Monday 12 December 2016

Back on the road

4 x new tyres, wheel alignment and the beast is back!




















































Better in every way to how it was before.

HUGE thanks to JtC!

There is no way I could have taken this photo, in this time frame, without his help.

Thanks again.

J

Friday 2 December 2016

Swappin' Relays + Grit Blasting

---------- Forwarded message ----------
From: John
Date: Fri, Dec 2, 2016 at 12:56 PM
Subject: Verrry interesting...
To: JtC

Yo!

This morning I swapped the fuel pump relay with one of the thermo fan relays and gave it a start. Buzzing as usual. I thought I would check fault codes...


P0036
P0056
P0463 and
P0483
...are all usual suspects, no problems there.

The interesting one is P0480...
Cooling Fan Relay 1 Control Circuit

Extract:
"The causes for this DTC may include:
  - Faulty fan control relay 1"

Don't know B2aaa, but I think "B" is something to do with body control module (which is deleted). I know the low-speed thermo fan function is managed by the BCM, so there is every chance it is tied-in with P0480.

Video here...

After switching the car off I swapped the relays back again.

A few other things...

Coolant is below the top of the core.

Packed the bonnet hinges and bonnet latch into the Commodore in the hope that I can find some time this arvo to give them a grit blast.

< Edit... done! Photo below >






























With all the starts I have been giving the Chev this week, I decided to disconnect the negative terminal and put the battery on trickle charge.

J

Thursday 1 December 2016

OBD2 Fault Codes

Entered a custom sensor ID for the oil pressure into the OBD2 scanner last night. Tried it this morning... no good. Will keep trying.

Read the fault code log. There were a few there. I cleared the log, then checked again and nothing resurfaced, so it looks like the sensors we are no longer using (e.g. post-cat O2 sensors) have been switch off. I'll keep an eye on it.

Log of fault codes...
P0036
P0054
P0056
P0060
P0123
P0223
P0463

Doing a bit of research (e.g. http://grego.ca/limp.htm), a TPS fault is treated REALLY seriously (which makes sense as the computer can't reliably know where the throttle blade is).

Remember how the throttle butterfly plug wasn't plugged in? This one caught my eye...
P0223 Throttle Position Sensor/Switch B Circuit High Input

And I quote...
"When this code is stored, the PCM will usually enter limp in mode. Engine acceleration will be severely limited (if not disabled) in this mode".

Here's hoping that clearing that fault will be the simple fix to the lack of power!

Itching to take this thing for a drive...

J

Monday 28 November 2016

LS Starter Solenoid

---------- Forwarded message ----------
From: John
Date: Mon, Nov 28, 2016 at 12:58 PM
Subject: LS Starter Solenoid
To: JtC

Interesting read...

Thinking about the gauge of purple wire from the VZ, I wonder if we are giving the solenoid enough juice?

If the starter problem surfaces again, we could try feeding terminal 30 of the starter relay with larger gauge wire from battery +ive.

J

Sunday 27 November 2016

The Big Push - Day 2 (wiring + fluids + START!)

Yesterday's efforts broke the back of the last leg to start-up, with the only remaining wiring being the interface with the existing Chev circuits:
- wire ignition on (pink 4mm wire).
- wire into the brake circuit (red 2mm wire).
- wire the reverse lights (yellow 2mm wire).

Then it was a case of adding all fluids, holding our collective breath and turning the key!

Nothing.

With "ignition on", we could hear the fuel pump relay click and the fuel pump whirr into life for a couple of seconds then stop. All good. Part of the design.

Then twist to start, we could hear the starter relay click, as well as a loud clack from the starter solenoid... but nothing.

After a couple of twists with nothing, one last twist caught and the engine stumbled into life...


A couple of things... you can hear some lifter tap, so there was a bit of concern around oil pressure. The idle is rough and hunting, plus the accel pedal did nothing.

We killed it and scratched our heads for a while; we needed to know what was going on.

I took a drive to a mate's house (Stu the Aussie champion) who lent me his OBD2 ELM327 adaptor. But on my return, JtC had nailed it!

The plug to the throttle butterfly was loose. A quick click and voila! Smooth idle!

We even had gears. First time in daylight for nine months...



A quick run up the hill showed that the thing was gutless as anything. Full throttle saw the car crawl up the hill... something awry there.

And one final issue, a buzzing from the relay that feeds the fuel pump...



One final video that highlights the baulk on start. The first crank is a no-go and the second fires...



So the issues are:
- baulks intermittently on start-up
- buzzing fuel pump relay
- gutless

Interestingly in the last video, the fuel pump relay is much quieter.

