converting boost guages,

MatBat · Post by **MatBat** » Sat Dec 06, 2003 6:16 pm

Just had another crazy idea.

Just got some Aux Guages 'Boost/oil/voltage'

But as I don't have a Turbo

the boost guage is sitting idle.
My idea was to convert this to a manifold pressure guage, is this possible? If so please elaborate.

All the best all.

chris1roll · Post by **chris1roll** » Sat Dec 06, 2003 6:41 pm

I was thinking about this too!
dont know yet, why not just connectit to a spare manifold hole and see what happens?

MatBat · Post by **MatBat** » Sat Dec 06, 2003 6:46 pm

It sucks the needle down to zero(being vacuum ad not pressure), seems I need to get the needle going the other way. Okay it wont be accurate but it'll be a rough indication plus it'll look pretty.

Ben Harris · Post by **Ben Harris** » Sat Dec 06, 2003 7:07 pm

Could you get something like this and then just swap the internal bits of the gauge into the turbo gauge, and then it'd work how you want it to?

Just a thought!

Ben.

MatBat · Post by **MatBat** » Sat Dec 06, 2003 7:14 pm

Thanks ben,
Not really what I'm after though, besides, it would only be reading in the 'Poor' section.

I'd like to try and redo the internals of the existing gauge, i.e. minimum cost....

Thanks though mate.

king_j · Post by **king_j** » Sat Dec 06, 2003 7:45 pm

i had one on my car you can just link it to any small pipe from the manifold as they all have the vavum from it.

the idea is it should be in the - when ideling as the engine is sucking in air but as you floor it the needle will goto 0 as the pressure is equal to the atmospheric pressure.

pol · Post by **pol** » Sat Dec 06, 2003 7:46 pm

Or what about for your fuel pressure regulator? Dont know much about it, but i know you can fit a gauge to the side of the FSE where the brass cap is screwed in...???

Or just tee in another vaccuum hose to the one going to your FSE and that might give you the manifold pressure reading.

Might not. It'd do something though! Try it!

MatBat · Post by **MatBat** » Sat Dec 06, 2003 7:52 pm

Now we're talking good idea Pol, though thinking about, the vacuum will be the same, as the vacuum for the FSE comes from the manifold. Which makes me think further, how does an FSE valve work on a turbo when the manifold pressurises?

volvofox · Post by **volvofox** » Sat Dec 06, 2003 9:34 pm

Hi,

You have no trouble at all

You can pull a tiny hose to the manifold (there must be a connecton still free) else drill a hole in the mani fold , just under the diameter of a small copper pipe. grind an end like a pencil, and knock it gently in. use a piece of hard wood not to dammage (mushroom) the top. Because of the wegde and the metals are soft its perfectly closed. eventually apply some loctite, or silecon.

This is how someone made a vacuum connection for my meter in my old DAF. (this thing functions great, it the must important meter in the car as it really is a fuel economy meter. Comes handy as you drive 1 liter in 9 km average)

secondly there is no trouble building in the clockset as it comes to the manometer: the first part (the white part) functions as any vacuum meter. If you can accept the pointer is never going in the yellow or red, you do fine. So the pointer moves in any ES in the white secion, just as a normal vacuum meter.

luck
JPF

MatBat · Post by **MatBat** » Sat Dec 06, 2003 10:34 pm

Heres what I have done:

Blanked out 'turbo, lb/in2,' and put needle round to max.
When vacuum increase needle should move anticlockwise.

strangegame · Post by **strangegame** » Sat Dec 06, 2003 11:47 pm

Just a thought could you not get it working through the rev counter

MatBat · Post by **MatBat** » Sun Dec 07, 2003 7:35 am

The rev counter is, electronic, wheras the vacuum gauge is manual. (clever little gadget inside)

It should work with the setup I have got now, fingers crossed.

hereagain · Post by **hereagain** » Sun Dec 07, 2003 10:36 am

They have what you are trying to do on Lada Samaras..Might be able to pull the stuff from one of them at a scrappy.

Don't diss the Lada, Â£300 24,000, wife crashed it into a shop, we then sold it a year later for Â£350. Mind you the kid who bought it put Sports steering wheel in and those silly Seat belt covers. The car was fun, used to go 110 mph (*eventually)..but peoples faces as you overtook them was worth the effort!!!

MatBat · Post by **MatBat** » Sun Dec 07, 2003 10:50 am

Thanks Hereagain, but I don't think I can bring myself to looking for Lada at a wreckers

No offence.

Actually the guage works as a vacuum gauge, I just connected it to the spare vacuum point on the manifold, and it works.

hereagain · Post by **hereagain** » Sun Dec 07, 2003 8:01 pm

well done

MatBat · Post by **MatBat** » Mon Dec 08, 2003 11:15 pm

My boost/vacuum guage thing works really well, but suprisingly it seems to pressurise when i accelerate? I thought it would form a vacuum and pull the needle anticlockways, so actually it works much better then expected. So all you gaugeless ES/S people get some turbo gauges!

strangegame · Post by **strangegame** » Mon Dec 08, 2003 11:18 pm

Gonna look into that now

MatBat · Post by **MatBat** » Mon Dec 08, 2003 11:19 pm

St Andrews eh?
I'll try and get some video of my boost/suck gauge working, it looks really good!

chris1roll · Post by **chris1roll** » Tue Dec 09, 2003 5:34 pm

Right, I'm doing this tomorrow then, if I have time!

dragon · Post by **dragon** » Tue Dec 09, 2003 5:39 pm

Hopefully not with the guageset I bought off you!

!