Engine/Transmission (1998.5 - 2002) pyro hook up

[Smokin Joes 2500]

When installing my pyro sendor do I need to disconnect the boost elbow? I heard someone say this. If so where is the boost elbow(remember I'm new)? Is it the metal tube that runs under the turbo? Help please... ... . thanks as always

 

[work2muchplay2little]

No, your turbo wastegate actuator line should not be disconnected under any circumstances. It may be adjusted to allow higher boost pressures - but that is another topic. Your pyro sensor or thermocouple needs to be placed in the exhaust stream. This means drilling and tapping a hole to fit the threads of your particular thermocouple. This can be placed in your exhaust manifold ahead of the turbo - the preferred place for monitoring your engine's condition; or may be placed post-turbo. Precautions need to be taken to get the drill shavings out if placed pre-turbo. Try a search on pyro or EGT gauge install - there are some good directions available. Hope this helps.

 

[Smokin Joes 2500]

I know about the wastegate actuator my question states "boost elbow". There is a hollow tube (about 1-1/4" in diameter) under the turbo??? What is the boost elbow??? I don't want the metal dust to blow the turbo.

 

[work2muchplay2little]

Originally posted by smokin joes 400

I know about the wastegate actuator my question states "boost elbow". There is a hollow tube (about 1-1/4" in diameter) under the turbo??? What is the boost elbow??? I don't want the metal dust to blow the turbo.

That 1 1/4" tube is likely the outlet from the compressor side of the turbo - does it lead to the intercooler? If this is what we are talking about - then no you do not need to disconnect it since there is no direct path from the exhaust to the compressor side of the turbo. A "boost elbow" is a part that's made to restrict the orifice in the waste gate actuator line to increase the amount of boost that can be developed before the waste gate opens. You likely have the HY-35 which has a hard-lined waste gate tubing and can not use a "boost elbow". The most certain way to avoid metal shavings being introduced into the turbo is to take it off when drilling and tapping your EGT probe hole. Or, like I and others have done, pack your drill and tap with grease or vaseline and remove frequently, clean and repack to pull the filings out - then stick a small magnet on a rod and "suck up the rest".