Return-Path: <tomyoung1_at_attbi_dot_com> Mailing-List: contact type2-help_at_type2_dot_com; run by ezmlm Delivered-To: mailing list type2_at_type2_dot_com Delivered-To: type2_at_type2_dot_com Received: (qmail 43653 invoked from network); 20 Jun 2003 17:43:09 -0000 Received: (QMFILT: 1.1); 20 Jun 2003 17:43:09 -0000 Received: from rwcrmhc11_dot_comcast_dot_net (HELO rwcrmhc11.attbi_dot_com) (204.127.198.35) by pon.type2_dot_com with SMTP; 20 Jun 2003 17:43:09 -0000 Received: from compaq (12-240-218-60.client.attbi_dot_com[12.240.218.60](untrusted sender)) by attbi_dot_com (rwcrmhc11) with SMTP id <20030620174243013008t4sce>; Fri, 20 Jun 2003 17:42:43 +0000 Message-ID: <006401c33753$e7c58280$7900a8c0_at_attbi_dot_com> Reply-To: "Tom Young" <tomyoung1_at_attbi_dot_com> From: "Tom Young" <tomyoung1_at_attbi_dot_com> To: <type2_at_type2_dot_com> References: <019601c3374b$299fcfc0$0200a8c0_at_Chris> Date: Fri, 20 Jun 2003 10:46:40 -0700 Subject: Re: [T2] Heads/shims/gaskets Oh my The original build of the TypeIV engine had a paper gasket between the cylinders and the crankcase and the head ship between the head and the cylinder. As you know, VW later changed that to eliminate the head shim and substitute a metal spacer for the paper gasket between the cylinders and crankcase. The very, very safest thing to do is to cc the heads, measure the deck height (no gasket or shim), do the calculation for compression ratio, and shim between the cylinders and crankcase accordingly. If you can't or don't want to do that then you'll have to take a chance and put it back together with what you've got. If you purchased a gasket kit from the Bus Depot then the kit most likely has the "head" shims. Since the head shims and cylinder/crankcase shims are completely different sizes you can quickly tell which you have by trying to insert one in the head. (Even though VW said to stop using head shims years ago any gasket kit I've bought has had those shims included.) Since you didn't have the heads machined you should be OK going this route, assuming the CR was basically OK to begin with and that the new pistons/cylinders don't materially affect your deck height. --------------------------------------------------------------- Tom Young '81 Vanagon Lafayette, CA 94549 '82 Westfalia --------------------------------------------------------------- ----- Original Message ----- From: "Chris Watts" <cwatts_at_aomc_dot_com> To: <type2_at_type2_dot_com> Sent: Friday, June 20, 2003 9:44 AM Subject: [T2] Heads/shims/gaskets Oh my > I'm in the process of putting together my 2.0 GE 1979 engine, had the heads > cleaned and checked (not machined) and have new piston/liners on the way. > When putting the liners back on, do I use the metal shim gaskets that I > received with my rebuild kit from Bus Depot? Or are these shims supposed to > go between the head and the top of the piston liners? > > Boston engine states : eliminate the head gasket and replace it with a 1.6mm > aluminum shim (#071 101 34), or a steel one, at the base of the cylinder > between the cylinder and crankcase. > > But when I yanked the engine apart, the shims were not on the crank case, > rather in the head. > > Do I do shims in both places? > > All this talk about deck hight is confusing me! Since I didn't machine the > heads at all, the height shouldn't be affected right?