2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

water temp gage hook up

Thread Tools
 
Search this Thread
 
Old 04-16-06, 06:43 AM
  #26  
Senior Member

 
DASUPACAT1's Avatar
 
Join Date: Jul 2005
Location: FORT WAYNE
Posts: 603
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by NZConvertible
That's the worst place to put it. That drain is a branch off the coolant passage, so there's no flow over the sensor. It'll eventually read right, but it's response will be much slower than it is supposed to be.

I installed a digital temp gauge a little while ago, and the sender install didn't turn out quite as I expected. I decided to drill and tap one of the air pump bracket bolt holes, but because this was originally a blind hole (not open all the way through), once the sender was installed only the very tip of it was in the coolant flow (~1mm). As above, this would the gauge respond slowly, so I decided to plug this hole, and drill and tap the blank boss on the back of the water pump instead.

This time once I got the sender in I discovered it clashed with the thermostat, and unscrewing it far enough so that the thermostat fitted meant I had the same problem as before. Only the tip of the sender was exposed. So I went back to my original location, but I attacked the inside of the water pump with a die grinder to fully expose the sender to coolant.

IMO this is the ideal location for a temp sender, but only if you modify the pump housing as I did.
is this a mech. or elect. gauge? who makes it?
Old 04-16-06, 07:33 AM
  #27  
Rotary Enthusiast

 
RylAssassin's Avatar
 
Join Date: May 2002
Location: Boston
Posts: 1,203
Likes: 0
Received 0 Likes on 0 Posts
My water temp sensor probe is enormous. I think its one of the higher temp ones. Where do i get one small like the one thats in NZ's pic? Or can i use the one with the giant probe?
Old 04-16-06, 08:39 AM
  #28  
I'm a boost creep...

 
NZConvertible's Avatar
 
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes on 8 Posts
Originally Posted by DASUPACAT1
is this a mech. or elect. gauge? who makes it?
Electric with a digital display. It's a cheapie off a local auction site. It's branded Auto Gage (but it's not Autometer's Autogage).

Originally Posted by RylAssassin
My water temp sensor probe is enormous. I think its one of the higher temp ones. Where do i get one small like the one thats in NZ's pic? Or can i use the one with the giant probe?
You have to use the sender provided with the gauge or it won't read accurately. If you don't like the sender you'll need to get a new gauge.
Old 04-16-06, 05:39 PM
  #29  
Senior Member

iTrader: (5)
 
Nova7's Avatar
 
Join Date: Aug 2003
Location: Kitchener, ON
Posts: 722
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by jdmsuper7
Actually, the Autometer one does, I'm running mine there right now. Autometer is an exception though, my HKS oil/water temp gauge has a HUGE probe that is easily twice the size of the autometer one.
If you replace the stock sender with a different one, what gives a signal to the ECU? Can you just tap off the aftermarket sender?
Old 04-16-06, 06:20 PM
  #30  
I'm a boost creep...

 
NZConvertible's Avatar
 
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes on 8 Posts
The ECU has a totally different sensor on the back of the water pump.
Old 04-19-06, 06:40 AM
  #31  
Senior Member

iTrader: (5)
 
Nova7's Avatar
 
Join Date: Aug 2003
Location: Kitchener, ON
Posts: 722
Likes: 0
Received 0 Likes on 0 Posts
Yea, I know, but the one guy seemed to be saying that he replaced it with his Autometer sensor. So I was wondering how he made that work with the ECU. Sounds like a problem to me.
Old 04-19-06, 07:13 AM
  #32  
I'm a boost creep...

 
NZConvertible's Avatar
 
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes on 8 Posts
Sounds like he had no clue what he was doing. The ECU thermo-sensor should not be touched unless you're installing an aftermarket ECU that comes with it's own sensor.
Old 04-19-06, 05:29 PM
  #33  
Busa dude

