I know this has probably been asked before but not on this forum, i ran a search and got nothing.
I just need some help installing a boost gauge.
What vacuum lines have you guys installed yours too?
I want it to read vacuum as well as boost.
You could install it off any vacume line if you wish.
Personally, I think closer to the plenum chamber the better. On mine, I tapped a new hole directly into the plenum. This way my reading is exactly what is happening in the plenum. If you install it off another vacume hose or line, you may get a slightly out reading. Not much, but slightly different. Also makes it easier to fault find in future.
If you are not competent in tapping a new hole, I would pick a single outlet and go buy a double to replace it. Then it is just a matter of unscrewing the old and in with the new.
another boost gauge question. got a gauge (2 actually) where its just the vacuum hose and no end bit to connect it to the vacuum hose on the car or anything. does that make sense? :? i dont have the connection for the boost gauge hose -> vacuum hose is what im trying to say... can i grab something that will do the job from like a hardware store or something?
Usually, the vacume tube from the boost gauge is clear and hard and thin in diameter. When you buy a unit, it comes with a brass fitting with three parts. The first is the nut which taps into your plenum. Once this is done, you then slip the capping nut over the tube. Then there is a little collar thing, which fits firmly over the end of the vacume pipe. You then insert the end of the pipe with the collar right at the end into the first nut you tapped into the plenum and pull back the second nut you first put of the tube. This then screws to the first nut, mean while squashing the collar which makes an air tight seal. Very hard to explain.
Ii have seen some dodgy setups using T pieces but are generally un reliable.
droo if your talking about the little plastic hose that comes out of the back of the gauge and is only about 3mm wide then go to autobarn and get the fittings . one is a nut that slides on to the hose two is a little thing called an olive witch then slides on the hose three is a tread that the 1st nut you put on connect to when you thighten them together the little olive gets sqwashed and seals the hose and the thread thingy gets put in the inlet plenthem hope this helps about ten bucks in total : dohhh thats why i had trouble vlt06 was posting at the same time lol
Some original photos have not been recovered yet.
Quote:
the thread thingy gets put in the inlet plenthem
where in the plenum? i dont want to have to drill and tap my own hole. i just wanna do it with a T piece this has worked well for me in the past. i dont think we have autobarn in perth? ill have a look at repco and marlows tomorrow. my boost gauge feels kinda ricey just hanging there doing nothing...
there is a hole pre drilled in the plenum , although its covered by a small metal plate.
anyway check out this pic and you will see it.
the pic is off the plenum upside down , its between the 3rd and 4th runner.
www.members.optushome.com.au/slow_vl3
just in line with the hole in the fire wall on drivers side is a standerd thread that comes out with an L shap fitting on it you can get one from autobarn or somewere i think the standard one has two out lets so get one with tree or four put it in then plug up any you do not need i think one goes to the vac for the vents and so on and as they do not use much air if any ( they just need + and - air pressure to work) so should not make that much diff to the gauge reading cheers
OVLO87: that is on the underside of the plenum? i think i found it. so you unbolt that plate and the hole is underneath it? seems hard to get to. hafta try tomorrow when ive got more light. i have the parts to hook up the boost gauge that way if i can find that hole.
well i got bored and took off that plate but the hole inside is too big for the connection ive got (which looks exactly the same as the one in your pic). but then i looked at it again and you have the brass thing screwed into the plate. so did you drill a hole in that plate yourself?
You can use the 'T' piece under the vacuum feed for the brakes, it is a feed for your heater controles. You need to buy a :-
Reducing bush 1/2nptm x 1/8nptf $4.78
Male run tee 1/8npt $5.98
Male hosetail 3/16hose x 1/8nptm $1.73
Run your hose through the throttle cable gromett to the boost gauge.
The vacuum feed for the heater just goes on the hosetail, looks neet. 8)
dr00 - you need to get another brass fiting , its about 5/8" , the it reduces to the 3/8" bit that you have.
id prefer to do it this way as there will be less chance of one of those vacuum hoses comin off etc under boost.
your choice , it looks pretty neat and professional though. ill try and get a pic of mine up.
well i sacrificed the air con for my boost gauge at the moment (to the disgust of my gf) so ill work it out when i get time. in the mean time ill have fun playing with the boost 8O
Some original photos have not been recovered yet.
