dohc head cc's ????
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Last edited by SappySE107 on Thu Jun 22, 2023 1:11 am, edited 1 time in total.
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Last edited by SappySE107 on Thu Jun 22, 2023 1:10 am, edited 1 time in total.
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Last edited by SappySE107 on Thu Jun 22, 2023 1:10 am, edited 1 time in total.
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Last edited by SappySE107 on Thu Jun 22, 2023 1:10 am, edited 1 time in total.
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- Peer Mediator
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The timing chain sprocket drives the belt pulley directly. All the snout of the I-shaft does is hold the two together. If there were a bearing surface in the front cover, you could lop the I-shaft off right behind the 1st cam bearing. Since there isn't a bearing surface in the front cover, you have to lop it off behind the second cam bearing... which only gets rid of 66% of it.Mach10 wrote:Be fun to remove it... If there was a better way to make it turn the cams, too :scratch:
Remote oil pump ftw? All that preoilling goodness...
Yes, you'll have to plug the cam holes with something in order to keep oil pressure, but crazier things have been done with production blocks.
If weight and rotating mass is a concern, I wonder how much material you could shave off the "blanks" between the cam bearings and still have it strong enough to turn the oilpump? :scratch:
Be a whole lot less complicated.
Be a whole lot less complicated.
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Absolutely negligible effect on moment of inertia... diameter's too small.
Oil pump driveshaft is 3/8" or 7/16", so only slightly bigger than that would be necessary. At that point it would probably be better to make an intermediate shaft from 7/16" drill rod with a bunch of blanks for the cam bearing journals pressed onto it.
Alternatively, press blanks into the cam bearing bores in the block and press bronze bushings into those blanks. Tiny oil holes would be all that would be necessary to adequately lube the drill rod and you'd get rid of the MOI of the bearing journals.
Oil pump driveshaft is 3/8" or 7/16", so only slightly bigger than that would be necessary. At that point it would probably be better to make an intermediate shaft from 7/16" drill rod with a bunch of blanks for the cam bearing journals pressed onto it.
Alternatively, press blanks into the cam bearing bores in the block and press bronze bushings into those blanks. Tiny oil holes would be all that would be necessary to adequately lube the drill rod and you'd get rid of the MOI of the bearing journals.
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THis would deffinatly be a problem for my proposed setup. I need to remove the cam, because the head gets the oil from the cam carrier feed. I would have to make a sealed bearing insert to hold the pulley in place. No need for brass and oil.
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- Series8217
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