Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: TheBoy on 06 May 2007, 16:50:18

Title: TD Cooling - from another angle
Post by: TheBoy on 06 May 2007, 16:50:18
OK, thinking about my cooling issues from another angle.

Now, these tractors aren't the most powerful machines ever made, and I do seem to have the pedal hard down except when cruising (when the temp is OK), just to make it accelerate.

Is it just because I am thrashing its nuts off all the time?

And I expecting too much from it?
Title: Re: TD Cooling - from another angle
Post by: Andy B on 06 May 2007, 17:49:12
Quote
OK, thinking about my cooling issues from another angle.

Now, these tractors aren't the most powerful machines ever made, and I do seem to have the pedal hard down except when cruising (when the temp is OK), just to make it accelerate.

Is it just because I am thrashing its nuts off all the time?

And I expecting too much from it?

My 'tractor' Astra must be more asthmatic than your Omega .. and the temp stays constant on that - can't think now what it is, but looks right on the gauge  :-?
Title: Re: TD Cooling - from another angle
Post by: Markjay on 06 May 2007, 17:51:18
...and the very same engine managed much more power as a BMW..?
Title: Re: TD Cooling - from another angle
Post by: TheBoy on 06 May 2007, 17:55:25
Quote
...and the very same engine managed much more power as a BMW..?
I heard a rumour, Vx detuned it so as not to rip the autobox to shreds...
Title: Re: TD Cooling - from another angle
Post by: tunnie on 06 May 2007, 18:01:11
Graham does give his tractors a good trashing.... it was hard work to keep up in the 2.2!!

However, no matter how hard its thrashed it should not pop its coolant!

Whats the flow like of the coolant now in the header tank? When at Grahams and when being reved hard, there was no movement in the tank. (see little bubbles moving down the pipes ect..)

Does it flow better now?
Title: Re: TD Cooling - from another angle
Post by: TheBoy on 06 May 2007, 18:07:18
Quote
Graham does give his tractors a good trashing.... it was hard work to keep up in the 2.2!!

However, no matter how hard its thrashed it should not pop its coolant!

Whats the flow like of the coolant now in the header tank? When at Grahams and when being reved hard, there was no movement in the tank. (see little bubbles moving down the pipes ect..)

Does it flow better now?
Yes, though I remain unconvinced that is related - the majority of the water should obviously go though rad...
Title: Re: TD Cooling - from another angle
Post by: JamesV6CDX on 07 May 2007, 05:57:54
You should be able to thrash the knackers off the 2.5TD and it shouldn't push coolant out :)

Of course, as soon as you change that HG, it will stop doing it ;D ;D ;D ;D

Actually, I'm joking, because I know it's very unlikely to be the case....

But, we're running out of ideas!
Title: Re: TD Cooling - from another angle
Post by: Martin_1962 on 07 May 2007, 09:33:55
Quote
OK, thinking about my cooling issues from another angle.

Now, these tractors aren't the most powerful machines ever made, and I do seem to have the pedal hard down except when cruising (when the temp is OK), just to make it accelerate.

Is it just because I am thrashing its nuts off all the time?

And I expecting too much from it?


No it is detuned in the Omega from over 140bhp and then went quite well in the 5 series, I still think you have a blockage.

You do however need to see Omegatoy about chipping once fixed
Title: Re: TD Cooling - from another angle
Post by: TheBoy on 07 May 2007, 09:34:05
Quote
You should be able to thrash the knackers off the 2.5TD and it shouldn't push coolant out :)

Of course, as soon as you change that HG, it will stop doing it ;D ;D ;D ;D

Actually, I'm joking, because I know it's very unlikely to be the case....

But, we're running out of ideas!
I'm wondering if there is something wrong with the engine, and its generating more heat. And with it being constantly thrashed....

Though neither of the sensors in the head ever read above 103 - 105 (remember 105 is where 2nd stage fans come on), which, imho, shouldn't be enough to push coolant out.
Title: Re: TD Cooling - from another angle
Post by: Martin_1962 on 07 May 2007, 09:35:35
Quote
Quote
...and the very same engine managed much more power as a BMW..?
I heard a rumour, Vx detuned it so as not to rip the autobox to shreds...

And BMW used a GM Autobox ::)

Probably didn't want to use the AR35
Title: Re: TD Cooling - from another angle
Post by: andyiow on 12 May 2007, 09:07:46
I did not exactly hang about in my 2.5TD the rev needle quite often is up near the 4k mark. Temperature gets to about 90-95 mark on the gauge on short trips but longer ones a bit cooler. On one trip at a curising speed of 60 I thought the gauge had broke as it only just went above the bottom of the gauge about halfway through the trip.

Recently did a long motorway trip at a high constant speed and during that trip the needle stayed at 90 for the whole trip. Can only think of maybe a blockage somewhere, any idea where the coolant temp sensor is>

Only coolant problems I have had was a pinhole in one of the rad pipes which open when driving but shut up when idling and the sensor that keeps on telling me low coolant even though it was at the correct level (this has gone away since I took the tank off and gave it a good cleaning with a mixture of coolant flush and water)
Title: Re: TD Cooling - from another angle
Post by: hotel21 on 12 May 2007, 10:47:07
As regards thrashing the nads off it....  No experience of the GM version but have certainly driven several of the BMW 2.5 TD's as hard as a hard thing at times and for extended periods and the temp never moved a jot on the guage from normal.  And it warmed up very quickly from stone cold to normal op temp....   :-?
Title: Re: TD Cooling - from another angle
Post by: platty on 12 May 2007, 15:38:57
I drive my TD with foot to the floor when accelerating and generally cruise on the M'way at 80 ish. Usually sits at 90-92 on the gauge (if its true).

The only time it creeps up is if i really hold it in the gears or cruise on the M'way at 100 then it pops its head over 95 but that doesnt happen very often.

As you mentioned earlier, you could have another problem and thrashing the motor is perhaps just compounding it.
Title: Re: TD Cooling - from another angle
Post by: tunnie on 12 May 2007, 15:50:12
The Senator gets very warm, very quick. Could it be an S6 thing?

Took it out today, first time in 2 weeks. Within less than a min it was at 80.... 4 mins and it was at normal temp!  :o

I take it there is no coolant loss under general driving? (ie no thrashing!)
Title: Re: TD Cooling - from another angle
Post by: TheBoy on 12 May 2007, 21:04:26
Quote
(ie no thrashing!)
Sorry, I cannot understand that concept ::)


Seriously, no coolant loss if I keep the temp down...