[Mk2] [Turbo] Lowering Inlet Temps

Moo

I'm running a ST205 CC and seeing inlet temps in the mid 30's when cruising raising to mid/high 40's when giving it some which I think this is a little high so I want to try and gets the temps down a bit.

My CC setup is using a cinq rad so I got hold of a GT4 rad to go on there which I'm hoping will help a little. I'm not sure what type of pump is on there (it came with the setup and doesn't have any marking on it) so will also be changing it for something better.

Anyone have any recommendations for a decent pump I could use? I was also thinking of using 2 pumps, would this be worth it or is just one pump sufficient?

Marf · Posted: Fri Sep 18, 2009 7:37 pm Post subject:

Those are pretty low temps man, what outside temp was it when you saw these temps?

Martin F · Posted: Sat Sep 19, 2009 12:16 am Post subject:

I fitted two 7" puller fans to the radiator and put them through a manual switch, i also removed the air con radiator, when the fans are running my hand almost sticks to the rad, not much more you could do really [Think]

Remember that the reading is probably know where near real time as the MAT sensor is very slow to respond plus many other things contribute to it giving anything but a true reading.

do you have engine spal fans fitted as they will also make a difference to your readings, Just now my Mat reading is around 28-34 for intake but i expect that will not just go down soon but totally inaccurate as that is the driving reading and if i check the MAX reading on the power fc it isn't above that, even on a first to fourth pull.

V8Killer · Posted: Sat Sep 19, 2009 2:15 pm Post subject:

Bosch do a good pump for chargecooler pumps. I use 2 on my setup, but then i have a pretty large chargecooler!

See here for more details:

http://www.advancedvehicletuning.co.uk/catalog2/index.php?cPath=31
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Steve-O 2007 · Posted: Sun Sep 20, 2009 8:51 pm Post subject:

Have fun trying to fit the GT4 Rad [Mr. Green]

If its much bigger than the Fiat Rad than I wouldnt bother attempting to fit it

What about a Water Injection kit?

Oh and isnt the ST205 pump suposed to be one of the best?

Moo · Posted: Mon Sep 21, 2009 6:03 am Post subject:

IIRC the outside temp was mid/high 20's when I saw those intake temps. It was during the day a few weeks ago when we had that hot spell. I don't have standalone management so was never able to monitor intake temps until recently fitting a sensor to the intake manifold.

I've seen a few posts suggesting that anything into the 40's with a CC is high, from what I've read low/mid 30's is what I should be seeing?

I don't run any fans on the CC rad but that's a good option. I use my aircon and want to keep on doing so but as I have a Veilside bumper there might be enough room to fit the GT4 rad with some puller fans and keep the air con.

I have no idea what pump is on mine, no idea of flow rates or age etc so am going to change it as a matter of course. That Bosch pump looks pretty good, cheers for the link [thumleft]

I've seen them mentioned on here a few times. Would 2 of the Bosch pumps (1 in 1 out) be better than 1 or would that be overkill?

Marf · Posted: Mon Sep 21, 2009 7:14 am Post subject:

15-20 degrees above ambient is fine, nothing to worry about [thumleft]

No harm in trying to lower them though, but your certainly not in any danger of damaging anything with temps like that [Smile]

Dale_V · Posted: Mon Sep 21, 2009 7:27 am Post subject:

what sensor are you using?

also where is the sensor mounted, inlet manifold or throttle body?
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Moo · Posted: Mon Sep 21, 2009 11:27 am Post subject:

I'm using an lcd digital display meant for monitoring temperatures inside of PC cases. The probe is in mounted in the inlet manifold using the blanked off pipe on the bottom of the inlet manifold.

Oh, and I've already heard all the jokes about back to the future and Darth Vader's bathroom before anyone else starts getting clever [Applause]

Dale_V · Posted: Mon Sep 21, 2009 11:35 am Post subject:

very nice, ive just bought the same displays (2) and im installing them today... 1 for the CC coolant and one for the intake temp...

Moo · Posted: Mon Sep 21, 2009 11:44 am Post subject:

Cheers

What displays did you go for? I ask because I had loads of problems with the gauges constantly tripping out due to electrical noise picked up by the sensor and it took me a long time to find some gauges that worked.

Where abouts are you mounting the displays?

Are you planning on going up that blanked off pipe for the inlet temp?

Dale_V · Posted: Mon Sep 21, 2009 12:21 pm Post subject:

Moo · Posted: Mon Sep 21, 2009 1:05 pm Post subject:

Cool

Let me know if you have trouble with the displays tripping out.

Dale_V · Posted: Mon Sep 21, 2009 1:13 pm Post subject:

Moo · Posted: Mon Sep 21, 2009 4:28 pm Post subject:

TBH I don't think wrapping the wires will make any difference. I've seen posts on here from somebody that had troubles with his displays tripping out and he went to extreme lengths wrapping all the wires with some kind of heavy duty shielding he got from his work and that didn't make the slightest difference. At the end of the day you may wrap the wires but the tip of the temp sensor itself is the weak point and I think this is where the "noise" gets in. There's no harm in wrapping the wires but I'd be surprised if it helps. If your displays trip you're stuffed but I can point you to the ones that don't [Wink]

http://www.quietpc.com/gb-en-gbp/products/caseaccessories/kama-thermo

The mini display are the ones you see in my picture but i've also tried the larger ones mounted in the ashtray and they were fine as well [thumleft]

Steve-O 2007 · Posted: Mon Sep 21, 2009 5:34 pm Post subject:

Dale_V · Posted: Mon Sep 21, 2009 6:24 pm Post subject:

moo, which 12v > 5v reducer did you use?

Ren0W · Posted: Mon Sep 21, 2009 8:04 pm Post subject:

Can someone tell me, or PM me, the steps to take to complete such a lcd-temp-monitoring device.

What products are needed, and how/where to route them?

allan welsh · Posted: Mon Sep 21, 2009 9:36 pm Post subject:

black gts · Posted: Tue Sep 22, 2009 8:32 am Post subject:

i thought i was getting 25c with my cc until i learnt that i had to ADD ambient temp. to it [Sad]

my sensor is in the inlet manifold so i dont know if im getting heat soak or my pumps are not up to the job. on a hot day full pull 59c is the highest its been. i would like to check other peoples temps. i have my own spare sensor and it would take 2 mins. even an intercooler so i have a compare with.i would come to u to do this , within reason [Smile]