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Date:         Tue, 18 Jan 2005 17:56:41 -0500
Reply-To:     "Bostig Eng." <syncrolist@BOSTIG.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         "Bostig Eng." <syncrolist@BOSTIG.COM>
Subject:      Re: Head treatment for pitting--flattening technique
Comments: To: Michael Knight <vwdormer@HOTMAIL.COM>
In-Reply-To:  <BAY22-F1764FB9C8DD27750D1B372CD8F0@phx.gbl>
Content-Type: text/plain; charset="us-ascii"; format=flowed

Yeah, we've fixed a number of subie heads with serious pitting (in fact chunks missing at times), best way is definately TIG, we've had great results. As in the subies, it's a good idea to check with a multimeter to see that your cooling system isn't charged(one probe in the expansion tank, one on the battery neg) as this is a fast way to corrode parts quickly. I've seen a brand new heater core leak in a month of use because the system was going through electrolysis so badly. Never a bad idea to run a few extra grounds to both the block and your heater cores to prevent this.

Jim

Jim Akiba Bostig Engineering 978-772-3274 - shop 781-316-4615 - direct http://www.bostig.com

At 03:45 PM 1/18/2005, Michael Knight wrote: >I went with the JB Weld due to the fact that my heads were cracked, not >beyound Bently's Spec. I also desperately need to get my ride back on the >road. If it gets me by for a couple weeks until I can afford or wait for >other heads, I am fine with that. I did not get it finished last night >though. I have spent some time cleaning up, replacing, repairing other parts >as I go along to ease the overhaul to come. > >While on this, since I just did this what would be the best way to fill with >Aluminum MIG or TIG? Anyone have any experience? > > > >Michael Knight >'77 Westy Deluxe, "el Verde" >'85 Vanagon GL, nameless >


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