Asked Questions - Modifications
|Cam cover breather modification
What is the reason for the cam cover breather mod, should this be done to
all competition engines no matter the level of tune?
Answer: The breather mod we would recommend on all wet sump engines for road,
track day or club motorsport. If you are dry sumped using our own dry
sump system, we would run the engine completely sealed (Except for the
drysump tank) and there is no need to carry out this modification. The
modification prevents a build up of oil in the cam cover breather which
can be sucked into the engine intake system causing engine failure either
by a hydraulic effect or detonation from the oil being in the combustion
chamber. The other problem is simply the reduction of oil in the sump.
(Our Drysump systems has very large scavenges which are able to produce
a vacuum we only recommended this modification for our own systems if
you carry out this modification on system with to smaller scavenge pumps
you could pressure engine causing serious damage).
The only other modification we do to the breather system is on the works
cars. We used to insert tubes into the cylinder head and do a completely
different modification to the cam cover. But this is not a modification
we would suggest for club level due to the fact the modification costs
in the region of £300 and is not possible for the individual to
carry out without full machine shop facilities.
Links: Set Up Information
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I modifying an XE engine for RWD installation. I'm machining / blanking
off the distributor mounting flange, and will then have to shorten / blank
off the camshaft. Do you recommend cutting the camshaft prior to the additional
bearing journal, and removal of this as well?
Answer: Yes, we would normally make the exhaust cam the same length as the
inlet cam. There is no need to retain the last bearing
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