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the v8 disc are 16mm compaired to the 6 cyl which are 12.7 the v8 caliper has a spacer wedge to make up the difference
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Holden NEVER had different brakes for V8 and 6 cylinder, except HT 350 manual. ALL HGs have HT 350 manual discs.
Warren
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Warren is spot on. There are so brake parts catalogues & websites out there which list otherwise.
To clarify it, here how it is.
HK - All front discs 1/2" (12.7mm). Discs brakes only standard on GTS, GTS327 & Brougham. Optional for all others.
HT - All front discs (except 350 GTS manual) 1/2" (12.7mm). GTS 350 manual use 5/8" (15.875mm). Discs brakes only standard on GTS, GTS350 & Brougham. Optional for all others.
HG - All front discs 5/8" (15.875mm). Discs brakes only standard on GTS, GTS350 & Brougham plus any others when a V8 is optioned. Optional for others.
Dr Terry |
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quote:
Originally posted by Warren Turnbull
Holden NEVER had different brakes for V8 and 6 cylinder, except HT 350 manual. ALL HGs have HT 350 manual discs.
Warren
Hi Warren. Its the old saying, NEVER say NEVER. What you say is correct for the older series but the current VE range have a larger standard brake package for V8s than they do for V6 models. Dr Terry |
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That is why I said Never had, as I knew latter on, but for the period up till VE this was not the case.
But if I had a dollar for every V8 Brake booster, or discs, I would be a rich man.
Warren
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Warren
Torana ran a bigger booster for a V8, so I suppose a $ for every V8 one of those would still be a good score!
The other oddball one where one engine choice runs bigger brakes is the A9X period, where a choice of a 5.0L in an LX got you bigger brakes. Not just for V8 I know, and not a Holden, but not that different to HT GTS350 manual compared to HT GTS V8. Similar deal with L34 engine option too I suppose.
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All,
There are quite a few statements made in this subject so far that are not correct.
We need to state that we are talking about DISC brakes specifically, as HK Holdens sure did have different drum brake specifications for V8 and 6 cylinder vehicles.
In HT series, ALL GTS 350s had the same brakes - thicker rotors and increased capacity master cylinder.
On the subject of Monaros, the VZ Monaro got a unique brake system not fitted to any other vehicle in the range.
There is more, but in answer to the original poster the rotors are interchangeable.
Hope this helps out,
Ben Stewart.
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quote:
Originally posted by shifty350
All,
There are quite a few statements made in this subject so far that are not correct.
We need to state that we are talking about DISC brakes specifically, as HK Holdens sure did have different drum brake specifications for V8 and 6 cylinder vehicles.
In HT series, ALL GTS 350s had the same brakes - thicker rotors and increased capacity master cylinder.
On the subject of Monaros, the VZ Monaro got a unique brake system not fitted to any other vehicle in the range.
There is more, but in answer to the original poster the rotors are interchangeable.
Hope this helps out,
Ben Stewart.
Hi Ben. My mistake (brain fade) with the 350 manual thing, I must have been thinking about the 25-gallon fuel tank. With the increased capacity brake master cylinder for GTS 350. I was under the impression they were all 1" bore in that series, what else was changed. I didnt list the VZ Monaro difference as I thought we were talking about 6-cyl vs V8 brakes. Having said that there were several earlier Commodores which had different brakes to match engine specs. VL for example had larger diameter rotors & finned calipers for V8 & turbo models. These were also seen on many VL Police packs. This carried over to VN & VP V8 (& Police packs). By VR/VS they were all the same again. Police pack VT/VX etc. had pads with much bigger contact area, but the calipers & rotors were unchanged. Dr Terry |
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Hello Dr Terry,
The master cylinder used on the GTS 350s in HT and HG has a taller body with a unique bail for the lid (same 1" bore). The volume of fluid was increased as a result, and this combined with the new improved pressure bleeding through silica gel filters in the assembly plants produced a substantially better brake system than that used on the HK GTS 327. Well, thats what Holden claimed at the time...
I know all about the brain fade thing. I spent about 30 mins. trying to get this forum thing happening again here this afternoon!!
Nice to talk again,
B.
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Does this mean all HT350 manuals had a .125" spacer in the calipers to accommodate the .625 rotors and HT350 Autos had .500" rotors? |
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No, Ben spells it out above ie all GTS350 HT had the same brakes.
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