dunhamfield
Well Known Member
To the other four owners of a Cragar Blower intake manifold, Pay attention!!!
I have about 3K miles with this Cragar intake manifold when it lost the keepers from the PSI releif valve. The valve is the same as many 60's HP valves that are in the head.
Long story short.... It backfired and did its job by releiving the manifold PSI but in doing so lost the keepers that were ingested. Luckly all the other parts were too big to make it past intake valves. I have scoped inside all cylinders and found one keeper in #2 cylinder and suspect that the other keeper made it out of #3 exhaust.
My fix to this not happening again is as follows.
I threaded the valve stem and drilled it for a cotter pin. The stem is 3/8 so I used a 3/8 24 castle nut and cotter keyed it.
I have posted before and after pics.
If this does not work out, I will post the results.
AD stands for Airworthyness Directive. I cant call it a recall as it is a 60's model manifold. I just want to share the problem with others that have this manifold.
I have about 3K miles with this Cragar intake manifold when it lost the keepers from the PSI releif valve. The valve is the same as many 60's HP valves that are in the head.
Long story short.... It backfired and did its job by releiving the manifold PSI but in doing so lost the keepers that were ingested. Luckly all the other parts were too big to make it past intake valves. I have scoped inside all cylinders and found one keeper in #2 cylinder and suspect that the other keeper made it out of #3 exhaust.
My fix to this not happening again is as follows.
I threaded the valve stem and drilled it for a cotter pin. The stem is 3/8 so I used a 3/8 24 castle nut and cotter keyed it.
I have posted before and after pics.
If this does not work out, I will post the results.
AD stands for Airworthyness Directive. I cant call it a recall as it is a 60's model manifold. I just want to share the problem with others that have this manifold.