HOW TO DO AN ADVANCED SEARCH.
Mon Jul 08, 2013 3:56 pm by Admin
For the benefit of 944Hybrids users there are two search functions available for you to use.
The purpose of this sticky is to explain the "Advanced Search" function because it is much more powerful and is the best choice when researching information.
When you log on to the site a list of options is shown in a line at the top of the page. One option is labelled "Search", use this option (NOT the search box lower down on the right).
After you click on the upper search option, a drop down box appears. At the bottom of this box is a radio button marked "Advanced …
Comments: 0
Similar topics
Latest topics
Log in
Controlling the water temps on the track
+16
mr965
87-944S
Diyman25
marc a
968LS3RS
kevin924kevin
zeusrotty
Lemming
tooms351
rooster
acorad
948
skywalker01
Rich L.
fliermike45
docwyte
20 posters
944Hybrids: 924/944/968 and 928 V8 Conversions :: Technical Stuff (other than motors) :: Tracking Your Car
Page 5 of 6
Page 5 of 6 • 1, 2, 3, 4, 5, 6
Re: Controlling the water temps on the track
Where'd the content go on some of our posts?
docwyte- Posts : 1393
Join date : 2010-07-18
Re: Controlling the water temps on the track
Well, I looked around and the carbon fiber ones weren't a whole lot more, so I bought them, along with the hood scoop.
Hopefully this helps, I'd love coolant temps to not exceed 210F...
http://roadracemotorsports.com/store/index.php?main_page=product_info&cPath=81&products_id=2113
http://roadracemotorsports.com/store/index.php?main_page=product_info&cPath=81&products_id=852
Just got home and was able to measure the hood to make sure these would fit. I was freaking out a little about that and am happy to report there's plenty of space for them...
Hopefully this helps, I'd love coolant temps to not exceed 210F...
http://roadracemotorsports.com/store/index.php?main_page=product_info&cPath=81&products_id=2113
http://roadracemotorsports.com/store/index.php?main_page=product_info&cPath=81&products_id=852
Just got home and was able to measure the hood to make sure these would fit. I was freaking out a little about that and am happy to report there's plenty of space for them...
docwyte- Posts : 1393
Join date : 2010-07-18
Re: Controlling the water temps on the track
Doc did you get my email on the vent?
zeusrotty- Posts : 444
Join date : 2010-07-30
Re: Controlling the water temps on the track
Rich L. wrote:Steel ones that I used.
http://www.928motorsports.com/parts/louvers.php
Rich, are these 26 gauge louvers about the same thickness as the hood skin or are they thinner?
racertomtom- Posts : 144
Join date : 2014-07-04
Age : 64
Location : Southern Illinois
Re: Controlling the water temps on the track
Eric,
I did and I was about to buy the vent when I noticed where it would ship from. I need these no later than this coming Wednesday and that didn't look possible. So I decided to get the matching hood vent from Road//Race.
I'm really hoping I see a 20-30 degree drop in water temps from these...
I did and I was about to buy the vent when I noticed where it would ship from. I need these no later than this coming Wednesday and that didn't look possible. So I decided to get the matching hood vent from Road//Race.
I'm really hoping I see a 20-30 degree drop in water temps from these...
docwyte- Posts : 1393
Join date : 2010-07-18
Re: Controlling the water temps on the track
docwyte wrote:
I'm really hoping I see a 20-30 degree drop in water temps from these...
Doc, are you running an under tray as well? If not, you need to.
Lemming- Posts : 855
Join date : 2011-05-30
Location : B'ham
Re: Controlling the water temps on the track
Yep, I have my front splitter, than an aluminum piece that starts before the splitter stops and extends back.
docwyte- Posts : 1393
Join date : 2010-07-18
Re: Controlling the water temps on the track
This is an interesting 3 part article on differential pressures, which creates cooling flow using undertrays, spoilers, and vents.
http://www.autospeed.com/cms/article.html?&A=2159
http://www.autospeed.com/cms/article.html?&title=Undertrays-Spoiler-Bonnet-Vents-Part-2&A=2160
http://www.autospeed.com/cms/article.html?&title=Undertrays-Spoiler-Bonnet-Vents-Part-3&A=2162
http://www.autospeed.com/cms/article.html?&A=2159
http://www.autospeed.com/cms/article.html?&title=Undertrays-Spoiler-Bonnet-Vents-Part-2&A=2160
http://www.autospeed.com/cms/article.html?&title=Undertrays-Spoiler-Bonnet-Vents-Part-3&A=2162
racertomtom- Posts : 144
Join date : 2014-07-04
Age : 64
Location : Southern Illinois
Re: Controlling the water temps on the track
Interesting articles.
docwyte- Posts : 1393
Join date : 2010-07-18
Re: Controlling the water temps on the track
Read those articles long ago. Here is the aero chart for a 924, notice that the greatest negative pressure is a the beginning of the hood and extends back to just above the middle of the wheel. This is the place to put your vents.
