John -
If the fuel pump never shuts off, it is clear that you DO have a fuel
delivery problem. It is possible that the diaphram is ruptured causing a
fuel starvation problem at higher speeds thus pinking.
I would certainly check this item. A whole new pump is around $100 (for a
proper (?) SU) and a new diaphram is $20.
I can't guarantee that this is the problem, but checking the flow rate (at
least 1 pint per minute) and possible replacement of either the whole pump
or just a diaphram is certainly cheaper than most of the other remedies you
are thinking about.
Regards,
Lew Palmer
lew.palmer@uci.com
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Any ideas? My next steps appear to be a fuel pump and a distributor
re-curved for this cam. The local expert, who sells the distributor,
says that won't help much. The fuel pump is apparently a real SU, but
does not shut off ever... it gets much quieter when the system is
pressurized, but you can still hear it.
Thanks!
John M. Trindle | jtrindle@tsquare.com | Tidewater Sports Car Club
'73 MGB DSP | '69 Spitfire E Stock | '88 RX-7 C Stock
Home Page: http://www.widomaker.com/~trindle
"You are what you is. - Frank Zappa"
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