Or just use this

 

At least they didn't look like this. This was a g that got dropped off at my shop last night

 

So, just a quick update.

The car has been running solid out of boost; I’ve probably put another 6-7k miles on the car since I created the thread back in April of last year (wow, time flies...), no overheating, etc. Unfortunately, when I get into boost (as little as 9 psi) the coolant overflow fills up and spills over in a hurry (all the while coolant temps stay steady), so I’m pretty sure I still need to swap the ARP 2000 head studs out.

I’ve picked up a pair of HKS head gaskets and ARP L19 head studs and those’ll be going in in a few weeks hopefully. I’m planning on pulling the front core support off and having the heads pulled for the gaskets and studs.

 

Dynosty has a similarly designed HG for less cost, just FYI. Would love to see your old HG when you pull it. If there are focal points that appear melted, I would consider swapping to Evans coolant (expensive but may be worthwhile in the long run).

 

Yeah, I actually called Dynosty prior to buying the HKS gasket and they said that it's discontinued.

I'll make sure I have plenty of pics of the tear down, gaskets, etc. I'm also pretty sure I'm going to make the switch to Evans as well!

 

Evans is cheap insurance....youll spend 90 bucks on it vs like 20-30 on regular coolant. Is 60 bucks going to make or break a build?

The hard part is draining the block completely of all water/coolant.

Sorry to hear about your head lift issue.

 

Yeah, absolutely

Thanks, wish I had waited for ARP to just stock L19's again rather then jumping the gun and picking up 2000's, live and learn I guess...

Has anyone setup a coolant/radiator pressure sensor?

 

I have before but it is pretty boring, so I disconnected it. It goes up to 18 psi (my cap pressure) and just sits there. I guess if you are worried about a HG leak it might be worthwhile to monitor but I figure if you have a HG leak, you'll find out anyway. It's not like early warning is going to help you any (except to maybe tell you to stay out of boost).

 

Ah, I was hoping it would be a bit more informative and maybe be usable in the ProEFI Fault Manager to setup a condition where it would cut boost and switch to a low timing map if the coolant pressure exceeded a certain threshold.

 

you can def set a fault with conditions. Thats how mine is set. Low timing, gas AFR, off boost, everything to try to cool the cylinders

 

Is the fault conditional on coolant pressure?

 

^ probably, but if gas has already made it past the HG then it is too late at that point. If you use Evans I bet you will never have to worry about it again.

 

Right on, Evans is on the list for sure.

The only reason I'm so concerned about head lift reoccurring after I install L19 head studs is a local Z (Saad's) with a very similar setup (PowerLab single 35R, ProEFI 128, built short block, E85, etc.) ended up pushing coolant at 600whp w/L19 head studs. Only instance I'm aware of. I assumed that maybe he was running too much timing, not sure though...

 

Back when I had my block built, SP told me that vq35's start pushing coolant north of 600whp, and that's where they start to sleeve the block. Which is odd, because nobody else has said that. Saad's car is the first I've heard about that.


I think it comes down to the HG at that point (assuming l19's are torqued over 90)

 

Yeah, that's what Saad & Jason told me too... I'm really hoping L19 head studs, HKS head gaskets, and Evans water-less will keep the car running without any issues.

 

^ you will be fine. There is nothing magical about 600 whp. Plenty of open deck, non-sleeved VQ35de motors running 600-1000 whp with HKS headgaskets+L19. With water based coolant you have to be super careful about cylinder temps, vapor formation, etc and cannot flog the car on the dyno or on the track. With Evans this is much less of a concern.