Building "Nightmare" (78 GMC Jimmy)

[6872xtc]

Well, then we know that you are human like the rest of us!!!!!



But in reality, that is some information that you want to know. Those are the real numbers, not just initial setting.
You can get more info when the neighbors don't mind!

 

[Fastereddie]

I back you up, prior to this shit my big block NEVER went over 190. Even in 100 degree weather.

Prior to what? Adding a condenser right?

 

[the_blaze]

Prior to what? Adding a condenser right?

Yup. Seems simple, rip out the condenser right? I'm in it to much money to just say f it. And from the factory this should have worked.

I'm debating just doing the water pump. It has a lifetime warranty so I'm really only out fluids and time...

 

[the_blaze]

Ok so I let the truck idle until it was over temp, I checked my heater blows nice and hot. I ran it for like 10 mins and it stayed hot if not getting hotter, I think the pump is fine. I bumped my afrs and am running to a junk yard to look for a factory condenser

 

[the_blaze]

I'll check timing in a bit

 

[the_blaze]

I just ran to the junk yard, a factory condenser is so much less restrictive! Omg... I'm 99% sure I found my issue.. fml

 

[the_blaze]

Yeah wow

 

[Fastereddie]

Very interesting... I have a new parallel flow cond in mine too. Curious if the old tube type helps.

 

[Fastereddie]

Very interesting... I happen to have that new style parallel flow cond in mine too.

 

[the_blaze]

Well that helped it didn't fix it but it helped. 94 degrees out. I went over the point of the mountain, the windstar fans hit 211 and the mechanical hit 203. No ac, yesterday I was hitting 220+ no ac going over the point.

Windstars sit at 200 ish city, the mechanical hit 203 in the city.
Again no ac. Hot as hell out.

Ok idea time.... what if I run the mechanical fan and add a 14" push fan to the front for city driving?
Id shut it off on the freeway, would that cause a restriction?

 

[kgblazerfive]

Pusher should work fine. I would leave the Windstars in. Is that running both fans on the Windstars?

 

[the_blaze]

Pusher should work fine. I would leave the Windstars in. Is that running both fans on the Windstars?

I'm bringing the windstars with me but the mechanical runs so much cooler on the freeway ! I was cruising (not climbing) around 195 -200 vs 205-210

The mechanical wins the freeway challenge so I'm hoping with a pusher my truck will be ok going slow.

 

[the_blaze]

Yes running both fans and no ac.

 

[the_blaze]

Btw.... it's happening @72gmck5 @Drummingpeke

 

[the_blaze]

I searched high and low and found the best pusher fan i could find befor BB17, its a 14" and pushes 2200 cfm, that little sucker should assist with city driving and offroading.
seeing the temps drop by 10-15 degrees and stabilizing vs climbing i feel confident that the stupid condenser was a lot of my issue, switching to the stock style helped, i think having no condenser at all and id easly be back at the 180 to 190 range,

I have been doing some reading and some say going to a 3 core radiator may be better for those running ac, appearently asking a fan to pull air through 4.5-5" of fins is asking a lot and you get heat soak befor you hit the back of the raditaor, i guess a thinner radiator allows air to move quicker helping it cool better... anyways food for thought i will mess with ideas over the next year and see what happens.

 

[the_blaze]

If anyone wants to play copilot/spotter for me on friday (hells revenge) and Saturdays big adventure my passanger seat is open. I keep the pretty truck off the hairy stuff but still have fun.

 

[72gmck5]

Try posting in the BB thread dood. I bet you'll get a better response

 

[the_blaze]

Try posting in the BB thread dood. I bet you'll get a better response

I don't want strangers with cooties

 

[Bent77]

I don't want strangers with cooties

Follow me, I've never scratched a fender

 

[the_blaze]

Follow me, I've never scratched a fender

Didn't you jack up a tailgate??