Jesse

iTrader: (4)

My only warning about that config is that the airflow numbers you will get are in grams per second. Keep that in mind.

07blackg5

iTrader: (8)

I still have to figure out what's going to happen once I get this together. Not only do I have to get it tuned, but if there are issues I won't know if it's a tune issue or a vac leak or something haha. It's going to be a challenge. But I'm replacing all the seals and gaskets to hopefully minimize any assembly issues. Slow, steady, and careful.

On top of it all, I will have a brand new clutch that will need to be broken in, and an untuned engine. I need to come up with a gameplan. Arm said he uses the old/use clutch so that he can heat cycle and then tune right away, but the oem 2.2 clutch probably going to cut it for anything under power. If I can get a solid idle and a tune so that I can at least commute out of boost I should be able to break the clutch in, and that he tune under power. I have heard both sides of break in procedure. Some people say heat cycle and then go right into wot tuning, and some say to baby the car for X amount of miles. Either way I need to get the car idling ASAP so I can heat cycle. One step at a time

And typing on my phone sucks...

07blackg5

iTrader: (8)

It's a hex. The cam sensor on the lsj physically slides into the end of the cam, and the cam rotates it.

I don't mean a tune to use use long term. just a base tune to start from. Translate general info from a comparable lsj base tune with zzps2 cams, and scale the injectors and whatever else. because at this point, I am basically at ground zero for a tune haha.

07blackg5

iTrader: (8)

Spawn, how did you make sure your intake manifold was centered? the lsj uses m8 bolts, and the 2.2/2.4 use m6 bolts allowing for a tiny bit of side to side play.

Spawne32

iTrader: (1)

Havent even gotten to that yet lol gonna mock it up on the spare head i have on my work bench and see what I can do about alignment. I might drill out a small hole in the flange and use a dowel as a centering pin if I the space is available on the manifold. Desperately waiting for some spring like weather so I can start putting all these pieces together.

07blackg5

iTrader: (8)

i thought you were already sc swapped on the 2.4?

07blackg5

iTrader: (8)

I was thinking about using something similar to this with a nut on 2 of the holes, and then just using the m6 screws on the rest. all it needs are 2 holes to keep it alligned



I just want to find one with more of a step from m6 to m8 so that it sits flush against the head to keep the gasket centered too. the one I pictured would keep the manifold centered, but not the gasket

Spawne32

iTrader: (1)

not yet, haven't yoou been following the build thread? lol

Hmm that would work well, Ill have to take a look on mcmastercarr and see what I can find.

sandman

iTrader: (4)

I didnt even notice that during my install lol

07blackg5

iTrader: (8)

I only worry because I plan on running the phenolic however the **** it's spelled spacer. So I have 4 things to line up, opposed to just 2.

Spawne32

iTrader: (1)

I dont even know where you would find those studs you posted, they appear to be an OEM specific part for a motorcycle, and no thread pitch is listed (appears to be coarse thread). Im planning on ordering the phenolic spacer as well so this is something we are both gonna be working on. lol

Jesse

iTrader: (4)

You could always sleeve down the holes in the manifold if you wanted. Even a rubber sleeve would probably work.

07blackg5

iTrader: (8)

Anything to center it. I thought about a sleeve but if I could get a stud, I would prefer it. I might even see if I can get some made. The problem is that a sleeve can pull away from the head during install and let the head to spacer gasket shift

Jesse

iTrader: (4)

Could always have a shop redrill and tap the head too

07blackg5

iTrader: (8)

That was the first thing I considered, but the head is already fully assembled.

I'm going to give my uncle a call. He's a tool maker at Ford, and might be able to make me a stud like I want. Not 100% sure if he can/will, but i'm going to ask.

On another note, I got my new lsj manifold torn down, and started to plumb for dual pass/option B.

I was originally upset that zzp switched to red hose, but it's growing on me. Plus it's made in the USA, and seems really nice. It will be mostly hidden, so I stopped caring. I could always go to the parts store and get black hose, but from what Ive gotten before, it wont be this nice.

Depending on how this fits once it's in the car, I might need to tighten up the radius of the hose. For right now, I just tried to keep the hose as straight as possible. Gave me something to do while it's freezing cold out haha

Jesse

iTrader: (4)

So I have a question about those cams. How hard is it to determine the lobe centerline of the cams?

07blackg5

iTrader: (8)

there is a line that runs the length of the cam. I just mirrored the sensor on the zzp cam as close as I could. I talked to josh from ottp about about it and he said +-2* would be fine. It is easily within 2*

Jesse

iTrader: (4)

Interesting. Also, do you know what the inlet diameter of the TVS is? I have an interesting theory about a throttle body.

07blackg5

iTrader: (8)

its just slightly bigger than the ls4 which is 75mm. I would say maybe 80mm tops

my micrometer is in the garage, so I just estimated it. I can get an exact measurement tomorrow

Jesse

iTrader: (4)

Hmmmmm... interesting. That's the same diameter as the 5.3L throttle body from GM trucks. You know, the 6-pin ones that may very well have the same pinout as the 6pin Cobalt TBs. My only concern now is the bolt pattern of the two.

07blackg5

iTrader: (8)

I know my "ls4" came off of a trailblazer. They were in the ls4 cars, canyon/Colorado, trailblazers, and a whole bunch of other cars/trucks.

I'm not sure if there are any 6 pin ones, but that would be nice to not have to splice a pigtail in. The only concern is zzp says that their 6 to 8 pin harness wont work with the 05-07 cars. not sure if there were two different 6 pin plugs/wiring configurations, but it's worth looking into

Jesse

iTrader: (4)

There is a difference between the 8pin 05-06 throttle bodies and the 8pin LSJ throttle bodies. That's why the ZZP harness won't work. But if you're 6pin anyway and the 5.3L throttle body has the same pinout and is 80mm then why not? Even if you had to port the inlet of the TVS slightly or have an adapter made. I'm very curious now. I wonder if I could port an M62 to 80mm...

07blackg5

iTrader: (8)

zzp makes an 8pin to 8pin to solve the issue you stated, I believe

They also make a 6 pin to 8 pin, but it says that it will not work on 05-07 cars. were there even 6 pins after 07? I will shoot them an email tomorrow and ask them to clarify.

If anything, the 30 some dollar harness is a lot less than a GM pigtail costs. I would probably buy the zzp (if it was compatible), see how the wires were jumped, and cut/solder the pigtail on

Jesse

iTrader: (4)

What they mean by won't work on 05-07 is that you can't use it to swap an 8pin 2.4 TB onto your 6pin 07+ harness. 05-06 and maybe 07 used 8pin harnesses on stock 2.2 and 2.4 throttle bodies. 08 and up used 6pin throttle bodies. Not sure what you are running since you are 2007.

07blackg5

iTrader: (8)

My 2007 came with a 6 pin. My new "ls4" tb is an 8 pin and labeled that it came off of a 2005 trailblazer