3rd gen VQ35DE Full ECU Swap Progress Thread
11-12-2008, 12:41 PM
#165
seriously? running the voltage backwards will wind the mileage down on a digital odometer? On a mechanical one like the 3rd gen, yea, but i didn't think that would work on a 5th gen speedo....
11-13-2008, 09:37 PM
#177
11-13-2008, 11:31 PM
#178
11-14-2008, 07:40 AM
#179
Wiring? I haven't come close to that part of the project yet. Step 1 is to get this engine together on the stand. Then I'll physically install it in the engine bay with the 4th gen crossmember. Then I'll worry about installing the wiring harness.
I already have a dash harness. And I already ordered the engine harness, but it got lost in transit! They claimed they have found it, but I can tell they don't know for sure. I know the package is insured, but it's just a hard part to find, I don't want my money back. I want the harness!
In the meantime, I can go through the harnesses, label and prune out what I don't need like eng92 did.
Yeah. And I don't want to scratch up the top of the pistons. Did you get my PM?
I already have a dash harness. And I already ordered the engine harness, but it got lost in transit! They claimed they have found it, but I can tell they don't know for sure. I know the package is insured, but it's just a hard part to find, I don't want my money back. I want the harness!
In the meantime, I can go through the harnesses, label and prune out what I don't need like eng92 did.
Yeah. And I don't want to scratch up the top of the pistons. Did you get my PM?
11-14-2008, 09:14 AM
#180
That's exactly what I did to mine. Cleaned out the head chambers, too, then lightly buffed the block with the wire brush before installing the 2005 350Z 3-layer head gaskets. I guess those things worked - the engine still runs rather well.
11-14-2008, 10:33 AM
#182
Wow - great minds and all that...
That's exactly what I did to mine. Cleaned out the head chambers, too, then lightly buffed the block with the wire brush before installing the 2005 350Z 3-layer head gaskets. I guess those things worked - the engine still runs rather well.
That's exactly what I did to mine. Cleaned out the head chambers, too, then lightly buffed the block with the wire brush before installing the 2005 350Z 3-layer head gaskets. I guess those things worked - the engine still runs rather well.
I cant work on an engine if its got dirt and grime all over (as you know I keep a huge stock of brake parts cleaner LOL). Same applies to putting the engine back together. I could not let my self put Aaron's motor without cleaning it off
11-14-2008, 07:55 PM
#183
Has it been sucking oil? Did the IM have lots of motor oil in the intake elbow and intake runners? Mine did - so I installed two inline oil-air separators between the PCV valve and the vacuum intake stub on the elbow. They sure collect a lot of oil after a few runs, too...
Last edited by grey99max; 11-14-2008 at 07:59 PM.
11-14-2008, 08:23 PM
#185
OK - that motor has been sucking oil from somewhere - it seems like all cylinders have deposits on the pistons. That is not pretty - and looks a lot like my engine did when I peeled the heads off. (with 60K miles)...
Since I wasn't going to pull the pistons or re-ring the engine, I chose to tilt the engine over past vertical on one side, washed the pistontops with acetone, wire-buffed the pistons - and head gasket surfaces, then flipped the block over and did the same on the other bank. cleaned the wire brush with acetone at the same time. Then I buffed out the combustion chambers the same way. Clean off the cylinder walls with a cloth soaked in acetone. The whole thing came out clean and tidy. Put some motor oil in each cylinder when done.
Second choice is to replace at least the rings, or pistons and rings, and still wire-brush the heads - because I bet there is the same crud in the corners of the combustion chambers.
You will start to enjoy the acetone fumes as well...
Since I wasn't going to pull the pistons or re-ring the engine, I chose to tilt the engine over past vertical on one side, washed the pistontops with acetone, wire-buffed the pistons - and head gasket surfaces, then flipped the block over and did the same on the other bank. cleaned the wire brush with acetone at the same time. Then I buffed out the combustion chambers the same way. Clean off the cylinder walls with a cloth soaked in acetone. The whole thing came out clean and tidy. Put some motor oil in each cylinder when done.
Second choice is to replace at least the rings, or pistons and rings, and still wire-brush the heads - because I bet there is the same crud in the corners of the combustion chambers.
