75ZT Community

VIS (Variable Intake System) Motors, what do you need to know............

Everything you want to tell us. Without giving away trade secrets.

The fact I need two for my long term project car at Brothers garage.
He tells me tonight they are both (naughty word here).
Can I repair these or are they a replacement only job, they are if any help full of Oil or Crud.
Oh the joys of getting a Petrol Car.

JDC BoeingGuy wrote:The fact I need two for my long term project car at Brothers garage.
He tells me tonight they are both (naughty word here).
Can I repair these or are they a replacement only job, they are if any help full of Oil or Crud.
Oh the joys of getting a Petrol Car.

Try the Wanted forum.

Mick wrote:Try the Wanted forum.

We don't seem to have a finger smilie yet.

JDC BoeingGuy wrote:The fact I need two for my long term project car at Brothers garage.
He tells me tonight they are both (naughty word here).
Can I repair these or are they a replacement only job, they are if any help full of Oil or Crud.
Oh the joys of getting a Petrol Car.

Bring them to me on the 5th I will sort them

takestock wrote:Bring them to me on the 5th I will sort them

You are a True Gent thanks.

JDC BoeingGuy wrote:

takestock wrote:Bring them to me on the 5th I will sort them

You are a True Gent thanks.

If I have a pair ready I can swap them there and then but balance ones are a royal pain due to the oil ingress, so I may have to take them with me.

takestock wrote:VIS Motors, what do you need to know............

Yeah, I've forgotten which one is which. The rearmost motor on ours now appears not to be working.
It's also, of course, the difficult one to get to 'cos of the LPG (Liquified Petroleum Gas) installation and why could it not have failed a few weeks ago before I had the manifold off?

Bernard wrote:

takestock wrote:VIS Motors, what do you need to know............

Yeah, I've forgotten which one is which. The rearmost motor on ours now appears not to be working.
It's also, of course, the difficult one to get to 'cos of the LPG installation and why could it not have failed a few weeks ago before I had the manifold off?

Rear left is balance, top one is power

Think my balance is on the blink!!

i dont get the 2700 extra wee boost anymore am i right in thinking its the balance.

i do have a spare set but havent looked at them or tested them yet must get around to doing that..

Martin

Tazman3 wrote:Think my balance is on the blink!!

i dont get the 2700 extra wee boost anymore am i right in thinking its the balance.

i do have a spare set but havent looked at them or tested them yet must get around to doing that..

Martin

yup, thats the fella

Cheers mate....will have to dig out my spare and see what state thats in...

Martin

To aid the picture below shows which VIs motor is which

ok if the balance gives you that bit extra at about 3000 rpm what purpose does the power vis give to the car , as mine is not working ........

Its quite a complex operation it depends on revs and throttle position.

Generally with both working you obtain a smoother delivery of power, arond with a boost predominately from the balance Vis @ 3100 and a second surge from the power one around 4500

takestock wrote:Its quite a complex operation it depends on revs and throttle position.

Generally with both working you obtain a smoother delivery of power, alond with a boost predominately from the balance VIS @ 3100 and a second surge from the poer one around 4500

As you all know, I never drive above 3000 rpm,
so that's why I hadn't noticed any difference.

Bernard wrote:

takestock wrote:Its quite a complex operation it depends on revs and throttle position.

Generally with both working you obtain a smoother delivery of power, alond with a boost predominately from the balance VIS @ 3100 and a second surge from the poer one around 4500

As you all know, I never drive above 3000 rpm,
so that's why I hadn't noticed any difference.

so you drive your v8 on tick over then.