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Messages - Ian_D

Pages: [1] 2 3 4 5 6 7 8 ... 168
1
Omega General Help / Re: Just Curious
« on: 27 January 2014, 18:38:19 »
LOL everyone be normal  ::)

Dublin is going to test these theories. Let's discuss the results then.

One thing i want to know though....... what tests can he perform? i suggested vacuum gauge but i think someone said thats not appropriate.  :-\

The tests I would wish to see results of are ...

1. Absolute air pressure in the crankcase with the void sealed and the breathers fully cleaned

2. Absolute air pressure in the crankcase with the void sealed and the breathers fully blocked

3. Absolute air pressure in the crankcase with leaking cam covers, (all other aspects of void sealing being normal), and the breathers fully blocked.

This would indicate the (1) system under normal operation (2) The pressure the system will, potentially, build to before doing damage to cam cover seals and (3) the stabilised pressure once the cam cover seals fail and leak.

I would expect (1) to be below atmospheric (partial vacuum) and (2) & (3) to be above atmospheric (positive pressure).

If the "idea" of some PRV is still the target, the value of the relief would have to be well below (2) and probably below (3) for best operation ... although, as previously stated, I don't believe it is necessary.

There is no point in doing any tests where the void is not sealed as designed..  :)
Agree 100% ...

Would also be interesting to see the results at different load/throttle too!

2
General Discussion Area / Re: Painting Garage Floor
« on: 20 January 2014, 00:40:09 »
Don't paint yourself into a corner!  ::) ::) ::)
My 'tandem double garage' has an up & over door at the front & a pedestrian door at the rear. I set off painting mine at the back at painted towards the big up & over. When I'd almost finished I tried to open the up & over from the inside to find that SMBO had since returned & parked right up to the door ...... the door wouldn't open &  couldn't get out unless I walked over my nice newly painted door!!  ::) ::) ::) ::) No phone in pocket .... hadn't quite been invented yet & she couldn't hear me shouting. I could just about reach the fuse box so switched the lights on & off till she came looking to see WTF I was playing at!  ;D ;D ;D ;D ;D

When I did mine (I read the instructions afterwards & I should have let the paint down 50/50 with thinners for the first coat  ???)

 ;D ;D ;D Trust you Andy!  :y

3
Omega General Help / Re: Just Curious
« on: 20 January 2014, 00:33:54 »
So what do we know about the ventilation system...
All engines will pressurise the crankcase - hence the need for it to be vented (into the intake system these days)
All engines create pressure because of blow-by. Which as the engine wears, increases...
The harder and faster the engine works, the bigger the bang, and there's more of them! hence the greater the blow-by....
The breather system uses tiny pipes + holes, which limit the amount of crankcase ventilation into the intake.

So, could... and this is only a 'COULD' it be that if you add up all of the above... you exceed the amount which the standard breather system 'USED' to cope with when it was a new engine?

Just my thoughts...  8)
My gaskets have been fitted for about 150k, with minimal weeping, ie next to none. Engine has done nearly 263k and isn't pressurising in any way shape or form, so I really don't buy that :-\

Sorry.

I scrapped an Omega a couple of years back for a number of reasons - one of the reasons was the engine: Oil was like tar, Needed cambelt, cam covers were leaking and it ran a bit lumpy. BUT, the decider was it had a slight rattle/tapping noise from the bottom end and the blowby was excessive. Yet, this car had only covered 84k miles.... All down to how its been looked after / serviced. Pitty really as it was a facelift (X reg i think, 2.5 GLS) in good condition (only mark was on the front bumper).

4
Yikes!

What happened?  :o

5
Omega General Help / Re: Just Curious
« on: 19 January 2014, 01:10:54 »
Interesting read.

I get what your saying too, and I think its potentially a good idea - after you've changed your gaskets that is... but you know that anyway!  :y


Anyway, bear with me as this is all made up in my head, but imagine this possible scenario...

Lets assume that you have just fitted new gaskets and cleaned the breathers etc, and the leak seems to be sorted.... you have left it running on the drive for 20 mins, and all is fine.
You drive a few miles to say Tesco and back... all seems fine...

