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Double post !!

Sorry I don't know the thread pitch, but I can confirm that there are 2 different threads for both types of master cylinders (factory, PBR & other aftermarket types).

The early tin type (FE to early HD) had a rounded thread form which was smaller in diameter to the later cylinders. ABS & other ...

Are those nylon ties "period correct" ?

Dr erry

ardiesse wrote: Mon Aug 01, 2022 5:36 pm Another exception: the family HR, which had Lucas electricals and AC instruments, and is so far the only one I know like that. Every other HR I've seen was Bosch/VDO.

I've had many HRs in with Lucas distributors, probably more than any other Red motor models series.

Dr Terry

When discussing rear end ratios with they guys who have been doing it for years their advice to me was to work back from the finish line.


Exactly right. We drag raced at Castlereagh in the early 80s & we used to calculate the rear end ratio & tyre size by aiming to go over the finish line at 1 ...

What wattage is your iron ? I have a 100W soldering iron that is way better to use then the pissy little 15 or 25 W ones, although now my weapon of choice is my 12V Milwaukee battery iron.

I recently purchased one of those Milwaukee 12V cordless soldering irons. Best tool I've got in the last ...

Early VGs still had the 225 slant motor, until the 215 Hemi replaced it.

This ute has a 4-speed which wasn't available in a any VG, so it's most likely had an engine transplant as well.

Dr Terry

Check my reply in post #12 here: http://www.gmh-torana.com.au/forums/top ... fferences/

Dr Terry

I'll still call BS on it being any type of "factory" convertible.

The simple facts are that the factory was flat out developing new models platforms, new (Red) motors, automatic transmissions, all-synchro manuals (3 or 4 sp), disc brakes etc. etc.

Also convertibles were not popular in Australia in ...

The early 161 & 186 engines (pre-June 67) had no PCV either. The 186S was the first.

The best way to plumb a PCV to X2 carbies is to make 2 adapters to fit under the carbies & fit a 3/8 diameter tube to each, run these to a T-piece & then to the PCV valve.

Have a look how GM-H did it on XU1s.

Dr ...

It's a 'standard' imperial size TC seal.

1.437" is 1-7/16". So the seal is 1" x 1-7/16" x 1/4".

It will work much better if you remove the pitman shaft & polish the seal area. Many are quite rusty at this age.

Dr Terry

Lucas, mmh!!

Do you know why the English drink warm beer ?

Because Lucas built their fridges.

Dr Terry

Maybe the change to the Y-pipe happened late in HD production.

Yes, the early HD's changed to the HR type rear header at engine number 186K171370.

Cheers,
Harv


Hi Guys.

I reckon the whole X2 header thing has caused more confusion over the years than just about anything else Holden.

Engine ...

AFAIK that device is either a fuel regulator or damper. The theory was that they took the pressure & pulsation away from the needle & seat in an effort to prevent flooding & vapourisation as well as extending its life. I've seen several versions over the years.

Whether it actually worked or not is ...

That 5mm difference between the hole & non-hole HR rims is spot on.

One of the oldest Holden myths was that the hole signified that they were "disc brake rims". Simply NOT TRUE.

AFAIK the HD/HR rims with the 90mm backspace (& no hole) were fitted to all HDs, plus HR commercials whether they had ...