I ran the Peterson dry sump pump at Mid Ohio for the last time this past weekend.



The third pressure section cracked and sprayed oil onto the headers. There was a small fire involved, but no injuries.



This is the third and last failure of this type, as there will be no Petersons in my future until I can have a steel or larger aluminum pressure section custom machined. Is it not a shame that I cannot pay $1,400.00 for a new pump and run 100 PSI for even 8 weekends without a pump failure.



This last pump was overhauled by Peterson so as to eliminate any possibility that I was making an error in assembly.



I am told that the early round Peterson was a very good pump. The failures are in the current production rectangular pump.



As it turned out, we lost an easy third place.



Lynn E. Hanover

[quote name='Lynn E. Hanover' date='Jun 9 2005, 07:40 AM']I ran the Peterson dry sump pump at Mid Ohio for the last time this past weekend.



The third pressure section cracked and sprayed oil onto the headers. There was a small fire involved, but no injuries.



This is the third and last failure of this type, as there will be no Petersons in my future until I can have a steel or larger aluminum pressure section custom machined. Is it not a shame that I cannot pay $1,400.00 for a new pump and run 100 PSI for even 8 weekends without a pump failure.



This last pump was overhauled by Peterson so as to eliminate any possibility that I was making an error in assembly.



I am told that the early round Peterson was a very good pump. The failures are in the current production rectangular pump.



As it turned out, we lost an easy third place.



Lynn E. Hanover


[/quote]

Hey Lynn ...not this one huh?

I been sitting on this for years since I sold my GT2.

That sucks, I know stan is running a single stage peterson on customers cars, and hasnt had a failure yet that I know of.

[quote name='banzaitoyota' date='Jun 9 2005, 10:08 AM']That sucks, I know stan is running a single stage peterson on customers cars, and hasnt had a failure yet that I know of.


[/quote]



what is causing these failures? vibration? flaws in casting? improper mounting?

[quote name='Lynn E. Hanover' date='Jun 9 2005, 04:40 AM']II am told that the early round Peterson was a very good pump. The failures are in the current production rectangular pump.



As it turned out, we lost an easy third place.



Lynn E. Hanover


[/quote]



thats not good at all! i hate it when you have to loose because someone else got cheap

[quote name='Cheers!' date='Jun 9 2005, 07:13 AM']what is causing these failures? vibration? flaws in casting? improper mounting?


[/quote]





The pump body is just too thin in the pressure section. The top corners just crack through from fatigue. The round Peterson had no such problems that I have heard of.



Lynn E. Hanover

[quote name='l8t apex' date='Jun 9 2005, 05:25 AM']Hey Lynn ...not this one huh?

I been sitting on this for years since I sold my GT2.


[/quote]





That is the good Peterson. On a nice looking mount also.



Lynn E. Hanover