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Danwilderspin

Member Since: 15 Jun 2016
Location: Cambridgeshire
Posts: 2180

2007 Range Rover Vogue SE 4.2 SC V8 Zermatt Silver

4.2 air cooler question

Quick question - the two metal air coolers that sit after the supercharger either side, if I were to tap a vacuum line from there would it always be vacuum regardless of revs or would at a certain point in the range it switch to boost?

Thanks Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

1st Aug 2021 6:51pm

Piet

Member Since: 22 Mar 2017
Location: Maasdam
Posts: 199

2008 Range Rover Autobiography 4.2 SC V8 Lucerne Green

Hi,
Are you sure that there is vacuum / under pressure over there Sir?

1st Aug 2021 9:28pm

Danwilderspin

Member Since: 15 Jun 2016
Location: Cambridgeshire
Posts: 2180

I assume so at idle? Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

1st Aug 2021 10:27pm

Piet

Member Since: 22 Mar 2017
Location: Maasdam
Posts: 199

I'am not sure but ill think not Sir.
Look on the at-her site of the SC. (suction side of the CS)
Maybe T connection on the vacuum lines which are connected to the elbow?

Click image to enlarge

2nd Aug 2021 6:30am

tb10

Member Since: 17 Feb 2015
Location: Bromsgrove
Posts: 332

2005 Range Rover Vogue 4.4 V8 Tonga Green

Piet,

I agree with you.

Regards

2nd Aug 2021 8:07am

Danwilderspin

Member Since: 15 Jun 2016
Location: Cambridgeshire
Posts: 2180

Piet wrote:
I'am not sure but ill think not Sir.
Look on the at-her site of the SC. (suction side of the CS)
Maybe T connection on the vacuum lines which are connected to the elbow?

Click image to enlarge

Thanks Piet the bit you are holding the supercharger bypass I think it is if I T into the line going to that would that be best? Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

2nd Aug 2021 9:11am

Piet

Member Since: 22 Mar 2017
Location: Maasdam
Posts: 199

Yes, Ill think thats best
You are than between the trottle valve and the SC, for sure there you vacuum.
Do you want it for for the LPG?

Click image to enlarge

2nd Aug 2021 9:31am

Danwilderspin

Member Since: 15 Jun 2016
Location: Cambridgeshire
Posts: 2180

yes hats what I was thinking and yes for LPG thanks! Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

2nd Aug 2021 9:51am

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