xssive

iTrader: (123)

Have you already tried pulling that mounting dowel out of the head? Anything more than minimal eefort would make me believe it was elevating the head and got forced in the head when being torqued. Also looking at the head picture, the area around the rear coolant passages looks alot worse than any other areas on the head going along with the dowel keeping it elevated.

Blake

<small>[ July 10, 2002, 10:04 PM: Message edited by: xssive ]</small>

Louis

iTrader: (7)

Chris, How do you figure that you are @ 12.0:1 CR? you dont have domes, and your CCs dont look that small. Just curious how you came up with that calculation.

Louis

Chris Johnson 00 T/A

Alright, I'm *100%* sure that it's not the dowel. I can push it ALL the way up inside the head.

Whats the deal with torque and such? The helms manual says 25ft/lbs, 90*'s, then 50*'s ( or something like that ) I'm sure it's WELLLL over 65 ft/lbs.

How should it be done?

Chris Johnson 00 T/A

They are slightly domed in the center, and the CC's are filled in a bit.

With what I was told with the CC's and the slight dome, it was at, or just a smidge below 12:1.

How's school Louis?

The Guy in MY 99TA

Hmm sounds like a head gasket to me. I have had similiar issues with motors before(not LS1s)

Josh S.

The Guy in MY 99TA

Has this car ever had nitrous on it? If so it is possible that the heads might be warped. Just a thaught.

Josh S.

Louis

iTrader: (7)

1. Was it bored? If so, How much?
2. The gasket is on right, the pics back that up\
3. The bore of the stock Head gasket was too small for the new bore, so there was not enough crush area
4. If there is Crankcase pressure(steam out the filler), then cyl. pressure is making its way inthere somehow....but from what.

School starts in less than a month! Ill let you know <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

cantdrv65

iTrader: (3)

When you couldn't start the car it was HYDROLOCKED!! I've seen the same thing MANY times before with a blown headgasket or cracked head and blown gasket. I once drove a car for over a month with a blown headgasket and cracked head which would occasionally hydrolock and overheat. The gunk in your valvecover is simply coolant water mixed with oil! PULL the heads soon!

Smoke_ur_5.0

iTrader: (2)

You definitely have a coolant leak into the cylinders causing it to get into the oil and exhaust. Could be a sleeve but probably the head gasket or not sealing correctly.

MelloYellow

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Chris Johnson 00 T/A:
<strong>Whats the deal with torque and such? The helms manual says 25ft/lbs, 90*'s, then 50*'s ( or something like that ) I'm sure it's WELLLL over 65 ft/lbs.

How should it be done?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Ya, the angle turns take it well past 65 ft/lbs. Gonna use a digital TQ wrench someday to find out, but my mech just hits them hard with the impact gun. Think he said the gun is around 110-120 ft/lbs. He's a full-time C5 mech and he's never had a car come back with a blown gasket, EVER. He does all his engines and H/C installs this way. Never broken a head off a bolt. I'm happy with this method. He's done my engine 3 times with no issues this technique.

Did you use some kind of sealant on the ends of the head bolts? That's necessary, right? I remember some sealant being needed on the block threads and other sealant necessary for some ported heads, but I forget what was up with the heads. My mech had to seal something on my ARE's once.

I'd go back to stock dowel pins and use a good GM MLS or Cometic MLS gasket.
How do you flush that milkshake oil outta there??

<small>[ July 11, 2002, 01:04 AM: Message edited by: MelloYellow ]</small>

Chris Johnson 00 T/A

No Juice on the motor.. Doubt that I ever will. The block came back from the engine bulder B&B'ed, heads came back from GTP, R&R'd, everything was 'new'. I put it together myself.

Engine was 'bored' ( more like honed ) about .006. JE pistons, manley rods, etc, etc. I'm running total seal rings. I doubt the .006 would cause an issue with gaskets... or would it?

I didn't use any 'sealant' on the bolts, other than what came on them. Yes, I used ARP lube on the face of the bolts & heads. Do I need something else like RTV? Can anyone confirm that for me?

I'll call GTP as well and ask.

I thank everyone again for your help.. I hope I'm almost done with this.

Louis

iTrader: (7)

If it was bored only 6 thou, there isnt a problem. I was concerned that you did like you always do and went to the limit, 20-30 thou.

Its that simple, just a blown HG. Fix it, flush it and be on your way.

Chris Johnson 00 T/A

Ha! Me? At the limit? naw <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Gawd, I hope your all right, and it's just a gasket.

Most wanted

iTrader: (1)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by MelloYellow:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Chris Johnson 00 T/A:
<strong>Whats the deal with torque and such? The helms manual says 25ft/lbs, 90*'s, then 50*'s ( or something like that ) I'm sure it's WELLLL over 65 ft/lbs.

How should it be done?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Ya, the angle turns take it well past 65 ft/lbs. Gonna use a digital TQ wrench someday to find out, but my mech just hits them hard with the impact gun. Think he said the gun is around 110-120 ft/lbs. He's a full-time C5 mech and he's never had a car come back with a blown gasket, EVER. He does all his engines and H/C installs this way. Never broken a head off a bolt. I'm happy with this method. He's done my engine 3 times with no issues this technique. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif"><img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />

LOL thats scarey.

So why has your motor been done 3 times????

MelloYellow

2 H/C setups & 1 broken Timing Chain. Actually 4 times for heads. Spun a bearing after the oil pump failed and replaced the engine. Took the heads off and replaced the graphite/lead BS GM gasket with an MLS one.

I guess it's just more a fu@k you to GM and their BS angle technique. He's done 100's of LS1's this way without ever having a problem. I don't see the issue. I've seen many more people do the angle technique wrong, or have the loc-tite seize up before 22 ft/lbs and then the rest of their angle measurements are fu@ked up BS as the reference point is lost. I always read about people trying to follow the GM angle technique and they are the ones blowing gaskets.

Not that this has anything to do with Chris.

Toxic Texan

Well is there an update???

Bad30th

iTrader: (13)

TTT, any news ?

Bad30th

LS1x2

iTrader: (11)

any update?

Patman

He posted in the lounge last week that he went 200mph, so things must be working. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

mmiller

iTrader: (1)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Patman:
<strong>He posted in the lounge last week that he went 200mph, so things must be working. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I saw that post. Yeah right. <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" />