A shameless image thread for the enginephiles

All that has to do with the power train, gearbox, clutch, fuels and lubricants, etc. Generally the mechanical side of Formula One.
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Re: A shameless image thread for the enginephiles

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FightingHellPhish wrote:
19 Mar 2018, 06:41
strad wrote:
19 Mar 2018, 03:58
Any ideas what the pockets are for between the primary's? Cooling?
Not sure which you are talking about.
the port like holes in between the primaries.
& by "primaries" he actually means the voids between the cyl-head 'exhaust ports' - since in T-F applications..
..the exhaust header-pipe term "primaries" is redundant.. they don't use anything else downstream, like 'collectors'..
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Re: A shameless image thread for the enginephiles

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flynfrog wrote:
18 Mar 2018, 19:03
Any ideas what the pockets are for between the primary's? Cooling?
Intake ports on a sideflow head I assume.

Maritimer
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Re: A shameless image thread for the enginephiles

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Pretry sure it's just for weight removal. Those engines rely on fuel and oil to cool them so everything else is just taking ounces off.

PhillipM
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Re: A shameless image thread for the enginephiles

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They've got a ground finish on them, that's not just for weight removal, something is flowing through there.

3jawchuck
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Re: A shameless image thread for the enginephiles

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PhillipM wrote:
19 Mar 2018, 18:37
They've got a ground finish on them, that's not just for weight removal, something is flowing through there.
Not only that, there are what appear to be bolt holes right next to these mystery holes. I agree with you on it being a sideflow head.

I guess we're wrong: http://www.hotrod.com/articles/ccrp-100 ... el-engine/

I would be curious as to what those bolt holes are for. Brackets or something?

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Re: A shameless image thread for the enginephiles

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They're voids :lol: nothing flows there, and you guys say I'm seeing things. That's an Alan Johnson cylinder head, nice billet piece. They go for ~$6,000 USD a pop.
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3jawchuck
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Re: A shameless image thread for the enginephiles

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godlameroso wrote:
19 Mar 2018, 21:15
They go for ~$6,000 USD a pop.
Literally in some cases :D

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Re: A shameless image thread for the enginephiles

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That's a very strange void given the rest of the head is just milled finish - it's been hand ground/ported, and as pointed out, there are bolt holes to fit up a manifold.

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Re: A shameless image thread for the enginephiles

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PhillipM wrote:
19 Mar 2018, 22:32
That's a very strange void given the rest of the head is just milled finish - it's been hand ground/ported, and as pointed out, there are bolt holes to fit up a manifold.
The holes between the pipes here?
FightingHellPhish wrote:
18 Mar 2018, 08:42
Image

PhillipM
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Re: A shameless image thread for the enginephiles

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Yes, maybe it runs into the rocker cover? Or as said it's just lightening holes and someone's fancied them up for show :?:
Makes you wonder what the bolt holes are for though.

roon
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Re: A shameless image thread for the enginephiles

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Image

Image

Probably just for lightweighting. The extra bolt holes might be for different header designs.
Last edited by roon on 19 Mar 2018, 23:07, edited 1 time in total.

Maritimer
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Re: A shameless image thread for the enginephiles

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They don't open to anything so I can't see how they could be anything other than weight removal.

johnny comelately
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Re: A shameless image thread for the enginephiles

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exhaust side, no water cooling .......therefore....

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godlameroso
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Re: A shameless image thread for the enginephiles

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PhillipM wrote:
19 Mar 2018, 22:32
That's a very strange void given the rest of the head is just milled finish - it's been hand ground/ported, and as pointed out, there are bolt holes to fit up a manifold.
It's a billet head, every part of it is machined.
Saishū kōnā

PhillipM
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Re: A shameless image thread for the enginephiles

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Yes, but those are not milling cutter marks, they are grinding/honing marks, which you wouldn't normally bother with unless it was a port....or a show head.
Given the die grinder with the abrasive roll in the picture I guess they've just been tidied up for photos.