AnswerID: 164637 Submitted: Monday, Apr 03, 2006 at 21:53
Member - Roachie (SA)
replied:
I had a Boggard turbo timer on my last vehicle (GQ with Safari turbo). Nothing wrong with the timer, but I would seriously question whether it's really needed. I have not fitted one to my current Patrol, which had a Denco upgraded turbo fitted last year to replace the standard unit.
Instead of a timer, I've opted for an EGT gauge. I have 2 thermocouples fitted; one above the turbo in the exhaust manifold which I use 99% of the time....the other is in the dump pipe, just below the turbo. I would expect that your Denco system would have a ready-made plug in the dump pipe to take the thermocouple.
For the most part it is not normally necessary to allow a
cool-down period of time for your turbo. I work on the basis of 200oC in the manifold as a switch-off temp. Most of the time, by the time I pull up, the temp is down to this level anyway and i can switch off straight away. The only time I need to sit for a little while (about 30 seconds tops) is if I've come in off the highway at high speed, and have to pull up within a minute or so of dropping speed back to 60k/h.
The EGT gauge is FAR MORE useful than a timer. Also, with a timer, you are technically not allowed to leave the vehicle whilst it is still running anyway.
IMHO a timer is a waste of $$$$
Cheers
Roachie
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| There's only one thing more painful than learning from experience and that is NOT learning from experience! |
Reply 2 of 4
FollowupID: 419576 Submitted:
Tuesday, Apr 04, 2006 at 08:14
Member - Roachie (SA) posted:
Hems,
David is right....Ian is very easy to deal with. Fitting is very easy, especially if you already have the tapped hole in the dump pipe. When I first fitted mine I didn't have the new Denco upgraded turbo/dump pipe, so I had nowhere to fit the thermocouple. On Ian's advice,I got a hole drilled and tapped into the manifold, just before it joins the turbo. This gives a more "accurate" reading of what gas temps are hitting the turbo, which is, after all, what you need to know. The temp readings in the dump pipe can be up to 140oC lower than the manifold. It was a real eye opener to me.......I'd always thought a turbo 'created' heat; whereas it actually absorbs/dissipates heat from the exhaust.
I quoted some figures above, for temps that I work off before switching the motor off. Please bear in mind that these temps are what I'm reading in the manifold, not what you'd be expecting in the dump pipe. If using this set-up with only the dump-pipe thermo-couple, I'd be suggesting a shut-down temp of around 180oC or thereabouts......but Ian will know more about that.
Just while on the subject of monitoring your motor, David has been very professional by not mentioning his own product in this response......... I have no interest in his company/firm, but I am a satisfied customer and I drive with a renewed sense of comfort/confidence now that I have one of his Low-Water Alarms fitted to my top radiator hose too. Thsi is another easily fitted component that I can thoroughly recommend.
Cheers
Roachie
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| There's only one thing more painful than learning from experience and that is NOT learning from experience! |
FollowUp 4 of 5
