CHT Nirvana (cylinder head temperature) gauge/sender FAQ

Duncwarw · Samba Member Joined: August 25, 2003 Posts: 3094

Richard, you're an international star!

I told my friends in the UK and they're telling the French about it.
Imagine all those saved engines....

Smile

ratwell · Posted: Wed Feb 23, 2005 10:06 am Post subject:

jberger · Samba Member Joined: November 17, 2003 Posts: 2476

timmy74006 · Posted: Wed Feb 23, 2005 10:40 am Post subject:

Any idea where to get these in a 12mm diameter? Also, do you basically use the ring in place of the supplied crush washer?
Thanks
Tim

ratwell · Posted: Wed Feb 23, 2005 11:46 am Post subject:

timmy74006 · Posted: Wed Feb 23, 2005 12:10 pm Post subject:

Thanks again for your help. I will give them a try. I just placed an order for a set of 3 gauges to replace the existing ones. Found out they have a 2 year warranty on parts and labor. From what I've heard, the display is the first thing to go. The tech said even if it's out of warranty, they're inexpensive to fix. FYI. Also found out that the bus wire for the VDO CHT is 15', not including the sensor wire length.
Tim
71 passenger bus

ratwell · Posted: Wed Feb 23, 2005 12:15 pm Post subject:

timmy74006 · Posted: Wed Feb 23, 2005 12:31 pm Post subject:

Good info. Tin (Sn) melts at 449.47°F and interestingly enough, superconducts at 3.72°K or °C above absolute zero. Might have to melt the tin off with a small torch first before using. I do plan on using a custom length of type K thermocouple wire and the appropriate plug connectors as not to induce any additional cold junctions. Got to admit, you're full of good info. I don't think mounting depth will be a problem. I'm using 044 heads and the plug wells are pretty shallow. I'll probably notch the edge of the hole to keep the ring lug from turning.
Tim

ratwell · Posted: Wed Feb 23, 2005 12:49 pm Post subject:

timmy74006 · Posted: Wed Feb 23, 2005 1:24 pm Post subject:

Not at all my friend. I just hope I can be as helpful to others as my experience base grows.
Tim

shiningstar76 · Posted: Wed Mar 02, 2005 1:36 pm Post subject:

I just got my CHT gauge....what should be the temp range on a 1600 dp?
_________________
KK4NTP
96 Tacoma
86 4Runner
My bus caught on fire and is now on the other coast with someone who gave me money for it.

Volkswagenate · Posted: Thu Mar 03, 2005 9:48 pm Post subject:

How long did any of you who've gotten these gauges have to wait on shipping? I would like to have it before spring break in two weeks (i had the guage shipped to my school address) and i ordered prob a week and a half ago now. {am interested in what temperatures i should expect on my 1700 type 4 as well}

ratwell · Posted: Thu Mar 03, 2005 10:58 pm Post subject:

It took less than a week to get from SD to CA via UPS. I know two other who have had their gauges delivered from Dakota Digital quickly.

As for temps, these are my temps recorded when it was 55F outside:

MPH RPM CHT
50 2620 340F
55 2860 360F
60 3150 380F
65 3440 380F
70 3720 400F
75 4010 420F
_________________
'78 Westfalia CDN
'76 Doublecab
Read the Baywindow FAQ

DurocShark · Posted: Fri Mar 04, 2005 5:58 am Post subject:

ratwell · Posted: Fri Mar 04, 2005 9:21 am Post subject:

That's where it seems to level off for a moment. In general the faster you go, the hotter the engine runs...
_________________
'78 Westfalia CDN
'76 Doublecab
Read the Baywindow FAQ

Adventurewagen · Posted: Mon Mar 28, 2005 12:33 pm Post subject:

Im saving my cash for the temp gauge right now and was looking at new k-type thermocouple wiring. Never knew it came in so many different specs.

Im not a mechanical engineer so I have really no idea on what makes a difference. Im sure the cheapest stuff probably works, but anybody know or have an opinion on some of the different types of wiring.

Ive done some more research and found a great site with Type K Thermocouple wire, check it out. Some of the pricing seems to be off for some of the wiring, instead of 1.50/ft like it says it prices out to like 8bucks a foot. Im figuring on anything with a max temp of at least 900 and maybe something default like 20 or 24 guage solid wire.

http://www.omega.com/ppt/pptsc.asp?ref=XC_K_TC_WIRE&Nav=temh06

so many things to choose from, I figure if Im gonna spend 110 bucks on a gauge I mine as well spend an extra few bucks on the wiring thats going to help make it read the right thing.
_________________
63 Gulf Blue Notch
71 Sierra Yellow Adventurewagen

ratwell · Posted: Mon Mar 28, 2005 1:55 pm Post subject:

Don't spend too much. Unless you can find it for less than $1/ft online just ask Dakota Digital to sell you a custom length for $25.
_________________
'78 Westfalia CDN
'76 Doublecab
Read the Baywindow FAQ

shiningstar76 · Posted: Mon Mar 28, 2005 2:56 pm Post subject:

ratwell · Posted: Mon Mar 28, 2005 3:15 pm Post subject:

Correct. I have no idea what Type 1 temps are ideal.
_________________
'78 Westfalia CDN
'76 Doublecab
Read the Baywindow FAQ

pagjac · Posted: Thu Jun 09, 2005 11:32 am Post subject: Oil temp sensor location

Hi,
I read with great interest your posting on oil temp sender location. I want to tackle the job of installing the sender in the correct location you mentioned and I quote: "...the best place to mount one is right before the oil pump using the oil gallery plug behind the oil pickup tube".
Could you explain more on how to do that? Maybe by posting an image of the location on the engine with some instructions on how to remove the plug and if the tapping of the hole is at all possible without removing the engine?

Thanks in advance

Jacques Pagé 1981 aircooled RIVIERA


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CHT Nirvana (cylinder head temperature) gauge/sender FAQ
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