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waterboxer rebuild?
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Klack
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PostPosted: Thu Mar 30, 2006 8:45 pm    Post subject: waterboxer rebuild? Reply with quote

how much work is it to rebuilt a waterboxer engine? it's an 85...I have a pretty good mech know how but not familiar with this engine. I think it is just the head gasket which seems to be common. info/ideas?

thanks,
Shaun

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JamesT
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PostPosted: Sun Apr 02, 2006 7:04 pm    Post subject: Reply with quote

Head gasket's are about as hard as swapping a head on an aircooled motor. One you start messing around with pistons and sleves, it starts to get a little more complicated and special tools and tricks are needed, but someone with experience with boxer motors shouldn't have too much trouble doing it. While you have the head off, inspect it and all, and it would probably be better to replace both head gaskets while you have it all apart.
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Klack
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PostPosted: Sun Apr 02, 2006 8:32 pm    Post subject: Reply with quote

I was planning to do both as they are both leaking but hte left side more than the right. I haven't done a ton of engine work in the past but in college we did tear an horizontally opposed air cooled engine down to the crank but then again I also had a whole college shop and everything, probably spoiled! I've also done the head gaskget on my old 94 mazda 626 but I get the feeling this is a little more complicated. mazda was just take the top off, scrape old gasket off put new gasket on et voila!
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Greg
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PostPosted: Sun Apr 02, 2006 8:54 pm    Post subject: Reply with quote

whats wrong with the engine? are the heads pooched?
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TC
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PostPosted: Mon Apr 03, 2006 12:26 pm    Post subject: Reply with quote

Klack wrote:
I was planning to do both as they are both leaking but hte left side more than the right. I haven't done a ton of engine work in the past but in college we did tear an horizontally opposed air cooled engine down to the crank but then again I also had a whole college shop and everything, probably spoiled!

seems that people
http://www.gowesty.com/cylinderhead.html
http://www.bostonengine.com/articles/waterboxes.html
also like the amc heads over the stock they resist the corrosion
&&
some people like a ceramic coating to beef it up a bit more
http://www.geocities.com/harald_nancy/Westy_tech.htm
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Klack
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PostPosted: Mon Apr 03, 2006 4:59 pm    Post subject: Reply with quote

the engine has slowly been losing compression, it runs but rough. I think it is likely just the head gasket, hopefully not the heads. the engine is not leaking coolant so I guess that means the water jacket seal around the heads/pistons is still tight. heads/gasket/etc were done 11 years ago @ Ellice.
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Yellow_Beetle
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PostPosted: Mon Apr 03, 2006 11:20 pm    Post subject: Reply with quote

just use stock heads, there just as good. aftermarket stuff is usually just hype.
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Greg
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PostPosted: Mon Apr 03, 2006 11:37 pm    Post subject: Reply with quote

how can you say that stock heads are good when ever 10 or so years you have to dish out 2ish grand to replace them?
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Klack
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PostPosted: Tue Apr 04, 2006 10:25 am    Post subject: Reply with quote

so am I to assume then that the problem is more with the head being corroded than the head gasket getting eaten up?
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PostPosted: Tue Apr 04, 2006 2:34 pm    Post subject: Reply with quote

Do you know when the last time the heads were done? The coolent will erode the metal in he heads causeing them to leak, and inturn overheat your engine.
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Klack
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PostPosted: Tue Apr 04, 2006 2:50 pm    Post subject: Reply with quote

checking the receipts I have with the van it looks like about 11 years ago done by Ellice. the lady I bought it fro mhas prettty meticulous record keeping so I am pretty sure that is that last time. she didn't say anything about the van ever overheating, last it stopped running it was the battery but she thought it was the heads. turns out vans don't run without any juice in the battery Wink
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Greg
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PostPosted: Tue Apr 04, 2006 11:51 pm    Post subject: Reply with quote

At first the heads gradually leak, causing visable vapor loss (steam around your engine) if this goes unnoticed, it can cause for lack of coolent followed by your engine over heating.

11 years is getting to the end of the heads life.... If it is just the head gasket, it should be a cheap fix. But in the near future (maybe... or you could be lucky and your heads will last for 15+ years) you will need to replace your heads, which will be doing the same process over again, with the labour charge.

If you have the time, and money you could always change the engine. Theres the VW straight 4's. These have been done but require a bit more finnesse when installing. Or you could put a subaru flat 4 in. the non-turbo engine will fit in fairly easily, and have a substantial power increase. Or, you could go for the the turbo engine, and get even more power. Or, you could get the STI turbo putting out betweeen 250-300 hp.

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Klack
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PostPosted: Wed Apr 05, 2006 12:46 am    Post subject: Reply with quote

oh the slipery slope of engines swaps! how nice that would be. what about a later 80's engine? did the 2.1s suffer the same fate or did VW just never get the heads right?
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ifitaintsplititaint
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PostPosted: Wed Apr 05, 2006 9:57 pm    Post subject: Reply with quote

Rebuilt for sale $7000.00, all new. PM for info. Serious buyers only. thanks.
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Ovalzealous
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PostPosted: Sun Apr 09, 2006 10:17 pm    Post subject: Reply with quote

It's not really the heads that are the problem, it's the coolant. These engines require the use of the blue VW coolant. Regular green coolant will eat away at the heads.
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