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Re: Perkins 4.108M DIY Rebuild -- A Narrative
The tube stack in the Bowman isn't your garden variety copper unit.
It's cupro-nickel, which is really, really corrosion resistant. That's why the Bowman h/x units aren't produced with sacrificial zincs -- they don't need them (according to Bowman.) I was skeptical about that claim until I opened mine up and found no signs of corrosion. It was a showing just a little calcification, but no corrosion at all. The aluminum mixing elbow, OTOH, had some issues (which you'll also hear about a little later...)
BTW: ASAP Supplies has this tube stack listed for about $380 (VAT not included).
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'85 BYB Vagabond 39
Last edited by PorFin; 03-26-2013 at 07:42 PM.