 Cylinder head rebuild, do these figures exist for Type IV heads |
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| Mueller |
 May 14 2018, 07:31 PM
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914 Freak!  Group: Members Posts: 17,146 Joined: 4-January 03 From: Antioch, CA Member No.: 87 Region Association: None 
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I found this 911 engine rebuild manual online, too bad no luck for Type IV motor found yet.
I have new SS 2.0 valves to install in my 1.8 heads which means I need bigger seats. Depending on how much the local shop quotes me tomorrow I attempt this myself. ( I do have a few extra heads to practice on) I'm mostly interested in the valve seat info. https://www.porscherepair.us/porsche-911-19...nder-heads.html   |
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| Mark Henry |
May 15 2018, 06:57 PM
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
You don't have to TIG weld, MIG will shrink them.
Find seats the right size, heat the heads and it's a .007 press fit. I prefer to hammer them in, I have a special drift that centers in the guide. Good seat are not hardened, cast seats are junk. Get an extra seat pound it with a hammer it should bend. If it doesn't bend or breaks it's cast. Seats aren't cut like a finished seat, you have to cut them 3 angles after you install them. Sounds easy right?...not quite. (IMG:style_emoticons/default/wink.gif) Attached image(s) 
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Posts in this topic
Mueller Cylinder head rebuild, do these figures exist for Type IV heads May 14 2018, 07:31 PM
porschetub You can save yourself some $$ by removin... May 15 2018, 05:58 PM
Mueller
You don't have to TIG weld, MIG will shrink t... May 15 2018, 09:34 PM Dave_Darling Which manuals have you checked, Mike?
The factory... May 15 2018, 09:52 PM porschetub Mark you are right,I only used a TIG because it wa... May 15 2018, 10:48 PM |
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