 Starting my top end rebuild, But now I am concerned because of this |
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| LukeD |
 Jun 27 2005, 06:06 PM
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Member  Group: Members Posts: 254 Joined: 14-November 04 From: Atascadero, CA Member No.: 3,117 Region Association: None  |
This thread has made me nervous
http://www.914world.com/bbs2/index.php?act=...=ST&f=2&t=33950 I have my engine ready to pull in the morning to do top end rebuild and after reading this thread about lapping the cyl to the heads I am getting worried. I am having my heads re-built and buying new P&C's. What is the proper method when bolting the heads back on? Use seals or lap them. I have no idea how to lap somthing properly except my wife (IMG:http://www.914world.com/bbs2/html/emoticons/grouphug.gif) so what do I do? I watched Jake's type IV teardown and assembly and he made mention of not using the seals because of the buliten but didn't say anything about lapping either. I am tempted to take my pulled engine down to my local VW shop and having them do all the work because I am scared LOL Luke D |
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| echocanyons |
Jun 27 2005, 08:04 PM
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Advanced Member Group: Benefactors Posts: 2,107 Joined: 24-December 02 From: Bay Area, CA Member No.: 7 Region Association: Central California 
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Scott,
Not much experience with the type fours only type ones(&356 T1's) but... Why does the factory head not fit without machining? Warping? If lapping the heads should be done with every build why would you use a seal between, if you use one does the seal seat and make up the difference? How much should the heads be lapped and how do you know when your piston will have enough clearance...what are the tolerances? If a thorough inspection show the heads to be straight why would you need to lap them? How thorough inspection is needed and what is entailed? If they are torqued down properly they should seat, shouldn't they? Instead of lapping why not use a copper seal or spray/brush on copper coating to make up the difference and hold the seal without cutting your heads down? Is a lap job part of every head job? ( I know it sounds bad) |
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Posts in this topic
LukeD Starting my top end rebuild Jun 27 2005, 06:06 PM
Mueller Jun 27 2005, 06:17 PM tat2dphreak <... Jun 27 2005, 06:22 PM LukeD I am doing the work myself aside from sending my h... Jun 27 2005, 06:36 PM echocanyons Luke,
Dont sweat it.
Use the seals or dont but don... Jun 27 2005, 06:56 PM Headrage When I rebuilt my motor I tossed the head gaskets ... Jun 27 2005, 07:07 PM LukeD Well, decisions have been made,
Heads are going ... Jun 27 2005, 07:38 PM scott thacher kelly lapping the heads to the cylinders is the be... Jun 27 2005, 07:46 PM scott thacher there is also another thread going on this too, if... Jun 27 2005, 11:32 PM echocanyons Are you talking about lapping the cylinder or the ... Jun 27 2005, 11:42 PM scott thacher 
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