BLT and really loud leak but...

[97gsx_zeclipse]

Did a boost leak test and heard a really loud hissing at the 90 degree rubber coupler from the j-pipe to the lower IC pipe. I have a metal lower IC pipe by the way. When installed the big 16g turbo, I forgot to get a silicone couper to connect from the j-pipe to the lower IC pipe. So I cut the old lower IC rubber pipe and used that to conect the 2. Well did a BLT after the install and hear a really loud hissing at that coupler. I take it out and inspect the inside of the coupler and see no rips or holes at all. I have tbolt clamps and made sure they were on there firm. So how is it possible to have that big of a leak when I don't see any holes on the inside of the coupler? Should I just spend the 30 bucks and get a silicone 90 degree coupler? Or is there something I'm missing? Thanks

 

[markp]

Did a boost leak test and heard a really loud hissing at the 90 degree rubber coupler from the j-pipe to the lower IC pipe. I have a metal lower IC pipe by the way. When installed the big 16g turbo, I forgot to get a silicone couper to connect from the j-pipe to the lower IC pipe. So I cut the old lower IC rubber pipe and used that to conect the 2. Well did a BLT after the install and hear a really loud hissing at that coupler. I take it out and inspect the inside of the coupler and see no rips or holes at all. I have tbolt clamps and made sure they were on there firm. So how is it possible to have that big of a leak when I don't see any holes on the inside of the coupler? Should I just spend the 30 bucks and get a silicone 90 degree coupler? Or is there something I'm missing? Thanks

I was wondering if you did a BLT before you put the turbo in to see if it the lower rubber ic pipe was leaking or not. I currently have the same set up: j pipe to a cut, stock rubber intake pipe connected to a metal intercooler pipe and it doesn't leak at all. So, it does work.
If I were you, I'd play with the position of the t bolt clamps to see if maybe it was just the placement of them causing a leak, and if that doesn't work then your old rubber pipe was probably leaking. I'd then probably just buy a 90 degree silicone coupler.
Have you tried the soapy water method? Spray soapy water all over that connection and see where exactly it's leaking (you'll see bubbles coming out).

 

[97gsx_zeclipse]

Thanks, I didn't bo a BLT before the turbo install, so its prob the rubber cut hose. But the thing is I don't see any holes or rips anywhere inside that thing.

 

[Mr Peepers]

I agree with what Markp said.

Spraying soapy water on it was the first thing that popped into my head; that way you can see if it's the coupler itself or the connection.