TracTuff Cam Tower Oiling Mod
The oiling system in these engines is under constant strain and unfortunately here lies most of this engines weakness. Wear in the cam towers is one of the problems we have seen as a result and and we are sure that once you understand the routing of oil through the block, you will understand this mods value.
Number one intake cam journal is spoiled by being the only one fed from the VTC system and the remaining journals are ALL fed pressurized oil through the lower portion of the number two cam tower. For the type of use Honda expected from this engine this might be considered fine or adequate. Problem is... we're not exactly doing what Honda intended, are we?
The oil entering #2 cam tower not only lubricates that journal but also fills the hollow camshafts, travels through and lubricates each journal along the way. Much like a sprinkler system with too many heads on one circuit... the volume and pressure found at the end is greatly reduced! The lack of lubrication causes the camshafts to start wearing into the soft aluminum towers; mainly the caps.
We don’t see these problems all the time but do understand that it is impossible to tell whether or not your top end is falling victim to this issue without tearing it apart occasionally. Some people have found out in the most extreme way (see pictures below); by have the engine completely lock up! Add to this pre-existing phenomenon a set of hot cams, up-rated valve springs and higher rpm's... and you increases the stresses found in the towers, more specifically the oils film strength or lack thereof. We believe that these common mods will only excite the problem.
Option "Customer Set - We Mod Yours" REQUIRES the lower portion of YOUR good number five cam tower and two VTEC rocker shafts to be sent in. Machining is usually performed within 24 hrs. of receipt and shipped back no latter than 72 hrs. from the time they are received. If you feel confident in you ability and would like to press in the rocker shaft plugs... we can provide instructions on how to do this yourself., eliminating the need to ship us your rocker shafts.
Option "TracTuff Set - Borrow Ours" REQUIRES the return of your complete cam tower set and two VTEC rocker shafts within 2 weeks to receive a core refund. The core(s) MUST be in good resellable condition to receive a credit. If you feel confident in you ability and would like to press in the rocker shaft plugs... we can provide instructions on how to do this yourself., eliminating the need to ship us your rocker shafts.
Option "TracTuff Set - Purchase Ours" REQUIRES nothing more than purchasing through our website but does not include rocker shafts. We will provide instructions on how to do the installation yourself.
Please inquiry about core availability prior to placing your order.