17 replies to this topic

[tonkstoy]

Hi all can someone tell me what the difference from a 186A and a 186S


186A 186 126(94)@4200 181(245)@1600 9.2

186S 186 145(108)@4600 184(249)@2200 9.2

yep I know its a silly question but it would be good to understand it more

[limo]

camshaft, 2barrel ww carby and headers, similar to GTR

[micklx]

A 186A is the standard HR engine with single barrel carb.
186P is standard engine from HK,T,G can't remember if it was still 126 hp or if it went to 130
186S is the engine found in 6 cyl GTS Monaros and a few HR's.
The 'S' has twin exhaust headers, twin barrel stromberg carby with larger A/C, mild cam, slightly larger valves, this was the engine that all 186/202's should have been. Stronger all through the rev range but especially in the top end.

LC GTRs had a 161/173 version of the S

Some people tell you the 'S' had a steel crank, others tell you they all did.

[tonkstoy]

thanks guys , I have 2 STD bore 186 engines a 186A and a 186P and have also scored a 202 STD bore engine, and all totally complete with all the bits ,I have a LC 2 door S Torana , so now just decided which motor to rebuild and what to do with it to give it a few more horses

Edited by tonkstoy, 03 February 2008 - 08:29 PM.

[tonkstoy]

have driven a car many years ago with a 186, my Torana currently has a 202 bore 60 thou , currently with a 350 holley but i did have triple SU on it ( taken them off for a service ) all the rest is pretty standard ( i think as it came with the car ) so i am just looking to find the best combination , i do like the idea of 186 bored to a 192 , so looking for comments of people think

tonks

[Dr Terry]

A 186A is the standard HR engine with single barrel carb.
186P is standard engine from HK,T,G can't remember if it was still 126 hp or if it went to 130
186S is the engine found in 6 cyl GTS Monaros and a few HR's.
The 'S' has twin exhaust headers, twin barrel stromberg carby with larger A/C, mild cam, slightly larger valves,  this was the engine that all 186/202's should have been. Stronger all through the rev range but especially in the top end.

LC GTRs had a 161/173 version of the S

Some people tell you the 'S' had a steel crank, others tell you they all did.

Hi Guys.

Yes, a 186A is a standard HR 186 motor.

A 186P is the standard HK/T/G 186 motor.

A 186S is the optional 186 'S' engine for all HK/T/G (except Brougham & GTS 327/350) & is standard fitting for the Monaro GTS in those model series.

The HR 186 'S' motor is stamped 186K. AFAIK the only difference between a 186K (HR) & a 186S (HK/T/G) is the sump & pick-up.

There is no difference in air cleaner size between a 186 'S' & a standard 186.

AFAIK all 186 'S' have a forged steel crankshaft.

To answer tonkstoy's original question, I would use the 186 'S' head, carby & manifolds & build a 202 'S'. You will need the 186 pushrods as well.

Dr Terry.

[tonkstoy]

thanks Dr Terry

tonks

[FastEHHolden]

186 are longer...I don't have the specs on me...but I have a box full of them too

[tonkstoy]

gents heres a pic of my toy