Quote:
looking over Kevin's engine build, why did you guys put in expansion plugs in the front lifter gally holes that go to the cam plate?
i don't see anywhere that they are required and if put in place seems like they would render the oil grooves in the cam plate useless.
IMO, the oil grooves in the cam plate are already useless and nothing but a further leak in the oil system. Think about it: oil is coming out the front cam bearing and front engine bearing and dripping & spraying onto the cam gears and chain, which is then throwing oil all over the place under the front cover, further oiling the fuel pump arm and eccentric.
Also, Pontiac V-8s, which are similar in design in this area do not use them, but the Pontiac gets its oil for the timing chain & gears from those two front bearings. Pontiac had no problem with lack of oil to the timing chain.
The only real purpose of the front cam plate is to keep the cam end play within spec.
On edit: one more thought: motorcycle drive chains, which are under a lot more strain than cam gears & chains, get by with very little lubrication since they are exposed to the elements.
Craig
This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=84837