Note: up is negative pressure on this graphic. The pressure differentials also show why you need to run the rubber strip between the firewall and hood, it keeps high pressure from entering from the base of the windshield (think cowl induction for the entire engine bay; therefore increased engine bay pressure and less flow through you radiator).
Edit: just reread the thread and Rich posted this on page 1
Note: up is negative pressure on this graphic. The pressure differentials also show why you need to run the rubber strip between the firewall and hood, it keeps high pressure from entering from the base of the windshield (think cowl induction for the entire engine bay; therefore increased engine bay pressure and less flow through you radiator).
Edit: just reread the thread and Rich posted this on page 1
Lemming- Posts : 855
Join date : 2011-05-30
Location : B'ham
Re: Controlling the water temps on the track
Can people share the temps they're seeing and where they are being measured?
I've year to see any water temp problems with the car. Water temp is measured on the pass side head and usually hovers around 205(ish). I have a high flow water pump and an aftermarket all Al rad (forget which one it is)
I've year to see any water temp problems with the car. Water temp is measured on the pass side head and usually hovers around 205(ish). I have a high flow water pump and an aftermarket all Al rad (forget which one it is)
money pit 951- Posts : 101
Join date : 2013-01-07
Re: Controlling the water temps on the track
That's exactly where the 924 Turbo NACA duct is located(over the right side exhaust manifold). Just mirror it to the left side as well. Suck that exhaust manifold heat right outta there.docwyte wrote:Hmmm, ok, so a naca duct or reverse louvers on either side there would help...
I think I'm going to drop the car at the body shop to have them open up the front license plate area, the header panel and maybe vent the hood too...
944convert- Posts : 253
Join date : 2009-10-25
Re: Controlling the water temps on the track
money pit 951 wrote:Can people share the temps they're seeing and where they are being measured?
I measure mine on the rear of the passenger head. I'm hoping the new broad foot nose, ducting, and under tray help to keep my temperatures down. Two weeks ago at Barber, my temps never went above 210oF. Ambient temp was high 80's/low 90's and sunny.
Prior to that the car typically ran in the 220 range, sometimes getting to 230 in a hot race. Interestingly, my oil temps rarely exceed 220, measured in the pan.
I'm also running a high flow water pump with a two row griffin radiator.
Lemming- Posts : 855
Join date : 2011-05-30
Location : B'ham
Re: Controlling the water temps on the track
Turns out my Autometer water temp gauge reads 10F high. I'm also measuring from the passenger side head.
So at it's peak, temps were around 240F. Earlier this summer I saw 230F. On the street I rarely see over 180F. I'm hoping the hood vents and reverse scoop create enough negative pressure to draw more air through the radiator as well as vent the heat from the headers to keep water temps to no more than 210-220F.
Oil temps could be as high as 270F on track, I'm hoping that the new front mounted oil cooler and vents help with that too.
Bad combo of ambient temps of close to triple digits (track temps of 120+) and high altitude here...
So at it's peak, temps were around 240F. Earlier this summer I saw 230F. On the street I rarely see over 180F. I'm hoping the hood vents and reverse scoop create enough negative pressure to draw more air through the radiator as well as vent the heat from the headers to keep water temps to no more than 210-220F.
Oil temps could be as high as 270F on track, I'm hoping that the new front mounted oil cooler and vents help with that too.
Bad combo of ambient temps of close to triple digits (track temps of 120+) and high altitude here...
docwyte- Posts : 1393
Join date : 2010-07-18
Re: Controlling the water temps on the track
My setup is a Wizard radiator with stock fans, opened up 944 n/a bumper and vents in the front part of the hood. Temps measured at the back of the passenger head using the factory gauge in the dash. I see 220-230 F water temps when I run in the Oregon desert at 100 F ambient and 2500' of elevation. But running up here in Seattle close to sea level and 80 F ambient the water runs at 160-170 F which is the thermostat opening temp.
My oil temps push 250 with an RX7 oil cooler in place of the intercooler behind a vented nose panel. This is measured in the thermostat before the cooler.
Rich
My oil temps push 250 with an RX7 oil cooler in place of the intercooler behind a vented nose panel. This is measured in the thermostat before the cooler.
Rich
Rich L.- Posts : 928
Join date : 2011-05-30
Location : Seattle
Re: Controlling the water temps on the track
Now add another 3500' of elevation Rich and you'll experience what I am...
My setup is a RH/RD radiator, holes cut in the OEM turbo front bumper, dual 11" Spal fans, SLP 160 degree thermostat and an Evans water pump, with front splitter and undertray.
About to add the reverse hood scoop and louvers.
