OST-029: California here I come.....

[oldeskewltoy]

from another forum - non USA Wrote:California ? would those mod affect the ca emission drama on there ?

They shouldn't....... Nothing I've done is actually drastic. For the most part I'm just improving the original casting by port matching the seats-bowls-ports to more closely match the original design. The surface machining of .018" is not beyond the normal range. A multi angle valve job is not beyond typical. The slightly raised compression will not hurt either.

The client has selected to run a pair of MILD upgrade cams. He purchased 2 exhaust cams from Cat Cams 7105136 on my recommendation. They have the same timing as the OEM cams, they have a bit more lift, and a bit more duration... without it going to an extreme (emissions unfriendly)

from another forum Wrote:What are swirl generators? I can see everything else you pointed out thanks.

First apologies... the more common, and in this case correct term is actually "tumble generators"





This kind of tumble generator promotes lower air speed performance by causing the incoming air to rotate as it approaches the valve. The theory is it helps to fill the valve area better. It also may act as a passive emissions device... to further aid in air-fuel mixing so more complete combustion can occur.



More to come....