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

jskateborders · 03-13-2008, 07:12 PM

So here is the story
sr overheated, blew motor, rebuilt motor from ground up.
head decked
block decked
oem hg
all internalls

It overheats
I have amazing oil pressure
I put in a nismo thermo
alum rad
distilled water, water wetter
I figured maybe the cts was causing it to run rich, replaced, no avail.
new 16psi cap
no leaks
has new water pump of course.
the temp just goes up and stalls at 180 for a while, then goes up and up and up.
I cut it at 220 at the latest when it does this.

I have altima fans, And I know sometimes they cause overheating on the highway (I live in bfe, all there is is highway for miles)
but when I stop to Idle, the temp will keep rising.

What am I missing here guys?

johngriff · 03-13-2008, 07:14 PM

Did you bleed the air out?

Compression, leak down?

jskateborders · 03-13-2008, 07:20 PM

bled
car on to 180
of, unscrew bleeder
re screw
fill
repeat till no more air
compression tester is actually not wanting to come out of the cylinder right now...., But I know that its not a blown hg, no smoke, no loss of water, no compression going into water lines, no milky oil, no oozy water. Trust me Ive blown a hg, this isnt it. This seems to be the initial prob as to why I messed my motor up in the first place.

Sileighty_85 · 03-13-2008, 07:30 PM

what gauge are you going off of?

jskateborders · 03-13-2008, 07:43 PM

aftermarket temp

Sileighty_85 · 03-13-2008, 07:45 PM

autometer, greddy, blitz, Defi?

jskateborders · 03-13-2008, 07:47 PM

prosport elec. brand new

Sileighty_85 · 03-13-2008, 07:53 PM

Does it come with its own sensor or tap off the OEM one?

Edit: Saw the site so yeah

pop back in an OEM thermo and see what happens
I know its a Nismo but that doesnt mean it can t be bad

jskateborders · 03-13-2008, 09:01 PM

yea thats what I was thinking. That would suck but really Id be pretty happy if it was a bad thermo.

Sileighty_85 · 03-13-2008, 09:06 PM

well if it does turn out to be the termo is ya want another one heres one for an awsome price
http://www.thenismoshop.com/ikorb.ph...product_id=266

I just order one from them

jskateborders · 03-13-2008, 11:09 PM

So I just tested the thermo.... and it opens. WTF. Im at a loss...

johngriff · 03-13-2008, 11:40 PM

Ahhh.. lol where is the aftermarket gauge located? Upper hose?

Nissan didn't put their temp sensor in the upper hose, they put it between the block and head to read the "median" temperature.

You are just reading the hot water being taken away from the head.

jskateborders · 03-13-2008, 11:52 PM

yea I am, But the overflow tank will be boiling, which I know Is never good. I like to know the hottest point on my motor. Im going to try bleeding it for the fifth time. My hoses are hooked up to the heater core, but my climate control is broke, so maybe theres a bubble (hopefully).
If not I just have one of those jdm tyte Hott sr's

Sileighty_85 · 03-14-2008, 08:21 AM

Quote:

Originally Posted by johngriff

Ahhh.. lol where is the aftermarket gauge located? Upper hose?

Nissan didn't put their temp sensor in the upper hose, they put it between the block and head to read the "median" temperature.

You are just reading the hot water being taken away from the head.

Im using Defi's for My mine, I have my sensor in the Upper hose and on a normal day it will read about 84*C
Im running Stock SR Thermo and Radiator in mine.

(waiting till the weekend to drop in my Alumin. Koyo)

jskateborders · 03-14-2008, 01:51 PM

just went on the highway with
fans unplugged
hood off.
Still overheated.
WTFFFFFFFFFFFF
took longer, but thats not the point.
fuckin 15 dollars to anyone who can fix my problem

timtiminy · 03-14-2008, 02:01 PM

i've always filled my radiator while the car is running, thermo opens dump more coolant in keep doing this till no more coolant goes into the radiator and close her up. usually this eliminates air in the system and you dont even need to bleed it, but i do so for good measure. Try bypassing your heater core if your climate control doesnt work anyhow, just so you eliminate any possible problems there.

jskateborders · 03-14-2008, 02:27 PM

I just pulled my guages out to manually open the heater core, So its bleeding now. Lets hope this fixes it : )

03-13-2008, 07:12 PM	#1
jskateborders Zilvia FREAK! Join Date: Apr 2007 Location: Tucson AZ Age: 36 Posts: 1,258 Trader Rating: (5) Feedback Score: 5 reviews	aaahhh sr overheating 15$ to anyone who figures it out So here is the story sr overheated, blew motor, rebuilt motor from ground up. head decked block decked oem hg all internalls It overheats I have amazing oil pressure I put in a nismo thermo alum rad distilled water, water wetter I figured maybe the cts was causing it to run rich, replaced, no avail. new 16psi cap no leaks has new water pump of course. the temp just goes up and stalls at 180 for a while, then goes up and up and up. I cut it at 220 at the latest when it does this. I have altima fans, And I know sometimes they cause overheating on the highway (I live in bfe, all there is is highway for miles) but when I stop to Idle, the temp will keep rising. What am I missing here guys? __________________ "I am Norwegian, and are not familiar with your urban words :P" Last edited by jskateborders; 03-14-2008 at 01:54 PM..