 
TII-aholic's Avatar
 
Join Date: Jul 2004
Location: Orlando, FL
Posts: 452
Likes: 0
Received 0 Likes on 0 Posts
could you put a piece of pipe in line on one of the coolant hoses going to the radiator? if so which one?
Old 06-03-06, 11:27 PM
  #34  
check the join date

 
rotarychainsaw's Avatar
 
Join Date: Jul 2001
Location: Jersey Shore / Philly
Posts: 190
Likes: 0
Received 0 Likes on 0 Posts
OK this confused me. Could I get a better pic of how you tap the water pump housing? Im not sure I understand this. Thank you.
Old 06-04-06, 08:33 AM
  #35  
rotorhead

iTrader: (3)
 
arghx's Avatar
 
Join Date: Aug 2004
Location: cold
Posts: 16,182
Received 429 Likes on 263 Posts
ok i was lazy

you know that little temp sensor on the thermostat housing that activates that extra cooling fan? I just put it in there, with the help of an adapter thing. It's hardly the perfect place to put the thing but it's more accurate than the stock sensor, and I've always got an oil temp gauge to consult...
Old 06-05-06, 07:22 PM
  #36  
check the join date

 
rotarychainsaw's Avatar
 
Join Date: Jul 2001
Location: Jersey Shore / Philly
Posts: 190
Likes: 0
Received 0 Likes on 0 Posts
bump...

Is the NZconvertible spot the way to go? I was looking at my WP housing today and there doesn't really seem to be anyplace on the back to do it. maybe just drill right into the side?
Old 06-06-06, 09:06 PM
  #37  
check the join date

 
rotarychainsaw's Avatar
 
Join Date: Jul 2001
Location: Jersey Shore / Philly
Posts: 190
Likes: 0
Received 0 Likes on 0 Posts
final bump from me. this forum moves too fast//
Old 02-11-08, 06:04 PM
  #38  
Rotary Freak

iTrader: (7)
 
Shainiac's Avatar
 
Join Date: Jun 2006
Location: Lyme, CT
Posts: 1,575
Received 42 Likes on 31 Posts
My 2-5/8" Autometer mechanical water temp guage has a massive sender. It uses a massive 1/2" NPT adapter and a 3/8" NPT compression fitting similar to the flare fittings on brakes. I couldnt find a place that A) was big enough to house the 1/2" fitting, B) didnt have the sender hitting the thermostat, or C) didnt put a nasty kink in the copper line of my mechanical sender.

I ended up taking my thermostat neck to a local welder and paying $5 to have him cut the threads off of the 1/2" adapter and weld the female portion where the OEM fan sensor goes. Since this made it sit up a bit higher than I would have liked, I used a die grinder to remove as much material as I could around the sender to get maximum flow. I ended up with most of the sender getting exposure to coolant and the last inch or more getting direct contact with the coolant. I know this isnt ideal considering it's after the thermostat, but I get acurate readings and a nice, fat guage to keep a watchful eye on my fresh rebuild.

Pic:

Last edited by Shainiac; 02-11-08 at 06:15 PM.
Old 02-11-08, 07:02 PM
  #39  
Looks ahead!

iTrader: (1)
 
jdmsuper7's Avatar
 
Join Date: Jan 2004
Location: Ephrata, PA
Posts: 1,079
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by NZConvertible
Sounds like he had no clue what he was doing. The ECU thermo-sensor should not be touched unless you're installing an aftermarket ECU that comes with it's own sensor.
I put it in the stock coolant temp sensor (for the stock dash gauge) position next to the oil pressure sensor on the block. I DID NOT remove the ECU thermosensor with the green plug that is in the water pump neck.

I apologize for the ambiguity of my past posts.

Also, for future reference the gauge I use is a autometer pro-lite electric one with the aluminum look face.
Old 02-11-08, 08:37 PM
  #40  
I knw wht u did last sumr

 
Soma's Avatar
 
Join Date: May 2006
Location: AZ
Posts: 356
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by jdmsuper7
Actually, the Autometer one does, I'm running mine there right now. Autometer is an exception though, my HKS oil/water temp gauge has a HUGE probe that is easily twice the size of the autometer one.
I know for a fact this one will NOT fit the stock sending location.
http://store.summitracing.com/partde...5&autoview=sku
I would still recommend this gauge though. Digital rocks!
Old 02-11-08, 08:55 PM
  #41  
Looks ahead!

iTrader: (1)
 
jdmsuper7's Avatar
 
Join Date: Jan 2004
Location: Ephrata, PA
Posts: 1,079
Likes: 0
Received 0 Likes on 0 Posts
It wasn't me, it was the poster before me.

