X2

From Holdenpaedia
Jump to: navigation, search

Original submission by T Apr 18th 2007:

Back to the Engine Section

An X2 HR Premier Holden showing the badge as fitted . Click to Enlargen. Photo by HQSS.

X2:

The X2 Option:

HD and HR Holdens were available in the X2 option which had an eXtractor exhaust system and 2 Stromberg carburettors (hence X2) unlike the standard HD Holden that had 1 Stromberg carburettor or HR Holden that had 1 single barrel Stromberg Carburettor or 1 dual barrel Stromberg Carburettor (WW Stromberg). Coolant heated inlet manifolds were standard equipment on all HD and HR models.

Holden HD X2's:

HD X2 cars were powered by a 179 cu. in. engine, had an eXtractor exhaust system and were fitted with 2 Stromberg carburettors.

HR X2's:

Holden HR X2 cars were powered by a 186 cu. in. engine, had an eXtractor exhaust system and were fitted with 2 Stromberg carburettors.

X2 and 186S Header Part Numbers:

Submitted by 72GTRXU1 on Mon, 07/05/2007 - 12:56. I have been consulting with Dr Terry and others on the Torana forum and this is what we have come up with. X2 Front 7428493 X2 Rear 7428495 186S 161S 173S LC XU1 Front 7433655 186S 161S 173S LC XU1 Rear 7430583 LJ XU1 Front 7428493 LJ XU1 Rear 7430583 There are 3 front sections: (A) Plain X2 (B) Heat riser drilled and (C)Heat riser Blank. As can be seen, the X2 Front and the LJ XU1 Front have the same Part Number. We assume that the Plain one (A) has been replaced with the Blank heat riser (C). Any of the 3 different front sections will fit any of the motors including the X2. However where the auto choke is to be used - part number 7433655 (heat riser drilled) must be used. The rear X2 will not fit any other vehicle except the X2 unless a custom engine pipe is fabricated. The X2 rear flange points more downward rather than more rearward. I hope this helps 72GTRXU1 aka Bazza  

X2 Dash. Click to Enlargen. Photo by Big Al's Army.
Holden 186 X2 engine. Click to Enlargen. Photo by Richard Zurawski.
X2 Composite Gauge. Photo by MRHD.
Original Holden X2 inlet manifold with Water Jacket. Click to Enlargen. Photo by Leon.

HD X2 Composite Gauge. Photo by Kinswood. Click to Enlargen
HD X2 Composite Gauge. Photo by Kinswood. Click to Enlargen
An X2 HD Holden Engine Bay. Click to Enlargen. Photo by Dev.

An X2 HR Premier Holden showing the badge as fitted. Click to Enlargen. Photo by HQSS.
Holden X2 engine as fitted to an HR Premier Holden. Click to Enlargen. Photo by Dave (Qute).
X2 Gauge. Click to Enlargen. Photo by Big Al's Army.
HD X2 Carburettors with Powerglide Kickdown Mechanism. Click to Enlargen. Photo by Qute.
HD X2 Front Grill. Click to Enlargen. Photo by Snyperdemon.

An X2 HD Holden Engine Bay. Click to Enlargen. Photo by Dev.

HD X2 Carburettors. Click to Enlargen. Photo by Blown64.
X2 Air Filter takes a Ryco A31 filter element. Click to Enlargen. Photo by Dribblybits_2.

HD X2 Boot Badge location. Click to Enlargen. Photo by UNOwen.
Holden X2 engine badge as fitted to HR Holdens with e(X)tractors and (2) Stromberg Carburettors. Click to Enlargen. Photo by Old Holden.

X2 headers. Click to Enlargen. Photo by Yogie.

 
Holden X2 engine as fitted to an HD Holden. Note the Brake Booster and that the Engine has the correct Oil Filler Cap. Click to Enlargen. Photo by Blown64.
Holden X2 engine as fitted to HR Premier Holden. Note that the Engine has the incorrect Oil Filler Cap. This will cause Oil leaks due to lack of adequate Crankcase Ventilation. Click to Enlargen. Photo by Dave (Qute).

