Bill Stoneberg Posted September 16, 2001 Share Posted September 16, 2001 I cannot get my intake manifold seated properly on my 1950 Buick Super. It seems like when I had the mainifold surfaced mor material came off the back of the manifold then the front. Consequently the pilot ring in the intake manifold wont let the manifold seat properly. I have about an 1/8 " gap between head and manifold on one intakke port. All the others seat fine.<BR>Do I need to put all the pilot rings in or can I leave the back one out ?<BR>Thanks for any and all comments. Link to comment Share on other sites More sharing options...
The Old Guy Posted September 16, 2001 Share Posted September 16, 2001 If you use a depth guage to measure the depth of the counterbores in the head and intake and add the two together ,that will give you the thickness for the pilot.then you can grind the pilot to that thickness and it should work fine. Link to comment Share on other sites More sharing options...
Bill Stoneberg Posted September 17, 2001 Author Share Posted September 17, 2001 Yes, I had tried that approach too. Problem is I have les that 1/32 " of counterbore in the manifold. I am working on it though.<BR>What is the purpose of thos pilot rings anywaY ? Link to comment Share on other sites More sharing options...
The Old Guy Posted September 17, 2001 Share Posted September 17, 2001 The principle behind the rings is to hold the intake in the proper place while the exhaust moves. The exhaust because of its length moves like a snake when it heats up .Heat will cause it to grow and when it cools off it will return to normal size. I have seen mechanics leave them out and experience no problem ,so if you have three in place ,you will more than likely get by nicely. I am surprised that they had to remove so much iron to straighten you intake Link to comment Share on other sites More sharing options...
Bill Stoneberg Posted September 19, 2001 Author Share Posted September 19, 2001 I was surprised at the amount that was removed too. I didn't look at it before I sent it over to the machine shop, so it could have been machined before I got it.<BR>I was able to cut one of the rings in half and it worked like fine. Now the manifold sits on the head.<BR>Of course cutting the ring took 10 saw blades.... those things are hard. Link to comment Share on other sites More sharing options...
Guest Posted September 20, 2001 Share Posted September 20, 2001 Bill ~ And how many knuckles while using up those 10 blades? hvs Link to comment Share on other sites More sharing options...
Bill Stoneberg Posted September 20, 2001 Author Share Posted September 20, 2001 Howard,<BR>No knuckles, just saw marks across all 4 fingers on the left hand... Link to comment Share on other sites More sharing options...
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