Thread: Please Post Up If You Have A SR20VE Motor With N1 Cams On Stock Springs & Retainers

N1 cams with stock springs and retainers checking in. I run this car to 8500RPM frequently with no issues (street/strip/road course) for 2 years now.

are there any differences in springs between the 16VE and 20VE?

Identicle.

The genuine N1 valve springs are made of a different material - and wont suffer from valve bounce like the 16ve/20ve springs do.

A neat little trick i use on my builds is to shim the seat of my vavle springs. Shimming them up a little increases your nose pressure but still gives you enough room before coilbind.

I could be wrong but I swear I remember hearing that the regular 16 have slightyl less seat pressure then the 2.0s

lol... imma about to ditch my sr16's for some n1's reving to 8500 rpms on stock s&r's

I hate to ask it but is anyone making power out at 8500 or higher? Most of the dyno graphs I've seen indicate that peak hp and torque are well below 8500 (peak hp~@8k)
(peak tq~@7k). I haven't taken my ve to the drag strip, so I don't know if taking it out higher would net quicker times. I'm just asking if spending time where your not making power is beneficial, especially with consideration to the possibility of valve float.

My engine isn't built yet, but I'll be running N1's with BC S+R....will be revving it up to 8500rpm. I gather they aren't neccesary but why not. If I'm doing 8 hours of track time in a day...to be completely sure on the valvetrain, running aftermarket springs and rets is fine by me.

yeah not many are making peak past 7500rpm, its handy on the strip to keep it in 3rd for best times.
It also means you are right in the meat of your powerband when changing up.
I like the extra room on the circuit too at certain corners

I shift at 9k in first just because the tires are spinning so bad that if I shifted to 2nd while the tires were spinning at 8k-8.5k, I would be out of my powerband and bog slightly once 2nd was engaged. Every other gear I shift at 8.5k normally.

My last motor peaked at 8.6k, with the right header and intake the N1 cams do a pretty good job up there on a 2.0..