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Location:
Adelaide
Registered:
September 2003
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MA61 Vac line - but where does it go to ???????
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Sun, 03 July 2005 03:00
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Guys,
I am soon in the process of completing the engine (once the rad gets here), and can't for the life of me remember where this bloody hose goes  
It is an 1983 MA61 with 7M-GTE. The hose I am after is the small one with the arrow
Cheers
Michael B
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Location:
Brisbane
Registered:
February 2003
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Re: MA61 Vac line - but where does it go to ???????
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Sun, 03 July 2005 04:17
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charcoal cannister and/or vaccum-operated cruise-control accuator (if fitted)
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Location:
Brisbane
Registered:
May 2002
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Re: MA61 Vac line - but where does it go to ???????
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Sun, 03 July 2005 04:27
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Yep, charcoal canister purge (I think its called purge?).
Charles I thought the small line coming off the large line was for the cruise? Not that it matters its all engine manifold pressure regardless 
Cheers
Wilbo
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Location:
Brisbane
Registered:
February 2003
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Re: MA61 Vac line - but where does it go to ???????
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Sun, 03 July 2005 04:30
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yah ... purge would make sense - you dont want petrol fumes making their way into the booster
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Location:
Adelaide
Registered:
September 2003
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Re: MA61 Vac line - but where does it go to ???????
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Sun, 03 July 2005 06:25
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| wilbo666 wrote on Sun, 03 July 2005 13:57 |
Yep, charcoal canister purge (I think its called purge?).
Charles I thought the small line coming off the large line was for the cruise? Not that it matters its all engine manifold pressure regardless
Cheers
Wilbo
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Cheers Wilbo, I reckon you are right. The large one is for the Cruise
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Registered:
August 2002
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Re: MA61 Vac line - but where does it go to ???????
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Sun, 03 July 2005 08:00
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small one was cruise on my car, removed actuator and blanked it.
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: MA61 Vac line - but where does it go to ???????
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Sun, 03 July 2005 09:34
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I blanked mine too, but in retrospect it would have made a great line to run boost guage off
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Location:
Ballarat, Victoria
Registered:
March 2003
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Re: MA61 Vac line - but where does it go to ???????
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Mon, 04 July 2005 02:52
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| draven wrote on Sun, 03 July 2005 19:34 |
I blanked mine too, but in retrospect it would have made a great line to run boost guage off
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do you have to run the boost gauge off a plenum-side vac line or can it be anywhere? 
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: MA61 Vac line - but where does it go to ???????
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Mon, 04 July 2005 02:56
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from memory I'm reasonably sure that vac line, if you follow it along the firewall, goes back into the plenum.
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Location:
Central Coast, NSW
Registered:
February 2005
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Re: MA61 Vac line - but where does it go to ???????
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Mon, 04 July 2005 03:10
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| draven wrote on Sun, 03 July 2005 19:34 |
I blanked mine too, but in retrospect it would have made a great line to run boost guage off
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While it's a different car, i think it may be the same, so ill ask this question-
If I ran a T-piece in the line just before the cruise control actuator, could I fit a boost gauge onto that T piece and still maintain cruise control AND have a functioning boost gauge at the same time?
Will save me from running it all the way from the front of the plenum, that's all.
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: MA61 Vac line - but where does it go to ???????
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Mon, 04 July 2005 03:28
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As long as the line goes straight back to the plenum, and not to a vacuum chamber then yes.
But cruise control actuators, and the heater controls can sometimes go back to a vacuum chamber, so they can still work at WOT and boost.
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Location:
Central Coast, NSW
Registered:
February 2005
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Re: MA61 Vac line - but where does it go to ???????
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Mon, 04 July 2005 03:29
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I shall investigate where that line heads then.
Thanks for your advice.
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