This is a d16a6 with vitara pistons and eagle rods, built head with a t3 .60/.63. ARP studs and y8 metal headgasket

I was just out tuning the car, went out for a brief drive to get some base numbers to work (no boost) and everything was cool

Then I richen'd it up under boost (like 11:1) and went for a boost run, held 10 psi fine (going to run 15)

Did 2 rips with some light driving around town and then I did a 2-3 pull and pretty much right when I shifted into 3rd and gave the gas ------- steam goes EVERYWHERE

Pull over to find the upper rad hose just split on me, right in the middle, 1" long like someone stabed it with a blade. I quickly grabbed some electrical tape and wraped it up tight as ---- about 10X around, buttoned down the hood and drove home, car ran semi hot with the gauge 4/5ths of the way up but I would just get up to speed (80km/h) and kill the motor and coast. Did this for the 2km trip home

Now my question. This rad hose might notta been new but it wasnt fucked, it was still stiff

I have arp's that are torqued down 3-5ft/lb's passed the recommendation

Is my head lifting or did something else happen? Im scared to even drive this ------- thing now, let alone at 15psi

 

just change the hose.

 

I"m not understanding how you think your head lifted? Like **** says change the hose, refill with coolant, bleed the system, then go tune/ drive your car.

 

hoses go nuts sometimes
happened to a buddy of mine and he was na

 

ive blown 3 or 4 hoses this season alone, they are all starting to rot out on me, they look good on the outside but are rotten in the inside badly. And yes, my headgasket was good.

 

yep nothing to be concerned about

 

probably just a bad hose.

 

Awesome, I ------- hope so

I jsut thought it was weird how it just kinda split like someone stabbed it after 10 min of driving

Made a nice ------- mess of my clean engine bay though

 

i hate having to clean up coolant. it stays in the frame for days and days and always has you worrying that you're leaking.

but no worries, replace that hose, top her off and bleed it out and boost away!

 

blown headgasket = too much timing

blown headgasket = huge airpackets in the system

blown headgasket = head/block are not flat at all(the point of a headgasket is to seal the slight imperfections)

Check all three. I'd bet $.50 that you are running too much ignition timing.