turbo install, but no pyro port?!

[kapnklug]

Installing a GM-3 turbo on my '86 M1009 using salvaged parts from a 93 K3500 6.5 TD. Problem is, there are no ports on the intake or exhaust manifolds at all for installing the boost and pyrometer senders. I don't mind drilling and tapping the aluminum intake, but i'm not gonna drill and tap that cast iron exhaust manifold. I'm thinking of mounting the pyrometer in the crossover pipe close to the driver's exhaust manifold, by welding on a double-female pipe fitting over a hole drilled into the pipe. Anyone else encounter this problem?

 

[m16ty]

Why wouldn't you drill and tap the manifold? I'll admit I'm not too familiar with the GM diesels but I've never seen an engine where this would be a problem. You really need the probe to be installed pre-turbo to get an accurate reading.

 

[3dubs]

Get the exhaust and intake manifolds from the junk yard. They are cheap.

 

[ODdave]

The correct place to put the pyro is in the manifold just before the turbo. You have to drill and tap it , anything else is a waste of time and money!

 

[67_C-30]

The 6.5 didn't come from the factory with a pyro, so there would be no place for one.

 

[kapnklug]

Where do they usually go, in the pass. manifold? In thru the side?

 

[ODdave]

Its not a 6.5 but this is where i installed the probe on the dodge. This is where you will get the most acurate reading from. it should give you and idea.