WA fb special

[rosco]

Thanks Rob,
people at ABS told me they were..... by their documentation....I didn't see the numbers, just paid the money and waited for them to come in.
Oh well, I might have been lucky to have got the correct ones...

Mine fit ok, but I also have the narrow linings for the disc brake compatible rear shoes... the HD/HR rims fit ok on them... so, I must have got the right drums - I didn't notice any difference between the drums I replaced these new ones for...

Be interested to see a pic of HD/R along side LC/J..

See if I can find the numbers... from memory, they were RDA units - I'm guessing the numbers I logged were RDA numbers.

frats,
Rosco

[mph]

When you get so close to the x2 headers installed then the dump pipe hits on the steering idle arm.

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[Errol62]

Clint,
I had a stock blue motor twin cast header exhaust in my EK215. I had the pipes one above the other like so:

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[ardiesse]

Exhaust pipe hitting the idler arm was a designed-in feature on original HD and HR X2s. (As also was muffler hitting the passenger's side underfloor when you dropped the clutch in first. Broken LHF engine mount made it happen even on gentle starts.) I wouldn't like to think that a red motor swap into an EK would be any different.

Rob

[Blacky]

any half decent exhaust shop should be able to sort that out.

[rosco]

I have two sets of these - and intended to fit one each to the EK and FJ..... yet to do either.
I looked at having to change the intake manifold and that stopped me.

My exhaust was custom made by Unique Exhausts in Bayswater (Vic) - they did a brilliant job of it... for twice as much money, they'd have made it out of stainless.... maybe when this one snuffs out I will...... every part of what they made and fitted is exactly where I would have put it - pricey, but a great fit and worth every sheckle..

I'm certain that they'd sort out the pipe issue with headers.

frats,
Rosco

[mph]

Ardiesse ,Sounds like holdens engineering, I'm not sure what the x2 headers are off , I've read they hr are different to the xu1? Which might change the twin dump pipe bends a little even the location of a red in a hr to a red in a fb.
Errol , I'll mention it to an exhuast shop when the time comes to re install it that some were over the top not side side.

Blacky , hopefully so I can drive it with the x2 manifold on already save asking a exhuast shop to change the manifolds over as well. The closer to me to more id be tempted to drive with open manifolds and save trailering
Rosco , yes I learnt a while ago you get what you pay for ,I'll be mentioning how i would like it run . I'm happy to pay for a quality job so long as it is quality, I only plan on doing this exhaust once, I don't need it to be in stainless though steel like the rest of it should be suffice

I had another stock EH manifold and intake which I split yesterday with out snapping the 3 rusty bolts that join the manifolds and was going to use that for the carby and leave my current ones joined.
I also have a nice powder coated red HR single carb manifold but it hits on the x2 zorst manifolds so a step back and need to use the EH style one.



I installed my 2" exhaust and put the standard manifold and intake and dump pipe back on , a waste of time and gasket that was , but not to hard of a job , i mated the old dump pipe to the new zorst at the fire wall until I can sort and re install the x2 headers . The new system runs a straight through muffler im almost disappointed the system is still quite quiet even with the skinny pedal flat to the floor.

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[Errol62]

HD X2 headers had a slightly different rear outlet, and ran two seperate engine pipes, into a y-piece. HR on ran a one piece twin engine pipe, making the flanges captive. This was then a one piece assembly, so whereas HD has a part number for the flanges and front and rear engine pipes, HR on has only a part number for the complete assembly. The flanges are hard to get, but are actually the same as EH HD flange.

GTR, Xu-1 and 186s front headers had a tube running top to bottom through the 2 and 3 outlet for auto choke.

The WW inlet will fit with stock exhaust, but stock inlet won’t fit with twin headers as you have discovered.


FB ute fixer upper, EK van on rotisserie

[rosco]

Yes, that's what I found Clay - I was contemplating cutting the water jacket back where it fouled the 186S headers... and welding in a plate to seal it up again...... might yet happen, but I need to learn to weld aluminium alloy first.... that jacket is only for water pre-heating of the inlet....
As we have learned in later years after this amazing invention was incorporated into HR and later.... you really want cold air going into the motor once it reaches operating temp.... more expansion.
The HR (and probably HK and later) used a twin rubber hose connection to the water jacket... it was permanently connected to the cooling system.
I recall my cousin's LJ 202 - the pre-heating ran via the heater tap... can't remember if the heater was first in line, or the manifold...
The thermostat housing was a little different too from HR .. I think there was a drilling port in the head which allowed a by-pass flow to go through the inlet manifold heating jacket...

frats,
Rosco

[ardiesse]

And also: HR X2/186S engine pipe (changes mind, because you are running an automatic with your 161, so no grey rear mounts) may work. It may suit to cut the single pipe off just after the Y-piece and have your exhaust shop custom-make everything from there backwards. The fact that the motor sits about 3-4" rearwards in an EK relative to an HR may help here. But what you definitely need is the bellhousing-to-engine stud that goes just below the starter motor, and the X2 exhaust pipe brackets. Otherwise you'll be forever tightening the flange nuts on the headers.

I have an unused HR-style X2 engine pipe, which I bought in the late 90s for my HD. I bought two, just in case . . .

Your front header has the tube for an automatic choke, so 186S or GTR. An EH/HD single inlet manifold may be compatible with the cast headers.

Rob

[mph]

I have the hole in the the front manifold so they must be the later manifolds , holdenpaedia I found some info on them as well.
There was a fair bit of room for the pipes so it shouldn't be to hard for zorst shop.
So should I have a tab welded on the down pipes and supported to the block?
Has any one had a single 2" and a hotdog no mufflers before, im after a bit more note, but not the high rpm thong slap or clapped out vn v6 no muffler noise.

I have a ww carby and manifold to also go on but not yet was going to wait to put in on the new motor and mod the accelerator then.
Side note the block I sent to be acid bathed and tested came back with cracks in the top bolt holes into water jackets.
My old man said he has two other blocks untouched with standard bores still so will use one of them for the next project motor.



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[Errol62]

You did well separating the old cast manifolds without breaking anything. Would be good value to someone doing an authentic resto on an EH or HD.

I'm facing the very same situation with my ute but I haven't got hold of the flanges yet. Torana bloke wanted $150 for a pair. I have to get up very early one Saturday morning and drive up to the other side of town to Old mates, and get a couple of 149 179 ones.

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[mph]

Got my twins sorted with little mandrel bends, nice and close to the floor. soon as I started it up had a massive miss like a plug was off. I didn't think splitting the manifold would be an issue or that exhaust gas heads into the intake, but it's the only thing different I did technically. I held a plate under the intake manifold while running and it made a massive air sucking noise. So I'll investigate that today. I'm thinking a bolt hole.

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[Errol62]

Nice job Clint. I had early cast iron inlet manifold running with extractors when first got my ute and no leaks. Don’t think it had bolts in the holes. There is no actual exhaust gas passage to intake. Could be leaking at the head face? If the carb was on the lean side pre-headers, they could be enough to make a difference.


FB ute fixer upper, EK van on rotisserie

[Harv]

WD40 is your friend.

Cheers,
Harv