2003 Hilux 3TD SR5 boost gauge.

Submitted: Friday, Apr 11, 2014 at 18:34

ThreadID: 107209 Views:1734 Replies:1 FollowUps:4

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flyingfrenchman

Hi everyone,

Looking at installing a boost gauge on the lux and unsure where the reading is usually taken from. Someone mentioned to me a blank spot on the Christmas tree it can be taken from? Can anyone shed some light for me?

Cheers

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Reply By: Athol W1 - Friday, Apr 11, 2014 at 19:58

Friday, Apr 11, 2014 at 19:58

flyingfrenchman
Any suitable location between the Turbo and the cylinder head will work, as you are only measuring the engine inlet pressure. If there is a christmas tree on the inlet manifold then use it if you can.
Hope this helps.
Regards
Athol

AnswerID: 530350

Follow Up By: flyingfrenchman - Friday, Apr 11, 2014 at 22:43

Friday, Apr 11, 2014 at 22:43

Thank you Athol. Excuse my ignorance but what exactly is a Christmas tree in regard to the inlet manifold? Is it a series of ports to enable sensors and the like? What does it look like?

Thanks again.

FollowupID: 813274

Follow Up By: The Bantam - Saturday, Apr 12, 2014 at 09:47

Saturday, Apr 12, 2014 at 09:47

What does it look like?

Like a christmass tree!......sorry could not resist.

cheers

FollowupID: 813288

Follow Up By: Athol W1 - Monday, Apr 14, 2014 at 13:44

Monday, Apr 14, 2014 at 13:44

Flyingfrenchman
What is commonly referred to as a Christmas Tree in automotive terms is a part that is screwed into the engine at some point (in this case the inlet manifold )and it makes one drilling into that part available for multiple connections. In this case it could be the original tapping for some vacuum operated component where the Christmas Tree has only been opened up (by removal of a nipple) for a single, or a number of different components.
Often they are used for the vacuum supply to a brake booster, and also the vacuum supply to the air conditioner or similar.

Hope that helps
Regards
Athol

FollowupID: 813475