964 cam horror
02-18-2015, 01:32 PM
#16
Instructor
Would adding a
be good advice to follow, or do we need a specific brand/formula for our cars?
02-18-2015, 05:02 PM
#17
Instructor
These were what mine looked like when I had the top-end refreshed 9000km ago. I have no idea what oil the previous owner was using. The cams needed some attention, too.
07-26-2016, 06:45 PM
#18
Great thread...
Here is my 1990 cam, 90000 kilometres..
What is general consensus about replacing with NEW cams, or having them sent to be built up and re ground?
My rockers appear fine in comparison, but should they all be reground to new spec?
Here is my 1990 cam, 90000 kilometres..
What is general consensus about replacing with NEW cams, or having them sent to be built up and re ground?
My rockers appear fine in comparison, but should they all be reground to new spec?
07-27-2016, 10:07 AM
#19
New cams absolutely need reground rockers. I have had cams hardwelded and reground without ever a problem-YMMV.
It's also worth noting that pitting damage can and is caused by hydraulic fracturing. Though the lessened ZDDP has exacerbated the problem it was around before.
It's also worth noting that pitting damage can and is caused by hydraulic fracturing. Though the lessened ZDDP has exacerbated the problem it was around before.
07-27-2016, 12:11 PM
#20
Three Wheelin'
I had Dougherty/drcamshafts regrind and parkerize my cams and resurface/rebush the rockers. Price was reasonable. I think that he's a one-man shop, so wait times vary. Mine took a little over a month. My last valve adjust was with 9k miles on the cams and all the lobes still looked perfect.
