No boost to vary low boost

[precizion818]

This is essentially how I did it. I could actually hear air going into the crankcase when I did mine

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[gn dennis]

This is essentially how I did it. I could actually hear air going into the crankcase when I did mine

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That was vary help full. Thanks

 

[TurboBuRick]

Ah jeez, the better way is done with a shop vac. Put the hose on the exhaust side of the vacuum so blows instead of sucks. Then plumb the other end of the hose to the intake pipe or turbo inlet.

You can also plumb it to one of the exhaust pipe and plug the other one to find exhaust leaks.

Have fun

 

[TurboBuRick]

You have a pretty major leak. It’s going to be obvious one you flip on the vacuum and I highly doubt it’s a intake gasket.

 

[gn dennis]

You have a pretty major leak. It’s going to be obvious one you flip on the vacuum and I highly doubt it’s a intake gasket.

Thanks vary much Rick.....that sound like a good way to go. I will keep everyone posted

 

[gn dennis]

You have a pretty major leak. It’s going to be obvious one you flip on the vacuum and I highly doubt it’s a intake gasket.

Well Rick you were right on. 90% of the leaks were around where the exhaust el meets the exhaust side of the turbo. And where the down pipe connect to the exhaust el, the el that connects to the turbo. It looks like the elbow is to small to make a good seal on the machined surface of turbo so I need to replace that. I used a donut exhaust seal at the elbow connects at the down pipe. Any help would be appreciated

 

[John Larkin]

What kind of turbo do you have that a stock elbow doesn't fit? Provide lots of photos please. If the elbow does not fit right, then the puck is not covering the wastegate hole and that is why you are barely building boost. It has to be this.

 

[gn dennis]

What kind of turbo do you have that a stock elbow doesn't fit? Provide lots of photos please. If the elbow does not fit right, then the puck is not covering the wastegate hole and that is why you are barely building boost. It has to be this.

I have owned the car for 7 years. The has always run ok , it just started to act up in the last few days. i was surprised when I pulled the elbow off how little it covered the mating surface of exhaust side of turbo. When I pressure tested I couldn't believe how much leakage there is. I think what I may do is replace the elbow and down pipe with an internal puck any suggestions are welcome. Thanks Dennis

 

[gn dennis]

I have owned the car for 7 years. The has always run ok , it just started to act up in the last few days. i was surprised when I pulled the elbow off how little it covered the mating surface of exhaust side of turbo. When I pressure tested I couldn't believe how much leakage there is. I think what I may do is replace the elbow and down pipe with an internal puck any suggestions are welcome. Thanks Dennis

I have tried to post pictures no luck. I don't know what turbo is on the car. The last owner replaced the original with this larger one and reused the elbow. The down pipe set up is also part of the leak, to many connections.

 

[TurboBuRick]

I have owned the car for 7 years. The has always run ok , it just started to act up in the last few days. i was surprised when I pulled the elbow off how little it covered the mating surface of exhaust side of turbo. When I pressure tested I couldn't believe how much leakage there is. I think what I may do is replace the elbow and down pipe with an internal puck any suggestions are welcome. Thanks Dennis

Food for thought.

Pre turbo exhaust leaks will effect boost.

Post turbo exhaust leaks will not.

 

[gn dennis]

Food for thought.

Pre turbo exhaust leaks will effect boost.

Post turbo exhaust leaks will not.

If the leak is between the machined face of the cast elbow and where it meets the machined face of the exhaust side of turbo does that not effect boost?

 

[Gary Durden]

Maybe you could email the pics to one of the members who could post them for you.

 

[gn dennis]

Maybe you could email the pics to one of the members who could post them for you.

 

[gn dennis]

You have a pretty major leak. It’s going to be obvious one you flip on the vacuum and I highly doubt it’s a intake gasket.

 

[gn dennis]

We finally got the pictures posted. it leaks all around that flat surface on that second and third picture. So is that a pre or after turbo leak?

 

[TurboBuRick]

After

 

[TurboBuRick]

The only thing that effects boost after the turbo is the wastegate puck. Make sure is covering the hole which it looks like it is, and make sure the hinge point is not sticky.

 

[gn dennis]

The only thing that effects boost after the turbo is the wastegate puck. Make sure is covering the hole which it looks like it is, and make sure the hinge point is not sticky.

The only thing that effects boost after the turbo is the wastegate puck. Make sure is covering the hole which it looks like it is, and make sure the hinge point is not sticky.

The only thing that effects boost after the turbo is the wastegate puck. Make sure is covering the hole which it looks like it is, and make sure the hinge point is not sticky.

Thanks Rick, what else should I look for that can effect boost?

 

[TurboBuRick]

Welcome sir. Jump under the car and check the crossover pipe. There is a 2 bolt flange on both sides. Make sure the bolts are there and the pipe is tight.

 

[John Larkin]

In photo #3, the black circle caused by the turbo outlet is very close the edge of the elbow flange. I now see what you mean about it not fitting well. Seriously get some antiseize and put a thin coat on the flat side of the elbow and the wastegate puck, install it, seat the puck to the turbo flange a few times and then remove the elbow. See what the pattern looks like and make a couple more photos. This will identify any problems.