All that lovely air !!!!

spoons · 6th September 2007, 20:21

For some reason Vauxhall put a blanking plate behind the grill on a 1.9 CDTi engine which prevents ANY air getting through. Therefore the only air getting in is from the very top (just under the bonnet lid, and the very bottom)...

Well not now.... look what I've gone and done.... cut it all out !!!

Oooooops.... how did this photo get in here......

**Duncan** · 6th September 2007, 20:23

Is that not to make sure no water gets into the air intake? - bad news for a diesel.

spoons · 6th September 2007, 20:25

Originally Posted by Duncan

Is that not to make sure no water gets into the air intake? - bad news for a diesel.

Good point.... dunno... doesnt the 3.0 CDTi have the same problem then ?

EDIT:: Dont Watercoolers squirt water into diesel combustion chambers to improve performance on trucks ???.... I'm not saying thats what I intended lol... but how can it be that bad ?

**Drinky** · 6th September 2007, 20:27

More a case of stopping water getting into the engine electrics when you are following fast moving traffic just imagine how much water is sprayed on your car on a wet motorway at 70 MPH

spoons · 6th September 2007, 20:30

Originally Posted by Drinky

More a case of stopping water getting into the engine electrics when you are following fast moving traffic just imagine how much water is sprayed on your car on a wet motorway at 70 MPH

Errr... guys... the VXR and 3.0 CDTi all have open grills.... so does practically all the other vehicles I've ever owned... just not the 1.9 CDTi...

You lot havin a laugh !!

**Drinky** · 6th September 2007, 20:31

Would we do that Steve .............................................

**Duncan** · 6th September 2007, 20:31

Originally Posted by spoons

Good point.... dunno... doesnt the 3.0 CDTi have the same problem then ?

I believed all the diesels had a blanking bit on the grille over where the air intake is - to stop water getting in. The petrols are open grilles. Must admit, I've never seen one like that where it's totally blocked up!!

Originally Posted by Drinky

More a case of stopping water getting into the engine electrics when you are following fast moving traffic just imagine how much water is sprayed on your car on a wet motorway at 70 MPH

Wouldn't think that would really be a problem, it's the rad/intake area that it's all going to hit first. On the petrol models the grilles are not blanked off so it can't be an issue.

**Drinky** · 6th September 2007, 20:33

Lets see how dirty Steves engine gets !!!!

spoons · 6th September 2007, 20:36

Originally Posted by Duncan

I believed all the diesels had a blanking bit on the grille over where the air intake is - to stop water getting in..

This is a good point though Duncan and I'm amazed it hasnt been raised before... but anyway, I would like to get to the bottom of this question thats for sure

EDIT: Not that I intended to use the VXRD as a boat !!

**rushy** · 6th September 2007, 20:44

I think water injection is just a mist/spray, the flap is to stop hydraulic lock where a large amount of water is sucked in and essentially water cant be compressed so the piston head hits a solid force and boom! It happened to my old mans 407 hdi. Petrol's work on a lot lower compression so there is less risk of damage. Also as you have a turbo you are actually sucking air in so this makes the risk higher. You can buy a connection/valve thing that goes in your intake to stop hydraulic lock, I have only seen it in the states.