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At 07:38 PM 5/19/2003 -0400, you wrote:
Al,
Are you using the stock 20B pump, or a 13B pump?
Mark S.
I don't know. David Atkins bills it as "Lightweight aluminum water pump
housing and a new heavy duty water pump." It could well be the stock
20B pump.
Al
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Al,
The stock 20B pump has the 2-thermostat water pump housing. Also, the water pump casting is longer than a 13B, repositioning the CL of the shaft/pulley. Enclosed is a picture of your engine showing a single thermostat housing, so it looks to me like you are running a 13B housing and pump. What I don't know is if the 13B turbo uses a larger impeller than the n/a 13B. I have a n/a 13B pump and the impeller is .150" smaller than the 20B impeller. I'll keep asking until I find out for sure. It looks like the 13b housings are the same. That is based on measurements I took last night to see if the 20B impeller could be installed on the 13B pump.
Just for the record, the reason I'm going through all this is that the 13B housing is 2+ pounds lighter than the 20B housing, not sure about the pump, but I'm guessing it is about 1/2 lb lighter.
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