Time to do some research but the issues do not seem insurmountable.

HUGE thanks to JtC for all his efforts! There is no way I could have achieved all this in the time we did without his time, efforts and experience. Well done!

J

Saturday 26 November 2016

The Big Push - Day 1 (wiring)

It has come to this.

Through the week I booked the exhaust for 9/12 and rego inspection for 12/12, so there is a real urgency now to knock-off the last items on the to-do list... the majority being related to keeping smoke within wires.

We had mini working bee Tue night to fit the battery tray and drill through the firewall on the passenger side for battery positive, thermo fan and starter wires.

During the week, various parts were acquired ready for a committed weekend of wiring...
- 25 mm2 cable (battery to starter, batter to alt, ground)
- lugs for 25mm2 cable
- distribution post for feeding battery +ive to various circuits
- relay base (will reuse a relay from the VZ for P/N start conditioning)
plug for thermo fan connection
- 10mm dia split conduit
- 16mm dia split conduit

So to the weekend: a HUGE double header from JtC, making the trip north on both Sat (wiring till midnight) and Sun in an attempt to get the beast started.

First mission:
- Create new battery/ground cables.
- Wire the battery positive/starter/alternator/ground harness.
- Wire the existing Chev battery positive harness to the existing horn relay.
- Wire constant power source (red 2 x 6mm wires) from EFI to battery positive...

Wiring08


Detailed shot of the battery +ive distribution post arrangement...

Wiring09


Secondly: Wire the fuel pump (purple 4mm wire). We ran the wire under the carpet (down the passenger side of the car), under the base of the seat and dragged it though into the boot using floor board tongue...

Wiring07


From there we passed it under the car, through a re-purposed grommet (that was used for the old fuel tank vent), up to the fuel pump and terminated.


Third task takes place under the dash (hard to take photos as the wiring is so well hidden!):

Wire a starter relay which is conditioned to feed the starter solenoid only when the trans is in Park or Neutral (managed by the ECU... the existing Chev P/N switch is by-passed).

We grabbed a relay from one of the VZ relay blocks and mounted into a relay base that clipped to the end of the string of relays in the ECU harness.

existing Chev start trigger wire = pin 86
grey 2mm wire from ECU = pin 85 (switched ground).
existing Chev start trigger wire = pin 30 (looped from the feed to pin 86)
wire to starter solenoid = pin 87


Fourth: Wire the thermo fan (green 2 x 5mm wires).

Wiring10

More tomorrow.

J

Sunday 20 November 2016

Intake + Thermo Fan Finalised

The most annoying work is having to do work a second time. This was what was before us in having to remove the Commodore thermo fan and start the mounting process from scratch with the Falcon fan.

JtC made the trip up and got stuck in.

Thankfully, it was more material removal required than making a shroud. The Falcon fan sat well, hard against the radiator core with a slim profile, allowing the intake pipe to thread its way between the radiator and the power steeering reservior...

IMG_3362

IMG_3363


The MAF/pod filter assembly is supported and held in position by a bracket off the radiator support.

Note the exposed length of alloy pipe at the throttle body inlet.

Clearance everywhere... a work of art!

BIG thanks to JtC in enduring the pain of doing a task twice-over, all the while taking his time to do it right!

J

P.S.
While inlet + thermo fan was happening, I wire-brushed and painted the battery tray ready for refitting.

P.S.S.
The photos above were taken before the steam pipe was connected, but JtC connected it as well <phew>!

Thursday 17 November 2016

Four Letter F-word

So the original plan to use a thermo fan from a VS V6 Commodore (see here) wasn't going to work.

Once we started dummying-up the intake, it soon became obvious that the massive shroud over the top of the VS fan was going to foul the pipe to the throttle body.

After a bit of research, it was decided to go with a thermo fan from the dark side... a big single from a FG Falcon...

IMG_3348

IMG_3347

IMG_3351

J

Sunday 13 November 2016

Intake

Time to turn our thoughts to the intake...

4" dia 90 deg. silicon bend


Short piece of silicon hose and alloy pipe off the throttle bode to ensure the 90 degree bend could clear the power steering reservoir.

The more astute reader will notice the missing radiator fan.

Clearing the power steering reservoir meant the huge shroud of the V6 Commdore thermo fan we had installed a couple of weeks prior was now going to foul the intake <sigh>.

Solution to that little issue next post.

The good news is the top radiator hose I sourced here, worked a treat (with a bit of judicial trimming)!


Trialing the MAF/pod position...

Positioning the Pod


Dummied-up...

