by Xelmon Tue Dec 02, 2014 10:29 pmSo after some digging around intakes I noticed that some Cliffy intakes have runners on the inside, some don't, some have jackets, some don't.
It seems like "early" manifolds didn't have water jackets or get tapped in the first place.
I use "early" as I have yet to find a clue to when Cliffy started making these intakes.
As one of the posts over at inliners.org pointed out, the very early ones can be identified by the runs inside the intake.
According to Better of the Pack, guys used to have to grind out 3 of the runs closer to cyl 3/4, as it thinned it out the mixtures on those cylinders. I could definitely see this being an issue, and I'm curious as to why they cast it that way in the first place. Those are essentially mini-dams inside the intake.
It was probably a good idea at the time.
Pictures of intakes with these runners are few, so I am curious as to how old those intakes are.
Edit: Fixed grammar and terminology.
It seems like "early" manifolds didn't have water jackets or get tapped in the first place.
I use "early" as I have yet to find a clue to when Cliffy started making these intakes.
As one of the posts over at inliners.org pointed out, the very early ones can be identified by the runs inside the intake.
According to Better of the Pack, guys used to have to grind out 3 of the runs closer to cyl 3/4, as it thinned it out the mixtures on those cylinders. I could definitely see this being an issue, and I'm curious as to why they cast it that way in the first place. Those are essentially mini-dams inside the intake.
It was probably a good idea at the time.
Pictures of intakes with these runners are few, so I am curious as to how old those intakes are.
Edit: Fixed grammar and terminology.
