Best T-3 CHT Setup

[Cptn. Calzone]

Asking the wisdom of the T3 forum...which set up works best with t3 and which vendor Currently have VDO in SC and Westy eyeballing Dakota for more accurate readings as these things run hot...
_________________
71 westfalia
67 912 Porsche Quintilla
67 Single Cab aka my work horse

[Cptn. Calzone]

Nobody have any pros and cons on the T-3??
_________________
71 westfalia
67 912 Porsche Quintilla
67 Single Cab aka my work horse

[W1K1]

I've only ever has the VDO CHT gauge in mine.
I know where it normally runs at on the gauge, and it shows me when it's getting hotter.
that's okay for me.
It would be nice if ISP would do a CHT to go with their gauges so I don't have a black face in amongst my grey faces
_________________
http://www.thesamba.com/vw/archives/manuals/jim_martin_engine_build.php

1973 super
1965 squareback 1500E
1971 bay window westy- subi swap

[squaretobehip]

[squaretobehip]

Sorry, no plans to make a CHT gauge.
_________________
1963 Notchback - Ruby Red
1963 Squareback - Pearl White
1965 Squareback - Baltic Blue

Follow ISP West on:

Facebook - www.facebook.com/ispwest
Instagram - @ispwest - www.instagram.com/ispwest

[Multi69s]

My brother in law had a light aircraft shop, and he gave me a Westach unit, and I got the sender from Aircraft Spruce. The Westach unit is closer in operation to the VDO vs. the Dakota, but I just use it as a reference. For me the main concern is the sender. Since the VW stock head has a stubby thread sparkplug, I've seen people cross thread the head because the sender was not aligned with the hole. The pictures are of a Type 4 head, but the concept is the same. The first picture was what gave me the idea, the second is my head.

Like shown in the first picture, I notched my head for the sender to have a set location. I then drilled a couple of holes in the head, and used safety wire to hold the sender in position (the shrink wrap is to prevent chafing). Then being careful to not getting any under the sender, I applied JB Weld and installed a spark plug until the JB Weld cured. Now I don't have to worry about alignment issues when changing sparkplugs.
_________________
69 road Bug 2110
73 Squareback - 2L, T4, Automatic W/ AC
Gone, but many fond memories 69 Baja Bug 2010 - 5 Rib Bus Transaxle
Gone but not forgotten 72 Baja Bug 2010
My builds
T4 into Squareback http://www.thesamba.com/vw/forum/viewtopic.php?t=458944&highlight=
Auto Trans Rebuild http://www.thesamba.com/vw/forum/viewtopic.php?t=516066&highlight=
AC in Squareback https://www.thesamba.com/vw/forum/viewtopic.php?t=...highlight=

[Cptn. Calzone]

Now that is what I was looking for some type of intelligent better mouse trap then the ring on the plug which spins and fowls causes cross threading and cursing
_________________
71 westfalia
67 912 Porsche Quintilla
67 Single Cab aka my work horse

[raygreenwood]

In a couple of weeks I will have a full "how to" posted for this mod:

Yes...this is a type 4 head but this can just as easily be done on a type 1/3.

I will be making and selling the connectors or you can just build your own. I also have a connector made of 0.125" aluminum that just press fits in and needs no snap ring.

Yes this is a connector that does not take the place of the sealing gasket on teh spark plug so you can remove and install plugs without screwing with the gasket. Accuracy has been shown to be within about 2* of the normal version that replaces the gasket.

Ray

[W1K1]

well hell, that's a good idea Ray, and simple too

on a side note is there a good swap for the NGK DCPR6E, 12x3/4 reach in the 3 prong spark plugs ??
_________________
http://www.thesamba.com/vw/archives/manuals/jim_martin_engine_build.php

1973 super
1965 squareback 1500E
1971 bay window westy- subi swap

[Clatter]

The VDO CHT is NLA.
(Three TLAs in a row! )

Hoarders are hanging on to the last of them;
Get one if you can find it.



Here's what i tried on my black car;
https://www2.cip1.com/ProductDetails.asp?ProductCode=C10%2D310%2D901%2DT1

There's a bunch of details in my build thread..

They are a copy of the VDO made by Caerbont Automotive Instruments Ltd. in the UK.

