: What to do with these? (headgasket help)



lapwizrus
05-01-08, 08:37 PM
I am replacing headgaskets and using norms inserts. Got everything off and I have a questions on the what looks to be some kind of a guide for the head. My question is, I can't drill the holes with them in there and if I take them out and drill the holes, then they won't fit anymore. So, what do I do with them? Thanks for any help.

http://www.andrews.edu/~vorostse/guides.jpg

IMSAnorthstar
05-01-08, 10:09 PM
I am replacing headgaskets and using norms inserts. Got everything off and I have a questions on the what looks to be some kind of a guide for the head. My question is, I can't drill the holes with them in there and if I take them out and drill the holes, then they won't fit anymore. So, what do I do with them? Thanks for any help.



You need to pull the dowel pins out in order to drill for the inserts. Norm includes a 17/32" drill for his inserts, which is smaller thasn the OD of the dowel, so yes they can be re-installed without issue.

IMSA

lapwizrus
05-01-08, 10:18 PM
excellent, thanks for the fast reply.

IMSAnorthstar
05-02-08, 12:55 PM
yer more than welcome. also see here for other info:

http://www.cadillacforums.com/forums/northstar-performance-technical-discussion/137759-cometic-felpro-gm-oem-head-gasket-2.html

I

AJxtcman
05-02-08, 01:29 PM
Everyone see the coolant in this hole?
http://i224.photobucket.com/albums/dd25/AJxtcman/Northstar/Block%20failures/guides.jpg

RickyHenry
05-03-08, 12:30 PM
we had to pry them out with a 90 degree angle. Used vice grips to clamp on the top and then pryed them up. When we were ready to put them back in after installing norms kit, we just did a simple 20 second grinding job to repair the marks left from the vice grips. We put them back in upside down and they fit nicely. This was suggested by tateos and that's the direction we took.

Another suggestion was to drill a small hole in near the block, place a metal bar through the dowels and then pry them up with a 90.

97 STS
05-04-08, 02:39 AM
I also used the vice grips with a pry bar method. They came right out.

lapwizrus
05-04-08, 05:45 PM
These things are a pain in the a** to take out. When taking them out with vise grips I didn't think to put a bolt inside the dowels to prevent them from collapsing. So, two of them collapsed and the top part broke in pieces . I got the other two out by drilling a hole through the top part and using a metal rod to pull them out (had to use a torch as well to heat them up).

I don't know what to do with the other two as the bottom part of the dowels is still in the block. Only thing I can think of is to drill the dowels out. Didn't have the correct bit so I had to order one online (going to try 9/16 and 19/32 bits). Any other suggestions are welcome.

On the positive note, I got the other holes drilled and tapped. I bought a used Timesert kit and the norms kit. I used the Timesert guide and also their drill bit for the first pass. On the second pass, I used their guide and Norms drill bit. Worked really well.

When I do head gaskets on the second engine, I will just drill holes in all of the dowels and pull them out that way.

http://andrews.edu/~vorostse/dowels.jpg

RickyHenry
05-04-08, 08:55 PM
i used the back side of Norm's drill bit to use as the inside bracer. It fit very snug as a backdrop for the vice grips.

tateos
05-05-08, 12:38 PM
RickyHenry - I'm glad my suggested procedure for removing the dowels worked for you. And I like your idea of using Norm's drill bit as a filler. I never thought of that, but I will use that idea if I have to do this process again.