Engine cooling for bp turbo

ElvenMishi · 30-04-2013, 01:59 PM

Guys,

This is what ive done so far to cool lower my engine temperature:

1. Upgrade to two tube aluminum radiator with coolant
2. Upgrade fans
3. Thermal wraps on exhaust pipes
4. Hood scoops

It doesn't seem to be enough when i do hill climbs and still puts my temparature guage at 75%.

Two questions: is this normal? Secondly, what else can i do to lower engine temp significantly?

Mad Mat · 30-04-2013, 02:20 PM

have u changed ur rad cap???

derb · 30-04-2013, 02:37 PM

Rad cap and thermostat are easy checks and replacements, it could be the fins on the water pump have corroded down too.

ElvenMishi · 30-04-2013, 02:42 PM

Thanks, Derb.

Rad cap is new. Water pump is new and stock to bp.

Rupewrecht · 30-04-2013, 04:22 PM

Thermostat then, i'd think. Radiator hoses?

DVS · 30-04-2013, 04:39 PM

check if your gauge and temp sensor are correctly reading/working also

ElvenMishi · 30-04-2013, 05:01 PM

Hi Rup, thanks for chiming in.

Hoses are new. Thermostat has been removed to set the coolant flowing all the time.

ElvenMishi · 30-04-2013, 05:04 PM

Quote:

Originally Posted by DVS

check if your gauge and temp sensor are correctly reading/working also

It looks like gauges are spot on. If i'm driving normally (shifting at 2k rpm), temp is only 20% with 2 rad fans and aux fan set to be on all the time.

DVS · 30-04-2013, 05:16 PM

Make sure you also check the flow rate of the water moving around as any restrictions/blockages could be causing heat issues... also if ambient temp is high then things will be running alot hotter and especially if your running a monster turbo/engine package that generates alot of heat.

project.r.racing · 30-04-2013, 05:20 PM

Put the thermo stat back in.

ElvenMishi · 30-04-2013, 05:25 PM

Quote:

Originally Posted by DVS

Make sure you also check the flow rate of the water moving around as any restrictions/blockages could be causing heat issues... also if ambient temp is high then things will be running alot hotter and especially if your running a monster turbo/engine package that generates alot of heat.

We do our touge sessions at dawn so its still relatively cold.

Im not sure if the stock bp water pump can handle the huge two tube radiator but is there a way to upgrade it? Improve flow rate?

ElvenMishi · 30-04-2013, 05:27 PM

Quote:

Originally Posted by project.r.racing

Put the thermo stat back in.

If i put the thermo back in, coolant wont be flowing all the time. Will it? If so, will it make the temp hotter?

project.r.racing · 30-04-2013, 05:32 PM

At high rpm the water may be going through the radiator too quick to cool properly. Easy to check if cold pipe is hot or not after touge run.

Water pump should be fine if it is in working order.

ElvenMishi · 30-04-2013, 05:41 PM

Very interesting. Its worth a try then. Thanks

Would this be the same reason why my temp goes up to 75% on the gauge if i turn my ac to full? (Shifting at 2k rpm)

DVS · 30-04-2013, 05:58 PM

the condenser would be rejecting heat from hot refrigerent inside which sits in front of your rad so could be

project.r.racing · 30-04-2013, 06:57 PM

Do you have a pick of you setup?

ElvenMishi · 01-05-2013, 08:50 AM

I plan to stay at a 200whp for a year or two and upgrade internals to boost upto 300 whp. This is why i need to solve for the temperature issue first.

project.r.racing · 01-05-2013, 09:14 AM

You only got 200whp? For some reason I was thinking you have a big turbo big hp engine. I've seen stock BPTs and VJ20s push those figures out. And don't have any cooling issues what so ever. Now I'm curious as to your issue. 200whp doesn't require any extra cooling mods from stock parts. So you've got a problem there somewhere.

Must be time to hook up a aftermarket temp gauge and really do some digging for answers.

ElvenMishi · 01-05-2013, 09:50 AM

Quote:

Originally Posted by project.r.racing

You only got 200whp? For some reason I was thinking you have a big turbo big hp engine. I've seen stock BPTs and VJ20s push those figures out. And don't have any cooling issues what so ever. Now I'm curious as to your issue. 200whp doesn't require any extra cooling mods from stock parts. So you've got a problem there somewhere.

Must be time to hook up a aftermarket temp gauge and really do some digging for answers.

Thanks for seeing my problem thru. I can't boost up or advance any further because of the heat. Its like a chicken and egg scenario.

Thanks for the assurance. Bottom line, thermo stat and aftermarket gauge is something to look into.

Outside of these, is there anything else that i should look into?

project.r.racing · 01-05-2013, 12:06 PM

Water pump and blockages as previously stated. Something is reallt amiss. You have a full size radiator? Are you able to post up a pick of you cooling system setup?

30-04-2013, 01:59 PM	#1
ElvenMishi Junior Member Join Date: Oct 2011 Location: Cebu City Car: Astina Posts: 45	Engine cooling for bp turbo Guys, This is what ive done so far to cool lower my engine temperature: 1. Upgrade to two tube aluminum radiator with coolant 2. Upgrade fans 3. Thermal wraps on exhaust pipes 4. Hood scoops It doesn't seem to be enough when i do hill climbs and still puts my temparature guage at 75%. Two questions: is this normal? Secondly, what else can i do to lower engine temp significantly? Last edited by ElvenMishi; 30-04-2013 at 06:20 PM.

