Can't go wrong with this oil pan! To the best of my knowledge, this is the only true "active" design for our beloved Z!

I have it. It works great. I developed a small crack leak but it was welded back and problem fix. Not sure if I hit something or bad weld. Ps. I have a used one with a very small bend that I could sell. No leaks just replace it once the nose got fix. I drove it for 2 weeks without an issue. Just bought a new one since my auto insurance pay for a OEM one on the estimate.

Hey guys, so finally got the car tuned, limited to 6500RPM at the moment, mafs were maxed out, ordered new ones with UpRev.

made 320KW at the wheels or 430rwhp on 98 pump fuel here in Aus, they said should get another 15-20KW at the wheels once the limiter is raised to normal (Previous was 370HP with the standard stillen gear and frozen boost heat exchanger with a custom tune on same dyno).

So here's the questions as I'm going E85 straight from here;
If I change these 2 pulleys which I've seen some people do and pulling 650-700rwhp, what Belt will I need to run? - https://www.summitracing.com/int/par...-300/overview/
https://www.summitracing.com/int/par...-347/overview/

Also, has anyone upgraded to say a Nismo oil pump/aftermarket pump and raised rev limiter?

Stock Gates 8PK562 will be OK but you may experience a little bit belt slip under high engine RPM (starting from 6000). Getting a 36225 3" idler will be better. Or you can use RPM belt but it will be more brittle. The degree of slip depends on the setup of preset boost. The higher the boost the higher the chance you encounter belt slip.

Cheers mate! I'll check out those item numbers, is the 3" idler instead of anything else I've posted or get that as well? This one here? - https://www.summitracing.com/int/parts/ado-36225

So pretty much pointless changing out oil pump/increasing RPM?

I prefer the one of Gates
https://www.amazon.com/Gates-36225-I.../dp/B002R74YU6

The effectiveness is the same to keep the tension as long as you make sure you get a 3" OD idler.

I see no reason to overrev your engine for SC'd Z especially if your using a self-lubricated head unit. The max RPM of your SC has already set a upper bond. Below that you can simply change the pully setup to get the power you need. Be sure to not go overboard to exceed its compressor efficiency otherwise the heat soak issue will make you beat a dead horse.

What oil pump are you using?

Is there benefit going to solid mount or poly motormounts for this kit to help reduce bracket/belt flex?

FWIW - I went solid motor mounts b/c there was so little clearance between my throttle bodies & the strut tower bar.

As everything is bolted to the motor I wouldn't think so. There used to be a custom support made for these.

I have been running this Kit for over 2 years, I have factory Motor mounts and have no issues.

Some people have had issues with the Stillen bracket flexing (hence the custom brace) but I think it was the the guys running a cog set up. I may be wrong.

Is this the 9lb boost pulley? My best measurement is it’s 2.85” but i could really use a caliper for this stuff. It was included with the kit but I didn’t use it cuz I’m an idiot as overboosting is hard to do at this elevation.
Seems like I should really be using it because I’m already running tbatt’s no-slip kit (on the 8lb pulley—like an idiot) and am guessing that’s better designed for the 9lb setup.
And using this 2.85” pulley for scale on the idler below (guessing maybe 2 3/8 sound about right?) that is the idler I need to change out to the gates 36225 which I think is a 3”?

If your running the Tbatt's kit, 2.87" pulley (a.k.a. the 9psi pulley) will be fine. No need to change its idler on the serpentine side.

Oh man! You hadn't been running the high boost pulley I included with the kit? That is totally why you are seeing such low numbers. Get that baby on there and re-tune. You will pick up some good power.

Yes, the stock tensioner will pick up the slack.

I had that exact support brace but sold it since I have never had issues with flex ,although I am only running 9.5 - 10 lbs of boost.