27 replies to this topic

[claysummers]

Ok gurus here is one for you.

Can anyone say if straight six engine mount plates, that bolt to the block, changed geometry from EH through to VK? I am of the opinion they didn't change but Blacky on the FB EK forum reckons he has found several variations, causing him grief in installing a blown red in an EK.

I'm aware of the strengthening applied to passenger side plate at some change but this didn't affect geometry.

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[Dr Terry]

I'm almost certain that there was no geometry change to those engine mount brackets.

 

The only change that effects fitting is when they introduced the wider rubber mount for HK onwards. The earlier mounts (EH/HD/HR were 1/4" in narrower, but if you centred them with an 1/8" washer each side, final position was the same.

 

My brother EH runs a VK EFI engine, using Commodore mounts & brackets, no problems.

 

Dr Terry

[S pack]

Hi Clay, I thought the brackets were the same geometry for all Holden straight 6cyl engines but that said I have never directly compared EH brackets to HK or HQ etc.

[claysummers]

Thanks Dr T and Dave for confirming my thoughts.


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[76lxhatch]

I've seen them with various amounts of bend which can be difficult to spot

[UCSLE]

he hasn't picked up Starfire mounts ? they wouldn't fit but look kind of the same

[gtrboyy]

Thought lc/j brackets were different to lh/x or kingies

[rodomo]

Ok gurus here is one for you.

Can anyone say if straight six engine mount plates, that bolt to the block, changed geometry from EH through to VK? I am of the opinion they didn't change but Blacky on the FB EK forum reckons he has found several variations, causing him grief in installing a blown red in an EK.

I'm aware of the strengthening applied to passenger side plate at some change but this didn't affect geometry.

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I'm pretty sure 1 plate goes in front of the mount and the other goes behind for correct fitment. Maybe this is where his trouble lies?

[claysummers]

Don't think so RobHe reckons he found three different types in his stash.

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Edited by claysummers, 22 March 2022 - 09:52 PM.

[S pack]

The following mounting bracket part numbers are listed to suit the following models with 6cyl engines.

Unfortunately I don't have parts catalogues for EH, HD & HR Holden.

 

LC and LJ Torana (pre ADR 10B)

HK, HT, HG Holden.

HQ Holden (pre ADR 10B & excl air)

Bracket engine mounting L.H ..........................................7427365

Bracket engine mounting R.H ..........................................7427366

 

LJ Torana (ADR 10B)

LH & LX Torana (excl air)

HQ Holden (ADR 10B), HJ, HX, HZ (excl air)

Bracket engine mounting L.H ..........................................9929041

Bracket engine mounting R.H ..........................................9929042

 

All HQ, HJ, HX, HZ Holden (with air)

LH & LX Torana (with air)

Bracket engine mounting L.H ..........................................2814771

 

WB Holden (excl air)

Bracket engine mounting L.H .............(9929041).............7427365

Bracket engine mounting R.H .............(9929042).............7427366

 

WB Holden (with air)

Bracket engine mounting L.H ..........................................2814771

[claysummers]

Thanks Dave,
That may explain things.


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And I’ve got the EH HD HR catalogue.


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[Dr Terry]

EH, HD & HR use the same 7427365/366 as HK-HQ.

 

9929041/042 replaced them for ADR10B in HQ-WB. These mounts were strengthened with extra pieces welded on.

 

2814771 (LH) was for the a/cond bracket.

 

VB-VK Commodore went back to the 7427365/366, apparently the ADR10B mounts weren't required for compliance in the later cars.

 

Dr Terry

[MFM]

Gents I assume LJ XU1 engine mounts were no different to standard LJ 6 cylinder? 

[Dr Terry]

Gents I assume LJ XU1 engine mounts were no different to standard LJ 6 cylinder? 

Correct.

 

Dr Terry

[claysummers]

Thanks Dr Terry. I believe the geometry remained basically the same for the Torana HQ HZ, apart from maybe minor longitudinal displacement due to the welded on strengthening plates and corresponding spacer.


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[UCSLE]

what problems was he having ? putting each bracket on the wrong side ?

[claysummers]

He wasn’t specific Troy but you can see from the photo above he had two quite different mounts. Geoff Black, he has been mucking around with Holdens a long time including red six speedway cars, otherwise I wouldn’t be giving it credence.


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[UCSLE]

the two different mounts are a pair , top is a drivers side and bottom is the passenger side .

 

its been awhile since i have worked on a 6 pot but i don't think you can put them on the wrong side , the bolt holes are different sizes ?

[RallyRed]

Yeah, The passenger side has 1 larger bolt

[claysummers]

That will be it Troy. I had it in my head they were sane smart from the large bolt hole. That is embarrassing. Blacky is in for it. He made a custom on the driver side to clear steering shaft. Then tried to fit the driver side bracket on passenger side. Didn't fit so he fabricated something. Doh doh doh.......

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[Bruiser]

Too easy to forget what you used to know
No matter how clever you are

[claysummers]

I've never been able to get the dosage right with borbon myself

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[IanC]

Yeah, The passenger side has 1 larger bolt

would someone be able to tell me the bolt sizes for the engine mount brackets to engine please. Thanks in advance Ian.

[Kockum]

Here you go -   3/8" - 16 x 11/16" 

 

                        7/16" -14 x  7/8"

[IanC]

Thanks Kockum.