Sr20 temperature issues - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

thizzen4 · 02-03-2013, 07:28 PM

i have the same problem car use to sit at the 2.5 line mark on the stock cluster now sits at the the third line when warmed up and wont go higher or lower when just cruising or beating it if u figure it out pm me please

shanelach · 02-03-2013, 07:32 PM

Stock gauge sucks.

TougeSR20Kid · 02-03-2013, 07:56 PM

Quote:

Originally Posted by shanelach

Where is your sensor

Water inlet right before the block it's the stock gauge sensor with a new sensor. It's a one wire

ashtonroche · 02-03-2013, 08:10 PM

Please dont tell me your sensor is on the upper radiator hose? Not a good spot as that is pretty much where the hottest coolant is going to be and not a true definition of how hot the motor is running. My buddy had the same problem with his when he put his sensor on the upper hose. If anything your sensor should replace where the factory gauge sending unit was. Its the same thread and a direct replacement. That is an accurate temp reading. Not the upper hose.

The factory temp sensor placement is a mixture of where cooled coolant along with recirculated coolant through the head and block can be measured. So its a mixture of both. Of course the coolant making its final exit out of the motor will be hotter. Why do you think there is no sensor placed there from the factory, lol

ashtonroche · 02-03-2013, 08:13 PM

Well if thats the case, im just gonna go out and say your fans are not keeping up with the job. Get better fans or get a stock fan clutch and shroud. Again flexalites are about as best as they come as far as electric fans go. They move a crap ton of air.

unijabnx2000 · 02-03-2013, 08:21 PM

195-205 is completely normal

ashtonroche · 02-03-2013, 08:32 PM

Especially if its after beating on it. Only way you are going to keep it at 170-180 is if you have better fans that can keep up.

But yeah 195-205 is pretty much normal operating temps. Matter fact on a fwd SR the ecu doesnt even kick on the fans until around 206* if im not mistaken, Id have to look at AEM's base tune and see. But yeah, You dont want to see any higher than about 215*.

Again, get better fans and youll be fine. I was running a civic dual core/half width aluminum radiator w/ one flexalite single 1250cfm fan running all the time, electric water pump, no thermostat and my temps would stay about 165-170 at all times unless i was in stop and go, in that case id see about 185-190 at the very highest. Even after doing back to back to back to back pulls on the 430whp setup, I wouldnt see any higher than 185*.

A good fan goes a long ways

unijabnx2000 · 02-03-2013, 08:52 PM

Ashton its 212 for OEM

AEM's startup cal sets it for 203

ashtonroche · 02-03-2013, 08:57 PM

Yeah, knew it was somewhere around there.

TougeSR20Kid · 02-04-2013, 02:44 AM

Ok cool yeah I was checking on my power FC on the drive home right now and it's sitting right around 78 celcius which is on the higher end of operating temp but I was driving it hella conservative. I guess I'm just still in awe that a flush and water with water wetter wouldn't drop it much lower

riptor · 02-17-2013, 11:42 AM

78 on a pfc IS a little hi. althought it is within in limits. I have a koyo with 12 in. FAL pullers, and i dont get over 70 unless im curzin or beatin on her...but even then highest is see is like 72 mayb3 73. but as everyone else has stated you should be ok!

02-03-2013, 07:32 PM	#32
shanelach Zilvia Member Join Date: Jun 2008 Location: Dracut, MA Posts: 256 Trader Rating: (1) Feedback Score: 1 reviews	Stock gauge sucks. __________________ http://bosstownfr.blogspot.com/

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02-03-2013, 07:28 PM	#31
thizzen4 Zilvia FREAK! Join Date: May 2011 Location: tacoma 253 Age: 30 Posts: 1,169 Trader Rating: (22) Feedback Score: 22 reviews	i have the same problem car use to sit at the 2.5 line mark on the stock cluster now sits at the the third line when warmed up and wont go higher or lower when just cruising or beating it if u figure it out pm me please

02-03-2013, 08:10 PM	#34
ashtonroche Zilvia Junkie Join Date: Dec 2006 Location: yuma Age: 37 Posts: 397 Trader Rating: (0) Feedback Score: 0 reviews	Please dont tell me your sensor is on the upper radiator hose? Not a good spot as that is pretty much where the hottest coolant is going to be and not a true definition of how hot the motor is running. My buddy had the same problem with his when he put his sensor on the upper hose. If anything your sensor should replace where the factory gauge sending unit was. Its the same thread and a direct replacement. That is an accurate temp reading. Not the upper hose. The factory temp sensor placement is a mixture of where cooled coolant along with recirculated coolant through the head and block can be measured. So its a mixture of both. Of course the coolant making its final exit out of the motor will be hotter. Why do you think there is no sensor placed there from the factory, lol

02-03-2013, 08:13 PM	#35
ashtonroche Zilvia Junkie Join Date: Dec 2006 Location: yuma Age: 37 Posts: 397 Trader Rating: (0) Feedback Score: 0 reviews	Well if thats the case, im just gonna go out and say your fans are not keeping up with the job. Get better fans or get a stock fan clutch and shroud. Again flexalites are about as best as they come as far as electric fans go. They move a crap ton of air.

02-03-2013, 08:21 PM	#36
unijabnx2000 Leaky Injector Join Date: Jul 2012 Location: NC Posts: 98 Trader Rating: (0) Feedback Score: 0 reviews	195-205 is completely normal

02-03-2013, 08:32 PM	#37
ashtonroche Zilvia Junkie Join Date: Dec 2006 Location: yuma Age: 37 Posts: 397 Trader Rating: (0) Feedback Score: 0 reviews	Especially if its after beating on it. Only way you are going to keep it at 170-180 is if you have better fans that can keep up. But yeah 195-205 is pretty much normal operating temps. Matter fact on a fwd SR the ecu doesnt even kick on the fans until around 206* if im not mistaken, Id have to look at AEM's base tune and see. But yeah, You dont want to see any higher than about 215. Again, get better fans and youll be fine. I was running a civic dual core/half width aluminum radiator w/ one flexalite single 1250cfm fan running all the time, electric water pump, no thermostat and my temps would stay about 165-170 at all times unless i was in stop and go, in that case id see about 185-190 at the very highest. Even after doing back to back to back to back pulls on the 430whp setup, I wouldnt see any higher than 185. A good fan goes a long ways

02-03-2013, 08:52 PM	#38
unijabnx2000 Leaky Injector Join Date: Jul 2012 Location: NC Posts: 98 Trader Rating: (0) Feedback Score: 0 reviews	Ashton its 212 for OEM AEM's startup cal sets it for 203

02-03-2013, 08:57 PM	#39
ashtonroche Zilvia Junkie Join Date: Dec 2006 Location: yuma Age: 37 Posts: 397 Trader Rating: (0) Feedback Score: 0 reviews	Yeah, knew it was somewhere around there.

02-17-2013, 11:42 AM	#41
riptor Zilvia Member Join Date: Oct 2006 Location: va beach Age: 37 Posts: 241 Trader Rating: (2) Feedback Score: 2 reviews	78 on a pfc IS a little hi. althought it is within in limits. I have a koyo with 12 in. FAL pullers, and i dont get over 70 unless im curzin or beatin on her...but even then highest is see is like 72 mayb3 73. but as everyone else has stated you should be ok!