Also, my gauge is in this series:

http://store.summitracing.com/egnsea...+400442+300168

but I have one that is like 1 7/8" and I don't see anything that small there.
Old 02-11-08, 09:45 PM
  #42  
Junior Member

 
DEIVIONCRX's Avatar
 
Join Date: Jan 2008
Location: Oklahoma
Posts: 22
Likes: 0
Received 0 Likes on 0 Posts
Greddy as well as few others make this, might be worth the $25 if you want to keep the stock sensor as a backup. Buddy Club

http://store.summitracing.com/partde...700+4294843215
http://www.frsport.com/Greddy-Radiat...mm_p_9267.html
Old 02-11-08, 10:14 PM
  #43  
The Blue Blur

 
Rx-7fetish's Avatar
 
Join Date: Dec 2006
Location: Virginia
Posts: 716
Likes: 0
Received 0 Likes on 0 Posts
sweet, finally hose adapters i have been putting off getting an aftermarket gauge cause i was afraid to drill into the water pump housing, i had one crack on me before driving down the interstate, that was fun, i realize it was prolly just a fluke, but what can happen will happen, and im not lettin that happen again, i cant afford all these repairs lol
Old 02-11-08, 11:07 PM
  #44  
I'm a boost creep...

 
NZConvertible's Avatar
 
Join Date: Jan 2002
Location: Auckland, New Zealand
Posts: 15,608
Likes: 0
Received 8 Likes on 8 Posts
Originally Posted by jdmsuper7
I put it in the stock coolant temp sensor (for the stock dash gauge) position next to the oil pressure sensor on the block. I DID NOT remove the ECU thermosensor with the green plug that is in the water pump neck.
I don't know why you're quoting me. Not only is my post two years old, it was in reply to someone else's question.
Old 02-12-08, 12:06 AM
  #45  
Retired Moderator, RIP

iTrader: (142)
 
misterstyx69's Avatar
 
Join Date: Sep 2005
Location: Smiths Falls.(near Ottawa!.Mapquest IT!)
Posts: 25,581
Likes: 0
Received 131 Likes on 114 Posts
Alright.since this thread is resurrected.I have a Hose "adapter" that will allow me to put a Temp Sender into this Piece and place it in the Rad hose..the Question I am Posing is Which Hose DO I put it in?..the Lower or the UPPER hose?.I don't wish to drill the water pump housing,and I would like to keep the stock sender in it's location..Thanks Guys,STYX..
Old 02-12-08, 01:56 AM
  #46  
Rotary Freak

iTrader: (7)
 
Shainiac's Avatar
 
Join Date: Jun 2006
Location: Lyme, CT
Posts: 1,575
Received 42 Likes on 31 Posts
Definately the upper hose. The lower rad hose has already been cooled off by the radiator, so the temps are irrelevent to the actual temps of the motor. The only problem with having the sender in the rad hose is that in the occurance of a thermostat failure (ruined one of my engines), the gauge wont tell you anything. Upon starting the car, the gauge reads cold until the thermostat pops open and then the temps climp quickly. I usually just keep an eye on my stock gauge until the car is warmed up and my aftermarket gauge is reading. Other than that and the fact that this is one jumbled, ranting post, my gauge works great.
Old 02-12-08, 04:32 AM
  #47  
Junior Member

 
JDMark's Avatar
 
Join Date: Dec 2002
Location: washington
Posts: 9
Likes: 0
Received 0 Likes on 0 Posts
what the size of the upper rad hose? i tried a 38mm adapter and its alittle small so im guessin 40-42mm?
Old 02-12-08, 10:34 AM
  #48  
Rotary Freak

iTrader: (7)
 
Shainiac's Avatar
 
Join Date: Jun 2006
Location: Lyme, CT
Posts: 1,575
Received 42 Likes on 31 Posts
1.5"
Someon put a link a couple posts up directly to sites selling them.
Old 02-12-08, 07:59 PM
  #49  
The Blue Blur

 
Rx-7fetish's Avatar
 
Join Date: Dec 2006
Location: Virginia
Posts: 716
Likes: 0
Received 0 Likes on 0 Posts
Okay, i have my pressure cap on my radiator which is the one my overflow tank is run to and the one on the thermostat neck is just to close a hole now, could i just unbolt the plate the pressure cap is on and then take a blockoff plate the same shape and weld a nut with the right sized threads for my sensor and put it there? would this be an OKAY place to put it, i dont want to go drilling holes in stuff thats hard to remove, please dont tell me the pump housing is the best place, i understand that i just flat out refuse to drill any extra holes in anything.
Old 02-12-08, 09:11 PM
  #50  
The Blue Blur

 
Rx-7fetish's Avatar
 
Join Date: Dec 2006
Location: Virginia
Posts: 716
Likes: 0
Received 0 Likes on 0 Posts
Anybody?


Quick Reply: water temp gage hook up



All times are GMT -5. The time now is 07:23 PM.