Agreed 100% lol

 

Look what somebody used for a freeze plug on my engine

 

Done.
Mine topped out at 210 while idling then dropped a tad. Of course when I pulled the sending unit plug the retaining tab broke. Such is life.

 

What is a drain plug?

 

update. Jeep won't start now. Can a TPS cause a no start?
Cranks. Wants to fire just won't.

 

I think so. It is leaking. This will be my project in a few weeks.

It has held for the 4 years I have owned the Jeep and is only leaking after I drive and get it up to operating temp then let it sit.

RSWiser

 

No

 

On the 4.0 1999 Cherokee, it the dent in the connecting pipe to the exhaust manifold to create back pressure?

RSWiser

 

I believe it's for drive shaft clearance

 

It's to heat the exhaust for catalytic converter efficiency. If you remove it, you'll gain a couple horsepower and lose a little torque

 

You'll gain horsepower, torque and throttle response. Be sure to have your muffler guy tuck the pipe up close to the motor when he builds it.

 

I've been told low RPM torque suffers, but I don't have the requisite knowledge of exhaust flow to argue the point

 

Bacon. "Canadian bacon" is what we call "back bacon". If you order ham you'll get ham lol.

 

Maybe with a totally amputated exhaust. Removing the crush should help scavenging by reducing backpressure. But scavenging (and requisite velocity) is still maintained because there's a pipe.

As I've understood it, anyway

 

I drove my Comanche with an undefined but severely amputated exhaust system for months. It was awful for many reasons, but it was better performing than the crushed exhaust and broken muffler that were previously on it.

Bottom line, I don't think anybody is gonna notice a difference with the downpipe crush there or removed. Removing it may make it more difficult to pass emissions in any particular place, but it isn't considered emissions equipment.