Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Go Back   Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum > General > Tech Talk > Engine Tech

Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series.


Reply
 
Thread Tools Display Modes
Old 02-01-2013, 05:51 PM   #1
TougeSR20Kid
Zilvia Junkie
 
TougeSR20Kid's Avatar
 
Join Date: Dec 2005
Location: Seattle WA
Age: 34
Posts: 452
Trader Rating: (1)
TougeSR20Kid has a little shameless behavior in the past
Feedback Score: 1 reviews
Sr20 temperature issues

So I've done all that I can think of and my cars temp is still pretty high. Ranges from 195 to 205. In the past few weeks I've swapped both sensors, run a flush on it, new 180 thermo, filled it with distilled water and two things of water wetter only. So now I'm just a little bit confused as to why the issue is persisting. Anyone got any ideas or comments or help?

Also I have a koyo with e fans, lifted hood and I live in a cold-ish place so it couldn't be a weather related phenomena
__________________
Quote:
Originally Posted by mantas View Post
One more thing - i hate your prius.
Namaste mother f**ker
TougeSR20Kid is offline   Reply With Quote
Sponsored Links
Old 02-01-2013, 05:57 PM   #2
rwtf
Zilvia Addict
 
rwtf's Avatar
 
Join Date: Jun 2011
Location: Maryville, TN
Age: 29
Posts: 830
Trader Rating: (3)
rwtf is an unknown quantity at this point
Feedback Score: 3 reviews
i got a nismo tstat for sale, opens at 60*C
__________________
rwtf is offline   Reply With Quote
Old 02-01-2013, 06:02 PM   #3
TougeSR20Kid
Zilvia Junkie
 
TougeSR20Kid's Avatar
 
Join Date: Dec 2005
Location: Seattle WA
Age: 34
Posts: 452
Trader Rating: (1)
TougeSR20Kid has a little shameless behavior in the past
Feedback Score: 1 reviews
I'll pm you, but I'm not sure if that's the problem because the one I got opens not too much hotter than that and it's still running 20 to 30 degrees hotter than the thermo opens at
__________________
Quote:
Originally Posted by mantas View Post
One more thing - i hate your prius.
Namaste mother f**ker
TougeSR20Kid is offline   Reply With Quote
Old 02-01-2013, 06:07 PM   #4
DRIFTERS14
 
DRIFTERS14's Avatar
 
Join Date: Dec 2008
Location: SFL
Posts: 41
Trader Rating: (1)
DRIFTERS14 is an unknown quantity at this point
Feedback Score: 1 reviews
put clutch fan & shroud back on
DRIFTERS14 is offline   Reply With Quote
Old 02-01-2013, 06:15 PM   #5
TougeSR20Kid
Zilvia Junkie
 
TougeSR20Kid's Avatar
 
Join Date: Dec 2005
Location: Seattle WA
Age: 34
Posts: 452
Trader Rating: (1)
TougeSR20Kid has a little shameless behavior in the past
Feedback Score: 1 reviews
Oops sorry reposted
__________________
Quote:
Originally Posted by mantas View Post
One more thing - i hate your prius.
Namaste mother f**ker
TougeSR20Kid is offline   Reply With Quote
Old 02-01-2013, 06:22 PM   #6
K_style
Post Whore!
 
K_style's Avatar
 
Join Date: Dec 2007
Location: Henderson, NV
Posts: 7,666
Trader Rating: (63)
K_style is close to perfectionK_style is close to perfectionK_style is close to perfectionK_style is close to perfectionK_style is close to perfectionK_style is close to perfectionK_style is close to perfectionK_style is close to perfectionK_style is close to perfectionK_style is close to perfectionK_style is close to perfection
Feedback Score: 63 reviews
Quote:
Originally Posted by rwtf View Post
i got a nismo tstat for sale, opens at 60*C
You are wrong. it opens at 62*C.

Quote:
Originally Posted by DRIFTERS14 View Post
put clutch fan & shroud back on
This will do it.

