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-Just purchased a basic set from Summit for the ole girl and considering the water temp hook up to intake.
-I would like to also keep the OEM sender so the dash gauge will also read.
-Have any of you done this with the two senders?
-Pics of the pluming and size adapter if you don’t mind.
-I have a Edelbrock 390 Performer intake.
Thanks,
With the mechanical temp sensor elevated in that tee I would assume the gauge will read a little low. Also that will make an air trap; crack the mechanical sensor when system is under pressure to bleed out the trapped air. I much prefer old truck plumbing to house plumbing 😊
With the mechanical temp sensor elevated in that tee I would assume the gauge will read a little low.
Correct. I tried that setup years ago and it did not work very good, the sending units need to be in the flow. At least thats what I was told. It does make sense.
With the mechanical temp sensor elevated in that tee I would assume the gauge will read a little low. Also that will make an air trap; crack the mechanical sensor when system is under pressure to bleed out the trapped air. I much prefer old truck plumbing to house plumbing 😊
Originally Posted by robertrpeak
Correct. I tried that setup years ago and it did not work very good, the sending units need to be in the flow. At least thats what I was told. It does make sense.
Thanks, didn't even think about that. I was just wanting the OEM gauge to work as well.
Guess I'll be changing it out.
I have an Edelbrock intake too. I put the mechanical gauge setup in the port where your tee is installed. Just need the correct adapter from intake pipe thread to sending unit thread with tapered seat. I have an aftermarket water neck as well which has a pipe fitting opening where I installed the stock electrical sending unit so the stock gauge would work. Both gauges seem to agree pretty well. Although with my set up, the stock unit reads temp on the radiator side of thermostat and mechanical is reading on engine side - thus they do not match well unless thermostat is open. As a side effect - I always know what the t-stat is doing. The pipe dope/sealant stuff is not needed on the mechanical sending unit; it actually seals by bevel - not by threads. It may also be detrimental for the stock sending unit - I may be wrong, but I think it may interfere with grounding through the body of the sending unit.
I have an aftermarket water neck as well which has a pipe fitting opening where I installed the stock electrical sending unit so the stock gauge would work.
I must really be tired, I should have thought about that.
Both gauges seem to agree pretty well. Although with my set up, the stock unit reads temp on the radiator side of thermostat and mechanical is reading on engine side - thus they do not match well unless thermostat is open. As a side effect - I always know what the t-stat is doing.
Yes that is a great way to know if the T-Stat is working etc.
The pipe dope/sealant stuff is not needed on the mechanical sending unit; it actually seals by bevel - not by threads. It may also be detrimental for the stock sending unit - I may be wrong, but I think it may interfere with grounding through the body of the sending unit.
Yes I know the pipe tape sealant is not needed but I always use it (old school I guess) and never had a problem with grounding but I do understand your point.
Maybe I can find a new neck and replace the one I have now.
Thanks again guys, really appreciate it,
JB
