Valvespring Advice?
Valvespring Advice? Turbo Build Valvespring Advice?....The motor will essentially a stock long block for now just to see what we can push....I want to get some recommendations for what valve springs to use, as I am sure even on a stock cam the added cylinder psi would be pushing it on stock springs...
So stock 98 heads, stock cam, seeing about 8psi from a T70, staying around 6200 rpms, what would be the best spring set-up and are Ti Retainers recommended?
So stock 98 heads, stock cam, seeing about 8psi from a T70, staying around 6200 rpms, what would be the best spring set-up and are Ti Retainers recommended?
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Set the spings up at the propper installed height with a good set of pushrods with the correct preload and you'll have a happy stable valve train.
As I was getting ready to make my purchase Comp released their Tool steel retainers for the beehive springs, So I got those. They were less than 1 gram heavier than the Ti, but are made of steel, which I'M sure wont wear away. Ti retainers can wear away over time.
I setup my springs using distance from coilbind, not by using installed height too. Might want to take that into consideration.
Last edited by SweetS10V8; May 22, 2009 at 07:12 AM.
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You need to.... Beehives are the way to go in many applications. Many people make great springs. Pac springs are becoming very popular, Comp totally redesigned the 918. PSI is still out there... I ran the new (silver) 918s in my old setup and am going to run them in my new setup, CNC LS3 heads and Comp 219/235 .607/.621 113+4 A lot of people dont realize this either, some of the beehives can out perform the dual springs. But people still think in terms of "bigger/more expensive is better"
I studied this, and noted a 6 gram difference, The stock ones were 11g and Comp Ti retainers were 6g, I had to borrow a retainer from a friend so I dont knwo what the wieghts of other Ti retainers are.
As I was getting ready to make my purchase Comp released their Tool steel retainers for the beehive springs, So I got those. They were less than 1 gram heavier than the Ti, but are made of steel, which I'M sure wont wear away. Ti retainers can wear away over time.
I setup my springs using distance from coilbind, not by using installed height too. Might want to take that into consideration.
I studied this, and noted a 6 gram difference, The stock ones were 11g and Comp Ti retainers were 6g, I had to borrow a retainer from a friend so I dont knwo what the wieghts of other Ti retainers are.
As I was getting ready to make my purchase Comp released their Tool steel retainers for the beehive springs, So I got those. They were less than 1 gram heavier than the Ti, but are made of steel, which I'M sure wont wear away. Ti retainers can wear away over time.
I setup my springs using distance from coilbind, not by using installed height too. Might want to take that into consideration.
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Good point about overkill but IIRC the 1518 and 1218 are about identical if not exactly the same.
Cost is about $100 difference, both are true drop in so no changing of anything else either.
Ok, so you guys are saying that anything more than the PAC 1218s would probably be more seat psi etc than I need or want with stock cam/lifters?
Would the PAC 1218s still be the way to go if I decide to run a Z06 cam?...I dont really plan to spin much more than say 6200rpm...
Thanks for the input guys!
Would the PAC 1218s still be the way to go if I decide to run a Z06 cam?...I dont really plan to spin much more than say 6200rpm...
Thanks for the input guys!
Last edited by LS1Silverado05; May 27, 2009 at 02:29 PM.
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Ok, so you guys are saying that anything more than the PAC 1218s would probably be more seat psi etc than I need or want with stock cam/lifters?
Would the PAC 1218s still be the way to go if I decide to run a Z06 cam?...I dont really plan to spin much more than say 6200rpm...
Thanks for the input guys!
Would the PAC 1218s still be the way to go if I decide to run a Z06 cam?...I dont really plan to spin much more than say 6200rpm...
Thanks for the input guys!
The extra processing steps on the 1518, in my opinion, are worth the extra money. They will make for longer life and a slower rate drop over time.
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Yeah, which would be Associated springs.