Viton Seals in 13bt Injection Pump?

[Stickboy]

I'm going to be putting biodiesel through my IP on a 13BT out of an 86 Bj74 soon and wondering if anyone knows whether the internal seals are made of viton or some other alcohol resistant material.

I've gone through replacing everything else and it'd be the biggest shame to have some o-ring crap out and fail.

Anyone have any idea of when Viton was stock in the 13BT injection pumps? I have a 13BT (blue block) from an 86 BJ74.

-mike

 

[s79bj40]

i dont know about viton, but when they went to low sulphur here, the seals on anything with a rotary injection pump were badly affected if made before about 94 or so. So that might be the changeover time. I havn't heard of anyone having any trouble with the straight pumps though. Dont quote me on the dates, its prob wrong.