|
|
|
|
| Author |
|
|
Registered
Join Date: Apr 2004
Location: N/A
Posts: 351
|
Details on installing CHT & Voltmeter
I've searched the forum on specifics on how to install CHT and voltage gauges that I just bought but no luck.
I'm going to wire the volt gauge into a switched hot lead under the dash....any specific recommendations which ones (fused etc)? On running the CHT wiring to the engine from the dash, what route have others used? On installing the thermocouple washer under the spark plug, I was planning on #3 but how do I avoid breaking the lead while tighting the plug down? Do I need to bend up the lead? Finally, I was planning on connecting the illumination bulbs to the existing dash light circuit...I presume I should install a fuse in this circuit at the same time since its unfused? Thanks for the help...pics will follow. Graham
__________________
"Penelope" 1980 SC Targa in Grand Prix White |
||
04-06-2005, 07:37 PM
|
|
|
Administrator
Join Date: Feb 2000
Location: Los Angeles
Posts: 13,333
|
I just did this. Tyson at TRE wired my voltmeter. There are plenty of hot lines under the dash. The radio or the cigarette lighter come to mind.
I used the #5 cylinder for the CHT, and was unable to get a plug to seat in the top hole (I have a twin-plugged motor), but had no problem with the bottom one. You do have to bend the point where the sender ring attaches to its lead. As a precaution, I would put a piece of electrical tape around the lead where it comes out of the hole. That's where I saw some fraying.
__________________
Jack Olsen 1972 911 My new video about my garage. • A video from German TV about my 911 |
||
|
04-06-2005, 08:40 PM
|
|
|
Registered
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
|
Graham,
For the probe wiring, go to an electronics or aircraft surplus store and look for some heavy Teflon or fiberglass sleeving material [tubing, but for wires rather than fluid transfer] ... a diameter around 3/16" or 4 mm should work. You want a piece just a milimeter or so shorter than the spark plug seating plane-to-valve cover seating plane for the air seal on the Beru connector. Prep the probe leads by putting a very short piece of thin heatshrink tubing from the washer out to the vertical riser where the wires need to be protected by the stiff sleeve ... parallel to the Beru connector. Put some of the thin heatshrink on the wires so they can pass under the air seal with minimal 'bump' profile.
__________________
Warren Hall, Jr. 1973 911S Targa ... 'Annie' 1968 340S Barracuda ... 'Rolling Thunder' |
||
|
04-06-2005, 09:48 PM
|
|
|
Montana 911
Join Date: May 2002
Location: Montana
Posts: 5,818
|
who is your source for the CHT? I want to install one as well.
__________________
H.D. Smith 2009 997.2 S 3.8 PDK 2019 Ford Ranger Lariat FX4 Baby Raptor 2019 Can Am Renegade 1000R XC 2020 Yamaha YFZ450R |
||
|
04-06-2005, 10:41 PM
|
|
|
Registered
Join Date: Aug 2002
Location: Galivants Ferry, SC
Posts: 10,550
|
I would think AircraftSpruce and Specialty Co. could fix you up with a CHT or other ...aircraft-inspired gauges....
Wil
__________________
Wil Ferch 85 Carrera ( gone, but not forgotten ) |
||
|
04-07-2005, 03:40 AM
|
|
|
Registered
Join Date: May 2001
Location: Peoples Republic of Long Beach, NY
Posts: 21,140
|
CHT probe wire + +
The covering is about 6" 
__________________
Ronin LB '77 911s 2.7 PMO E 8.5 SSI Monty MSD JPI w x6 |
||
|
04-07-2005, 06:40 AM
|
|
|