My setup is a RH/RD radiator, holes cut in the OEM turbo front bumper, dual 11" Spal fans, SLP 160 degree thermostat and an Evans water pump, with front splitter and undertray.
About to add the reverse hood scoop and louvers.
docwyte- Posts : 1393
Join date : 2010-07-18
Re: Controlling the water temps on the track
You may want to switch to a circle track radiator like mine if all of this doesn't work.
zeusrotty- Posts : 444
Join date : 2010-07-30
Re: Controlling the water temps on the track
zeusrotty wrote:You may want to switch to a circle track radiator like mine if all of this doesn't work.
Got any pics, specs or model number of the radiator you're running? Is circle track the brand?
How was install and fitment?
phlip- Posts : 67
Join date : 2012-08-11
Location : Dallas
Re: Controlling the water temps on the track
I'm not sure I can fit any larger of a radiator than what I have now. Street temps, if anything, are too cold, it's sitting around 170-180F on the street.
docwyte- Posts : 1393
Join date : 2010-07-18
Re: Controlling the water temps on the track
docwyte wrote:I'm not sure I can fit any larger of a radiator than what I have now. Street temps, if anything, are too cold, it's sitting around 170-180F on the street.
That just sounds low - esp if 170 gauge was really 160 since you said it was reading 10F high. What thermostat are you running?
I wouldn't want 170 at the head - I would think carbon buildup and incomplete burns would be an issue
money pit 951- Posts : 101
Join date : 2013-01-07
Re: Controlling the water temps on the track
SLP 160 tstat. It is what it is. I'm more concerned about what the track temps are.
docwyte- Posts : 1393
Join date : 2010-07-18
Re: Controlling the water temps on the track
But you're running a thermostat, right?docwyte wrote:SLP 160 tstat. It is what it is. I'm more concerned about what the track temps are.
money pit 951- Posts : 101
Join date : 2013-01-07
Re: Controlling the water temps on the track
Yes. An SLP 160 tstat.
docwyte- Posts : 1393
Join date : 2010-07-18
Re: Controlling the water temps on the track
Doc, I found that the LT1 SLP low temp stat had a smaller open cross sectional area than the standard temp unit; ~15% less.....Both were Wahler brand, IIRCdocwyte wrote:Yes. An SLP 160 tstat.
Though I doubt something like this would solve all your problems, it couldn't hurt to ensure you have the most flow possible....in general, more flow means more cooling.
948- Moderator
- Posts : 573
Join date : 2009-06-09
Age : 108
Location : East PA
Re: Controlling the water temps on the track
i am running this radiator.
http://www.summitracing.com/parts/gri-1-85201-h
Mounting was done with aluminum brackets. Super easy and you could DIY. The car is in now getting new heads and a new cam and tune so i cant really take pics. I am also running dual 10" spal fans at 2200 cfm a piece. i did have to have a bug hole put in the lower left of the rad for the stock Porsche temp sensor. It works really well.
http://www.summitracing.com/parts/gri-1-85201-h
Mounting was done with aluminum brackets. Super easy and you could DIY. The car is in now getting new heads and a new cam and tune so i cant really take pics. I am also running dual 10" spal fans at 2200 cfm a piece. i did have to have a bug hole put in the lower left of the rad for the stock Porsche temp sensor. It works really well.
zeusrotty- Posts : 444
Join date : 2010-07-30
Page 5 of 6 • 1, 2, 3, 4, 5, 6
944Hybrids: 924/944/968 and 928 V8 Conversions :: Technical Stuff (other than motors) :: Tracking Your Car
Page 5 of 6
Permissions in this forum:
You cannot reply to topics in this forum
Today at 11:30 am by Gutterboy
» Honda k24 swap
Yesterday at 6:12 am by Colibri Green
» power steering pump
Tue Mar 26, 2024 3:29 pm by Blaizefed
» FRESH BUILD - after a few miles became hard to get into gear
Tue Mar 26, 2024 1:30 pm by Raymond-P
» VATS Bypass/Delete
Tue Mar 26, 2024 8:49 am by 948
» Ray's 1987 944 LS1 Build & Swap
Wed Mar 20, 2024 11:52 pm by Raymond-P
» Purpose of the speed sensor with a stock ECU
Wed Mar 20, 2024 1:17 pm by Rob44
» FS: Porsche 928 968 944 S2 951 Turbo FRONT BREMBO CALIPERS
Tue Mar 12, 2024 3:22 pm by dcoutofstep
» 944 S2/Turbo J LTD Edition Front Lip Spoiler - Brand New never fitted
Tue Mar 12, 2024 2:10 pm by dcoutofstep
» Adding Purge Solenoid Wiring to Standalone Harness
Tue Mar 12, 2024 12:12 pm by ndog52