Cosworth Cams
Jun 11, 2006, 04:09 AM
#31
The Cossie M2s give a 110 deg LSA, like the HKS cams. However, the LCs for the Cossie cams show that if installed straight up, the Cossies are like HKS cams installed at +1.5 Int / +1.5 Exh. So, if one wanted to run the equivalent of HKS 280s at +2/0, he'd install the Cossie cams at +0.5 / -1.5. If he wanted to run the Cossies at the equivalent of HKS at -3/-1 (more top end), he'd set the Cossies at -4.5/-2.5.
The nice graph you pointed to at norcalevo.net shows what one gets with the HKS 272s, when set to +1/-1, which is a setting that I always recommend for the HKS 272s for best all-around street performance. In that graph, the longer valve timing of the HKS 272s is what gives the broader hp/tq bands vs. the factory cams. Where cam timing is concerned, the tighter LSA of the +1/-1 setting he used for the HKS 272s vs. the factory cams at 0/0 (106 deg vs. 110) is why the larger HKS cams spooled ~250rpm quicker than the factory cams.
More hp, more tq, larger power bands and faster spool. It's definitely like having your cake and eating it too.
The nice graph you pointed to at norcalevo.net shows what one gets with the HKS 272s, when set to +1/-1, which is a setting that I always recommend for the HKS 272s for best all-around street performance. In that graph, the longer valve timing of the HKS 272s is what gives the broader hp/tq bands vs. the factory cams. Where cam timing is concerned, the tighter LSA of the +1/-1 setting he used for the HKS 272s vs. the factory cams at 0/0 (106 deg vs. 110) is why the larger HKS cams spooled ~250rpm quicker than the factory cams.
More hp, more tq, larger power bands and faster spool. It's definitely like having your cake and eating it too.
Jun 11, 2006, 03:01 PM
#34
Originally Posted by Ted B
The Cossie M2s give a 110 deg LSA, like the HKS cams. However, the LCs for the Cossie cams show that if installed straight up, the Cossies are like HKS cams installed at +1.5 Int / +1.5 Exh. So, if one wanted to run the equivalent of HKS 280s at +2/0, he'd install the Cossie cams at +0.5 / -1.5. If he wanted to run the Cossies at the equivalent of HKS at -3/-1 (more top end), he'd set the Cossies at -4.5/-2.5.
The nice graph you pointed to at norcalevo.net shows what one gets with the HKS 272s, when set to +1/-1, which is a setting that I always recommend for the HKS 272s for best all-around street performance. In that graph, the longer valve timing of the HKS 272s is what gives the broader hp/tq bands vs. the factory cams. Where cam timing is concerned, the tighter LSA of the +1/-1 setting he used for the HKS 272s vs. the factory cams at 0/0 (106 deg vs. 110) is why the larger HKS cams spooled ~250rpm quicker than the factory cams.
More hp, more tq, larger power bands and faster spool. It's definitely like having your cake and eating it too.
The nice graph you pointed to at norcalevo.net shows what one gets with the HKS 272s, when set to +1/-1, which is a setting that I always recommend for the HKS 272s for best all-around street performance. In that graph, the longer valve timing of the HKS 272s is what gives the broader hp/tq bands vs. the factory cams. Where cam timing is concerned, the tighter LSA of the +1/-1 setting he used for the HKS 272s vs. the factory cams at 0/0 (106 deg vs. 110) is why the larger HKS cams spooled ~250rpm quicker than the factory cams.
More hp, more tq, larger power bands and faster spool. It's definitely like having your cake and eating it too.
cuz i guess i asked the wrong question... i was wrong to assume that the cossies were more like the 280s when i'm not really sure WHICH cam they're more similar to.
Jul 31, 2010, 07:53 PM
#38
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hi i have a set of 272 cosworth cams in my 7 and without dialling them in they made 310 hp at the wheels.
i get them dialed in this week and was told by my employer my 7 will be at 350 hp, i rate them alot a cood lumpy cam and heaps of power through all gear changes.
i get them dialed in this week and was told by my employer my 7 will be at 350 hp, i rate them alot a cood lumpy cam and heaps of power through all gear changes.
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