#3 Misfire after LIM Change

[02GT_Skyhigh]

FINALLY ITS OUT!!
I got a good referral and the guy did it in about 15 minutes and I gave him $20 so it worked out sweet! I helicoiled 3 more while I was back there.

I need 5 Qts of oil and an O-ring for the fuel rail. Got the LIM set so Ill be ready sor start-up tomorrow
Painted my UIM while I was waiting for a ride today!

[02GT_Skyhigh]

The reason I asked about the orange Dexcool is it's known to eat gaskets and it's not very good on bi-metallic engines (cast iron block/aluminum heads). When you get done putting the heads on, you might want to flush the cooling system and switch to the regular green stuff.

I do not doubt you at all, I actually like the suggestion. I know you have to flush your system more regularly, but that would be ok to protect the integrity.
Can you link some info for me on this, I'm going to refine a search.
EDT**

http://60degreev6.com/forum/showthread.php/36526-Dex-cool-is-not-my-friend?highlight=organic

http://60degreev6.com/forum/showthread.php/35457-GREEN-antifreeze-reccomendations?highlight=

[pocket-rocket]

The reason I asked about the orange Dexcool is it's known to eat gaskets and it's not very good on bi-metallic engines (cast iron block/aluminum heads). When you get done putting the heads on, you might want to flush the cooling system and switch to the regular green stuff.

[02GT_Skyhigh]

I dont think it was dropped, this is the re-placement set I got!

I think it broke for this reason VVV and also the fact the head was still fairly hot when i was tapping it.
The metal expanded at different rates and SNAP!
Im waiting to go to the machine shop (need a ride)
I think Im just going to do the other ones why I have the head off.

[Azrael]

I wonder if your helicoil set was dropped/abused before you got it. The taps are heat treated to be very hard and can be very brittle.

[02GT_Skyhigh]

Maybe he was waiting for the 'ping' you hear when you tighten your head down. lol
This problem got way out of control, way fast. I think It broke cause as it got further into the head, the temp was hotter and hotter, it expanded and broke where it was still cold. I had a 30" floor fan laying in the engine bay prior to the 'surgery'.
Since I'm getting a new helicoil set, I will have 10 coils. I'm just going to do the other 5 back there.
I wish I had a TIG, I would put a short hollowed out bolt in there and weld that biach on there and back it out... Tomorrow it will be done.
Updated the old thread to direct to the new one.

[bob442]

well, guess he was taught "tighten till it strips, then back it of about a 1/4 turn"

[bszopi]

Might want to update your thread over on GAGT.com, since they are still providing possible causes...

[02GT_Skyhigh]

I skimmed. Not sure if the answer to reusing the LIM gasket was answered, but yes, I've reused them before and it worked out fine. Also, is that orange DEXCOOL?

Yes orange GM DEXCOOL. Thats always been the way I've known it to be, but I'm only 23.
The gaskets, after inspecting them still have a very rubber-like feel to them, they arent cracked or hardened, so I am going to re-use them. (just LIM, not the head)

this really sucks for you man. i would just heli coil ever last f**king one, theres alot of stress on the rockers.
Did you properly tourqe the LIMG in sequence? i thin kits 14INLB, 80INLB and 114INLB? i might be off a bit but its along those lines...

I properly TQ'd it, cause this ported one that just came off ISNT cracked.
It was my dads mechanic who cracked it, cause I had to do headgaskets 3 months later and I was pissed when I pulled it off.
OLD ONE...

[bob442]

this really sucks for you man. i would just heli coil ever last f**king one, theres alot of stress on the rockers.
Did you properly tourqe the LIMG in sequence? i thin kits 14INLB, 80INLB and 114INLB? i might be off a bit but its along those lines...

[pocket-rocket]

I skimmed. Not sure if the answer to reusing the LIM gasket was answered, but yes, I've reused them before and it worked out fine. Also, is that orange DEXCOOL?

[02GT_Skyhigh]

OK!
Got the head off, valves, and pistons look good.
Finally, I get to relax tomorrow. Nothing Is open here until
Monday.
I HOPE when I go into the machine shop the guy says, 'Oh, ya, no problem give me 15 minutes!' haha Seeing the glass half-full or half-empty, your choice.
Now to the pics that I feel Ya'll need to see, at least I dont feel like I'm in this alone, so thanks Guys. My ex-girlfreind/roomate is not the type to be inclined to learn about something she dosent care about... I'm having fun though! Stay tuned

Gaskets that aren't even a week old.








Freggin Jacked Up Monkey Nutttt

[02GT_Skyhigh]

"The Rule of Thumb"...(which, as an archaic, biblical principle is concerned, has to do with the Maximum Outside Diameter any stick being used to beat someone with could only be.. as thick as the user's thumb) But in this case...where gaskets are concerned...NEVER RE-USE ANY GASKETS !!!

This does not apply in survival situations like those in the book "The Sands of the Kalahari" where you should use cookie-cutter pieces of your BVDs for head gaskets if that is all you have to make the motor work. But in this cae...Why not sped the money on brand new gaskets to get back your peace of mind and not have the gasket issue waking you up at 3 AM with wonder and worry?...

In kentucky its a law that you can beat your wife with a stick no thicker than your thumb.
EDT* On Sundays....Haha

Man, How I would love to replace them, But I saved for 3 months to get the 3400comp set cause I needed the gaskets and that's a screamin deal. but anyways, I dont want to get in over my head at the moment.
Machine shop=$ Other parts an accesories needed=$
Broken car=No $
I'm 1099 working on another business, so this cant wait, WELL I will see when the time comes...
Thank you.

[02GT_Skyhigh]

I had already looked at these and considered it, but being my DD it is imminent that this be handled in a timely manner, I would love to go Cost-effective, but I cant wait for something to come in the mail.

http://cgi.ebay.com/New-WALTON-TAP-EXTRACTOR-4-FLUTE-3-8-10374-/230571312458?pt=LH_DefaultDomain_0&hash=item35af1f054a

http://cgi.ebay.com/ebaymotors/Walton-6Pc-Tap-Extractor-Set-_W0QQcmdZViewItemQQhashZitem3364d4c6eeQQitemZ220734998254QQptZMotorsQ5fAutomotiveQ5fTools

My helicoil set was replaced and at this stage Im going to Re-tap all them on the head. The level of difficulty will be half with the head off. I have all night to do this and It really dosent bother me to teardown-build-teardown-build.

Ya I would really liked to have gotten it out but I'm at that point.

TOOL I MADE TO EXTRACT(BROKEN)


Where I'm at now. 4:00Pm Cali time.(About to switch the Dew for a Brew!)

[60dgrzbelow0]

"The Rule of Thumb"...(which, as an archaic, biblical principle is concerned, has to do with the Maximum Outside Diameter any stick being used to beat someone with could only be.. as thick as the user's thumb) But in this case...where gaskets are concerned...NEVER RE-USE ANY GASKETS !!!

This does not apply in survival situations like those in the book "The Sands of the Kalahari" where you should use cookie-cutter pieces of your BVDs for head gaskets if that is all you have to make the motor work. But in this case...Why not sped the money on brand new gaskets to get back your peace of mind and not have the gasket issue waking you up at 3 AM with wonder and worry?...