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Flowing the bigport head
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08-30-2007, 02:16 PM
Post: #6
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Only talking from research here:
Formula Atlantics & N2 specs look like they make bigports bigger - some atlantic pics i've gathered from surfing. ![[Image: AEU86 AE86 - ]](http://i212.photobucket.com/albums/cc67/bbq_chickenwing/atlantic-head3.jpg "AEU86 AE86 -") ![[Image: AEU86 AE86 - ]](http://i212.photobucket.com/albums/cc67/bbq_chickenwing/atlantic-head.jpg "AEU86 AE86 -") Make power above 6000rpm, they probably don't care about lowend? Motoman talks about making ports smaller... Heres something I noticed upon buying a 20v silvertop and had a smallport gasket around. Note the blacktop is meant to have even smaller intake ports (will confirm when that engine arrives  ). Though the valves area are HUGE! picture a trumpet intake design. ![[Image: AEU86 AE86 - ]](http://i212.photobucket.com/albums/cc67/bbq_chickenwing/20v-ST-head-vs-SP-port.jpg "AEU86 AE86 -") interesting to see port evolution for 4age made by toyota/yamaha |
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| Messages In This Thread |
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Flowing the bigport head - robokill - 08-29-2007, 11:35 AM
[] - thanhngo - 08-30-2007 02:16 PM
[] - oldeskewltoy - 08-31-2007, 09:20 AM
[] - irishtwincam - 08-31-2007, 10:53 AM
[] - oldeskewltoy - 08-31-2007, 08:24 PM
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