Will wrong valves seals do this?
Thread Starter
Joined: Feb 2003
Posts: 3,937
Likes: 0
From: Kansas City, Mo
Broke when driving, they have around 400 miles on them. They are cnc ported LS6 heads. I was told this happend because I used a factory valve seal.
Would be impossible for seals to do that....looks like the geometry was wrong....spring bind possibly...but no way valve seals! Looks like the port work may have weakend the area that broke.
TECH Senior Member
iTrader: (10)
Joined: May 2005
Posts: 5,353
Likes: 2
From: Bossier city,LA barksdale AFB
Valve seal have nothing to do with that! It's all on the heads being ported to much and loosing the strength its ALU you can only go so far! I have seen people use stock valve seals with Patriot and prc dual valve springs and that didnt happen! I was going to get PRC heads but ill just save up more for some Trickflows 
Last edited by SIC LSX; May 6, 2008 at 07:40 PM.
Thread Starter
Joined: Feb 2003
Posts: 3,937
Likes: 0
From: Kansas City, Mo
What you guys are saying is what 3 people told me after I got off the phone with the sponsor. Im a service advisor, and first thing I did was ask the heavy line guy and he laughed.
Trending Topics
Yup the fellas are right. It was either the porting that caused the structure to fail or an issue in combination with that, springs, pushrod length, etc. What moron told you that?! He needs to be slapped. No possible, incorrect sized valve stem seals will just make the engine smoke. Lol. I gotta show my dad this one.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo Thread Starter
Joined: Feb 2003
Posts: 3,937
Likes: 0
From: Kansas City, Mo
They said that their dual spring kit comes with special valve seals/seats. In this case the heads already came with these seals on them new from the shop. I just figured they were good to go.
Thread Starter
Joined: Feb 2003
Posts: 3,937
Likes: 0
From: Kansas City, Mo
At this point I dont think I should have to pay $800 like they want. I can understand if I did forget to install something but these were already on the heads from TSP. I ran stock valve seals on my last set and had almost 9k miles on them with this MS4 in the car. I ordered a new set of valve springs today to throw on a stock set of heads just to get my car going again.
Thread Starter
Joined: Feb 2003
Posts: 3,937
Likes: 0
From: Kansas City, Mo
So I should not run the stock valve seals? I have never had one issue in doing this. It is okay to run with the factory seals though right?
I can tell you this, when i bought my Patriot golds springs they came with new valve seals, they are the same seal as the factory seals. The seals didn't break the heads anyway. I will bet anything that they were ported too thin in the intake runners. Put dual springs on with a head that is ported too thin and it's gunna break.
Thread Starter
Joined: Feb 2003
Posts: 3,937
Likes: 0
From: Kansas City, Mo
Arent you now another of about 5,000 people that TSP's **** has done this to people. How in the **** could TSP say it's the wrong valve seals when its the same thing that has happend to 5,000 other peoples heads and now you. Thats pretty hilarious if you ask me. TSP needs to backup their product for you like they have done to tons of other people with the same problem
It could be caused by the wrong seals if the retainer was hitting the seal and causing it to bind. Or if the inner spring was stuck on the seal and causing coil bind due to the larger diameter of the stock seal. It looks like there is a fair amount of material left in the port roof. Some of the older heads I saw pictures of were half that thick where they broke off. I'm not saying it can't be a head problem, just trying to give you a few things to check to help eliminate some possibilities. I would also like to know if the heads are milled, what length pushrods, what head gaskets you're using, and if you have flycut the pistons. And I would like to see a side by side comparison pic of the heads so I can see what you mean by the port differences. They should definitely look identical.
TECH Fanatic
Joined: Jul 2006
Posts: 1,732
Likes: 0
From: K.C.
id really like to know, how in the hell a valve seal has anything to do with a head destroying itself.
oh, thats right.
NOTHING!!!!
i can see putting in valve seals when you have an issue with oil consumption. not when you are spinning the motor an asshair past the factory rpm limit.
::shrugs::
id say more, but knowing my luck id get banned from here too
oh, thats right.
NOTHING!!!!
i can see putting in valve seals when you have an issue with oil consumption. not when you are spinning the motor an asshair past the factory rpm limit.
::shrugs::
id say more, but knowing my luck id get banned from here too
Thread Starter
Joined: Feb 2003
Posts: 3,937
Likes: 0
From: Kansas City, Mo
Wow, I hate hearing this stuff. I have had nothing but good things to say about TSP. I can count almost 4k in reciepts I have with them. I think I have installed 20k worth of TSP parts on other peoples over the last two years. The only one who had any problems with them was my friend Tim, his heads were messed up. When he needed his car done I put my own TSP heads on his car because he could not wait on tsp to send him the replacements. I dont drive my car everyday and already had it apart so I told Tim id take his heads once they come in since they were the same thing. The heads I got are the ones im having problems with. Texas-speed would not cover them 100% since im not the original buyer. I dont see why it makes any difference because if they look in their history they will see I bought a set of LS6 heads anyways which ended up on his car. I was just helping a friend out by getting his car on the road faster.
Thread Starter
Joined: Feb 2003
Posts: 3,937
Likes: 0
From: Kansas City, Mo
It could be caused by the wrong seals if the retainer was hitting the seal and causing it to bind. Or if the inner spring was stuck on the seal and causing coil bind due to the larger diameter of the stock seal. It looks like there is a fair amount of material left in the port roof. Some of the older heads I saw pictures of were half that thick where they broke off. I'm not saying it can't be a head problem, just trying to give you a few things to check to help eliminate some possibilities. I would also like to know if the heads are milled, what length pushrods, what head gaskets you're using, and if you have flycut the pistons. And I would like to see a side by side comparison pic of the heads so I can see what you mean by the port differences. They should definitely look identical.
IT is possible for the stock diameter valve seals to snag the inner spring. A friend of mine installed dual springs with the stock seals and all but one inner spring broke. That's why the dual spring kits come with the smaller diameter viton seals.