Tommy42088

I'm really hoping to make that tune appointment this weekend, I'm gonna change the plugs again tomorrow just in case. I have them gapped at 25 but was thinking close the gap a little and hopefully get this sputter out with the tune, if it doesn't over heat that is

GMCGreg

.025 plug gap is working fine for me at 16lbs with stock coils . Hole in Stat helps with filling and allows a bit of flow around the Stat for earlier opening and stable temps

Tommy42088

I'll leave the gap at 25 then, if anything I'll have a spare set while it's being tuned if need be and I'll definitely consider drilling the hole. Only thing is if its not over heating anymore i might not want to mess with it

GMCGreg

I agree if it's working now , leave it , tune it and drill a hole another time when you have time or coolant has been drained for any reason. Good luck

Tommy42088

most definitely, I'll update how the tune goes

ddnspider

iTrader: (26)

The hole in the stat is because in some instances you can get an air pocket on the back side of the thermostat. It'll keep the stay from opening regardless of what happens. The small hole allows the air to bleed through the hole and let the thermostat see the temperature so it can open. Curious how it goes when you fill it back up and swap the cap. If it still overheats its worth doing a pressure test on the cooling system.

Dian

frankly i didt read all of this, but:

https://www.lislecorp.com/specialty-...-leak-detector

or go to a place that can do this. pretty sure the gasket is gone.

or check if you can feel a fast pressure buil up i the upper rad hose, after starting the car cold and reving engine a bit. squeeze hose, rad full, cap on. i woulndt rely on it.

Tommy42088

that's interesting, about what size bit do you usually drill the hole with? I'll update you this afternoon when I get home from work. I have to pick up some coolant then I'll give it a try. It did seem like air though after I messed with it for a while tho so I'm hopeful of that.

Tommy42088

I don't think it's the gaskets, it calmed down quit a bit after a let it run for a while. To the put when I could watch the inside of the funnel and see the water flowing from left to right inside the upper hose where the radiator supply is

ddnspider

iTrader: (26)

If you finally got it to burp i woulsnt touch it until you confirm if it overheats or not. Drill bit was something really small like a 1/32".

Tommy42088

most definitely, ill find out tonight.

GMCGreg

mine is 1/8 "

GMCGreg

Oh and clock that hole at or near 12 o'clock - better for bleeding/ passing air

Tommy42088

10-4 will do, thanks for the advice man. Yall have been alot of help

Pro Stock John

iTrader: (34)

Some of my buddies would drill a few holes, their primary concern was getting all the air out.

I don't run heat or a thermo stat, I run this.

Tommy42088

wow that's interesting, my only concern would be losing my heater if i went to big of a hole

Pro Stock John

iTrader: (34)

If you are running heat I think you'd want a thermostat. I wouldn't be shy about drilling more than one hole to help the system bleed, I think my buddies been drilling 4-5.

Tommy42088

most definitely run heat, I drive this truck on the street pretty often. Well I did b4 I started this nightmare of a turbo setup. Hopefully I'm finally getting it together

Tommy42088

Didn't run hot!!! Didn't even bubble gurgle any. Plugs will be here Thursday then off to tune

Tommy42088

I pulled the plugs yesterday, they weren't perfect but none if them looked bad enough to cause a hesitation. #4 was probably the worse. I also read some interesting articles on hp tuners last night with guys having similar problems and alot of them were tuning issues, Saturday we will get it hooked up to hp tuners and I'm curious to see if it's tune related or I possibly have a bad coil or something in the nature