Final Position


This will be the final position of the pod/MAF, with some tweaks to be made to the reducer section length (4" section too short... swapped for a longer one), and exposing some of the alloy pipe at the throttle body (by reducing the 90 deg. bend leg length).

J

Monday 7 November 2016

Wiring

A few days after the hole in the firewall was finished, JtC came up to help pull wires through...

IMG_3327





Acres of room under a full-size dash for mounting all the paraphanalia!

We'll leave the harness, ECU's, etc. hanging down for access while we wire.

J

Thursday 3 November 2016

I Dug a Hole

After much umming and ahhing over the decision of where to mount the engine ECU + gearbox ECU + associated relays and fuses, the decision was finally made to make use of the existing hole in the firewall, set aside by GM for the clutch master.

It was around 2" diameter, so a cardboard template was cut-out to practice pushing the large ECU harness plugs through...

Wiring Test Holes


The first hole was an experiment in leaving the orginal firewall hole diameter and cutting a recess off to one side to house each strand of the harness as we passed it through.

Good in theory, but no cigar... 2" diameter was too small.

On the right is a 3" diameter hole which worked fine.

Time to get cutting...

Making a start


Getting bigger...

IMG_3321

IMG_3318


Once drilled-out, all jagged edges were tidied-up with a carbide burr on a drill and lined with a grommet made out of spilt ATF cooler hose.

J

Friday 28 October 2016

New Tailshaft

New thicker-wall tailshaft (80 mm shorter than original to accomodate the longer 4L65E) and new uni joints, packed with grease ready to be bolted-up...

Tail shaft


Work done by A&L Driveshafts in Campsie.

UPDATE: exploded on the dyno on Tue 17.04.2018.

The A&L driveshaft was 2.750" OD with 0.083" wall... waaay too small!

J

Thursday 27 October 2016

The small things in life

The steam pipe outlet on the LS needs a 6 mm ID hose.
The inlet port to the top tank of the radiator needs a 10 mm ID hose.
Get both size hoses and join in the centre with this...

Steam Pipe to Radiator Adaptor


One required but bought two in case one snapped ;-)

J

Tuesday 18 October 2016

CSI: Radiator Hose Unit


---------- Forwarded message ----------
From: John
Date: Tue, Oct 18, 2016 at 11:00 PM
Subject: CSI: Radiator Hose Unit
To: JtC

1.
After a bit of measuring down in the garage, the attached "Top Radiator Hose Drawing" is going to be in the ball-park of what we are looking for. Printed out on A3 will give me a 1:1 template I can take with me to a parts store.

2.
Mackay Automotive have put out an AWESOME catalog which lists their hoses by ID, then length...
The top hose needs to be 33 mm ID. There looks to be a few which are promising, with CH1848 one of the best (with some trimming to length).

3.
Did a quick search for CH1848 on Supercheap Auto's website...

Now to go have a look!

Top Radiator Hose

It just happens to be the top radiator hose off a V6 VN-VR with ABS... did you salvage the top hose off the VR you bought?

J

Other promising ones...
---
Mackay
33 mm ID x 424 mm long as the basis...
---
CH3420
CH3539
CH3730
CH4822
CH1368
CH2552
CH3336
CH4274
CH3900
CH4009
CH1365
CH4954
CH1848 <-- 05-0922 <-- 92046089

Sunday 16 October 2016

Thermo Fan + ATF Cooler Lines + Bottom Radiator Hose (phew!)

BIG weekend spent on the Chev... and another BIG effort from JtC!

Saturday started with choosing a thermo fan from the pool of fans (what is the collective noun for electric thermo radiator fans?) we had lying around the place.

We settled on a VS V6 Commodore fan; will it draw enough air? We'll see! At the very least we put 12V across it and it certainly works.

Time to fabricate a shroud and get it mounted. Scavenged plastic sheet from old radiator shrouds and self-tappers FTW!

Thermo Fan Mounts


Folded gal steel sheet was used as bracket material, salvaged from a bash/splash plate from the underside of the VZ ute...

Thermo Fan Mounting Brackets

Thermo Fan


The shroud and brackets were hit with satin black in the evening, ready for Sunday.

A new day and new challenges.

The bottom radiator hose arrangement was adapted from the VT II/VX/VY setup we used on the test frame. This meant:

  • U-shaped hose out of the water pump (Mackay Rubber part number CH2956),
  • VT II/VX/VY transfer pipe (sourced second-hand from a wrecker) and
  • 90 deg. hose into the radiator (Mackay Rubber part number CH3028... cut-down for the narrower Chev radiator).

The transfer pipe has mounting tabs which we bolted to the radiator support panel using more brackets fabb'ed from the VZ splash plate material. Bit dark, but it's there I promise!..

