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

Yehp.

You will need to measure machined seat height, the measure max installed height etc etc. The put thos figures and add the extra shim thickness to calculate spring pressure.

By the time you finish paying a machine shop to do this you will have purchased a set of springs and retainers. Why do a short cut that may cost you more in the long run, just do it the right way and purchase S&R $.02

Come on now; the guy is giving us some insight into how to do things in a different way.
Just look at the thread about his motor, there are quite a few things that have pushed the envelope, and are points of difference for him.

Well it depends.

The shims are listed at nissan for about $2.30 AUD. I didnt need to machine my spring seats. So its a cheap upgrade.

All that you need to pay for is the press labour which may cost you an hour or so of work. Lets assume $40 AUD (probably an over estimate). So for $55USD you have a cheap upgrade.

I honestly am not trying to knock Autech in any way. If one can do these things themselves it makes since to do because it will be a cheap upgrade, but if you start involving a machine shop (atleast the ones in MD) your out of pocket is going to be $$$$$$$$ , So while in it's own right Autech is being inovative and I would never discredit that (heck I didn't think of it), in the long run if your paying to get it done your better of with S&R upgrade for around the same price. As I said $.02, sorry Autech if my post came across as a put down rather than an option, my bad

Its all good dude!

Soemthign different is always questioned and rightly so.

But as i said - the cost is quite cheap - and GENERALLY doesnt need much work

THE downside is that you cant run big big lift in the future at the risk of coilbind. However going to that level you would be stupid not to replace the springs. For the N1 cam and a cam that pushes a little past the N1 lift this will be a cheap ideal upgrade.

I've thought things over and I will probably be revving tot 8K rpm max, and use cam gears with the N1 cams. To make the powerband more usefull.

What max rpm are safe with N1 cams at +2.5, -2.5 on stock S/R?

I would say like 8200 rpm just to be sure

^Did you guys have a rev limiter set? I was trying to see where I should set my limiter with my N1's. Did some searching and came across this thread.