Your an absolute idiot if you think this will prevent headlift. L19, good headgasket, problem solved.

/story

 

So i suppose you tried this mod and suffered a failure?
Have you ever had a motor fail? If so what caused it?

 

Stock block spun a bearing. Built it back with factory DE headgaskets and L17s, help 19psi from greddys for over a year with zero problems. Sold kit for bigger turbos and put HR gaskets and L19s in for safety. Havent started it yet.

 

I don't think anyone with properly installed and torqued L19s has lifted the heads. We've got numerous 800+whp builds around here and NO ONE does this BS head strengthening "mod".

 

this mod at the time of the unkown was a cheap and easy insurance but with time I think we all realized it really was no doing anything

 

Good luck on your next venture. Bigger turbos means more boost. I can only hope you don't experience any headlift issues.
I know I don't.

 

I have zero worries about headlift.

 

Randy, there is plenty of current data, and builds well over 1000whp that are perfecrtly fine with L19s...honestly even L17s shoudl even be fine for your build with a solid tune...
Dont fall for this old hype which is all that this thread is...OLD.....its an mod not needed.

No reason to keep putting more "factors" into your engine that could go wrong just for the heck of aftermarket if you already have a solid solution about it or the stock part if perfectly capable off. NO need to fearmonger on the aluminum fact of the core(s), thats who sleeves were wrongly suggested for alot of builds at just 600whp, and how 1/2 studs were sold....

 

Take a look at these babies




I have yet to get my heads off and see my issue but I think a sleeve dropped opposed to the head lifting. I hope to have time on Friday to get my heads off, if it was lift they didn't help

 

Sylvan, what head studs do you have?

 

I see your problem...you're missing an exhaust cam!

 

Great! Someone with actual field feedback. Looking forward to hear about your results. Good Luck.
I hope in your case Sylvan the mod failed and it was headlift because at least then the damage might be much less than re-doing the block. Replacing a head gasket is far less labor and $$$ to repair than the entire core.

Edit... BTW what boost were you running when this happened?

 

You know it's been almost 3 years since someone reported headlift issues around here right? That was right around the time builds started using L19 studs.

Boost pressure is irrelevant. Cylinder pressure and boost pressure are not necessarily directly correlated. I move more air now @ 13.5psi with the addition of my Cosworth intake manifold than I did @ 15psi with my stock intake manifold.

 

Yo Tyler, he has 1/2" head studs..and sleeves....gee cant imagine who build it?

.....if its headlifts....its because of bad machining on the studs....i wouldnt be surprised if its the sleeves...... but i mean there is the vipec for new ems and tune... someone coudl say its part of it....but again 3years no HEADLIGHT ISSUES on properly put together engines, ever since L19s pretty much...if someone is experiencing headlift this days then there is something else to look for that to take a shops excuse making and blaming other parts or saying they need other mods.
This is the whole point Randy, if you need it then something else is going on, cuase you should simply not experience any of it(headlift)! Of course you are free to do as you want but...dont be naive not to see our point here.

 

I was running 19psi i am flowing a fair amount of air I have a 3.8L with cosworth intake, JWT C2 cams, 1mm oversize exhaust valves and a port and polish with JWT 850bbs. 1/2"headstuds and cometic gaskets the perfect recipe for issues.

I am not sure why the ViPEC EMS would come up when discussing head lift/sleeve drop issues. I am not sure how the EMS attributes to a mechanical failure. ViPEC has individual cylinder knock detection and the tuner was listening with a "knock box" no detonation was seen on the logs or heard. It happened at 4500rpm 19psi i was making about 526ft/lbs and 500whp on pump gas no meth.

http://www.theknockbox.com.au/compon...page/Itemid,1/

Aside from detonation I am not sure how the ViPEC would be in the culprit but then i guess guys were saying it was the ViPEC when Cass spun rod bearings.

Anyway i wont know much till i do the tear down on Friday, hopefully I have time to get the heads off. i will update my fail thread when i know more.

 

**** i should have posted these pictures earlier If someone spotted that earlier It would have saved me from pulling my engine out That picture was taken when i was swapping out the S1 to C2s i couldn't find any other pictures that showed the additional studs/bolts.

 

You like the C2s? How the idle and drivability around town?

 

I got less than mile of street driving on them so i can't say for sure

 

Call me crazy, but I think its the combo of 1/2 headstuds and sleeves trashing these motors. If it had factory sized L19s I believe it would still be running strong. Or just blame the 1/2 studs all together. With L19s available there is really no need to take the risk of drilling out the block for bigger studs.

 

well its starting to add up..maybe pure coincidence.......nahhhhhh