Projext "V8 XJ" Build
- Thread starter PhotoJared
- Start date
the_midwesterner
NAXJA Forum User
- Location
- Evansville, IN
Hey guys. So i might move the PCM a little lower. Do you think this is too close to the headers?
I'd move it if I were you, at the very minimum, get some of that DEI heat shield and put it on there. I am not sure I would be willing to risk getting the ECM hot enough to melt some solder joints. Those already get pretty hot, additional heat soak from a header is never a good thing on electronics. DEI makes this stuff that you can put over the ECM to reflect heat. If you have a pepboys by you, they have it in stock and its like $25.
John D
NAXJA Member # 788
- Location
- Rockford, Mi
Agreed with this, it's too close.
- Location
- Virginia City, NV
Here's why I ask. I can get my intake all the way up there. Still need to test fit the hood, but it may work.
Why not make a bracket to mount it verticaly in that location. It would give more space from the headers amd still give you the intake you want
Looks like the brake prop valve is in the way.
PhotoJared
NAXJA Forum User
- Location
- Las Vegas, NV
It doesn't fit. The shock tower, brake MC, and shock tower are all in the way. This ECU is oddly shaped as well. I'm just going to leave it in the original location.
cleenrob
NAXJA Forum User
- Location
- Converse TX
Is there no space on the other side of the engine bay?
I would think switching sides would screw up all the lengths of the sensor leads. Plus there is an overflow bottle, PDC, AC stuff... not a lot of room over there either. That's why I went to the radiator support vertically.
PhotoJared
NAXJA Forum User
- Location
- Las Vegas, NV
I actually tried that originally, but I'd rather not have the PCM next to the overflow bottle.
Ordered:
New Mass Air flow sensor
4 new O2 sensors
Optima Yellow top battery model 43/78
I'm trying to get this thing at least turned over today (not running because I still need to plumb my gas tank.
What is wrong with the one you have? I was under the assumption that 99-06 truck MAFs were interchangeable?
PhotoJared
NAXJA Forum User
- Location
- Las Vegas, NV
Well thanks for mentioning that...I just realized what I missed. Apparently when they pulled this MAF they broke a sensor on the inside of it.
Here's what I saw:
And here's how it's supposed to be:
PhotoJared
NAXJA Forum User
- Location
- Las Vegas, NV
Unfortunately I forgot to tell Wayne where to put the MAF sensor plug. Fortunately it was easy to relocate.
Only took about 15 minutes
Only took about 15 minutes
PhotoJared
NAXJA Forum User
- Location
- Las Vegas, NV
Ok so here's what I did today:
Filled transfer case
Changed oil filter and filled with new oil
Permanently(ish) mounted the PCM
Connected harness grounds
Mounted harness fuse box
Permanently fitted dipstick
Ran the steam port hose
I'm done for the day!
Filled transfer case
Changed oil filter and filled with new oil
Permanently(ish) mounted the PCM
Connected harness grounds
Mounted harness fuse box
Permanently fitted dipstick
Ran the steam port hose
I'm done for the day!
cleenrob
NAXJA Forum User
- Location
- Converse TX
FIRE IT UP DAMN IT!!!
the_midwesterner
NAXJA Forum User
- Location
- Evansville, IN
So I have a question. Are you planning on running this for performance at all? I only ask since that manifold has been reported to heat soak like a mother ****er and cause some high nox, but it does have significantly improved VE vs a truck manifold. I am not sure it's relevant in your setup since I assume you aren't going with boost or trying to get large power numbers out of it in high RPMs, but I was just curious since I contemplated buying the manifold for a bit. For the price, you almost can't beat it. Unless of course you can find a loaded LS6 manifold for the same or similar price.
Not sure if this was addressed already or not.
Not sure if this was addressed already or not.
PhotoJared
NAXJA Forum User
- Location
- Las Vegas, NV
IM TRYING BROS!! I realized I still need to wire in the tank pressure sensor and other emissions stuff in the back. Ugh! Can I be done with wiring?
PhotoJared
NAXJA Forum User
- Location
- Las Vegas, NV
No this was never brought to my attention. Honestly it's not my DD nor a "high performance" build. I thought about putting in a cam, but maybe down the line.
Your reasoning is exactly why I bought it. This was significantly less than any complete LS6 manifold I could find on the interwebs.
the_midwesterner
NAXJA Forum User
- Location
- Evansville, IN
Appreciate the reply and I figured that would be your answer. I know actual LS number motor guys knock this manifold, but hotrod.com tested it here and it's attractive since not only does it make power up top, but also is comparable to the tbss manifold in torque, which is what we are concerned about.
Otherwise, nice build! You'll be happy when it fires. I was grinning from ear to ear when mine turned over the first time!!
Lastly, you should cam it!!!! Because, reasons..........
R.DesJardin
NAXJA Forum User
- Location
- Clarkston, WA
I bought a LS type intake, it clears the stock hood. As far as the no low end crap from the other forums......it's a V8 in an XJ. It's going be sweet!
