I havent read all of the GTM thread , but in skimming through the crap . I have noticed people saying the HKS gaskets maybe at fault and are failing . Is this with sleeved motors only ? Or is the gaskets proving to be bad in all applications ?

I have the HKS gaskets trq.ed to 90lb's

 

Just those particular motors and some others. In my opinion you really don't need them. But they should be fine considering the install and how well it was.

 

hks HG are waste of $. not sure about the cause of failure, but why bother when stockers are more than sufficient? i was quoted 1k for these and was strongly recommended.

 

You were quoted $1K for HKS HG's?? They are about $300.

Booger, to answer your question, I havent seen or heard of a failure with the HKS gasket on an unsleeved block, and good studs (90+lb/ft). We have been using HKS, PE, and stock gaskets....all no failures so far.

 

We have used plenty of HKS gaskets in conjunction with L19 head studs with no failures thus far, sleeved and unsleeved. I can also say the same for Cometic.

While others may feel the oem head gasket is enough, I personally do not feel comfortable taking the chance with it on a high horsepower build (considering the cost of replacement if they do not hold up to the test of time...). Same would go for stock head bolts. These are items I would want to test on in-house motors thoroughly and rack up many miles before suggesting them to our customers.

 

I hope that HKS HG are good, because I have it and hope to see many many more miles out of it. I am on an unsleeved built motor.

 

Since we are on the subject of Headgaskets and Head studs.

What are your experiences with the method that Jim Wolf employs?
(using OEM HR Head gaskets and HR head bolts on DE motors)
I have attached the files so you can see what I'm referring to.


What is the consensus on ARP Head Studs needing to be re-torqued after X-amount of miles?(just trying to dismiss what is myth and what is truth)

I would like hear from both shops and technical people and peoples personal experience with either setup

 

There are some people testing the HR head studs and head gaskets for certain build applications. The limit is unknown as far as I know. They will be more budget oriented for those looking for the 500-550 whp mark. Over that is where the questions have been raised.

 

exactly


I've never read about hks hg failing. My goal is to be at high 500s and if there's a headgasket failure with stockers, something's wrong elsewhere.

 

If the HKS Head Gasket is just using better material but still the same design as the DE head gaskets wouldn't it still be flawed as far as its design.

I look at the HR Head Gasket and see more even distribution of coolant through the heads due to added channels which would eventually lead to better cooling of the motor specially when pushing our motors.

Combination of possible HR Head gasket and ARP studs?

 

What you're saying is correct but many have not had issues with the HKS.

 

1000+rwhp on HKS HG's and L19's. We use cometic's and HKS on our VQ builds and have had no issues on sleeved or unsleeved motors.

Chris

 

Just curious as to how many miles on say above 800 whp on the monster, also how many dyno runs and 1/4 passes to date?

Absolutely love the videos you guys make.

 

Probably have 30+ dyno pulls, and 10 or so passes on the car. i've also driven the car a few hundred miles on the street. Lot's more to put on it

Now the same setup on Tom's G35 we built, he's go about 4k miles on it

Thanks for the props too, we appreciate it!

 

2 of the 3 shops in the 1,000+whp VQ club have spoken.

I'm glad and reassured to hear this, since my build includes HKS head gaskets and L19 head studs.

 

^^^


10-4

 

I have the HKS (unsleeved) and L19's on my SP motor (as Chris mentioned)

see's 15psi on pump regularly, and 25psi on good gas (a bunch), and 30psi once in a while....gotta make sure the turbos still get there right

4K miles on the build.

No problems.

 

While its true no one is having issues then why are people doing the pathfinder cooling mod and bigger radiator if not cause of cooling issues. If a head gasket can contribute just like those mods to the cooling effect needed for the motor it should be seriously considered.

 

I am not pushing the crazy number that you guys are, but to date I have over 4500 miles and at least 150 dyno runs. 10 passes down the track and no "real" issues to date.

Craig

 

this thread is proof that HKS gaskets are good and not the culprit of engines failing... if thats where you were getting at booger