mt_goat

Anyone put an EGT probe into a newer style manifold like this 2001 5VZFE? http://community.webshots.com/photo/...42310107HWyloW

If so, how thick are they? Are they single wall tubing?

mt_goat

No one?

eric-the-red

I haven't drilled into mine but from hitting them with tools doing plug changes etc they sound about as thick as a beer can. Whether that's the actual manifold or some outer layer I don't know. Sorry I couldn't be more helpful.

mt_goat

Well I took off the crossover and looked inside and there was my answer. It is double walled. The outer welded seam is not on the inside. This will really complicate welding a bung on the manifold because I would want to seal up both the inner and outer walls. I guess I'll put the probe down stream where my custom crossover starts as it is just single wall tubing. It won't be as hot there but at least it will get an average temp of 3 cylinders.

rimpainter.com

Dale -

How about the EGR port on the driver's side manifold? That's where I am planning on putting mine. My plan is to weld the bung to the block-off plate. Of course, I haven't really looked into this yet, but that's the plan.

I have been reading around on the net and what I have read has indicated the probe location should be determined by the inner diameter of the manifold runner. So, if you are 1.5", you would want the probe .75" from the edge of the port. Whether that's true or not, I have no idea.

It just seems that the EGR port is an ideal location for me, especially since I have HPC on everything but the block-off plate for the EGR port.

mt_goat

Hi Christian, appearently around 2000 and later there is no EGR port or valve. They went from the older cast iron manifolds to a tubular manifold with double walls. Here is a better pic of one: http://community.webshots.com/photo/...42310107prOpPl

eric-the-red

Correct, my 01 has no EGR port, in fact it has no egr from what I can tell

rimpainter.com

Well, FWIW, no 4Runner (that I know of) has an EGR system. My understanding is that they simply used the same cast manifolds as the Taco to keep manufacturing and tooling costs down.

Anyway, that is very interesting info. I didn't know they switched the exhaust manifold design at all. Makes sense though, because my 5VZ is quite "valvey" at various RPMs. The 2000 I had was not like that at all. It was much smoother.

Enough blabbering from me. Thanks for the info!

snap-on

carefull .... all 3vze (88-95.5) have EGR valves for shure and a majority of 4runners for those years had the 3vze in them.

rimpainter.com

Sorry, I should have clarified: 3rd gens is what I meant

snap-on

i figured as much which is why i didnt jump ALLLLLL over ya

mt_goat

Just to update, this is where I put the EGT probe:
http://community.webshots.com/photo/...42310107UzfvzT
https://www.yotatech.com/attachment....achmentid=9391

rimpainter.com

Looks good! Have you had a chance to test it yet? Do you know about the probe grounding problem that Autometer had with their probes?

If you turn the ignition to ON and the needle bottoms out (past 0), then you have the problem. I am assuming you have an Autometer probe though...

Anyway, the EGR port didn't work for me. I am only getting 600*F maximum even under full boost. I have played around with it and managed to get the probe farther in, but it still didn't work right. Guess I will be selling my set-up since I can't weld on HPC-coated headers and the last thing I want to do is pull the header anyway.

mastacox

Man, you're lucky its so easy to work on your engine with it sitting on an engine stand and stuff. I get the feeling its going to be a royal PITA to install an EGT probe on my new 4Runner.

mt_goat

The engine is still on the stand, so no testing yet. It is an Isspro gauge and probe.

Bummer, I wonder if you got a sender for a 24 volt system or something? Here's a pic of my probe depth.

mt_goat

It makes things a lot easier with the engine out. I've seen a good muffler installer weld the back side of pipe he couldn't even see. Reminded me of the Pinball Wizard.