You will start to enjoy the acetone fumes as well...
11-15-2008, 04:59 AM
#187
Or detonate, with all that crud glowing in the dark.....
Has it been sucking oil? Did the IM have lots of motor oil in the intake elbow and intake runners? Mine did - so I installed two inline oil-air separators between the PCV valve and the vacuum intake stub on the elbow. They sure collect a lot of oil after a few runs, too...
Has it been sucking oil? Did the IM have lots of motor oil in the intake elbow and intake runners? Mine did - so I installed two inline oil-air separators between the PCV valve and the vacuum intake stub on the elbow. They sure collect a lot of oil after a few runs, too...
I've been meaning to install one but stop modding the car when the tranny broke
11-15-2008, 08:42 AM
#189
OK - that motor has been sucking oil from somewhere - it seems like all cylinders have deposits on the pistons. That is not pretty - and looks a lot like my engine did when I peeled the heads off. (with 60K miles)...
Since I wasn't going to pull the pistons or re-ring the engine, I chose to tilt the engine over past vertical on one side, washed the pistontops with acetone, wire-buffed the pistons - and head gasket surfaces, then flipped the block over and did the same on the other bank. cleaned the wire brush with acetone at the same time. Then I buffed out the combustion chambers the same way. Clean off the cylinder walls with a cloth soaked in acetone. The whole thing came out clean and tidy. Put some motor oil in each cylinder when done.
Second choice is to replace at least the rings, or pistons and rings, and still wire-brush the heads - because I bet there is the same crud in the corners of the combustion chambers.
You will start to enjoy the acetone fumes as well...
Since I wasn't going to pull the pistons or re-ring the engine, I chose to tilt the engine over past vertical on one side, washed the pistontops with acetone, wire-buffed the pistons - and head gasket surfaces, then flipped the block over and did the same on the other bank. cleaned the wire brush with acetone at the same time. Then I buffed out the combustion chambers the same way. Clean off the cylinder walls with a cloth soaked in acetone. The whole thing came out clean and tidy. Put some motor oil in each cylinder when done.
Second choice is to replace at least the rings, or pistons and rings, and still wire-brush the heads - because I bet there is the same crud in the corners of the combustion chambers.
You will start to enjoy the acetone fumes as well...
Last edited by DrunkieTheBear; 11-15-2008 at 08:46 AM.
11-15-2008, 09:11 AM
#190
I agree with everything but the rehone. As long as the factory crosshatch is intact, leaving well enough alone is best. Otherwise the pattern will be uneven which is undesireable. The only time rehoning is suitable is when the cylinders have completely glazed over and have lost their oil-holding capabilities.
11-15-2008, 09:19 AM
#191
I agree with everything but the rehone. As long as the factory crosshatch is intact, leaving well enough alone is best. Otherwise the pattern will be uneven which is undesireable. The only time rehoning is suitable is when the cylinders have completely glazed over and have lost their oil-holding capabilities.
Also nismology did you get my PM on the LIM info?
Last edited by DrunkieTheBear; 11-15-2008 at 09:33 AM.
11-15-2008, 09:31 AM
#192
I agree with everything but the rehone. As long as the factory crosshatch is intact, leaving well enough alone is best. Otherwise the pattern will be uneven which is undesireable. The only time rehoning is suitable is when the cylinders have completely glazed over and have lost their oil-holding capabilities.
If I were to rering the pistons, I'd overbore it and start from scratch. But I do have to stop spending money somewhere.
And I think the pistons look like any 49K mile piston would look like. I will still clean them carefully, but it looks normal to me.
11-15-2008, 02:51 PM
#193
Here's a photo of my two in-line oil/air filters:
These were purchased at Harbor Freight... connected between the PCV valve and a vacuum line into the SSIM.
11-16-2008, 10:39 AM
#194
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Oops, sorry, wrong link, here it is: Custom PS lines
11-16-2008, 12:21 PM
#195
11-16-2008, 03:15 PM
#196
Oops, sorry, wrong link, here it is: Custom PS lines
11-16-2008, 07:21 PM
#199
11-16-2008, 07:24 PM
#200