Spray bar required with Comp cams?
Posted: 25 Apr 2016 19:34
I see that Comp list their cans as "solid" core. Does that means they don't have the provisions for oil feed to the lobes, and require a spray bar?
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Interesting. Since my original post, I've found several discussions on-line where people with 240 and 260z's have received Comp cams that are internally oiled.510wizard wrote:Yes, and most high lift, long duration cams require a spray bar even if it has a drilled core (which is plugged for spray bar use).
Sounds like your cam was ground from a billet which do not have internal oiling.Benny wrote:Interesting. Since my original post, I've found several discussions on-line where people with 240 and 260z's have received Comp cams that are internally oiled.510wizard wrote:Yes, and most high lift, long duration cams require a spray bar even if it has a drilled core (which is plugged for spray bar use).
Have you used a Comp cam for an L18/20 yourself, and seen it plugged? Most of their grinds are not really high lift or long duration.
Who are you talking to? I don't have a cam....I'm asking a question about one.Three B's Racing wrote:Sounds like your cam was ground from a billet which do not have internal oiling.
240/260s from the factory are externally oiled (spray bar), so if the Comp Cams 6cly are gun drilled then they would have to be plugged to use in the stock configuration (plugged in the sense that # 2 cam journal in 4 cly L-series, which supplies oil for internal cam oiling is plugged, not sure what journal in 6 cly L-series, my schooling is in 4 cly) I think that Nissan used a spray bar(6 cly) because the outer lobes/journals didn't get enough oil on such a long cam. There is too much oil loss if you try to use both spray bar & internal oiling. I haven't used Comp Cams (4cly) , but if they are regrinds on a stock core, then they are internally oiled especially if not high lift/long duration. Usually the cam manufacture will state when a cam needs to be externally oiled. Racer Brown did redrill the cam lobes for better oiling on his street cams. I drill out the oil jet to a bigger size in the block to increase the oil for the cam/journals on my street builds.Benny wrote:Interesting. Since my original post, I've found several discussions on-line where people with 240 and 260z's have received Comp cams that are internally oiled.510wizard wrote:Yes, and most high lift, long duration cams require a spray bar even if it has a drilled core (which is plugged for spray bar use).
Have you used a Comp cam for an L18/20 yourself, and seen it plugged? Most of their grinds are not really high lift or long duration.
Sorry Benny I was talking about your original post but put it in the wrong one "I see that Comp list their cams as "solid" core. Does that means they don't have the provisions for oil feed to the lobes, and require a spray bar? So I'll change my statement. Sounds like Comp Cams grinds their cams from billets"Benny wrote:Who are you talking to? I don't have a cam....I'm asking a question about one.Three B's Racing wrote:Sounds like your cam was ground from a billet which do not have internal oiling.
I just an email back from Comp. They tell me that the "Solid" note refers to the style of lifter (solid vs hydraulic), and that their cams are internally lubricated.Three B's Racing wrote: Sorry Benny I was talking about your original post but put it in the wrong one "I see that Comp list their cams as "solid" core. Does that means they don't have the provisions for oil feed to the lobes, and require a spray bar? So I'll change my statement. Sounds like Comp Cams grinds their cams from billets"
There,,,