flatchat(Chris)
Supporter
I'm with Jac as well --the evidence :- www.gt40s.com/forum/lola-t70-lounge/18681-build-diary-rcr-lola-t70-spider-2.html :embarassed: post #78
I'm with Jac as well --the evidence :- www.gt40s.com/forum/lola-t70-lounge/18681-build-diary-rcr-lola-t70-spider-2.html :embarassed: post #78
Cavitation on a pressed steel impeller with 'straight vanes' like that causes imbalace & localised pressure gradients on or around the impeller, this leads to flexing of the steel & eventual failure at the point closest to the hub. impeller design is pretty hard to get right & especially in this case where it has to live over a wide RPM band... the older cast iron impellers with curved vanes as fitted to early 260/289/ Boss 302 etc were probably overbuilt by comparision. While this pump might be sold by Ford Racing it is a long way from being a race quality item... I think its Stewart pumps in the USA that make the good stuff....you might also need to change the front cover to the early 289/302 item to work with them..
I imagine it is what Sebring and Lemans were like in the 50s when privateers had a real shot and the factories weren't heavily involved.
.
Radiator is off for repair now, if it can be repaired. All depends on where the leaks are located and if they can be welded or not.