30-04-2013, 02:20 PM	#2
Mad Mat HONEYWELL REPRESENT Join Date: Aug 2005 Location: Salisbury - Inner City Car: 1997 BA Hardtop - Had a 2003 BJii J48 Sport20, and 2x bg SOHC astina hatches Posts: 5,011 View Photos By: Mad Mat	have u changed ur rad cap??? __________________ PROJECT "Catalina" 1994 323 BG Hatch 2005-2007 Crashed into truck 1991 323 BG Hatch 2007-2008/9 SOLD 2003 BJ SP20 J48 Hatch 2008-2011 Regretfully SOLD 1997 BA I4 Sedan 2012-CURRENT 1985 BF 323 Hatch 2014-2015SOLD 1989 MX5 2015-2015

30-04-2013, 02:37 PM	#3
derb Senior Member Join Date: Oct 2008 Location: Brisbane Car: 1993 BG Astina GT-X Posts: 1,822 View Photos By: derb	Rad cap and thermostat are easy checks and replacements, it could be the fins on the water pump have corroded down too. __________________ 1993 BG Astina 'GT-X'

30-04-2013, 04:22 PM	#5
Rupewrecht Administrator Join Date: Mar 2002 Location: melb.vic.au Car: AZ-1, Astina Hardtop Turbo, BJ Protege, Beetle Posts: 16,525 View Photos By: Rupewrecht	Thermostat then, i'd think. Radiator hoses? __________________ jdmparts.rupewrecht.com Sourcing your not-quite-overnight parts from Japan WRECHT--\|--SLOWTEGE--\|--BEETLE--\|--SUBSTITUTE--\|--AZ-1

30-04-2013, 04:39 PM	#6
DVS AstinaGT Regular Join Date: Jun 2007 Location: Sydney Car: BJII sp20 Posts: 488 View Photos By: DVS	check if your gauge and temp sensor are correctly reading/working also __________________ 2002 Mazda Astina 323 SP20

30-04-2013, 02:42 PM	#4
ElvenMishi Junior Member Join Date: Oct 2011 Location: Cebu City Car: Astina Posts: 45	Thanks, Derb. Rad cap is new. Water pump is new and stock to bp.

30-04-2013, 05:01 PM	#7
ElvenMishi Junior Member Join Date: Oct 2011 Location: Cebu City Car: Astina Posts: 45	Hi Rup, thanks for chiming in. Hoses are new. Thermostat has been removed to set the coolant flowing all the time.

30-04-2013, 05:16 PM	#9
DVS AstinaGT Regular Join Date: Jun 2007 Location: Sydney Car: BJII sp20 Posts: 488 View Photos By: DVS	Make sure you also check the flow rate of the water moving around as any restrictions/blockages could be causing heat issues... also if ambient temp is high then things will be running alot hotter and especially if your running a monster turbo/engine package that generates alot of heat. __________________ 2002 Mazda Astina 323 SP20

30-04-2013, 05:20 PM	#10
project.r.racing Senior Member Join Date: Sep 2004 Location: n/a Car: n/a Posts: 10,929	Put the thermo stat back in.

30-04-2013, 05:32 PM	#13
project.r.racing Senior Member Join Date: Sep 2004 Location: n/a Car: n/a Posts: 10,929	At high rpm the water may be going through the radiator too quick to cool properly. Easy to check if cold pipe is hot or not after touge run. Water pump should be fine if it is in working order.

30-04-2013, 05:41 PM	#14
ElvenMishi Junior Member Join Date: Oct 2011 Location: Cebu City Car: Astina Posts: 45	Very interesting. Its worth a try then. Thanks Would this be the same reason why my temp goes up to 75% on the gauge if i turn my ac to full? (Shifting at 2k rpm) Last edited by ElvenMishi; 30-04-2013 at 05:42 PM. Reason: Added notes

30-04-2013, 05:58 PM	#15
DVS AstinaGT Regular Join Date: Jun 2007 Location: Sydney Car: BJII sp20 Posts: 488 View Photos By: DVS	the condenser would be rejecting heat from hot refrigerent inside which sits in front of your rad so could be __________________ 2002 Mazda Astina 323 SP20

30-04-2013, 06:57 PM	#16
project.r.racing Senior Member Join Date: Sep 2004 Location: n/a Car: n/a Posts: 10,929	Do you have a pick of you setup?

01-05-2013, 08:50 AM	#17
ElvenMishi Junior Member Join Date: Oct 2011 Location: Cebu City Car: Astina Posts: 45	I plan to stay at a 200whp for a year or two and upgrade internals to boost upto 300 whp. This is why i need to solve for the temperature issue first.

01-05-2013, 09:14 AM	#18
project.r.racing Senior Member Join Date: Sep 2004 Location: n/a Car: n/a Posts: 10,929	You only got 200whp? For some reason I was thinking you have a big turbo big hp engine. I've seen stock BPTs and VJ20s push those figures out. And don't have any cooling issues what so ever. Now I'm curious as to your issue. 200whp doesn't require any extra cooling mods from stock parts. So you've got a problem there somewhere. Must be time to hook up a aftermarket temp gauge and really do some digging for answers.

01-05-2013, 12:06 PM	#20
project.r.racing Senior Member Join Date: Sep 2004 Location: n/a Car: n/a Posts: 10,929	Water pump and blockages as previously stated. Something is reallt amiss. You have a full size radiator? Are you able to post up a pick of you cooling system setup?

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