Bad Cat Equal No Boost??

[DaveyX87]

My friend's 87 blew the gasket on the bottom of the turbo. After replacing it the car has no boost. It feels very restricted. The cat appears to have a hole and sounds like a tea kettle. Has this happened to anyone? Can the cat be the problem? I appreciate the feedback.

 

[michael evans]

Depends.

If the cat only has a hole in it, No. If the cat is stopped up, Yes.

Got to have flow.

 

[Chuck Leeper]

Short answer is yes.
If the cat has been overheated, the brick can melt, causing serious backpressure.
Pull the cat off the dp, and see if the boost comes back.
A hole could mean it was seriously clogged, and the shell melted from extreme heat. As in over 1000*F.

 

[pacecarta]

^^ as he said ... cat ceramic core can melt and plug up

 

[DaveyX87]

Wow! Thanks! We will pull it off after work and see. Im pretty sure this is the problem.

 

[DaveyX87]

The cat was definitely the problem. The car is now running better than ever. Thanks again!

 

[Chuck Leeper]