Maybe air in the system?
K_style is offline   Reply With Quote
Old 02-01-2013, 06:42 PM   #7
sr20s14koukikid
 
sr20s14koukikid's Avatar
 
Join Date: Jan 2012
Location: texas
Age: 27
Posts: 38
Trader Rating: (0)
sr20s14koukikid is an unknown quantity at this point
Feedback Score: 0 reviews
Check if the e fans are working. If not could be a bad ground or fan thermostat not turning them on. Unless their running on a switch. . Never mind then


Sent from my iPhone using Tapatalk
sr20s14koukikid is offline   Reply With Quote
Old 02-01-2013, 06:44 PM   #8
TougeSR20Kid
Zilvia Junkie
 
TougeSR20Kid's Avatar
 
Join Date: Dec 2005
Location: Seattle WA
Age: 34
Posts: 452
Trader Rating: (1)
TougeSR20Kid has a little shameless behavior in the past
Feedback Score: 1 reviews
Quote:
Originally Posted by K_style View Post
Maybe air in the system?
That's what I originally thought but I jacked the front end up and sat there burping it for like an hour or so. Can't run the clutch fan so that's not really an option

The fans are running off a switch on a completely dedicated circuit with a light indicating when the circuit is complete aka fans are running.
__________________
Quote:
Originally Posted by mantas View Post
One more thing - i hate your prius.
Namaste mother f**ker
TougeSR20Kid is offline   Reply With Quote
Old 02-01-2013, 06:59 PM   #9
godsmack
Zilvia Addict
 
godsmack's Avatar
 
Join Date: Feb 2009
Location: Allentown, PA
Age: 36
Posts: 652
Trader Rating: (0)
godsmack is an unknown quantity at this point
Feedback Score: 0 reviews
Are your fans shrouded? If not that will help cool. Another thing to check is a/f ratio. If those are off you'll be running hot.
godsmack is offline   Reply With Quote
Old 02-01-2013, 07:00 PM   #10
steve shadows
Post Whore!
 
steve shadows's Avatar
 
Join Date: Aug 2003
Location: LA and OC
Posts: 8,202
Trader Rating: (5)
steve shadows is close to perfectionsteve shadows is close to perfectionsteve shadows is close to perfectionsteve shadows is close to perfectionsteve shadows is close to perfectionsteve shadows is close to perfectionsteve shadows is close to perfectionsteve shadows is close to perfectionsteve shadows is close to perfectionsteve shadows is close to perfectionsteve shadows is close to perfection
Feedback Score: 5 reviews
Send a message via AIM to steve shadows
Bleed the crap out of the cooling system. Most people don't do it right and it can cause all kinds of issues. I would definitely pick up a nismo thermostat too.
__________________
Like Me on FaceBook !
steve shadows is offline   Reply With Quote
Old 02-01-2013, 07:03 PM   #11
TougeSR20Kid
Zilvia Junkie
 
TougeSR20Kid's Avatar
 
Join Date: Dec 2005
Location: Seattle WA
Age: 34
Posts: 452
Trader Rating: (1)
TougeSR20Kid has a little shameless behavior in the past
Feedback Score: 1 reviews
Got a wideband but it's about 14 at idle and 12-13 under load. It's basically running the same as always just hotter. They're not shrouded like you would envision. There's two of them and they basically take up the whole radiator. I'll try sealing up the cracks and let you know what happens
__________________
Quote:
Originally Posted by mantas View Post
One more thing - i hate your prius.
Namaste mother f**ker
TougeSR20Kid is offline   Reply With Quote
Old 02-01-2013, 08:40 PM   #12
cotbu
Post Whore!
 
cotbu's Avatar
 
Join Date: Sep 2005
Location: SWFL
Age: 47
Posts: 3,318
Trader Rating: (3)
cotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nice
Feedback Score: 3 reviews
Are the fans running as pusher or pullers and are they in the correct orientation for said flow? Bleeding the system does not take an hour, if you have bubbles after an hour then you have another issue.
Where are you getting your temps from?

