186

From Holdenpaedia

Original submission by T Mar 21st 2007:
Back to the Engine Section

Contents 1 186: 1.1 Description: 1.2 Block ID: 1.3 Links: 1.4 Terms:

[edit] 186:

[edit] Description:

186 Cubic Inches Displacement, 6 cylinders.
Bore 3.625"
All the red sixes have the same 3.00" stroke except the 201, 202 and 3.3 which have a 3.25" stroke.

Blue and black 3.3's also have a 3.25" stroke. 

These engines appeared in late model HD's.
These engines were originally fitted to HR Holdens, then HK-T-G. They used adjustable valve gear.

The Red Baron's Shed
Red Baron dissembles Blissy's 186s images
Darren's Shed Superbly rebuilt HK Premier showing a 186 with all the decals.
Richard Zurawski's Shed

 

The Red Baron rebuilds Blissy's 186s

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

 

 Red 186 Identification chart.

MODEL	Introduced mm/yy	Finished mm/yy	Engine prefix	Capacity CuIn (cc)	Power bhp (kw)@rpm	Torque ft.lbs.(Nm)@rpm	Compression
HR	4/66	1/68	186A	186(3048)	126(94)@4200	181(245)@1600	9.2
HR	4/66	1/68	186X2	186(3048)	145(108)@4600	184(249)@2200	9.2
HK	2/68	5/69	186P	186(3048)	126(94)@4200	181(245)@1600	9.2
HK	2/68	5/69	186S	186(3048)	145(108)@4600	184(249)@2200	9.2
HT	5/69	7/70	186H	186(3048)	130(97)@4400	181(245)@2000	9.2
HT	5/69	7/70	186S	186(3048)	145(108)@4600	184(249)@2200	9.2
HG	7/70	7/71	186H	186(3048)	130(97)@4400	181(245)@2000	9.2
HG	7/70	7/71	186S	186(3048)	145(108)@4600	184(249)@2200	9.2

 

Holden 186 engine. Click to Enlargen. Photo by The Red Baron.	Holden 186 engine badge as fitted to HR Holdens. Click to Enlargen. Photo by Old Holden.	186 badge on an HR Holden Sedan. Click to Enlargen. Photo by Barry Brook.
Holden 186 engine badge as fitted to HK-T-G Holdens with single Stromberg Carburettors. Click to Enlargen. Photo by Old Holden.	Holden 186S engine badge as fitted to HK-T-G Holdens with dual throat Stromberg Carburettors. Click to Enlargen. Photo by Old Holden.	Holden 186S engine with the sump removed showing pickup tube. Click to Enlargen. Photo by Red Baron.

 

 

[edit] Block ID:

 

Count the welsh plugs on the starter side of the block 3=149, 5 (3 big, 2 small) = 179,186,161 ect
Cheers

Q-ball.

 

[edit] Links:

Bubsy's Shed

 

 

[edit] Terms:

Terms

Back to the Engine Section