| Author |
Message |
r0adrun3r
Samba Member
Joined: May 27, 2017
Posts: 17
Location: West Midlands
|
 Posted: Wed Dec 04, 2019 10:48 am Post subject: 36 Hp Oil sump temperature sender |
 |
|
Wondered what are the options for adding a oil temp sender to my 36 hp.
Ive read that the thread is M18x1.5 and the ones sold by heritage are M14 x 1.5. Whats the best way to approach this ?
Also im running 6 volt |
|
| Back to top |
|
 |
Eric&Barb
Samba Member
Joined: September 19, 2004
Posts: 24764
Location: Olympia Wash Rinse & Repeat
|
| Posted: Wed Dec 04, 2019 12:27 pm Post subject: Re: 36 Hp Oil sump temperature sender |
|
|
Sump is not a good place for a sender. Wire is exposed to road debris pulling at it. Sump plate is bathed with cooler air and water splashed up by the rear wheels onto that area. Plus the oil flow down under the strainer is minimal as it is designed to be a collection area for metal particles.
Better place is the oil pressure relief valve. Sheltered and constant flow of of oil gets by the relief piston.
https://www.google.com/search?client=ubuntu&ch...p;oe=utf-8
You can run 12 volt gauge/s with a 6 to 12 volt inverter for about 5-10 dollars from Ebay.
_________________
In Stereo, Where Available! |
|
| Back to top |
|
|
r0adrun3r
Samba Member
Joined: May 27, 2017
Posts: 17
Location: West Midlands
|
| Posted: Wed Dec 04, 2019 1:32 pm Post subject: Re: 36 Hp Oil sump temperature sender |
|
|
| Eric&Barb wrote: |
Sump is not a good place for a sender. Wire is exposed to road debris pulling at it. Sump plate is bathed with cooler air and water splashed up by the rear wheels onto that area. Plus the oil flow down under the strainer is minimal as it is designed to be a collection area for metal particles.
Better place is the oil pressure relief valve. Sheltered and constant flow of of oil gets by the relief piston.
https://www.google.com/search?client=ubuntu&ch...p;oe=utf-8
You can run 12 volt gauge/s with a 6 to 12 volt inverter for about 5-10 dollars from Ebay. |
This makes sense to me and ive heard of people using inverters on senders. Only thing is arn't the 36hp relief plugs different thread and pitch to the later engines ?
Last edited by r0adrun3r on Wed Dec 04, 2019 1:35 pm; edited 1 time in total |
|
| Back to top |
|
|
Eric&Barb
Samba Member
Joined: September 19, 2004
Posts: 24764
Location: Olympia Wash Rinse & Repeat
|
| Posted: Wed Dec 04, 2019 4:01 pm Post subject: Re: 36 Hp Oil sump temperature sender |
|
|
| r0adrun3r wrote: |
| This makes sense to me and ive heard of people using inverters on senders. Only thing is arn't the 36hp relief plugs different thread and pitch to the later engines ? |
I just looked up the VW pressure relief plug and see the thread size and which engines it was used on in the original VW dealer type 1 parts manual here:
http://www.oacdp.org/
For now the type 1 part manual is available thru the "Upcoming" button at the top of that web site.
Use the "Full Index" below the "Quick Index", it is a lot easier to navigate thru.
It is in the 1st section that covers engine parts "Main Group 1: Engine". "1-62 Illustration" is the illustration you are looking for. The parts for that illustration are in the following page "1-68b" just before the next illustration.
The listing of the engines in the parts manuals ares in European BPH and not USA SAE. 30 BPH is the same as SAE 36 HP. Weird thing 25 BPH is same as 25 HP SAE!
Looks like you are right, they are different sizes, darn. Still the plug in the right rear of the 25-36 HP case for the sump pickup tube bore might be a good place to drill out and tap that for the oil pressure relief sender.
Other place that should work is the oil pump cover. Solder a brass bung to the cover and install the sender. Probably would not even need to drill thru the cover, and just rely on the heat coming thru the cover to the sender thru the threads. Just as the later FI head temp senders work.
Personally keep a meat or candy thermometer that has been tested in a pot of boiling water, to be used to cross check the senders in our later engines. Probe must be at least 6" (150mm) long (as long as the lower dipstick), and dial read out not much bigger than 1" (25mm) so it will clear the case that is so close to the dipstick tube.
Once cross tested, if off you could just then drill the pump cover to let oil to the sender.
_________________
In Stereo, Where Available! |
|
| Back to top |
|
|
|
