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1 Anonymous Users
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Re: Head work |
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Just popping in
Joined:
2003/1/7 15:37
From melbourne aust
Group:
Registered Users
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assuiming the engine is normally aspirated the inlet side is more sensative to porting and polishing as the engine is working to suck air in from the atmosphere into the low pressure region in the cylinder. in the exhaust stroke the cylinder has just fired and so the gasses in the cylinder are hot and expanded causing pressure in the cylinder this as well as the piston comming up the bore force the exhaust gasses out of the cylinder and past rough ports etc. this is also why exhasut ports. other parts of the exhaust system are more importaant than port matching and surface texture (do it anyway but it's not as important as inlet)
Posted on: 2003/2/19 15:31
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Re: Head work |
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Quite a regular  
Joined:
2003/1/15 7:28
From South Africa
Group:
Registered Users
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Ive heard it is the other way around care to explain?
Posted on: 2003/2/19 15:08
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_________________
Old Datsuns never die they just go faster
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Re: Head work |
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Home away from home  Joined:
2002/10/7 10:57
From Auckland N.Z
Group:
Registered Users
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inlet is more important than exhaust
Posted on: 2003/2/19 11:25
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Head work |
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Quite a regular Joined:
2003/1/15 7:28
From South Africa
Group:
Registered Users
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Is it best to do inlet and outlet ports on a a-14 head
Posted on: 2003/2/19 11:20
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_________________
Old Datsuns never die they just go faster
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