03-13-2008, 07:14 PM	#2
johngriff Post Whore! Join Date: Jun 2004 Location: Long Beach, CA Posts: 4,103 Trader Rating: (4) Rides Gallery: johngriff Feedback Score: 4 reviews	Did you bleed the air out? Compression, leak down? __________________ [email protected]

03-13-2008, 07:20 PM	#3
jskateborders Zilvia FREAK! Join Date: Apr 2007 Location: Tucson AZ Age: 36 Posts: 1,258 Trader Rating: (5) Feedback Score: 5 reviews	bled car on to 180 of, unscrew bleeder re screw fill repeat till no more air compression tester is actually not wanting to come out of the cylinder right now...., But I know that its not a blown hg, no smoke, no loss of water, no compression going into water lines, no milky oil, no oozy water. Trust me Ive blown a hg, this isnt it. This seems to be the initial prob as to why I messed my motor up in the first place. __________________ "I am Norwegian, and are not familiar with your urban words :P"

03-13-2008, 07:30 PM	#4
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	what gauge are you going off of? __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

03-13-2008, 07:43 PM	#5
jskateborders Zilvia FREAK! Join Date: Apr 2007 Location: Tucson AZ Age: 36 Posts: 1,258 Trader Rating: (5) Feedback Score: 5 reviews	aftermarket temp __________________ "I am Norwegian, and are not familiar with your urban words :P"

03-13-2008, 07:45 PM	#6
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	autometer, greddy, blitz, Defi? __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

03-13-2008, 07:47 PM	#7
jskateborders Zilvia FREAK! Join Date: Apr 2007 Location: Tucson AZ Age: 36 Posts: 1,258 Trader Rating: (5) Feedback Score: 5 reviews	prosport elec. brand new __________________ "I am Norwegian, and are not familiar with your urban words :P"

03-13-2008, 07:53 PM	#8
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	Does it come with its own sensor or tap off the OEM one? Edit: Saw the site so yeah pop back in an OEM thermo and see what happens I know its a Nismo but that doesnt mean it can t be bad __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

03-13-2008, 09:01 PM	#9
jskateborders Zilvia FREAK! Join Date: Apr 2007 Location: Tucson AZ Age: 36 Posts: 1,258 Trader Rating: (5) Feedback Score: 5 reviews	yea thats what I was thinking. That would suck but really Id be pretty happy if it was a bad thermo. __________________ "I am Norwegian, and are not familiar with your urban words :P"

03-13-2008, 09:06 PM	#10
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	well if it does turn out to be the termo is ya want another one heres one for an awsome price http://www.thenismoshop.com/ikorb.ph...product_id=266 I just order one from them __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

03-13-2008, 11:09 PM	#11
jskateborders Zilvia FREAK! Join Date: Apr 2007 Location: Tucson AZ Age: 36 Posts: 1,258 Trader Rating: (5) Feedback Score: 5 reviews	So I just tested the thermo.... and it opens. WTF. Im at a loss... __________________ "I am Norwegian, and are not familiar with your urban words :P"

03-13-2008, 11:40 PM	#12
johngriff Post Whore! Join Date: Jun 2004 Location: Long Beach, CA Posts: 4,103 Trader Rating: (4) Rides Gallery: johngriff Feedback Score: 4 reviews	Ahhh.. lol where is the aftermarket gauge located? Upper hose? Nissan didn't put their temp sensor in the upper hose, they put it between the block and head to read the "median" temperature. You are just reading the hot water being taken away from the head. __________________ [email protected]

03-13-2008, 11:52 PM	#13
jskateborders Zilvia FREAK! Join Date: Apr 2007 Location: Tucson AZ Age: 36 Posts: 1,258 Trader Rating: (5) Feedback Score: 5 reviews	yea I am, But the overflow tank will be boiling, which I know Is never good. I like to know the hottest point on my motor. Im going to try bleeding it for the fifth time. My hoses are hooked up to the heater core, but my climate control is broke, so maybe theres a bubble (hopefully). If not I just have one of those jdm tyte Hott sr's __________________ "I am Norwegian, and are not familiar with your urban words :P"

03-14-2008, 01:51 PM	#15
jskateborders Zilvia FREAK! Join Date: Apr 2007 Location: Tucson AZ Age: 36 Posts: 1,258 Trader Rating: (5) Feedback Score: 5 reviews	just went on the highway with fans unplugged hood off. Still overheated. WTFFFFFFFFFFFF took longer, but thats not the point. fuckin 15 dollars to anyone who can fix my problem __________________ "I am Norwegian, and are not familiar with your urban words :P"

03-14-2008, 02:01 PM	#16
timtiminy Zilvia Addict Join Date: Feb 2006 Location: Socal Posts: 624 Trader Rating: (0) Feedback Score: 0 reviews	i've always filled my radiator while the car is running, thermo opens dump more coolant in keep doing this till no more coolant goes into the radiator and close her up. usually this eliminates air in the system and you dont even need to bleed it, but i do so for good measure. Try bypassing your heater core if your climate control doesnt work anyhow, just so you eliminate any possible problems there.

03-14-2008, 02:27 PM	#17
jskateborders Zilvia FREAK! Join Date: Apr 2007 Location: Tucson AZ Age: 36 Posts: 1,258 Trader Rating: (5) Feedback Score: 5 reviews	I just pulled my guages out to manually open the heater core, So its bleeding now. Lets hope this fixes it : ) __________________ "I am Norwegian, and are not familiar with your urban words :P"