Metric or Imperial?

**slobberingant** · 02-12-2009, 10:49 PM

I have a long standing debate with some of my friends as to when Holden switched their bolts from imperial to fully metric. Some say that Holden has been using metric bolts for many decades but only on the bodies and imperial bolts on the engine. I have heard that the VE commodore is the first model to come fully metric. Could anybody shed some light on this?

Cheers

**GetToDaChopa** · 02-12-2009, 11:31 PM

You got me thinking...

**Morton** · 03-12-2009, 12:41 AM

It's possible the VE was the first fully metric. I know the buick and ecotec motors still had one or two imperial 3/8" bolts hiding on them.

Anybody with a GenIII care to shed some light?

**greenfoam** · 03-12-2009, 12:59 AM

Gen 3 should be fully metric? I know the valve stems and such are, so I can't see why the bolts wouldn't be. If so that would make the VT's ALMOST metric: ) apart from maybe the diff and gearbox

**Morton** · 03-12-2009, 01:31 AM

I know my HQ is almost fully imperial if that helps ^_^

**greenfoam** · 03-12-2009, 08:09 AM

Almost only?

**Blown V6 Hatch** · 03-12-2009, 12:57 PM

HQ is fully Imperial Dan. As far as i'm aware, the first Holden to start the change over from Imperial to Metric was the WB. WB is a right pain, as it was basically a VB Commodore in regards to driveline so most of the fittings & bolts are metric, however there are some body bolts that are Metric (such as seat belt bolts) but all the outside body & hang on panels are imperial. As far as the first full Metric car, it really depends if its V6 or V8. Most of the bolts (i would say about 95%) on a V8 VN are Metric however, the V6 was still using some Imperial bolts when it was in a VY. Pretty sure LS1 is completely Metric.

**Head_is** · 03-12-2009, 12:59 PM

Originally Posted by Blown V6 Hatch

HQ is fully Imperial Dan. As far as i'm aware, the first Holden to start the change over from Imperial to Metric was the WB. WB is a right pain, as it was basically a VB Commodore in regards to driveline so most of the fittings & bolts are metric, however there are some body bolts that are Metric (such as seat belt bolts) but all the outside body & hang on panels are imperial. As far as the first full Metric car, it really depends if its V6 or V8. Most of the bolts (i would say about 95%) on a V8 VN are Metric however, the V6 was still using some Imperial bolts when it was in a VY. Pretty sure LS1 is completely Metric.

I'll back up the wb part of that... Most of the bodywork bolts are imperial but the engine and a few others are metric

**ScoHar** · 03-12-2009, 01:10 PM

Originally Posted by greenfoam

Gen 3 should be fully metric? I know the valve stems and such are, so I can't see why the bolts wouldn't be. If so that would make the VT's ALMOST metric: ) apart from maybe the diff and gearbox

8mm or is that 5/16"?

**TMM** · 03-12-2009, 01:32 PM

Does it matter? Everyone has a full compliment of metric and imperial tools right

**nemesis_adrasteia** · 03-12-2009, 08:03 PM

Originally Posted by TMM

Does it matter? Everyone has a full compliment of metric and imperial tools right

i ****in wish.

my cars defs has imperial bolts

**Reaper** · 03-12-2009, 08:29 PM

LS engines are metric afaik but the old 4sp auto's were A/F from memory???? ahhh fiik!

Reaper

**GetToDaChopa** · 03-12-2009, 09:36 PM

My toolbox has both, But i hardly do anything major on the car so not a problem for me.

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