Tony,

All of the engine conversions use the stock cooling system.  It is way
more cooling than the waterboxer needs so it is great for the other
conversions as well.  I have never seen a plastic coolant pipe crack
lengthwise before.  The ends usually go long before that.  I would have
the rest of your cooling system checked after you get the new pipes.
You could also have a bad radiator or even a low speed fan resistor.
There is a write up on my site on how to check your fan speeds to be
sure they are working properly.  Let me know if I can help you further.
--
Thanks,
Ken Wilford
John 3:16
www.vanagain.com
Phone: 856-327-4936
Fax: 856-327-2242

On 11/8/2010 8:51 AM, Anthony Egeln wrote:
> Greetings,
> To make a long story short, we were driving home from a weekend in Orlando yesterday and I looked in my rear view and the guy behind me had his windshield wipers on and I had water on my back window.
> I pulled over and there was a three inch crack in one of the long (front to back) white plastic coolant pipes.  I wrapped it in extreme tape, but that wasn't enough and I had to be towed home.
> Anyway, I'm not sure yet if I overheated it badly enough to fry the engine, but before I replace the long coolant pipes, I want to ask the list about whether or not the various engine conversion options (Subaru, Bostig, in-line 4 etc) all used the stock cooling system.
> I hope I don't have to replace the engine but want to be prepared if I do, and that factors in if I buy the stock cooling pipe now.
> Oddly enough we just had that long list thread about the stainless steel coolant pipes, and now I'm getting ready to call Bus Depot and buy them!
> Thanks,Anthony'89 Syncro GL (Hidalgo)
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