I'd give this thing a letter grade of about a C or maybe a C-.
It did "work" (not sure how accurate) once i finally got the fecking thing installed.
Would be 'the facking thing' if they were Irish..

First of all, the sender ring does not have a plug-in connector between it and the gauge.
You have to either splice a connector into the wire or deal with disassembling the tin and extracting the sender at motor pull/stuff time.
It's not a two-wire deal like the VDO - this one has a braided co-ax sender wire, so splicing is tricky for a non-engineer wiring novice like me.
Because these operate at such a low voltage, it seemed that my splicing it would lead to inaccuracy.
Stripping the top tin off the motor in-situ will have to be part of my pull routine. PITA.
Obviously, nobody thought about the application here...

Secondly,
The wiring and connector at the gauge is super teeny tiny and fragile.
Wire is like 28 gauge or so..
When threading it up to the front of the car, the miniscule connector plug pulled apart on me.
They hadn't fully seated the pins.
It's some kind of standard AMP or Molex connector plug, and not really rugged enough for this 'severe duty' automotive application.
Kind of thing you would find on a circuit board contained in a case..
The real VDO has proper terminals on the back - one for each wire;
Far more appropriate, doesn't break when handled, stands up to vibration.

Because the wire pulled free from the connector on mine i e-mailed the mfr. for a wiring diagram and they sent it.
When i asked for the type of plug they used i got ignored.

Can't do the 'boiling water test' without stripping the top left tin from the motor.
Unless you know what it reads in boiling water i say don't even bother looking at it.
The VDO i have seen be 65' F off at 212 boiling water.
That means pulling the left carb and other stuff, so it likely won't happen.
Might also take the chance of splicing the sender wire..
Or beat the thing flat with a brick..

Might make me a YouTube video of me smashing the fecking thing flat with a brick..
_________________
Bus Motor Build

What’s That Noise?!?

[Max Welton]

Anybody tried one of the CHTs made for general aviation?

https://www.westach.com/cht-gauges

https://www.aircraftspruce.com/menus/in/chtgauges.html

Max
_________________
1967 Type-3 Fastback
Under the Knife https://shoptalkforums.com/viewtopic.php?f=24&t=151582
Home Stretch https://www.thesamba.com/vw/forum/viewtopic.php?t=767836

[Max Welton]

The Micro 1000 CHT is temperature compensated and reasonably priced.

https://www.aircraftspruce.com/menus/in/chtgauges_micro1000.html

Max
_________________
1967 Type-3 Fastback
Under the Knife https://shoptalkforums.com/viewtopic.php?f=24&t=151582
Home Stretch https://www.thesamba.com/vw/forum/viewtopic.php?t=767836

[Multi69s]

I am using the Westach P/N 10-01235, and I am happy with it, especially since it was free. The down side to aviation gauges is that the back lighting is almost nonexistent. Since plane don't have headlights for navigation, the pilot can not be flooded with light from the gauges.
_________________
69 road Bug 2110
73 Squareback - 2L, T4, Automatic W/ AC
Gone, but many fond memories 69 Baja Bug 2010 - 5 Rib Bus Transaxle
Gone but not forgotten 72 Baja Bug 2010
My builds
T4 into Squareback http://www.thesamba.com/vw/forum/viewtopic.php?t=458944&highlight=
Auto Trans Rebuild http://www.thesamba.com/vw/forum/viewtopic.php?t=516066&highlight=
AC in Squareback https://www.thesamba.com/vw/forum/viewtopic.php?t=...highlight=

[nogoodwithusernames]

There's a guy on the FB "Volkswagen Type 3 Swapmeet" selling CHT gauges that I used. Seems to be good quality and pretty accurate, claims it's temperature compensated but I haven't actually done any tests on it to verify accuracy or anything.
The light in the gauge could be brighter but that's a fairly minor issue.
_________________
71 Squareback, 1.7l T4 w/ crank trigger fuel and spark
(Conversion thread https://www.thesamba.com/vw/forum/viewtopic.php?t=732508&highlight= or https://shoptalkforums.com/viewtopic.php?f=1&t=151375&sid=f0542d44a322d290c29d6609fac7f215 )
74 914, 2.0L w/ D-Jet

-Derek