Dear Dimitri,
I am restoring a 1969 Aston Martin DBS. My site is OHMSSDBS.com. I am very interested in your posts on the MR2 Spyder pump. I plan on using one on my DBS as a replacement for the troublesome and leaky ZF/Adwest unit. I have a few questions for you, and feel free to write to me on my e-mail: vivlempereur@hotmail.com.
There is a boss on the cast body of the pump, which has a hole in it. It is directly opposite what looks to be the high pressure output side. Do you know what this is for? Some sort of vent? I am perplexed by it.
Just purchased one from Toyotoa today, and I will be using your diagram to install. Would you recommend a cooler placed right after the pump, on the high pressure side, or on the return end?
Thank you, Tom