Coolant Bottom Crossover Pipe Mounting

Coolant Bottom Crossover Pipe Mounting


The last photo also shows the ATF cooler hose sitting on top of one of the transfer pipe brackets. The cooler hoses were connected to the radiator using Speedflow fittings/barbs and standard ATF cooler hose, retained with hose clamps. Might swap to hose with AN hose ends in the future when the wallet recovers.

More ATF cooler hose goodness...

ATF Cooler Lines + P-Clips + AN Fittings/Barbs

ATF Cooler Lines + P-Clips + AN Fittings/Barbs


Finally, the finished product...

Thermo Fan Brackets

Thermo Fan Brackets


Massive thanks once again to JtC who did the majority of the work; excellent workmanship yet again!

We are getting close now...

J

Saturday 15 October 2016

ATF Cooler Hose AN Fitting Shopping List

Speedflow Fittings

MALE TUBE ADAPTER
618-06-06-BLK
2 off

411 SERIES HOSE ENDS - 45 DEG HOSE END
412-06-BLK
1 off

411 SERIES HOSE ENDS - 90 DEG HOSE END
413-06-BLK
1 off

411 SERIES HOSE ENDS - STRAIGHT HOSE END
411-06-BLK
2 off

POWER STEER, FUEL & OIL LINES (AN-6 to 1/2”-20 Inv)
703-06-BLK
2 off

Saturday 8 October 2016

Radiator Support

With the radiator left getting modified, I took the mounting strap/flanges home to be modified to mount the Chev's radiator support panel without using the spacer.

The spacer was a handy template, obviously having the bolt patterns for both the existing radiator mounts, as well as the radiator support panel.

Without the radiator to hold the correct bolt spacing, I bolted the support strap to the inside of the spacer and use threaded rod to hold the two sides at the correct spacing.

Then flip over the spacer and determine the width of flange required. Here it is with the flanges already cut out of galvanised steel scrap...

RadSupport02


Holes were drilled in the flanges to match the radiator support bolt spacing, then bolted into the car...

RadSupport03


...before lowering in the radiator mounting strap, locating it against the flanges in the final position and marking where the welds were to go...

RadSupport04


Then it was time to break-out the welder!

RadSupport06

RadSupport05


Trial-fit in the Chev... all good!

RadSupport07

Then a quick dress of the welds, prime and paint with satin black (no photos).

Now to drop the modified mounting strap off to Merrylands Radiator so it can be reunited with the modified radiator.

J

Wednesday 5 October 2016

What's missing?


Stopped in at Merrylands Radiators this morning and explained the plan.

Ray was all good and will put Commodore-sized ports as far in the corners as possible, plus add the little steam vent port... all for $100! And could be finished this 'arvo!

He was just a bit unsure about the wider mounting flange so came up with the idea in the photo. Within a couple of minutes he had melted the solder holding the mounting strap and whipped it off the radiator. Now I can take the mounting strap home and weld a wider flange to it. He will remount it, all included in the $100.

He'll give the radiator a clean as well.

J

Monday 3 October 2016

Headers + Engine Pipes

Grit blast the headers...

IMG_3227


Quick wipe down with wax and grease remover.

Hit with this...

IMG_3226


..."in" the outdoor spray booth...

IMG_3230


...and baked to perfection...

IMG_3231


Back under the car, JtC axed through the engine pipes, just forward of the trans cross member...

IMG_3229


He then tied the exhaust to the transmission cross member ready for the transport (drive!?) to the exhaust shop...

IMG_3228

J

Wednesday 28 September 2016

Radiator and Thermo Fan Clearance Dimensions

Scratch below! We are deleting the spacer (decided 02.10.2016).

From: John
Date: Wed, Sep 28, 2016 at 12:08 PM
Subject: Radiator and Thermo Fan Clearance Dimensions
To: JtC


See here...

Radiator to Engine Dimensions

So spacer + radiator = 122 mm + 55 mm = 177 mm.

Radiator support to water pump pulley is 245 mm.

That gives an absolute maximum radiator width of 63 mm (which only leaves 5 mm to the water pump).

Now... Summit has a nice search feature where you can search by thickness of thermo fan.

It looks like there are a few options:

The 2.000" and 2.031" versions look like the go.

The other factor to keep in mind is the hose lengths. That will be another factor in keeping/omitting the spacer.


J

Tuesday 27 September 2016

More EFI clamps turned up

So we were able to finish off the final hose from the hard line to the engine...

IMG_3198


...and plumb the hose from the tank/pump vent to the breather...

IMG_3218

IMG_3210

IMG_3213

J