First Start! Success!

[David_L]

I waited till Sunday when my son could come over to try my first start. I spent a little time tying up lose wiring and making sure everything was clear. We rolled it out of the garage for the first time, blocked the wheels and tried it out! As you can see it was successful!


https://youtu.be/Alf_RC97-D8

I do have a short list of issues I need to resolve.

1. Fan didn't come on automatically once the temp was at 180. But I was able to use my manual fan switch on the dash to turn it on, so that's good. This may be related to the other issue. My temp gauge was reading about 28 degrees less then the temp in the sniper. The sniper was saying the fan was on even with the manual switch off..

I'm thinking this may be due to using 2 different sensors, one for the Sniper on the front DS of the manifold and the other one is on the PS but in a stem with a heater hose nipple. Could this cause discrepancy?

Could I just move the gauge feed wire to use the sniper sensor?

2. Voltmeter not working. Should be an easy fix as it should only require a + and - feed. The voltage on the sniper monitor was fine.

Here's a picture of the temp sensors. DS is for the sniper and is just to the right of the distributer partly hidden in picture and PS is for the gauge and it's on the back side of that brass fitting.

https://thefactoryfiveforum.com/attachment.php?attachmentid=185420&d=1685992863

[egchewy79]

congrats!
if the sniper is saying the fan should be on, but it's not turning on, you'll need to look for something that's not wired correctly.
there can be a discrepancy in the intake on temps depending on where you have the senders.
for the EFI temp sensor, I'd put it at the warmest part of the intake which is right before the waterneck/thermostat.

you could also argue putting that sender at the bottom of the radiator since you don't need the fan to kick in until the water temp returning to the engine is still hot after the radiator.

[GoDadGo]

Congratulations From The Dark Side!

[David_L]

congrats!
if the sniper is saying the fan should be on, but it's not turning on, you'll need to look for something that's not wired correctly.
there can be a discrepancy in the intake on temps depending on where you have the senders.
for the EFI temp sensor, I'd put it at the warmest part of the intake which is right before the waterneck/thermostat.

you could also argue putting that sender at the bottom of the radiator since you don't need the fan to kick in until the water temp returning to the engine is still hot after the radiator.

Thanks for the input! Started working on it today. I found out I wired the RF fan therm wire to the light green fan 2 wire.. I must be color blind! Would this cause the fan not to trigger?

The volt gauge.. well I forgot to ground it! Lol

Still not sure about temperature difference between the gauge and sniper yet. Will let it warm up again. Maybe getting the coolent system purged of air might help.