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Old 03-31-2020, 10:37 PM   #78
IROCZman15
10 Second Club / Meet Coordinator
 
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Join Date: Dec 2004
Location: Roxbury, NJ
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If it helps, I can post the cam specs/cam card again, but I know there is a photo of it on page 1 of this thread.

- as for vac, I checked it again today. I checked it directly at the 3/8" vac port at the back of the sniper and the PCV line was plugged. gauge shows still right around 8.5", mayyyybe 9" of vac. needle bounces a slight bit.. it is a steady rhythmic bounce, not erratic or jumpy , but a steady pulsing bounce.. I have sprayed starting fluid all around the intake, hoses, sniper etc and have noticed ZERO signs/symptoms of any vacuum leaks.



I was doing some thinking last night and as much as I really really hate the idea of extra items/hoses/etc in the engine bay, I might start looking into the catch can OR remote breather setup. mayyybe. I've so far learned that a catch can is different than a remote breather tank and thats different than an evac system and thats different from a vac pump setup. Reason being, mostly, I am slightly uncomfortable with sucking the crankcase vapors back into the intake and "dirtying" the intake/valves up on a brand new engine. Its unsettling, but I know it is common and used by manufacturers globally. Would feel more comfortable in the long run if I kept the intake as clean as possible, especially with everything so new and fresh.
---So, hillariously, just as I have finally seemed to find a PCV/hose setup that appears to work great, I might start thinking about re-vamping my system. !! jeez !

Some research I did shows that 8.5-9" of vacuum is on the lower end of a street setup, but is not drastically too low. My brakes work just fine and PCV valve seems to be doing its job just fine also
---- Today I took out the one breather I have (pass side valve cover) and held a paper towel to the opening at the valve cover and it is being slightly pulled into the valve cover. Used my hand there too and it is sucking my skin in. this is good. this means I have vacuum there. right? right. next, while doing this same process, I took out the PCV valve and plugged its hole/opening with my other hand, which pretty much immediately resulted in NO more suction at the valve cover hole where the breather usually is, and it began emitting a pressurized "smoke" vapor. After a few seconds of this test, I uncapped and reinserted the PCV valve and right away the passenger valve cover opening stopped smoking and began having suction again. good? yes? To me, this is all great and is the way it is supposed to be functioning right? I think it is, but perhaps hearing it from someone more experienced will ease my concern. If this is good, I'll keep it like this while I do research and possibly decide about catch can or breather tanks, maybe


Finalized the TCC lockup. followed the advice above and simply grounded the tan wire to the nearby subframe. took the car for a ride. I can flip my toggle switch (which is my OEM fog-light dashboard switch) and I can lockup the converter in 2nd, in 3rd, and in 4th gear. awesome. a press of the brake pedal also unlocks it as it is supposed to do. I was happy to get this working. It will be nice to lock it and bring the rpm's down when cruising on the highway.

The tuner will be working on my next revised tune tomorrow and hopefully Thursday or Friday I will have it sent to me so I can do some testing/datalogging/etc. I am doing my best to view this logs and Global Config Files (*tunes) on the holley sniper software. some of it makes sense to me and I think it is really cool to see all this data, but most of this stuff is still over my head (for now) .


all in all, the car is doing good. unfortunately with the global pandemic and COVID-19 pandemic, all autocross events, car shows, drag strips, test and tune days are shut down..... so, I am really just slowly getting the car "sorted out" on the street locally and safely.
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1987 IROC-Z - modified

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