So, we conclude that the gaskets have stopped the oil leaking? yes? We also assume that the breathers are working fine (as you cleaned them remember), plus its not pressurising the crankcase and peeing oil everywhere - so they MUST be working fine...


NOW, lets say you take your car on a really hard run... flat out up steep hills etc, lots of hard breaking on bends etc... and you get back, and OH DEAR, theres oil everywhere from the rocker gaskets. So we know that either A) the gaskets didnt seal properly, or B) its pressurising again. But hang on, it cant be the gaskets as they are new, and it didnt leak when you went to Tesco, and it cant be the breathers as they are clean... or can it?...

So what do we know about the ventilation system...
All engines will pressurise the crankcase - hence the need for it to be vented (into the intake system these days)
All engines create pressure because of blow-by. Which as the engine wears, increases...
The harder and faster the engine works, the bigger the bang, and there's more of them! hence the greater the blow-by....
The breather system uses tiny pipes + holes, which limit the amount of crankcase ventilation into the intake.

So, could... and this is only a 'COULD' it be that if you add up all of the above... you exceed the amount which the standard breather system 'USED' to cope with when it was a new engine?

Just my thoughts...  8)

6
I went in to get these while they were on offer at 39.99... I also went in for some screwdrivers. Turns out there was another deal on if I bought both.

So in the end, they were only about £36ish! Bonus!

That said, even at £50, they are still a good set. You will prob get a couple of quid off with the trade card too.

7
Omega Electrical and Audio Help / Re: Total closure module...
« on: 17 January 2014, 23:04:13 »
You can also do the same with the key in the door lock... just turn it to lock and hold it there.

8
Car Parts, bits For Sale & Wanted / Wanted: 2.5TD Diesel Flywheel
« on: 17 January 2014, 22:58:24 »
Hi Guys,
 
I'm currently after two manual flywheels for the 2.5TD engine. If you know of any going cheapish, please let me know. Surface condition isn't important, neither is the clutch (tbh, I don't really need the clutch/pressure plate at all) - providing the dual mass part is fine.
 
To cut a long story short, they will be going in my boat (unless my funds run out first that is!) hence the need for two!
 
Let me know what you've got. Even if its just one!
 
Cheers

Ian

9
Omega General Help / Re: x25dt will not rev past 1,500rpm??
« on: 17 January 2014, 22:55:47 »
Could it be the potentiometer for the throttle pedal? Do you have access to live data?

10
Omega General Help / Re: Engine weight
« on: 17 January 2014, 22:51:20 »
I would say 170kg ish sounds about right.

11
General Car Chat / Re: Lane hoggers
« on: 23 February 2013, 13:16:19 »
Bugs me everyday on the way to/from work!  >:(

Other week there was a Punto with a woman in the outside lane doing 60mph! Nothing in lane 1 for about 3/4 mile ahead...

Well after what seemed like ages following her, I decided to undertake the idiot... Looked in my mirror and at least 8 cars behind followed me!

And after all that, Yep, you've guessed it, she was still sat in the outside lane! GGRRRrrrr!


12
General Discussion Area / Re: Veggie Oil run cars
« on: 01 January 2013, 00:32:49 »
What does black derv burn like? Just seem to imagine it would make a right mess, and burn leaving horrid deposits behind caking everything in ash?

13
General Discussion Area / Re: happy new year
« on: 01 January 2013, 00:17:07 »
Happy New Year to all!  :y Hope you all have a good one!

I will try and sign into OOF a bit more this year too!  :-X

14
General Car Chat / Re: Life after Omega
« on: 28 August 2012, 03:41:44 »
Oh and my replacement 'Omega' is an E39 540i Auto. Love it too... bit heavy on petrol though  :(

Think im going to end up breaking my Omega (currenly sorned) - just cant bring myself to killing my 4.5years pride and joy  :'( :'( :'( Pitty really as theres not really anything major wrong with it, just because its worth so little its not worth the hassle/time.  :(

15
General Car Chat / Re: Life after Omega
« on: 28 August 2012, 03:35:40 »
If the 4th gear in the omega is an overdrive, why couldn't they enable it in gears 1-3? Wouldn't it make it a 6 speed box then?

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