What was the official mazda answer too...

Sy. · June 25, 2005, 12:09:38 AM

i normaly let the engine run for about 2/3 minutes (enough to smoke a fag) and then turn it off ! ...
if i go for a blast ... drive for a few miles normaly ... and then do the same as above ..
i want to get a turbo timer fitted to i can have it running while i run inthe shop .. .

chris p · June 25, 2005, 12:32:58 AM

thing is though mate in those few minutes you are lettin the turbos cool ...your coolant is getting warmer ...very quickly!! and once the pump and engine have stopped what happens........ :confused:

Sy. · June 25, 2005, 01:53:41 AM

ummm good point ... but temp never seems to rise when it is stationary .

chris p · June 25, 2005, 08:49:35 AM

which gauge you have though ...the standard factor one ?? if so get an apexi &commander and you will be unpleasantly surprised !!

Oedipus Rex · June 25, 2005, 10:00:59 AM

I open my bonnet after a drive, just to let some heat out.

Don;t see how that could make it hotter.

Initial-D · June 25, 2005, 10:58:43 AM

I normally drive sensibly for the last few miles (below 3k) so the turbos aren\'t oiled up then turn off the engine, after that i\'ll turn the key to position II and wait until the cooling fans switch off. The car always runs at 89C and the PFC is set to let the fans come on at 84C I believe. Trouble is cooling the big old turbo! Thats damn hot when I park up!! Maybe I should spray a mist of water onto it and the FMIC??

chris p · June 25, 2005, 10:45:28 PM

can you adjust when the fans come on via the pfc ?? cos mine kicks in/ out however you look at it at 94 degrees !

Oedipus Rex · June 25, 2005, 10:47:28 PM

you can adjust on the commander indeed.

chris p · June 25, 2005, 10:49:58 PM

ahh this sounds a lot better ...pity there wasnt a hard wired fan switch already in place whihc 90%of cars have :xconfused

Grizzly · June 25, 2005, 11:25:21 PM

With having a Power Fc and handset, i found that the temp goes up more when the engine is off. So what i do if i have been on a good run i tend to drive it slowly (off boost etc) for the last 2-3 miles. Then when i get in idle for 10 seconds turn it off for ten seconds (with Aircon fans on) then start it again for 10 seconds and then turn it off and get a brew.

I found this soaks up the heat into the staitionary water then starting it again drops the temp by pulling the cooler water through from the Rad.

Anyone with a PFC try it and have a look at you temps.

If i do the 30 second idle thing i found it still gets realy hot when you keep an eye on the PFC with the engine off and the Ing still on.

The Bonnet up thing is a Mith i think as it makes very little diffrence too engine core temps.

Chris

Oedipus Rex · June 26, 2005, 07:46:09 AM

Quote from: GrizzlyWith having a Power Fc and handset, i found that the temp goes up more when the engine is off. So what i do if i have been on a good run i tend to drive it slowly (off boost etc) for the last 2-3 miles. Then when i get in idle for 10 seconds turn it off for ten seconds (with Aircon fans on) then start it again for 10 seconds and then turn it off and get a brew.

I found this soaks up the heat into the staitionary water then starting it again drops the temp by pulling the cooler water through from the Rad.

Anyone with a PFC try it and have a look at you temps.

If i do the 30 second idle thing i found it still gets realy hot when you keep an eye on the PFC with the engine off and the Ing still on.

The Bonnet up thing is a Mith i think as it makes very little diffrence too engine core temps.

Chris

I gotta disagree with you there. If you have a stock bonnet, all that heat from the turbos and block is being released into the bay and just sitting there. Heating the bay up If the heat has nowhere to escape to then its gonna take a hell of a lot longer for the whole thing to cool down. For the water and air temps to go down then the ambient temp of the engine bay has to go down too, the more of the heat vented to the atmosphere the less is being stored in your engine bay.

chris p · June 26, 2005, 09:57:21 AM

does anyone have an english rx7 manual with any info on this ??

Oedipus Rex · June 26, 2005, 10:00:53 AM

have you checked //www.iluvmyrx7.xom

they have most manuals

Grizzly · June 26, 2005, 12:27:26 PM

Quote from: Oedipus RexI gotta disagree with you there. If you have a stock bonnet, all that heat from the turbos and block is being released into the bay and just sitting there. Heating the bay up If the heat has nowhere to escape to then its gonna take a hell of a lot longer for the whole thing to cool down. For the water and air temps to go down then the ambient temp of the engine bay has to go down too, the more of the heat vented to the atmosphere the less is being stored in your engine bay.

The Idea is not to have your Turb\'s as hot. If you hammered it for 100miles then got in then i understand your point it would be VERY hot. Or if for example you car is running a Hot set up. but i have noticed if the Turbo\'s are not being Used (off boost) the heat is considerably less.

Do you have a POWER FC fitted? If so then do diffrent things untill you find it tells you the Engine stops at the coolest temp possable.

You can\'t substute cooling your car down properly but i\'ll always try to have it moving so i get lots of through air then run it at Idle for as least time as poss. as that will cause heat soke.

I do understand that Opening the bonnet will help get rid of Heat soke over say 20 mins but you must live in a better area than me. I dont leave anything open with out my presence.

Chris

Oedipus Rex · June 26, 2005, 01:13:49 PM

Absolutely, I stay off boost for a while before the end of my journey but its still kicking out a lot of heat by the time I get home. Until I get my Scoot bonnet fitted I find the best way to cool things down at a good pace is to pop the bonnet wide open and smoke a ciggarettte for 5 - 10 mins before closing it and putting it away.

Fair play if you don;t agree but having carefully watched both air and water temps after leaving my bonnet I\'ve come to the conclusion that it makes a good few degrees difference.