head gasket bummer
Originally Posted by kp
Must be that time of year lol, I was smelling some coolent and it would spit a little out of the radiator cap on a pass evey once in a while so I figured the head gaskets were leaking a little. I could even see a little carbon on the outside by #6 so i figured it was time.. Thats a little over a 100 passes this year so I guess thats not too bad. Car still ran fine and never really used any coolant or ran hot..
Sure looks like it 
Originally Posted by kp
Sunoco 104 unleaded, its loaded with that MMT crap like torco
I think Im going with VP this next round. On antoher note Im going to recheck my head studs now. I wondered if they backed off at all. 
Mine didnt back off at all, I torqued them at 75 and they were still at 75, takes me only a few hours to swap the head gaskets. Just another thing to do after 100 passes I guess..
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Thread Starter
Joined: Nov 2001
Posts: 10,018
Likes: 51
From: Virginia
i used the moly lube but there was some oil in the threads from dissasembly so i dunno what you call it
kp, what gaskets? the mls leaves a little bit of silicone on each part that i like to clean carefully, i dont see any of that on your head
also i tried to order these gaskets friday afternoon, so no dealership would have them for me the next day.. speed saturday delivered them.
i figure i only had 102-105 octane effectively on the dyno (if was all mixed completely) i think thats what happened to mine. that was at 22psi and like 15-16* timing. i've allready backed the timing off a few, going to add some fuel too... and more octane next time for certain
kp, what gaskets? the mls leaves a little bit of silicone on each part that i like to clean carefully, i dont see any of that on your head
also i tried to order these gaskets friday afternoon, so no dealership would have them for me the next day.. speed saturday delivered them.
i figure i only had 102-105 octane effectively on the dyno (if was all mixed completely) i think thats what happened to mine. that was at 22psi and like 15-16* timing. i've allready backed the timing off a few, going to add some fuel too... and more octane next time for certain
Originally Posted by MIGHTYMOUSE
i used the moly lube but there was some oil in the threads from dissasembly so i dunno what you call it
kp, what gaskets? the mls leaves a little bit of silicone on each part that i like to clean carefully, i dont see any of that on your head
also i tried to order these gaskets friday afternoon, so no dealership would have them for me the next day.. speed saturday delivered them.
i figure i only had 102-105 octane effectively on the dyno (if was all mixed completely) i think thats what happened to mine. that was at 22psi and like 15-16* timing. i've allready backed the timing off a few, going to add some fuel too... and more octane next time for certain
kp, what gaskets? the mls leaves a little bit of silicone on each part that i like to clean carefully, i dont see any of that on your head
also i tried to order these gaskets friday afternoon, so no dealership would have them for me the next day.. speed saturday delivered them.
i figure i only had 102-105 octane effectively on the dyno (if was all mixed completely) i think thats what happened to mine. that was at 22psi and like 15-16* timing. i've allready backed the timing off a few, going to add some fuel too... and more octane next time for certain
I had 6.0 GM MLS, I already peeled off most the black silicone like stuff before I took the pic.
Vince,
I run 104 with 16-17 degrees of timing but only like 14psi, but I do keep it fairly lean and slightly higher compression then most. I dont have the luxury of just cranking up the boost so I have to run a little closer to the edge to make the power. I'm going to put the BS3 in and just run better gas from now on, in my case it was most likey detonation, I can admiti it
People dont realize how much power these little motors put out and how poor the head bold arrangement is, a n/a big block in a 3450lb car that runs mid 9s would need a set of valve springs every 100 passes probably and those cost way more then a pair of head gaskets
I am doing myy build right now too... Going to go with 90#'s sense I have a Iron block and L19 headstuds. GM MLS gaskets....
What is the advantage of the copper spray that you used?
Jared
What is the advantage of the copper spray that you used?
Jared
Thread Starter
Joined: Nov 2001
Posts: 10,018
Likes: 51
From: Virginia
Originally Posted by longrange4u
MM you still running your dual 255's intank? What size injectors are you running now?
i have a big long list called 'modifications' at the bottom of my homepage listed in my signature
i dunno the science behind the copper spray, just one thing to try
Originally Posted by MIGHTYMOUSE
i have a big long list called 'modifications' at the bottom of my homepage listed in my signature
Wow thanks... 
Have you experienced any leanout conditions that could have contributed to lifting them some?
Last edited by longrange4u; Sep 11, 2006 at 12:23 PM.
You guy's definitely got the use out of your gaskets People don't realize that high HP cars need maintanance like this.If it was easy to have a big hp car everybody would have one
We pull our heads after every race weekend to check them.That is only a 800hp blower car.
People don't realize that high HP cars need maintanance like this.If it was easy to have a big hp car everybody would have one We pull our heads after every race weekend to check them.That is only a 800hp blower car.
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Originally Posted by kp
People dont realize how much power these little motors put out and how poor the head bold arrangement is, a n/a big block in a 3450lb car that runs mid 9s would need a set of valve springs every 100 passes probably and those cost way more then a pair of head gaskets
How does the head bolt arrangement be any worse than their setups ?
Some of those can be making as much as 400bhp per litre.
At circa 200bhp per litre, head gasket failure isnt really even a concern with a half decent setup. Maybe once around 300bhp/litre they are starting to get pushed a little.
Originally Posted by stevieturbo
Compared to a lot of 4 cylinder cars, HP per cubic inch, or HP per litre isnt anything that special.
How does the head bolt arrangement be any worse than their setups ?
Some of those can be making as much as 400bhp per litre.
At circa 200bhp per litre, head gasket failure isnt really even a concern with a half decent setup. Maybe once around 300bhp/litre they are starting to get pushed a little.
How does the head bolt arrangement be any worse than their setups ?
Some of those can be making as much as 400bhp per litre.
At circa 200bhp per litre, head gasket failure isnt really even a concern with a half decent setup. Maybe once around 300bhp/litre they are starting to get pushed a little.
Only four small bolts around a pretty good sized diameter cylinder is not the most ideal setup even on a four cylinder. It really all depends on the design. Also depends on the thickness of the heads, size of the bolts, valve placement, flame front travel etc etc etc.Cant compare apples to oranges at all in this case.
Originally Posted by Slowhawk
You guy's definitely got the use out of your gaskets People don't realize that high HP cars need maintanance like this.If it was easy to have a big hp car everybody would have one
We pull our heads after every race weekend to check them.That is only a 800hp blower car.
People don't realize that high HP cars need maintanance like this.If it was easy to have a big hp car everybody would have one We pull our heads after every race weekend to check them.That is only a 800hp blower car.
I'm not really complaining, I'm hard on the car since I just can reach over and crank a **** if I want 100 more HP - have to work things a little harder for it..