

| Subject: | Re: cracked AMC heads question |
| From: | Chris Lisica |
| Date: | Mon, 10 Sep 2007 11:03:58 -0700 |
My plans are for my wife to drive it around town. Run some errands, go to the bank, etc..... It's her dream car, she's always wanted a westy so I took the plunge on this project, (got it for a good price). We will also do the monthly 4 hour trip to the coast to get some surf in. The more I read, the more I think I will go w/ good used German heads, or reman'ed German heads. I found a machine shop in CA (these guys<http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=270162056694&ssPageName=STRK:MEWA:IT&ih=017>) that sells reman'ed German heads, or so they told me over the phone. If you have any opinions, I'd love to hear them! Thanks. Chris On 10/10/07, Bob Donalds <donalds1@verizon.net> wrote: > > I also see lots remains of the day in AMC heads > some had bad exhaust pipes at the head some as I said in my last post had > bad lifters and some have the valve stem worn right out but again what > valve > how many miles and was the engine set up correctly > The AMC core collection on my floor has just as many pounded out exhaust > seats as they do wiped out stems > I did see the picture of the cracked AMC head that bad boy got hot enough > to > do some damage > the question becomes what are you going to do with the van? If driving out > of town is the responce them spend some money and bring it up to a point > of > reliability. > So you dont spend you vacation at a location of the vans choosing not > yours > > Bob > Boston Engine > > > > ----- Original Message ----- > From: "dylan friedman" <insyncro@YAHOO.COM> > To: <vanagon@GERRY.VANAGON.COM> > Sent: Monday, September 10, 2007 10:29 AM > Subject: Re: cracked AMC heads question > > > > Ken, > > I have 5 sets of AMC heads at my shop right now with at least one valve > > that is shot. The highest mileage of any of them is 15k. > > > > The heads GoWesty sells and BB's Big Valve heads are far from stock. > > > > I trust those two vendors and Benny Boy has a section devoted to AMCs as > > well. > > Give it a read, well worth the time spent checking it out. > > > > Stock is stock. > > > > dylan > > > > Kenneth Wilford <kenwilfy@COMCAST.NET> wrote: I have sold many, many AMC > > heads with the valves that come with them > > over the years. I have also installed many of them for customers. > > Maybe there was a problem several years ago with the valves, but I have > > never had a problem with the stock valves that come with the heads. If > > the other suppliers were telling the full story they would tell you that > > they are taking out valves that they say have quality issues only to put > > back in valves that are not OE anyway (so who really knows how much > > better quality of a valve that they are?). The OE valves are so > > expensive that you couldn't use them and still sell the heads for what > > these folks are selling them for. So to me it is one of those "You > > should buy it from me because everyone else is selling crap" stories > > that is mostly smoke and mirrors. Now if they were putting in OE valves > > I would have no problem with them decrying the quality of the valves > > that come in the AMC heads and charging a premium for changing the > > valves. If they aren't doing that I feel that this is just a marketing > > ploy to add value to a product just because it came from a certain store > > when in fact everyone else is selling a similar product for a cheaper > > price. The place out West sells many unique and cool products that only > > they have and that is good. However just because you paid extra for a > > head at this Western store (or any other vendor) doesn't necessarily > > mean that it is better. Even when you have pictures and a nice > > technical story to go with it. > > > > Just my opinion, > > Ken Wilford > > John 3:16 > > www.vanagain.com > > > > dylan friedman wrote: > > > >>Bottomline, if you are going to spend the money on brand new AMC > >>heads....make sure you replace the stock valves. Read up at GoWesty and > >>Boston Bob on this subject. > >> > >>With that amount spent on heads, it doesn't make sense to not freshen up > >>the bottomend bearing, replace water pump, oil pump........you get the > >>picture. > >> > >>At this point you will have spent about 3/4 of the cost of a 2.5 Subaru > >>conversion or Zetec if you do it yourself. > >> > >>The wbx is get if it is running strong, but I would transplant if you > want > >>true reliabliity. > >> > >>dylan's 2cents > >> > >>Chris Lisica wrote: This van will eventually be my wife's daily driver, > >>hopefully. That's my > >>goal. So I really want to get the engine in tip top shape and have > minimal > >>rescues. It has an auto trans axle that is fairly new so once the engine > >>is > >>dialed in, it should be very reliable. The previous owner spent a > fortune > >>throwing parts at the van, so lots of things are new. > >> > >>On to the heads. So, in your opinion/experiences, engine performance is > >>restored to new by buying new heads/cylinders/pistons? I'm a little > >>hesitant > >>to do the whole shebang because the previous owner said that it ran very > >>well prior to the overheating issues. His exact words were, "Very > strong". > >>So based on that, I'm hoping I can get away w/ good used heads and see > >>what > >>happens. But at the same time, I don't want to do this 10K miles down > the > >>road. Thoughts? > >> > >>Thanks for the input.. > >> > >>Chris > >> > >>On 9/9/07, David Kao > >> wrote: > >> > >> > >>>It's really a question how well you want to rebuild your engine. > >>>A crack between the valves