals and grommets for sinks, toilets and faucets. I think its the same section where they have all the steel braided hoses for washers/dishwashers.

#5 o-ring. 3/8" O.D x 1/4" I.D x 1/16" part number 96722

 

[plymouthlazer]

these are pretty small leaks, and they are decimated by the extremely high volume of air moved by the turbo. Good to have them fixed but certiantly not going to have a huge impact on how the car runs.

 

[my dreamt dsm]

really. I did use teflon tape. Haven't boost leak in over 7 blt test. I spray soap water there to test for boost leaks and literally it will stay there till it evaporates or I wipe it off.

 

[NHerron]

Heh... math and tape. Good one.

 

[horizontalkev]

Heh... math and tape. Good one.

Sarcasm?

 

[NHerron]

No it was funny I'm just nonchalant lately... Been lacking the enthusiasm.

How'd the BLT go?

 

[horizontalkev]

Oh I know what you mean..

And I haven't redid the test yet I bought an air tank I just need to fill it up and give it a go. As for the biss screw, teflon tape until I can order the oring. My boss had some at his shop so I used it