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1G Boost leak I can't find with BLT.

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gusu

10+ Year Contributor
1,949
32
Sep 9, 2009
Independence, Oregon
So I replaced my SMIC with the VRSF FMIC and replaced the J-Pipe/TB/BOV gaskets with OEM gaskets as well. I used thread tape on the J-Pipe barb fitting as well as the BOV flange. I used all new clamps for the BOV return line as well as the vacuum line and the J-Pipe to wastegate vacuum line.

I used a angle grinder to cut off all the "nipples" that are no longer used minus the valve cover breather which I have a my catch can in between. Once I cut them off I filled them in with JB Weld and let it cure for an hour and a half. Then I put the coupler over those areas as well.

For the intercooler couplers I used the T-bolt clamps that the kit comes with. I tightened them til they maxed out and made sure the couplers went over the piping as much as possible on boh connecting pipes. They are on there TIGHT.

The J-Pipe was a bi*** but I did manage to get those bolts torqued down.

When I start to make boost, even 1 PSI it makes a SQEEEEE sound like a f***ing kazoo. I did a BLT to 30 PSI (I only am running wastgate) and hear/see no boost leaks when I use soapy water.

But sure enough you hit boost AT ALL and it starts making the damn noise.

Any ideas?
 
How did you manage to get the bolt that was semi-covered by the J-Pipe fully tightened? I can barely fit a tiny 12mm wrench on it.
 
I had considered shaft play. The turbo has zero shaft play in/out or side to side. I'll have to look into allen bolts.
 
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