Plans for L32/3X00 Hybrid

[tkoforpresident]

yup, that's the 3.4 RWD diagram, and it will indeed help out a great deal.

Thanks Robert

where ya been lately? You've been missing all the fun of my new project.

[tkoforpresident]

OK so to continue on with the valve cover breather saga here is a picture of the valve covers which shows on the REAR VC, or for me, drivers side VC having an inlet hole for a breather tube.




So what's the best option for me?

I'm thinking we just slap a small filter onto that hole to let the VC breathe into the engine bay and I will find a way to plug the hole on my intake elbow since it's no longer used.

Of course I will have to find a filter that fits when the time comes and find a way to block that hole in the intake elbow but for now this is a...

DONE DEAL.


Of course maybe I can get the old breather pipe to work if I just "flip" the intake elbow (since it's just a piece of straight rubber now) so that the inlet is on the DRIVERS side! This might actually work, and work out well for me because now that my IAC and TPS sensors are located on the drivers side of the TB (and my IAT sensor also harnessed with these two sensors) it might give me better slack to reach up to my ram air box.

So... two options when the time comes.

[tkoforpresident]

Now Brad, to answer your question about the location of the map sensor on the 3.4...


look at the RWD plenum and at the very back left of the intake is where the sensor mounts (with two screws) to the intake. From there it has a vacuum hose that attaches to it and goes to the very small port that you also see at the back left of the intake. Look for that small gold piece of metal sticking straight up. That is the vacuum port it takes from. But the vacuum hose piece also hooks into the FPR on the 3.4


So I'm not sure what to do with the MAP on the 3400. I know that I want to reuse my old sensor and it makes sense to put it where the 3400 map sensor is located, except for the fact that I have no way to mount it there although I hear there is a map bracket for the 3400. Perhaps I need to see what this looks like.



I have a spare vac hosse for the map/fpr and a spare map sensor itself so i will bring them up tonite and see how we can get it to fit the intake.

that being said it is important to note that since the stock locations is the rear left of the plenum that is also where the wiring harness connector is for the map sensor. Therfore I do not know if I move the map sensor to where they are located on the 3400 if I will have enough slack to reach the new location.

[tkoforpresident]

OK guys, tell me if this would work theoretically.


I brought up an extra map/frp vac hose that I had downstairs as well as an extra map sensor.

I hooked up the hose to the front vacuum port next to the FPR that is usually "capped" and then ran the 2nd part of the hose to the fpr itself and then the final part of the hose to the map sensor. Now let me say why I think this will work.

1st, whether it matters or not I have maintained the setup of the FPR and MAP sensor being connected to the same vac port (like in my 3.4 rwd) and 2nd, the fact that I have the MAP sensor relatively close to it's stock rwd location means that the stock harness connector will be able to reach, or if anything, have to be lenghtened only a little. Take a look at the picture an you will see what i have done, and then someone please tell me if this will work out just fine.




I Think this will work fine but would like one of you to confirm this. If so, the only thing not ideal is how I'm going to mount the map sensor to what will probably be, the passenger side valve cover lol

[tkoforpresident]

nobody likes my customized vacuum setup?

by the way, I've updated my purchase list. Marc @ TCE is hooking me up with a 59mm ported 3400 TB and Billet Thermostat housing

Something interesting that I was ignorant of before today. The stock 3400 TB is only 56mm but the stock 3.4 RWD TB is only 50mm I can't believe it's that small. Anyhow, 59mm should be sufficient for what I'm doing and the billet thermo housing should both look great and keep my from having to buy a new upper radiator hose.

[TechRod]

Sweet simple setup for your vacuum lines, I'm working on my vacuum lines now too.

[robertisaar]

it's probably the same size as the Gen2 TBs... i know those were tiny as well.

[tkoforpresident]

it's probably the same size as the Gen2 TBs... i know those were tiny as well.

I've actually got a ported stock 3.4 TB right now on my car. For whatever reason I've never measured it. I'll have to do that when I take it off.

[tkoforpresident]

the last thing we/I need to figure out is the evap cannister purge thingy. But I've already got an idea for that...

But before I canvass those thoughts, does anybody know where I can get a vacuum harness kit for the 2000+ 3400? On my RWD 3.4 there was something called a "valley harness kit" which only cost a few dollars through GM and came with most of the vac lines. Now I am only really in need of the PCV vac line which runs from the VC to TB but if it comes in the kit I'd be glad to purchase that as well and see if I can make the other parts useful.

I've searched gmpartsdirect but couldnt find anything. Any help would be awesome.

thx

[tkoforpresident]

OK guys, this might be the most signficant modification yet.

How the heck am I going to get the new fuel rail/injectors to work with my stock harness?


To make matters worse, the RWD injector harness also has the CTS sensor wiring hooked up to it (2 wire sensor in LIM), not just the injector wires. Unfortunately I did not give much thought to this step

the 3400 rail looks like it has a bunch of sensor connectors. There is one that is definitely the MAP sensor connector. I think there is one for a CTS sensor (probably 3 wire though..) and there is one that i'm not sure of that has 3 prongs and a PURPLE gasket/insulator.

I am really disconcerted about this. I'm sure I will have to cut/splice some wires to adapt the old harness to the new fuel rail but I don't even know which wires go to what

I'm really not happy about this. What am I going to have to do?

[bszopi]

Quit being a baby! No one said it was going to be easy!! Besides, you still have a lot of time to figure this stuff out. You are acting like you need to get it all figured out RIGHT NOW. As far as the sensor wires, IIRC, the other 2 are for the IAC and TPS. I think... I'll see if I can't dig around one of my engines again to verify.

[tkoforpresident]

Quit being a baby! No one said it was going to be easy!! Besides, you still have a lot of time to figure this stuff out. You are acting like you need to get it all figured out RIGHT NOW. As far as the sensor wires, IIRC, the other 2 are for the IAC and TPS. I think... I'll see if I can't dig around one of my engines again to verify.

Yeah I know I'm bein a baby but this kind of stuff freaks me out.

The connectors are not for an IAC valve, I checked with a spare sensor.

[tkoforpresident]

I'll try to move a little slower when it comes to trying to figure all of this out. I DO afterall have lots of time on my hands before this thing happens.

But for now I've got some new purchase pics! (Everyone loves those right?)


28# injectors from WOT:





EGR block off plate from WOT (pretty sweet lookin huh? ) :





and finally, a tap and die set from harbor freight (15$ ftw) which I'll use to tap for a CTS sensor:

[TechRod]

Excellent, if you have another manifold or something to practice tapping a hole you might want to.
Check out http://www.ehow.com/how_7524509_drill-tap-aluminum.html
Good luck!

[CNCguy]

Max... WD40 works very well as a cutting fluid for aluminum.