Topic: Exhaust manifold question

[Petzl21]

What is the tube that goes on top of my exhaust manifold.  i have an 84 4runner with the 22r.  Here are some pic's
is a pic of the tube:


Here is a pic of the manifold:



Every one of the 4 bolts that hold the strap down broke when i was removing them.  What can i do about this?  Can i just plug the exhause manifold, and the tube?

Thanks for the help,

Jay

[CTENG in KS]

DO you have to get the truck smogged?
The tube is part of the exhaust recirculation system.
If you don't, I would grab a set of headers...they will block off the holes in the head, then grab a set of block off plated for the EGR system from LCEngineering and get rid of all of it.

[Petzl21 [OP]]

Can i just plug the holes in the exhaust manifold, and leave the tube like it is?  What will that do?

[SACD_Runner]

did you use PB blaster on those at all or did you just torque them off? And yes what CTENG said is what i would do, Downy makes a great Tri-y for those 22r's that come with the block off stuff.

[SACD_Runner]

well sure you could block off the holes, which the new mani would do, but leaving the recirc tube open is not a great idea. It will push cold unfiltered air back through the intake. At the least get the block off kit from LC.

[DTB]

the EGR part of your emissions system. It recirculates exhaust gas coming out of the engine to burn off any unused fuel before they exit the exhaust.

[Petzl21 [OP]]

So, for a quick fix, i can tap the holes ontop of the manifold.  Could i just cut that tube,and put a cap on it, so no air goes thru it.  Will that mess with how my motor runs?

I dont have to worry about emissions, but i dont want the motor running like crap!

[DTB]

just make your own block off plate....

[Petzl21 [OP]]

Thats what i will do.  I just wanted to make sure that if i block off everything, it wont affect how it runs.

[SACD_Runner]

nope you should be fine. Yet why not just pull those broken bolts? or drill and helicoil?

[Petzl21 [OP]]

That is way to much effort.  I just need the manifold to work for a bit.  Untill i get a header!  I tapped the holes in the manifold and cap'ed the tube, and it worked great.

[SACD_Runner]

ok, good news.