Final Loose Ends on my RB26DETT Before Install---Need Help

[Scott Buwalda]

Hey guys:

Got some minor loose ends on my RB26DETT that I need to get clarified before I drop this thing into my S14 in a week or two...

Go here for the pics: http://www.missioninspection.com/01.htm

OK, photo #1 and #2 are of the intake side of the engine, the area beneath the collector assembly. These photos are specific to the air chamber beneath the collector. There are two rubber hoses going forward. I am just verifying what I think these tubes go to. The bottom one seems to go toward the factory recirculation valve. The top tube seems to go toward the carbon canister hard lines that run behind the cam gear cover. Is this correct? If so, a clarification of whether or not I need either tube. First, I am not using the factory recirculation valves. I will be going with aftermarket BOVs on the turbo side of the engine. So, I don't need this tube, and can simply cap it off? And the carbon canister has been removed from the car (who needs emmission, eh?). So, I can remove this tube as well, since there is no carbon canister anymore? Can I just do a U-shaped tube to connect these two tube nipples on the air chamber?

Photo #3 is of a pair of hard lines that exit the back side of the AAC valve and air chamber. I assume that one of these is for the brake booster, correct? If so, what's the other tube for? Help is definetely needed trying to figure out where these two tubes go.

Photo #4 is of the throttle linkage. I took this unit all apart, and got it back together, but as you can see by this picture, I am missing a few parts. How do the no. 1 and no. 2 throttle chamber linkages connect to the accelerator work unit? A simple up-close photo of a complete one would be best for me, verses trying to describe how the linkage connects.

Photo #5 and #6 is of a stray plug that we labelled "underneath intake plenum." I have no idea where it goes. Can't find anything in the FSM. It's a two-wire plug, probably a sensor, with a yellow with black stipe, and a black. It's not intake air temp, not water temp, not water pressure, not oil temp or oil pressure. What the freak is it?

Thanx in advance gentlemen!

Scott

[gawdzilla]

cool... a fellow rb26'er.

here's my attempt at your questions:the top hose in pics #1 and 2 (with the holes in the hose wrap) goes to a metal hose right behind the top timing cover. check underneath the intake plenum, near the timing cover for an open line. I'm not sure where that hard line eventually leads... ill take a look at mine and see if i can figure that out.

The bottom hose is for the vacuum line for the factory recirc valve, and *should* in theory just be a vacuum reference for the recirc valves. It can probably be plugged, or used as a vac reference for your aftermarket BOVs.

Photo #3 are also vacuum lines. The bottom is the clutch booster, and you're correct, the top is for the brake booster. I don't think it would matter if the two were switched. basically they're just vacuums.

I took off my ITBs and throttle actuators as one piece and its still together. I'll take a pic and post it and maybe you can reference it.

I'll check my harness for that mystery plug. I have a few mystery plugs myself, esp. on the lower harness where that one is...

[gawdzilla]

ah, figured out where that plug in pics #5 and #6 go. looked at my harness, and i have it labeled as "to air regulator". its the air regular which sits behind the AAC and the air chamber the AAC is connected to. http://mysite.verizon.net/vze778xe/aac.JPG and http://mysite.verizon.net/vze778xe/aac2.JPG should show the plug. My plug is navy blue for some reason.... you can see it just BARELY in the first pic nestled in the very back plugged in. The second pic shows it a little better. Good thing i took these pics before i disassembled...

Some pics of my itb w/ the actuator still connected. Note that the rail is upside down as you might be able to tell from the pics.http://mysite.verizon.net/vze778xe/itb1.JPG and http://mysite.verizon.net/vze778xe/itb2.JPG

Let me know if you need more pics... hope that helps

[Nameless EJ6]

Good to see some RB26DETT tech in here.

[Scott Buwalda]

Awesome!!

OK, the top hose in pics #1 and 2 (with the holes in the hose wrap)---I think this goes to the carbon canister. Behind the timing gear cover is a pair of hardlines that used to lead to the carbon canister. No carbon canister in my new install means I don't need this line. As for the lower tube, just as I thought, it lead to the recirc. valves. I am running under the assumption that I can plug both (or run a U-shaped tube in between these two), and should be OK. Anyone out there in RB26 land that thinks this is a bad idea?

Photo #3---just as I thought---clutch booster and brake booster. Werd.

Photo #5 and #6: HOLY CRAP DUDE, YOU'RE THE JUNK!! There it is, WAAAAY under and behind the AAC valve. I would have never found that thing without your help.

Photo #4: Just need a close-up pic of the throttle linkage at the work unit...need to know if there's a shim between the throttle chamber #1 and #2 linkages, and what type of nut was used...

Thank you so much gawdzilla!!

Scott

[gawdzilla]

cool... im envious of you putting it back together already... i'm still in the rebuild stage. glad i could help out on some stuff.

I editted the first pic some... what part do you want me to zoom in on/get measurements for?refer to the pic: http://mysite.verizon.net/vze778xe/itb1.JPG

[gawdzilla]

and yea.. i checked the top hose out in pics 1 and 2 in the FSM to see where they lead. they vac lines for the carbon canister, so since we dont need either... a U-shaped tube would be fine IMO

[Scott Buwalda]

Hey man, thanx again.

Yeah, it's been a while. Glad to see the light at the end of the tunnel.

WRT the throttle linkage. Flip the work unit back over, and the part that's toward bthe front of the engine...where throttle linkage #1 and #2 connect to the work unit. That's what I need. I need to know if there's some sort of a shim between the two paired throttle linkages, and what type of nut holds it all together.

Scott

[gawdzilla]

oh... you want a pic of the component where the throttle cable connects(work unit), between actuator rods 1 and 2?

From the pic it looked like you were holding one of the throttle bodies, so i thought you wanted that.

i'll take a pic of the work unit tonight then.

[andrave]

are either of you guys using stock turbos? I can't find gaskets for the weird 5 bolt outlet flange anywhere.

[gawdzilla]

did a quick google search... http://www.gcg.com.au/catalogu....html

search for something like "gt28 gasket" on google.pretty much anything with that housing t25/t28, internal wastegate gasket should work. you might even be able to get it at a nissan dealership. i believe the z32 TT has the same turbo housing too.

[andrave]

no, already tried that. they aren't the same, but thanks anyway. I'm buying some off someone else.

[b-s14]

hey scott, was wondering if you are dealing with the power steering cooler line issue.. ? i tried puttin the mounts on but they were hittin or rubbing at least.