I've been doing some testing lately and currently still am. What I've found is that a oem clutch an shrouded system does not cool better than an electric fan setup. It is a convenience thing I guess. Cooling better! That's a myth. Aftermarket hose sensor gauge location: upper sr20, lower sr20, and stock location through ecu temp sensor via consult.
The upper hose gave the closest readings to the ecu temp sensor during normal and spirited driving, I was able to get the upper aftermarket gauge to 210-215f, but the ect max temp was 194f. the lower hoses gauge read like 140f max. Clutch Fan setup.
The reading from the efan setup is almost identical, and I'm not sure if I did the exact same thing but the temps were, 200f upper gauge, lower hose gauge never registered temps until I was idle, ECT 187f max. My thermostat for the efan come on at 85c which is 185f. My cooling system: oem t-stat(8+yrs old) CX racing dual core radiator, single s blade (IIRC 14") 1 gallon 50/50 plus 1qt water.
Test equipment, borrowed s13 oem clutch fan shroud, defi temp gauge and hose adapter.

Since the defi advance gauge reads at a lower temp 20c, gonna swap it to the lower hose and see if i get the same results, with temps.
__________________

LoverTechnologies "Half Broken Things!"
cotbu is offline   Reply With Quote
Old 02-01-2013, 09:28 PM   #13
MrSanchez925
Zilvia Junkie
 
Join Date: Feb 2012
Location: Martinez, Ca
Age: 32
Posts: 412
Trader Rating: (4)
MrSanchez925 is an unknown quantity at this point
Feedback Score: 4 reviews
What fans are you using?

if you aren't using QUALITY fans, then You most likely aren't pulling enough cfm to keep the car cool
MrSanchez925 is offline   Reply With Quote
Old 02-01-2013, 09:50 PM   #14
ashtonroche
Zilvia Junkie
 
Join Date: Dec 2006
Location: yuma
Age: 37
Posts: 397
Trader Rating: (0)
ashtonroche is an unknown quantity at this point
Feedback Score: 0 reviews
Couple things,

Is the temp just slowly rising and rising or is it just constantly running hot. Does it only run hot when your beating on it or all the time cruising or not.

Good quality electric fans are a must, I prefer Flexalite duals for the rwd cars. Every swap ive done with them has never had an issue even with oem thermostats. Only time ive seen heat problems is with crappy fans. Your better off with an oem fan clutch and shroud than crappy fans.

The flexalites pull 2500 cfm from dual 12's, they are built in one unit with a shroud and seal that fits perfectly on an oem or koyo radiator making a nice tight seal. You want to wire them up as pullers so it moves air into the engine bay not trying to force air out.

If the overheating persists then you might have hg problems. But usually when that happens it will just keep getting hotter and hotter until it boils over, blows a hose, and so on.

The crap slim fans that come with most of the koyo radiators and so on are crap, they will flow what maybe one flexalite fan will.

The flexalites are expensive but they last forever and they are damn good fans. My buddy who drifts his car was using crappy fans and whenever he would beat on the car drifting his car would start to run hot. Fans just couldnt keep up. So instead of spending 350 bucks on the flexalite duals he ended up just going back to an oem fan clutch and shroud for under 100 bucks and never had a problem again. The oem fan moves a lot of air but yeah its not as clean and it will rob some power.
ashtonroche is offline   Reply With Quote
Old 02-02-2013, 12:23 AM   #15
OrangeVirus1
BANNED
 
Join Date: Jan 2013
Location: PyongYang DPRK-N. Korea, Province 2
Posts: 1,236
Trader Rating: (0)
OrangeVirus1 is an unknown quantity at this point
Feedback Score: 0 reviews
Try waterless coolant
OrangeVirus1 is offline   Reply With Quote
Old 02-02-2013, 07:07 AM   #16
ashtonroche
Zilvia Junkie
 
Join Date: Dec 2006
Location: yuma
Age: 37
Posts: 397
Trader Rating: (0)
ashtonroche is an unknown quantity at this point
Feedback Score: 0 reviews
^^^ worst idea ever....lol.

