: Head Gasket Repair



BBB4455
11-02-08, 06:30 PM
I'm about to take the 4.6L out of my 99 deville. I've purchased head gaskets from the dealer and they suggested 'big-serts'. I bought 10 of them, expecting to have to drill out some stripped threads. The size they gave me were M11x1.5. Some questions...I've been looking for the kit and/or the correct tap for this item with no success. The full kit is $459. Are there any other successful 'time sert' kits available that are easier to get and cheaper? If I were to stay with these bigserts, would the tap size indeed be M11? Is there are thread spec? And what would the correct size drill bit be? Thanks!!!!!

Ranger
11-02-08, 06:59 PM
The "Big Sert" is used IF the regular Timesert should fail or you screw up the installation. It gives you a second chance at saving the block. Have you checked Ebay for a used kit?

Lebowski
11-02-08, 08:10 PM
Did you read both stickys at the top of the Northstar forum regarding head gaskets? They both have a lot of useful info in them. Good luck....

zonie77
11-02-08, 09:24 PM
There are threads on this galore. You should read some before you start. Get the factory service manual. Here's my write up,

http://www.cadillacforums.com/forums/northstar-performance-technical-discussion/5052-n-head-gasket-repair-part-i.html

Tateos had a long thread with a lot of tips. You'll have to look for his.

tateos
11-03-08, 03:10 PM
I suggest Norms:

http://cgi.ebay.com/ebaymotors/NORTHSTAR-ENGINE-NS300L-HEAD-BOLT-THREAD-REPAIR-KIT_W0QQcmdZViewItemQQ_trkparmsZ72Q3a1205Q7c39Q3a1 Q7c66Q3a2Q7c65Q3a12Q7c240Q3a1318QQ_trksidZp3286Q2e c0Q2em14QQhashZitem160295580418QQitemZ160295580418

jeffrsmith
11-03-08, 04:53 PM
I suggest Norms:

http://cgi.ebay.com/ebaymotors/NORTHSTAR-ENGINE-NS300L-HEAD-BOLT-THREAD-REPAIR-KIT_W0QQcmdZViewItemQQ_trkparmsZ72Q3a1205Q7c39Q3a1 Q7c66Q3a2Q7c65Q3a12Q7c240Q3a1318QQ_trksidZp3286Q2e c0Q2em14QQhashZitem160295580418QQitemZ160295580418

I'll second that, those are what I used when I did mine this past summer.