may be fine for a while but eventually > >>>the head will fall apart. You will have to take it apart again > >>>to deal with it eventually. > >>> > >>>If you want the engine back to what it was but with no crack on > >>>the head to worry about then buy a used one that has no crack and no > >>>damaged valves and valve seats. Just do a valve job and put the engine > >>>back together. This may last a long time and the engine performance > >>>will reflect its mileage. > >>> > >>>But if you really want your engine rebuilt back to top performance > >>>the best strategy is to spend for a pair of new heads. Replace the > >>>piston/cylinder liners as well. If everything is done properly the > >>>engine will perform well over another 100k without giving you > performance > >>>issues. > >>> > >>>I just had my 1.9 engine rebuilt. I put in a new set of liners only > >>>because > >>>the heads were replaced 20k miles ago by a VW dealer under warranty. I > >>>first > >>>thought the heads were rebuilt. But I found out that the heads were > >>>actually > >>>new VW heads. After 3k miles of break-in I am extremely happy with the > >>>result > >>>of the rebuild. The engine is totally cool now. I am glad that I had > the > >>>new liners in it. > >>> > >>>An 87 Westy is worth a full restore if I were you. Good luck. > >>> > >>>David > >>> > >>> > >>>--- Chris Lisica wrote: > >>> > >>> > >>> > >>>>Yeah, sorry, I'm talking about the cracks between the valves. I've > heard > >>>>that a hairline fracture is acceptable, but that one in my picture is > >>>> > >>>> > >>>pretty > >>> > >>> > >>>>big. A leak test would be good. > >>>> > >>>>Hmmm, thanks for the advice. Some of those measurement numbers are > >>>> > >>>> > >>>scary! I > >>> > >>> > >>>>have a line on a used set of German heads for $200, I may just go that > >>>>route. > >>>> > >>>>Chris > >>>> > >>>>On 9/9/07, Scott Daniel - Shazam wrote: > >>>> > >>>> > >>>>>You're talking about the cracks between the two valves ? > >>>>>Totally normal. > >>>>>You 'could' get them pressure tested if you're worried, > >>>>>You can also peen the cracks shut with a hammer and punch. > >>>>> > >>>>>Fwiw - ..judging by the corrosion where the water gasket touches this > >>>>> > >>>>> > >>>head > >>> > >>> > >>>>>- > >>>>>perhaps you might get away with head gaskets only. > >>>>> > >>>>>I would also test for valve sealing by filling the ports with > gasoline > >>>>> > >>>>> > >>>or > >>> > >>> > >>>>>kerosene, and see if they leak. I usually find at least one exhaust > >>>>> > >>>>> > >>>valve > >>> > >>> > >>>>>leaking. > >>>>>Then I have a machine shop do a valve job. > >>>>> > >>>>>And what I wanted to say about AMC heads - fwiw, I have one.....that > >>>>> > >>>>> > >>>I > >>> > >>> > >>>>>installed new, and it didn't last, for head gasket sealing .....that > >>>>>particular head is so far out of 'dimension' it's sick. Pure > >>>>>junk. And > >>>>>it was factory new. So I'd be careful about AMC heads, if nothing > >>>>> > >>>>> > >>>else. > >>> > >>> > >>>>>I'm finding it necessary to check how much the water gasket gets > >>>>>compressed. > >>>>>By my measurements the water gasket is 3.7 mm thick. > >>>>>Put the head on temporarily ( with metal sealing rings at the top of > >>>>> > >>>>> > >>>the > >>> > >>> > >>>>>barrels ) and measure the water gasket gap. > >>>>>Iv'e seen it be 3.7 mm - thus no compression on the water gasket - > >>>>> > >>>>> > >>>and it > >>> > >>> > >>>>>leaked after a thousand miles. > >>>>>Iv'e seen it vary , like 4 mm on one end, 7 mm on the other, and so > >>>>> > >>>>> > >>>forth. > >>> > >>> > >>>>>And I'd be real careful with AMC heads. > >>>>>I'd rather have a good set of used non-amc heads and rebuild them, > >>>>> > >>>>> > >>>then > >>> > >>> > >>>>>install them, than use AMC heads, unless the measure out nicely. > >>>>>Scott > >>>>>www.turbovans.com > >>>>> > >>>>>-----Original Message----- > >>>>>From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On > >>>>> > >>>>> > >>>Behalf Of > >>> > >>> > >>>>>Chris Lisica > >>>>>Sent: Sunday, September 09, 2007 7:35 PM > >>>>>To: vanagon@GERRY.VANAGON.COM > >>>>>Subject: cracked AMC heads question > >>>>> > >>>>>Volks, > >>>>> > >>>>>After purchasing my wife's 87 Westy project, I'm finally getting > >>>>> > >>>>> > >>>started. > >>> > >>> > >>>>>I > >>>>>knew the heads were messed up, but I was hoping for a simple head > >>>>> > >>>>> > >>>gasket > >>> > >>> > >>>>>job. Upon closer inspection, and a few pictures in macro focus mode, > >>>>> > >>>>> > >>>there > >>> > >>> > >>>>>appears to be a big crack on the one side. Any opinions? Is this head > >>>>>reusable? What could cause such a large crack? The pics: > >>>>> > >>>>>http://wavanagon.googlepages.com/amcheads > >>>>> > >>>>>Please help enlighten an aspiring Vanagon mechanic. Thanks for any > >>>>>advice/input/feedback/links/etc..... > >>>>> > >>>>>-- > >>>>>Chris > >>>>>88 Vanagon GL (daily driver) > >>>>>87 Westfalia (in progress) > >>>>> > >>>>> > >>>>> > >>>>> > >>>>-- > >>>>Chris > >>>>88 Vanagon GL (daily driver) > >>>>87 Westfalia (in progress) > >>>> > >>>> > >>>> > >>> > >>> > >>> > > >>>____________________________________________________________________________________ > >>>Be a better Globetrotter. Get better travel answers from someone who > >>>knows. Yahoo! Answers - Check it out. > >>>http://answers.yahoo.com/dir/?link=list&sid=396545469 > >>> > >>> > >>> > >> > >> > >> > >>-- > >>Chris > >>88 Vanagon GL (daily driver) > >>87 Westfalia (in progress) > >> > >> > >> > -- Chris 88 Vanagon GL (daily driver) 87 Westfalia (in progress)
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