Is THIS normal?!?!
Thread Starter
TECH Addict
iTrader: (24)
Joined: May 2005
Posts: 2,045
Likes: 4
From: Fort Worth, TX
Is THIS normal?!?! I'm about to take off the heads, and noticed that the top 5 head studs nuts are not seated all the way down the stud, there is about 3-4 threads I believe exposed. I checked the torque and they're right at 22-25lbs. I'm wondering if there is not the right head studs in this motor right now. All the rest of the nuts on the ARP head studs are completely seated on the studs... This is an LS2 2004+ block, and those are the studs that i purchased for this build....so is this really normal?
Thanks!
Adrian
Thanks!
Adrian
Yeah, the picture helps. I guess if you get the proper torque on the stud nuts, then it should work for you. I don't know if that is normal though. It seems strange that only 5 of them do it.
Thread Starter
TECH Addict
iTrader: (24)
Joined: May 2005
Posts: 2,045
Likes: 4
From: Fort Worth, TX
yes my heads were leaking, thats why im concerned that these studs are too short, although, they really don't provide any clamping force, so I dunno. The motor was put together for me from a sponsor here, so i just put the motor in, i didn't double check to make sure the heads were put on properly, i assumed they would have been.
Is this ok? Or is this really something that I should be concerned over, and do I need to order different studs for the top 5 on each head?
Someone who DEFINITELY knows, can you please chime in? These are GM LS7 heads btw, so i dunno if that portion where the nut goes is taller than a LS2 head..
The cometic gaskets were leaking in between each bore from what it looks like.
TIA.
Adrian
Is this ok? Or is this really something that I should be concerned over, and do I need to order different studs for the top 5 on each head?
Someone who DEFINITELY knows, can you please chime in? These are GM LS7 heads btw, so i dunno if that portion where the nut goes is taller than a LS2 head..
The cometic gaskets were leaking in between each bore from what it looks like.
TIA.
Adrian
Well if its leaking, you are going to have to pull off the head. While its off you'll have a chance to measure the stud lengths out of the block to see if they are all the same. Once you pull off the head and remove the gasket, you can put the head back in place and look to see if the head is seating evenly and flat. Doing those things should give you some insight as to what is causing the leak.
Trending Topics
Thread Starter
TECH Addict
iTrader: (24)
Joined: May 2005
Posts: 2,045
Likes: 4
From: Fort Worth, TX
I've already got the heads off, the heads seat flat, and all of those top studs are the same length.
There appeared to be spots of the gasket that did not seal, BUT, there is a main stud stuck in the deck, I mean, its so binded up that i've broken a bit trying to get it out... Is it possible that if it is in too tight, that it could crack the block? I'd really like to get this out and pressure test the hole, but I can't get it out! Any suggestions? Should I just leave it in and it'll be fine? This sucks
There appeared to be spots of the gasket that did not seal, BUT, there is a main stud stuck in the deck, I mean, its so binded up that i've broken a bit trying to get it out... Is it possible that if it is in too tight, that it could crack the block? I'd really like to get this out and pressure test the hole, but I can't get it out! Any suggestions? Should I just leave it in and it'll be fine? This sucks
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
TECH Apprentice
Joined: Sep 2006
Posts: 328
Likes: 3
The stud goes into aluminum, which expands much faster with heat than the stud. Just heat the aluminum around the stud with a torch (propane, or MAP gas will be plenty) before you try to loosen the stud again.
Thread Starter
TECH Addict
iTrader: (24)
Joined: May 2005
Posts: 2,045
Likes: 4
From: Fort Worth, TX
Thanks, thats what I plan on doing...
New issue though, and this is VERY disheartening, but on the drivers side of the motor, the pistons are kissing the head at the top of the piston....
I'm thinking that when I take the heads to a machine shop to have them cleaned up, i'll have them mill out like 10 thou in the area where the pistons are touching the head, of course i'll have that done on both heads.
I'm guessing the decks of the block aren't the same height....mannn.... this is getting old fast.
New issue though, and this is VERY disheartening, but on the drivers side of the motor, the pistons are kissing the head at the top of the piston....
I'm thinking that when I take the heads to a machine shop to have them cleaned up, i'll have them mill out like 10 thou in the area where the pistons are touching the head, of course i'll have that done on both heads.
I'm guessing the decks of the block aren't the same height....mannn.... this is getting old fast.
Thanks, thats what I plan on doing...
New issue though, and this is VERY disheartening, but on the drivers side of the motor, the pistons are kissing the head at the top of the piston....
I'm thinking that when I take the heads to a machine shop to have them cleaned up, i'll have them mill out like 10 thou in the area where the pistons are touching the head, of course i'll have that done on both heads.
I'm guessing the decks of the block aren't the same height....mannn.... this is getting old fast.
New issue though, and this is VERY disheartening, but on the drivers side of the motor, the pistons are kissing the head at the top of the piston....
I'm thinking that when I take the heads to a machine shop to have them cleaned up, i'll have them mill out like 10 thou in the area where the pistons are touching the head, of course i'll have that done on both heads.
I'm guessing the decks of the block aren't the same height....mannn.... this is getting old fast.
Thread Starter
TECH Addict
iTrader: (24)
Joined: May 2005
Posts: 2,045
Likes: 4
From: Fort Worth, TX
Well, since it is only on one side, it is most likely a deck height difference. If you can think of anything else it could be, please post up your ideas, but otherwise, I don't see how it would even be possible to be anything BUT the deck height, esp since its all only on one side. I guess its possible that the gaskets I were sent weren't both the same thickness, that could also be a possibility.
But just to be safe, i'll have them mill just a slight amount from the flat part the chamber, and put it back together, i'm sure it'll be fine.
But just to be safe, i'll have them mill just a slight amount from the flat part the chamber, and put it back together, i'm sure it'll be fine.
Is this a home build or something?
Not trying to dis anyone, just trying to find soome facts out about the build.
Those studs up top do not do anything really as stated but it is very interesting that they are to short. What kit did you use?
Not trying to dis anyone, just trying to find soome facts out about the build.
Those studs up top do not do anything really as stated but it is very interesting that they are to short. What kit did you use?