Water actually has more cooling properties and heat exchange than coolant does. The more % water you run the better the cooling affect. This is a fact. Water wetter does the same thing. What he was running to begin with is about as best as you can possibly do. All water and 2 bottles of water wetter. Perfect combo. His problem is elsewhere.
ashtonroche is offline   Reply With Quote
Old 02-02-2013, 08:44 AM   #17
zombiewolf513
BANNED
 
Join Date: Mar 2011
Location: AZ
Age: 33
Posts: 1,682
Trader Rating: (6)
zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513 zombiewolf513
Feedback Score: 6 reviews
To bleed the coolant system right, you should do the whole process at least 2-3 times. shake the radiator, too. A lot of air gets stuck in that thing. I had the same issue a long time ago, turned out I wasn't bleeding it right.
zombiewolf513 is offline   Reply With Quote
Old 02-02-2013, 08:43 PM   #18
rwtf
Zilvia Addict
 
rwtf's Avatar
 
Join Date: Jun 2011
Location: Maryville, TN
Age: 29
Posts: 830
Trader Rating: (3)
rwtf is an unknown quantity at this point
Feedback Score: 3 reviews
Quote:
Originally Posted by K_style View Post
You are wrong. it opens at 62*C.
So i was 2*c off
__________________
rwtf is offline   Reply With Quote
Old 02-02-2013, 08:56 PM   #19
OrangeVirus1
BANNED
 
Join Date: Jan 2013
Location: PyongYang DPRK-N. Korea, Province 2
Posts: 1,236
Trader Rating: (0)
OrangeVirus1 is an unknown quantity at this point
Feedback Score: 0 reviews
waterless coolant, it's nothing you can buy off the shelf and doesn't use glycol or any of that crap, it's like 60 bucks a gallon but it cools better than water. look it up
OrangeVirus1 is offline   Reply With Quote
Old 02-02-2013, 09:06 PM   #20
skysilvias13
Zilvia Addict
 
skysilvias13's Avatar
 
Join Date: May 2009
Location: Menifee,CA
Posts: 833
Trader Rating: (27)
skysilvias13 is an unknown quantity at this point
Feedback Score: 27 reviews
Are you leaking or burning coolant?
skysilvias13 is offline   Reply With Quote
Old 02-02-2013, 09:29 PM   #21
ashtonroche
Zilvia Junkie
 
Join Date: Dec 2006
Location: yuma
Age: 37
Posts: 397
Trader Rating: (0)
ashtonroche is an unknown quantity at this point
Feedback Score: 0 reviews
Thats fine, but its not needed. Water and water wetter is the most effective and cheapest way to go. Ive never had issues when using either good electric fans or the oem clutch fan and shroud.
ashtonroche is offline   Reply With Quote
Old 02-03-2013, 12:16 PM   #22
TougeSR20Kid
Zilvia Junkie
 
TougeSR20Kid's Avatar
 
Join Date: Dec 2005
Location: Seattle WA
Age: 34
Posts: 452
Trader Rating: (1)
TougeSR20Kid has a little shameless behavior in the past
Feedback Score: 1 reviews
Not leaking or burning coolant I continued to bleed it and burp it and it did lower it, but yeah still not 170 which is where my thermo is rated for. It's closer to 195
__________________
Quote:
Originally Posted by mantas View Post
One more thing - i hate your prius.
Namaste mother f**ker
TougeSR20Kid is offline   Reply With Quote
Old 02-03-2013, 04:38 PM   #23
cotbu
Post Whore!
 
cotbu's Avatar
 
Join Date: Sep 2005
Location: SWFL
Age: 47
Posts: 3,318
Trader Rating: (3)
cotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nice
Feedback Score: 3 reviews
You're not understanding how things work!(not an attack) The thermostat only allows coolant to enter the engine that's all. With a lower temp thermo, the engine cooling can start earlier and allow the radiator and fans maintain a lower engine temp.

I know the marketing for thermostats doesn't state anything about the actual work of the thermostat. it's supposed to be understood.

That being said, if you had no radiator or fans....., your thermostat should still open at it's designated temp. GET IT? Of course the temp would rise above what the thermostat is rated for and that's to be expected. With fans and radiator working efficiently, the desired engine temps can be maintained, as the water/coolant is what is being cooled, and in return the engine temps stay under control.

