: How to tell if block is timeserted?



banditzed
09-25-07, 12:43 AM
Hi All,
I have a spare Northstar with a spun rod bearing. Took it apart today to check it out. Undid head bolts by hand to get a feel for the threads. The heads on this motor are much cleaner externally than the block, which led me to believe it had probably been timeserted. How can I tell for sure? Looked in the bolt holes, I think I see an insert, but my eyes aren't what they once where. The motor in my 98 STS is starting to push anti-freeze out and I did a leak-down test and found the coolant level rose when I pressurized #3 cyl. I'm hoping to combine the 2 motors, just want to see what I'm into before diving into it.
Thanks for any help,
Martin

dkozloski
09-25-07, 01:09 AM
Timeserts are carbon steel and are magnetic. Use a pencil magnet.

Ranger
09-25-07, 01:59 AM
Timeserts have a flange on top that fits into a counter bore in the block. It should be readily visible.
http://www.timesert.com/

AJxtcman
09-25-07, 11:45 AM
Timeserts have a flange on top that fits into a counter bore in the block. It should be readily visible.
http://www.timesert.com/

The Timesert Inserts for the head bolts do not have a flange.

Ranger
09-25-07, 12:03 PM
Really? I thought the drill was stepped and the block was counter bored.

AJxtcman
09-25-07, 02:15 PM
Really? I thought the drill was stepped and the block was counter bored.

The flange would help lock the POS in place, but it installed some 55mm to 75mm below the deck.

banditzed
09-27-07, 01:21 AM
Hi, Thanks for the replys, I have figured out that the threads in my block have had inserts installed. Can't tell if they are timeserts or not. When I was pulling the heads, I noticed a couple of bolts felt like they weren't as tight as the rest. So now I'm wondering if these inserts may be starting to fail. Does anyone have any experience with this kit ?http://cgi.ebay.com/ebaymotors/NORTHSTAR-ENGINE-NS300L-HEAD-BOLT-THREAD-INSERT-KIT_W0QQitemZ150164879309QQihZ005QQcategoryZ33620Q QssPageNameZWDVWQQrdZ1QQcmdZViewItem

Ranger
09-27-07, 10:38 AM
AJ swears by them.

AJxtcman
09-27-07, 01:58 PM
Hi, Thanks for the replys, I have figured out that the threads in my block have had inserts installed. Can't tell if they are timeserts or not. When I was pulling the heads, I noticed a couple of bolts felt like they weren't as tight as the rest. So now I'm wondering if these inserts may be starting to fail. Does anyone have any experience with this kit ?http://cgi.ebay.com/ebaymotors/NORTHSTAR-ENGINE-NS300L-HEAD-BOLT-THREAD-INSERT-KIT_W0QQitemZ150164879309QQihZ005QQcategoryZ33620Q QssPageNameZWDVWQQrdZ1QQcmdZViewItem

This is my complaint with Norms inserts.
I have used the GM TimeSert kit. It has a better plate and the drill has a stop. This is not that big of a problem.
The small problem that could occur with Norms kit is the insert turning while your are torquing the head. This would cause an uneven torque because the treads are a different pitch from the inside to the outside. This is the #1 selling point to the kit. The outside threads can bite into the block. Catch 22. When installed Norms inserts they were all about the same depth.
The GM system will set the inserts in at the same depth every time. I had a couple of norms that could have turned in further. I just let the loctite setup.
If you just set the drill depth the same everytime with a lock collar it will be fine.


I can tell you that they work 80% better than the GM system on 99 and prior block. Three thumbs up to Norm from me.:thumbsup::thumbsup::thumbsup:

jholland
09-27-07, 02:01 PM
Ranger, you are right about the counterbore.

AJxtcman
09-27-07, 02:13 PM
http://i224.photobucket.com/albums/dd25/AJxtcman/Picture20002.jpg
http://i224.photobucket.com/albums/dd25/AJxtcman/Picture20015.jpg
http://i224.photobucket.com/albums/dd25/AJxtcman/Picture20016.jpg
http://i224.photobucket.com/albums/dd25/AJxtcman/Picture20035.jpg
http://i224.photobucket.com/albums/dd25/AJxtcman/1-1.jpg

On the GM inserts they really don't have a flange for this application.
pictured is both types Norms and Timeserts.