A community of enthusiasts dedicated to Nissan's SR20DE/SR20VE/SR20DET engines.
Start here: forum search. Be sure to search on what you're looking for before posting a new thread.
You are currently browsing the forum as a guest. In order to access special features, the image gallery, and post you will need to be a registered member. Registration is fast, simple and absolutely free so please, join our community today!
If you have any problems with the registration process or your account login, please contact the administrator.
They're double spring. Brian Crower of BC Cams sells them so I don't know if they manufacture them or just rep them. Great price, but I was hoping someone had tested them prior to buying them...
I have it directly from BC that they're double. ;^)
VALVE SPRING/RETAINER KIT
Designed for high rpm, BC valve springs are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC titanium retainers are CNC machined from 6AL4V round bar titanium to exacting tolerances.
Spring Pressure:
Seat: 1.460" @ 88 lbs / Open: 0.950" @ 220 lbs / Coil Bind: 0.790" (no machine work required)
Mandatory to check valve guide to retainer clearance prior to operation.
_SHig
Last edited by SHigSpeed : 06-28-2007 at 01:48 AM.
have you used them in your vvl / are they vvl friendly? what is the max rpm on n1 cams?
there is no mention on bc webpage/catalog about sr20ve or vvl. and they are single. is there no difference for ALL sr20?
I called and spoke to one of the tech guys. They quoted something like $375 (I can't remember exactly) for the S/R kit, and around $200ish for springs only. I have all but ordered a set from SBR, but I was hoping someone had some direct experience with 'em.
SBR claims 9500, but no mention of which cams that's related to. I'll be running N1s and hope to bump 9000, but I don't think I'll have the breathing to go much higher at my price/pain threshhold! :^)
I called and spoke to one of the tech guys. They quoted something like $375 (I can't remember exactly) for the S/R kit, and around $200ish for springs only. I have all but ordered a set from SBR, but I was hoping someone had some direct experience with 'em.
SBR claims 9500, but no mention of which cams that's related to. I'll be running N1s and hope to bump 9000, but I don't think I'll have the breathing to go much higher at my price/pain threshhold! :^)
Stock VE springs are singles?
So, nobody's got these huh?
hmm...
_SHig
hmm, im not sure but im guessing these are the same ones sr20turbofreak had made.... if so your n1s will be safe to 10k
SR16ve about 50lbs seat and 135 open
SR20VE 55lbs seat and 150-155 open
N1 spring, 45lbs seat and 120-125 lbs open
Quote:
Originally Posted by SR20Turbofreak
Yes BC is making the parts custom for me at this time.
...will be about 80 lb seat and 220lb at .500" lift ( 12.7mm) These coil bind at about 14mm lift, maybe 14.5mm. These should be good to 9500-10,000rpm no problem.
How do these compare to the Freak springs then, are these the ones Charles developed?
To be fair to Charles, he did say from the start that the springs he developed would eventually be sold as a general release item through BC. The initial batch would've been more expensive as they were a custom order.
Nissan Pulsar Gti-R'91 - under constuction (sr20vet in the garage)
VVL tuning is such a soap opera...
