Vacumm Pump

[Rich Biebel]

Originally Posted by nemo963

What is the problem with Aerospace pumps, just wondering.

A friend had one.....it pulled very little vacuum. He was told to add a little oil every day he raced it. It still never worked very well and after he pulled it apart he found it was worn inside pretty badly. This friend doesn't race very often these days so the pump had very little use. He sent it back to Aerospace and got no help from them. He bought a Moroso and it works fine. I had a Moroso 3 vane for 3 seasons on my injected dragster. Sold the engine and the pump with it and it went 2 more seasons and was still working fine. The 3 vane Moroso pumps had a reputation for breaking either the set screws or the shafts. I took my Moroso apart regularly looking at those items but never had a problem and the pump worked very well for me.