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Dr Terry Offline
#1 Posted : Saturday, 15 April 2017 5:00:12 PM(UTC)
Dr Terry

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Hi Guys.

I've been doing some research on Falcon engines of the 70s, especially those fitted to the XC series.

As Byron has found, GM-H 'fiddled' the HP figures in the HJ to HZ series. It appears most manufacturers around this time did this partly due the intro of ADR27A & also the intro of SAE net & DIN standards.

It appears that Ford did similar things in the XC & XD series.

I was working on these cars when they were new & I distinctly remember the XC update model which was released in 5/78, which Ford referred to as the 'XC & 1/2'.

It was introduced to combat Holden's 'Radial Tuned' HZ series & included many minor upgrades.

The reason for my post is that very little of this is documented anywhere & I am relying mostly on my memory, which is not as sharp as it once was ! I would like some of this verified.

The main visual changes were the changes from F-O-R-D lettering on the bonnet & rear to the re-introduction of the Blue Oval badge. The 500 got perforated vinyl trim & the option lists were re-jigged in several areas.

The mechanical changes included suspension improvements (naturally) with a rear anti-roll bar introduced. The power steering pump was changed from the old 'Tin Can' C1 style to the plastic-cased C2 style. Also the engines all changed colour from the traditional mix of blue & orange to black blocks with silver rocker covers, in the same style as XD engines.

Ford didn't much much fanfare about it but at this time, but it appears that all the engine outputs were changed from 80kW, 92kW, 151Kw & 162kW for the 3.3, 4.1, 4,9 & 5,8 respectively to 82kW, 94kW, 134kW & 149kW. The first figures were published at the XC release & the second lot are XD numbers for essentially the same engines.

The main thing that I need verified is that the engine colour changed at the 5/78 upgrade as I think. Are there enough original cars out there the back this up. In other word does anybody know the existence of any update models (i.e. built after 5/78) with a blue/orange engine. Alternatively a pre update model with an XD style black/silver engine.

Thanks in advance, Dr Terry.

Edited by user Saturday, 15 April 2017 5:02:18 PM(UTC)  | Reason: Spelling

If at first you don't succeed, just call it Version 1.0
castellan Offline
#2 Posted : Sunday, 16 April 2017 9:52:31 AM(UTC)
castellan

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Originally Posted by: Dr Terry Go to Quoted Post
Hi Guys.

I've been doing some research on Falcon engines of the 70s, especially those fitted to the XC series.

As Byron has found, GM-H 'fiddled' the HP figures in the HJ to HZ series. It appears most manufacturers around this time did this partly due the intro of ADR27A & also the intro of SAE net & DIN standards.

It appears that Ford did similar things in the XC & XD series.

I was working on these cars when they were new & I distinctly remember the XC update model which was released in 5/78, which Ford referred to as the 'XC & 1/2'.

It was introduced to combat Holden's 'Radial Tuned' HZ series & included many minor upgrades.

The reason for my post is that very little of this is documented anywhere & I am relying mostly on my memory, which is not as sharp as it once was ! I would like some of this verified.

The main visual changes were the changes from F-O-R-D lettering on the bonnet & rear to the re-introduction of the Blue Oval badge. The 500 got perforated vinyl trim & the option lists were re-jigged in several areas.

The mechanical changes included suspension improvements (naturally) with a rear anti-roll bar introduced. The power steering pump was changed from the old 'Tin Can' C1 style to the plastic-cased C2 style. Also the engines all changed colour from the traditional mix of blue & orange to black blocks with silver rocker covers, in the same style as XD engines.

Ford didn't much much fanfare about it but at this time, but it appears that all the engine outputs were changed from 80kW, 92kW, 151Kw & 162kW for the 3.3, 4.1, 4,9 & 5,8 respectively to 82kW, 94kW, 134kW & 149kW. The first figures were published at the XC release & the second lot are XD numbers for essentially the same engines.

