temp sender for AFR heads????
Thread Starter
Burning Brakes
Joined: Apr 2000
Posts: 1,145
Likes: 1
temp sender for AFR heads????
Has anyone got a part number for a temp sender that will fit into the 3/8 npt hole that AFR puts in their heads?
Tha factory sender is 1/2 npt and I am not interested in using an adapter.
Thanks
Chris
Tha factory sender is 1/2 npt and I am not interested in using an adapter.
Thanks
Chris
Pro
Joined: May 2001
Posts: 596
Likes: 0
From: Yardley PA
Re: temp sender for AFR heads???? (71roadster)
Unfortunately the resistance curve on our senders is quite unique. Otherwise I believe the C4 has a 3/8" (Guessing from the 3/8" fan switch)
How about drilling and running a bigger tap?
Stefan
How about drilling and running a bigger tap?
Stefan
Racer
Joined: Apr 2001
Posts: 269
Likes: 0
From: Golden Colo.
Re: temp sender for AFR heads???? (71roadster)
Had the same problem as you with my AFR heads. I made a adapter for the OEM sending unit. Seems to work fine and getting good temp. readings.
The top looking down on tip of probe.
[Modified by 82zoom, 9:05 PM 4/24/2003]
The top looking down on tip of probe.
[Modified by 82zoom, 9:05 PM 4/24/2003]
C6 the C5 of tomorrow
Joined: Nov 2000
Posts: 6,665
Likes: 2
From: Twin Cities Minnesota
Re: temp sender for AFR heads???? (tnt76vette)
If you are running Aluminum heads you are probably running an Aluminum intake :crazy: Put the sensor in the intake by the temp gauge. Screws right in.
It will be 5 -15 derees hotter there than in the heads since it's after the heads rather than berfore them...
Oh and the answer is NO. There is no 3/8' replacement.
[Modified by 427V8, 11:14 PM 4/24/2003]
It will be 5 -15 derees hotter there than in the heads since it's after the heads rather than berfore them...
Oh and the answer is NO. There is no 3/8' replacement.
[Modified by 427V8, 11:14 PM 4/24/2003]
Team Owner
Joined: May 2001
Posts: 29,745
Likes: 3
From: Exiled to Richmond, VA - Finally sold my house in Murfreesboro, TN ?? Corner of "Bumf*&k and 'You've got a purdy mouth'."
CI 6-7-8 Veteran
CI-VIII Burnout Champ
St. Jude Donor '06-'10, '13
Re: temp sender for AFR heads???? (tnt76vette)
Dont understand what all the fuss is about. I went to my small town America auto parts store and bought a 3/8" GM temp sensor w/o knowing or caring about the part #.
No one has been able to find a 3/8" temp sensor that reads correctly.
In the past you had to either use a reducer, or move the sending unit to the intake manifold.
Drifting
Joined: Sep 1999
Posts: 1,411
Likes: 1
From: Wylie TX
Re: temp sender for AFR heads???? (71roadster)
I went through this and you basically have 4 options:
1) Relocate your sender to your intake manifold
2) Buy a 3/8" sender and put some resistors in to make it somewhat accurate
3) Get an adaptor
4) Get a new gauge/sender
Since I have my fan switch in the intake option 1 was not available to me.
I then went to NAPA and the guy showed me the book that had all of the specs of all of their sending units. I had previously put my sender in a pot of water on the stove and measured the resistance at several temps. I could not find anything close to the original specs in the NAPA book. I ended up buying a sending unit and put some resistors in to make it accurate from 190* to 210*. The coolant would have to get at least 150* before the gauge would even move. I lived with this for a while and it worked good, but I ended up replacing my oil pressure, water temp, and Ammeter (with a voltmeter) so my gauge is accurate over the entire range now.
1) Relocate your sender to your intake manifold
2) Buy a 3/8" sender and put some resistors in to make it somewhat accurate
3) Get an adaptor
4) Get a new gauge/sender
Since I have my fan switch in the intake option 1 was not available to me.
I then went to NAPA and the guy showed me the book that had all of the specs of all of their sending units. I had previously put my sender in a pot of water on the stove and measured the resistance at several temps. I could not find anything close to the original specs in the NAPA book. I ended up buying a sending unit and put some resistors in to make it accurate from 190* to 210*. The coolant would have to get at least 150* before the gauge would even move. I lived with this for a while and it worked good, but I ended up replacing my oil pressure, water temp, and Ammeter (with a voltmeter) so my gauge is accurate over the entire range now.