Now, I'd like to know what your ECT sensor is reading? I tune against the ECT, but use an aftermarket gauge to help me keep engine temps under control, while not connected to my laptop.
Foot Ball.........!
__________________

LoverTechnologies "Half Broken Things!"
cotbu is offline   Reply With Quote
Old 02-03-2013, 05:00 PM   #24
shanelach
Zilvia Member
 
Join Date: Jun 2008
Location: Dracut, MA
Posts: 256
Trader Rating: (1)
shanelach is an unknown quantity at this point
Feedback Score: 1 reviews
Where are you making your readings, op?
__________________
http://bosstownfr.blogspot.com/
shanelach is offline   Reply With Quote
Old 02-03-2013, 05:52 PM   #25
unijabnx2000
Leaky Injector
 
unijabnx2000's Avatar
 
Join Date: Jul 2012
Location: NC
Posts: 98
Trader Rating: (0)
unijabnx2000 is an unknown quantity at this point
Feedback Score: 0 reviews
Where are you getting those temps from and why do you think 195-205 is bad?
unijabnx2000 is offline   Reply With Quote
Old 02-03-2013, 07:06 PM   #26
TougeSR20Kid
Zilvia Junkie
 
TougeSR20Kid's Avatar
 
Join Date: Dec 2005
Location: Seattle WA
Age: 34
Posts: 452
Trader Rating: (1)
TougeSR20Kid has a little shameless behavior in the past
Feedback Score: 1 reviews
Autometer temp gauge. 195 is still 25 degrees higher than thermo, it should be a little cooler than 195-205. Standard operating temp is still a little lower than that and bear in mind when I started this endeavor it was at 210-215... I mean I am not worried just a little more like why after everything is it still a little high.
__________________
Quote:
Originally Posted by mantas View Post
One more thing - i hate your prius.
Namaste mother f**ker
TougeSR20Kid is offline   Reply With Quote
Old 02-03-2013, 07:13 PM   #27
unijabnx2000
Leaky Injector
 
unijabnx2000's Avatar
 
Join Date: Jul 2012
Location: NC
Posts: 98
Trader Rating: (0)
unijabnx2000 is an unknown quantity at this point
Feedback Score: 0 reviews
The normal on nissan cars with electric fans, the ecu doesnt turn them on until 212F (speed under 12 mph and a/c off)
unijabnx2000 is offline   Reply With Quote
Old 02-03-2013, 07:13 PM   #28
TougeSR20Kid
Zilvia Junkie
 
TougeSR20Kid's Avatar
 
Join Date: Dec 2005
Location: Seattle WA
Age: 34
Posts: 452
Trader Rating: (1)
TougeSR20Kid has a little shameless behavior in the past
Feedback Score: 1 reviews
Quote:
Originally Posted by cotbu View Post
Foot Ball.........!
Hahahaha yes!!!!!!

Nah I understand how the thermo works but 25-35 over still seems a little high I mean it should be at least in the 185-195 range right?
__________________
Quote:
Originally Posted by mantas View Post
One more thing - i hate your prius.
Namaste mother f**ker
TougeSR20Kid is offline   Reply With Quote
Old 02-03-2013, 07:17 PM   #29
TougeSR20Kid
Zilvia Junkie
 
TougeSR20Kid's Avatar
 
Join Date: Dec 2005
Location: Seattle WA
Age: 34
Posts: 452
Trader Rating: (1)
TougeSR20Kid has a little shameless behavior in the past
Feedback Score: 1 reviews
Quote:
Originally Posted by unijabnx2000 View Post
The normal on nissan cars with electric fans, the ecu doesnt turn them on until 212F (speed under 12 mph and a/c off)
Fans are hard wired and always on
__________________
Quote:
Originally Posted by mantas View Post
One more thing - i hate your prius.
Namaste mother f**ker
TougeSR20Kid is offline   Reply With Quote
Old 02-03-2013, 07:20 PM   #30
shanelach
Zilvia Member
 
Join Date: Jun 2008
Location: Dracut, MA
Posts: 256
Trader Rating: (1)
shanelach is an unknown quantity at this point
Feedback Score: 1 reviews
Where is your sensor
__________________
http://bosstownfr.blogspot.com/
shanelach is offline   Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 04:11 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
vB.Sponsors
Copyright © 1998 - 2019, Zilvia.net™