Gold .650s vs Comp 918s....
08-11-2005, 04:12 PM
#1
Gold .650s vs Comp 918s.... How do these compare? One is a straight spring, the other is conical...which is better?
I'm not worried about breaking a single spring, what I want to know is which one is more stable at higher rpms?
Weight is an issue, and I cant imagine the Golds with a Ti retaier are lighter than the 918s with a stock retainer.
Input??
I'm not worried about breaking a single spring, what I want to know is which one is more stable at higher rpms?
Weight is an issue, and I cant imagine the Golds with a Ti retaier are lighter than the 918s with a stock retainer.
Input??
08-11-2005, 04:13 PM
#2
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Depends on the cam.
Smaller cam, go with the 918's.
When it comes to weight....they Patriot's are MAYBE a pound heavier total kit.
I have both a set of 918's and a set of the PP duals in Ziplock bags. Very close in weight.
Smaller cam, go with the 918's.
When it comes to weight....they Patriot's are MAYBE a pound heavier total kit.
I have both a set of 918's and a set of the PP duals in Ziplock bags. Very close in weight.
08-11-2005, 04:45 PM
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Originally Posted by Brian@CompCams
Valvetrain weight is important down to the gram....much less a pound! As far as stability and harmonics goes..that 918 will walk off and leave a dual in the dust!
08-11-2005, 05:14 PM
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Originally Posted by Brian@CompCams
We have done testing up to 7,500 and upwards of .620" lift.
Brandon
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08-11-2005, 06:55 PM
#8
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Originally Posted by 99ssleeper
Wow...this is some good info!
Yes, valvetrain mass is impostant down to the gram. I like the fact that the Golds are duals...but I'm not betting the Comps would break with my cam (.588").
Yes, valvetrain mass is impostant down to the gram. I like the fact that the Golds are duals...but I'm not betting the Comps would break with my cam (.588").
I think these springs will handle a LOT more cam then peeps give them credit for, My limiter is set at 6800 with a FMS 11 on a 112 and I spray a 100 shot with no problem, the guys that designed the Gen III were on to something 
08-11-2005, 07:27 PM
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Originally Posted by Brian@CompCams
Noiser?....What thinking lead you to that? When we are talking about weight on valvetrain..we aren't talking about slowing your car down becaue you added a pound here or there. Valvetrain weight is important down to the gram....much less a pound! As far as stability and harmonics goes..that 918 will walk off and leave a dual in the dust!
Brian,
Can the #26120 Single Beehive spring (155lb.@ 1.88" and 377lb.@ 1.28" be adapted to work w/ lobes beyond the 918's limits by machining spring pockets, ect.?
08-12-2005, 08:14 AM
#14
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Originally Posted by Ferocity02
My Comp 918's floated my valves after 12k miles with stock retainers. They have been replaced with Patriot Gold duals and Ti retainers. Cam is a TR 224/224 114.
08-12-2005, 11:05 PM
#16
Originally Posted by PREDATOR-Z
All you had to do is shim them
08-13-2005, 06:40 AM
#17
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Originally Posted by Ferocity02
I'd rather not beat around the bush. They got some good time in. I am much happier with my Golds now. The power doesnt fall off at 5500 and the valvetrain noise has not increased as some said it would.
