[Geo]

and how many ponies do we get with the FWD SR20DET

There is no such thing as a FWD SR20DET. They are all equipped on AWD platforms. Fortunately for us they are an almost 100% direct swap (3 bolts don't get used).

For answers to your questions, go to the forced induction forum.

 

[Geo]

Re: 150hp is what Nissan claims.

Long story. All Primera JDM SR20 motor HP is rated 150 hp.

That's 150 ps, not hp. Small difference, but a difference none the less.

Only first generation SR20DE motor came with sodium filled valves seen on DET motor.

Do you have documentation of this? If so, please cite it. I am completely unaware of any SR20DE that ever came with sodium filled valves. I believe this is a DET only item.

When new P11 Primera came out back in 1995, Nissan made the another changes on that motor. If you look at the intake manifold, that's the biggest difference. Yup, that's the famours "high port->low port" thing. They lowered the Redline from 7500 > 7000 also.

Actually, it's 7100 rpm.

The new engine came with roller rocker arms

Not initially.

They all came with 10.0:1 high compression pistons with ECU with agressive fuel map and require 100 octane premium gas.

That would be 100 RON. It's quite different from US pump gas octane number. Our pump octane numbers are (r+m)/2, or in other words, and average of research octane number and motor octane number. Gasoline with a 100 ROM is probably about the same as our US 93 octane.