The main thing that I need verified is that the engine colour changed at the 5/78 upgrade as I think. Are there enough original cars out there the back this up. In other word does anybody know the existence of any update models (i.e. built after 5/78) with a blue/orange engine. Alternatively a pre update model with an XD style black/silver engine.

Thanks in advance, Dr Terry.

I don't believe the 6 cyl XC changed colour at all, one old dude I know of that goes on about his XC being a XC & 1/2 4.1L engine is blue in colour and my 3.3L p van was a Jan 1979 build with a blue engine.

I know that the XC V8's did perform better than when the XC first came out, but as for that being when the XC & 1/2 came out I am not sure it is true, but a 5.8L Fairlane could do 195KM/H flat out and the next type due to a carby improvement could do 210KM/H stock.

As for the KW figures the XB is in SAE Gross and the XC I believe is in Net and the XD is in DIN for the 4.9L to go down from 151 to 134 and the 5.8L from 162 to 149.
the 4.1L XC is 92KW 3900 /289NM 1900 8.9:1 Net
The 4.1L XD is 92KW 3900 /295NM 1900 9.0:1 ?
The 4.1L XD is 94KW 4000 /305NM 2000 9.35:1 DIN with Alloy head.
The 4.1L XE is 93KW 3800 /305NM 1700 9.3:1
The 4.1L XF is 103KW 3750 /316NM 2400 9.35:1 lead
The 4.1L XG is 97KW 3600 /297NM 2000 8.77:1 unleaded.
Maybe the later XC got the XD type engine but not the colour, the V8's only went black from the XD on with silver rocker covers.
My mates XD 4.1L alloy head type had a silver rocker cover and I think that the XD 4.1L iron head rocker cover was black and the XC 4.1L was red rocker cover.

Look at the Holden's they used Gross up to HZ and DIN from the 1978 VB Commodore.
Falcon used Gross up to 1976 XB and then Net in the up to 1979 XC and then DIN in the XD from 1979.
So they get their act together in the 80's with DIN figures.

But then again 140KW for a 4.9L Falcon XD verse a Commodore 5.0L at 126KW I don't believe that's true at all because a 1981 Fairlane 4.9L don't out perform a WB 5.0L Statesman do they.

XD-E 4.9L 140KW 4500 /344NM 3200 9.2:1
VC- WB 5.0L 126KW 4400 /361NM 2800 9.2:1
XD-E 5.8L 149KW 4300 /415NM 3000 8.9:1

I have to run to a car show now.
castellan Offline
#3 Posted : Monday, 17 April 2017 11:59:42 AM(UTC)
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I have XC 4.0L as 92KW 3700 /288.5NM 2400 8.9:1 in a Sep 1976 Wheels book with all the XB engines rated in DIN so it claims.XB 250 as 83KW 3500 / 280NM 1250 9.1:1
XB 200 as 71KW 4000 /220NM 1800 8.8:1
XC 3.3L as 80KW 4200 /220NM 2000 7.9:1

XB 302 as 119KW 4400 /340NM 2500 9.2:1 2 Barrel I believe it's 9.4:1
XC 4.9L as 151KW 4600 /364NM 3000 9.2:1 4 Barrel

XB 351 as 132KW 4200 /412NM 2200 8.9:1 2 Barrel I believe it's 9.1:1
XB 351 as 160KW 4400 /409NM 2900 ' '4 ' '
XC 5.8L 162KW 4500 /429NM 2700 8.9:1 4 ' '.

When looking into the F100 data from 1974 you get Net power figures even up to the years of the XD-E Falcons, but the Falcons only use the SAE Gross figures, that is a bold claim that can hide a lot of reality in what the engine does truly produce in one car to another, when looking at the 1974 to 1978 250ci in the F100 you find 3 variations of the same log head 250ci engine that the XB comes with, so I wonder why is this was the case, maybe they changed exhaust types ? what's going on ? but remember the XB 250 ended in July 1976 but she still goes on in the F100 and Transit till 1978 and from mid 1978 they get the X flow.

I think from 1984 the F100 4.1L is rated as the Falcon, but I will have to look at my notes to check that out for sure.
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