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 Post subject: Vacuum Gauge
Posted: Wed Aug 16, 2006 6:45 pm 
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How do I install a vacuum gauge? I connected the pipe through the firewall and its on a T-Piece but not sure where this should go?

Any help would be appreciated!

 

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Posted: Wed Aug 16, 2006 6:55 pm 
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Hey. Any vac line from the manifold will do the trick.

The hose going to the MAP sensor would be perfect.

 

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Posted: Wed Aug 16, 2006 10:36 pm 
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4.9 EF Futura wrote:
The hose going to the MAP sensor would be perfect.


that's exaclty the one i used.

 

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Posted: Thu Aug 17, 2006 3:07 am 
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4.9 EF Futura wrote:

The hose going to the MAP sensor would be perfect.


it would be perfect for creating vacuam lag to the map sensor. by adding to the length of the map sensor hose u'r creating a larger chamber for the vacuam/pressure to change over. do u want such a crucial sensor to read innaccurately?

 

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Posted: Thu Aug 17, 2006 10:09 am 
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TaraHymen wrote:
4.9 EF Futura wrote:

The hose going to the MAP sensor would be perfect.


it would be perfect for creating vacuam lag to the map sensor. by adding to the length of the map sensor hose u'r creating a larger chamber for the vacuam/pressure to change over. do u want such a crucial sensor to read innaccurately?


You don't add to the length, you cut the hose and fit a t-peice in, ok, so maybe I lied, you add 5mm... but you could cut 5mm off the hose to compensate and therefor be the same overall length still

 

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Posted: Thu Aug 17, 2006 11:00 am 
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5mm? are you mounting the vacuam guage in the engine bay?

 

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Posted: Thu Aug 17, 2006 11:28 am 
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I see your point Tara... but frankly i dont think the few cc of volume you are adding to this hose is going to have a material effect on the response time of the MAP sensor.

If you believe the reality to be otherwise then why not make an alternative suggestion? That's probably of more assistance to lukey than telling him what not to do.

 

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Posted: Thu Aug 17, 2006 11:45 am 
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yep, fairy muff. apologies

i'd suggest to take the vacuam from the tree

 

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Posted: Thu Aug 17, 2006 12:01 pm 
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I wouldnt be worried about MAP sensor lag.

I T'ed into the fuel reg vacuum line only because it was closer.

 

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Posted: Thu Aug 17, 2006 7:38 pm 
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Vac gauges usually have a restrictor in the line to stop the needle getting too nervous. Put the restrictor close to the tee and it will null the effects of the extra pipework.

 

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