 

 

HR X2 Info:

This will repeat some that has already been posted but from my HR workshop manual X2 section it lists these changes to make it an X2 engine package vehicle, as that is what a X2 was.
A HR that had this package fitted
X2 Engine available for all HR models.
The engine is a modified 186 with a max power output of 145 bhp at 4600 rpm and gross torque of 184 lb ft at 2200 rpm. The engine is painted deep rocket red with a transfer saying Holden-186-X2 on the rocker cover.
The engine number starts with 186 and the letter K.
The engine mods are Improved material crankshaft bearings Ie Trimetal high lead base babbitt electroplated on aluminum alloy bonded to steel back. Moraine-400.
Redesigned cam with increased overlap and opening period. The listed cam specs are In opens 43 deg BTC. In closes 83 deg ABC. Ex opens 78 deg BBC. Ex closes 48 deg ATC. Aluminium alloy water heated wider twin carby inlet manifold.
Twin exhaust manifolds.
Twin 161 modified carbys both carbys throttle and chokes are coupled together.
Carbys on a manual trans models have the vacuum spark control holes located above the throttle valve and are stamped X2M on the front exterior of the float chamber.
The carbys on the auto models the vacuum spark control holes are located below the throttle valve.
The carby specs are BXUV-2 modified carbys.
Main venturi size 1.094 ins. Flange size SAE 1 3/4 with 1.31 dia. bore. .055 ins main jets.No. 56 drill power by-pass jet. Idle discharge hole upper No.64 drill.Idle discharge hole upper No. 70 drill. Idle tube No. 70 drill. Idle air bleed No 52 drill.
Twin attachment air cleaner with polyurethane element and intake silencer.
Modified throttle linkage to suit the twin carbys.
Exhaust front pipe starts twin from the manifolds and blends in to a y connection midway between the manifolds and the Muffler into a single 2 inch pipe.
Muffler is a straight thru oval shaped and is 7.75 in X 3.25 in X 14.14 in long.
Tail pipes increased in size to Front 1.875 in and rear tailpipe 1.50 in on models 215A 225A 235A and 1.75 in on all other models.
There was also a straight through resonator fitted The engines used a std dissy and std timing.
There was a modified dash and wiring harness that came with the X2 engine package.
The dash had a oil pressure gauge and a temp gauge and a ammeter and a fuel gauge and a generator tell tale light.
On the body they added 3 X2 badges.
I hope that helps a bit.
Something I have been told but I am not 100% sure on is that X2 HR's should have a D stamped on the ID tag.
This does not prove that it is a X2 just that the car as been optioned. (X2 engine package is a option)
So this D will also be on any other base model car that has been optioned too.
Interested to hear if anyone else has heard of this as well.
Cheers Paul.

X2 Cam:

The Genuine part Number for the X2 cam was 7428531. End of submission by snowdownunder.

X2 PCV:

there was a kit put out by dufor for this had every thing in it to do this i have seen them selling at swap meet for $20.00
new old stock has all the hose fittings ,hose pcv valve and instructions , if your in vic maybe check out the warragul swap meet i saw he will be there. you shouldent have to drill any holes should be a screw in plug on manifold you unscrew and screw fitting into. wombat..

X2 Aircleaner Colour:

I did say i didn't know, but i did paint mine the colour of my monaro, which is camaro gold......the code is 567-12186.

End of submission by Blissy.
Silver on HD , gold for HR.
HD X2 Airfilter. Click to Enlargen. Photo by DR Stitch.
179 Engine in an X2 HD Holden . Click to Enlargen. Photo by DR Stitch.
179 Engine in an X2 HD Holden. The Powerglide kickdown linkage is shown. Click to Enlargen. Photo by DR Stitch.

HD X2 Ad:

https://www.youtube.com/watch?v=boVvNZEdy0E

Links:

App65HD's Shed

Air Filter Thread

WWStromberg

Terms:

Terms

Back to the Engine Section