So I finally did, I installed gauges. I went with the Dipricol guages and full pillar mount for EGT and Boost (I have the ZF/6, so I didn't need the tranny gauge).


I drilled out my exhaust manifold to 7/16" and then used a 1/4 NPT tap to tap out the hole as instructed. I finally got the tap into about 1/2 way which seemed far enough. I then applied the hi-temp anti-seeze compound to the fitting and screwed it in and then tightened.


The problem is, I suspect I may not have the hole tapped out enough since I only have probably 4 turns (at the most) in the hole. The fitting is about 1/2" long (the threaded portion) and there's a good 1/4" sticking out. It's good and tight but I am worried that I don't have it tapped enough and perhaps it might decide one day to blow out and that wouldn't be a good thing. :-(


Does it matter how far the fitting is screwed in as long as it's catching all the threads tapped in the manifold? Should I tap it some more to get it to screw all the way up to the collar of the fitting or at least closer to the collar so that it screws into the manifold further? It doesn't seem like it would not make a difference, but I thought I would ask. The other thing is that the probe sure seems like it sticks through the fitting quite a ways and if were to tap it some more and screw it into the manifold further, the probe will be that much further into the manifold.


Thanks,


Tim

Yeah I ran the tap in about almost all the way. I kept checking the fixture to make sure I dint over cut the threads.

I used the clamp! Much easier. Also drilled at my leisure on the bench...


Luvthesmell, what program are you running? You happy with it?


Tx

I am currently running a Quad 135 and love it. I am getting ready to get it retuned and am thinking of upgrading to the 165 assuming it has the 110 and 135 settings on it.


Tim

No touchy pedal problems at lower speeds (under 30)?


Im trying to find the way to go with mine...


Thanks

Should I tap out the hole a little more and get the fitting deeper into the manifold then?


Tim

Should I tap out the hole a little more and get the fitting deeper into the manifold then?


Tim





I wouldn't. As long as the threaded portion is completly in the manifold your better than good IMHO. putting several threads into the exh. flow won't make anything stronger or hold better, just only slightly increase restriction / turblence in the exh. flow, not enough to make any real difference surely. I try to hold to the adddage, if it ain't broke don't fix it. It sounds to me your not broke. BTW I believe it 's ideal to have the tip of the thermocouple in the center of the exh. flow.Edited by: a64pilot

Right on the money a64pilot. Later! Frank

If it's working, leave it alone. Trust me!

If it's working, leave it alone. Trust me!

As long as there are enough threads so it doesn't fall out and it's nice and tight, don't sweat it. It doesn't need a perfect seal either. Very little pressure there.

Thanks everyone for the info. I'll leave it be then. I must say, I do like having guages. I should've got them a long time ago. I should get around and put my 4" exhaust system on that is still in the box now...


Tim