Skip a ported upper (replaced by the Stillen manifold), but a ported lower (I went Z1), decent headers (I still have stock exhaust manifolds), test pipes (or good high flow cats) (I went Z1 test pipes) and a solid catback (I went with Borla for the sound) would be good mods for both NA and boosted. Again, TBs are a relative unknown, so if someone wants to chime in about gains from the 70mm TBs over stock, please do!

Hold off on fuel mods and things like that since you'll have everything apart anyways for the build and its convenient to knock those out with the SC build.

Well, crap. Been doing WOT pulls and making 5-6 PSI on my first WOT. Did second log, then popped hood to inspect for belt slip (I do have tbatt kit but not installed). Quickly see a problem—first belt casualty. Does that look normal or do you think the pulley migrated causing the snap? Perhaps that rectangular locking key was forgotten to be installed? And if so and i can’t find it is that anything i can come up with?
Will plan to replace belt and inspect perhaps change to tbatt kit on wed or thurs when i get time off and wire ethanol content to ECU

Did the bolt come out of your sc pulley?

Either that, or never installed. Now that i’m ordering a belt (and i think i found the part i need 8-Rib Vortech Drive Pulley Retainer Assembly 8-Rib Vortech Drive Pulley Retainer Assembly [V8R101-002] - $10.99 : SuperchargersOnline, Worlds largest Supercharger Resource. Get Serious About Power ) i’m very tempted to just go to the 9lb pulley, is this what i want? http://www.superchargersonline.com/i...oducts_id=6830 And also, what again was the 7 rib 2.85” pulley for again? Still have that sitting around.
Time to review my tbatt kit parts

Here is the 9lb pulley that you want, it goes on the serpentine side.

https://conceptzperformance.com/stil...13_p_19055.php

The 2.85 pulley is an upgraded pulley for the sc. Also, if you install the 2.85 sc pulley you'll need to install a 3.00" idler pulley to take up belt slack.

Whoa. I can see the bolt sitting there! Did you seat that pulley all the way on? You don't remember installing the key?

Oh, I remembered (to remind the mechanic about it) and make sure it was taped to the pulley. Local guy recommended using loctite as he’s had them loosen/come out before so can’t be for sure. Have new belt and retainer key on order, and will put on tbatt’s setup while at it.
Luckily i don’t see any oil leaks. Looking at the orientation of the pulley i could see how that could pull on and maybe bend the shaft or seal. I think that may have been what happened to the used blower i got. Also I don’t think the bolt on the far right (what i assume you see is from the pulley—that one is on. Probably the bolt that the old intake bolted on to.

Ok. Send me a pic of it when it is deemed "ready to start". I want to make sure you have it lined up properly.

Z1 shows 7whp/7wtq on the EPS 70mm set, but that's NA

Does this SC kit allow the stock engine located body brace of the nismo models remain oem...

Are you talking about the crash/tow bar? That will need to come off and can either be modded or you can put the Fast Intentions one on.

What size 8 rib pulley do these come with? And I assume we go smaller on the serpentine supercharger side rather than the 8 rib for higher boost due to belt tension issues? I was looking at 928 and they sell these sur-grip pulleys. Anyone running them and think they're any good? https://928motorsports.com/parts/8ribpulley.php The tbatt kit addresses slippage on the serpentine side but wasn't sure if slippage is an issue on the input side since my issue was not due to belt slippage in particular. And this kit already has the impeller upgrade, correct? Or is it just upgraded Si bell housing?

I can answer a couple of your questions. I've got bad belt slippage on the jackshaft pulley, sc side and I do have a sur grip pulley to put on it when my sc comes back from 928. My sc pulley is a high traction from vortech and I had no belt slippage on that one. The 928 pulley is really gritty, I can't imagine I'll have any slippage with it.

Topgunz's kit comes with the v3 Si supercharger, it has the Si impeller which is an upgrade from the Sci.

"I've got bad balt slippage"--says the guy making 12 and a half PSI and nearly 600whp?:gtfo2:

Downsides I've heard about the sur-grip is belt dust getting on intake filter, and replacing belts more. I think for the time being I'll go with standard until I decide I have bad slippage as well. Will be excited to see your new setup and what you do with the intake.

But if I wasn't getting belt slippage and boost wasn't dropping off completely at 6900rpm, maybe I could have hit 600. :rofl2:

My belt is wearing pretty quickly as is with the belt slippage. We'll see how it holds up with the sur-grip.

Hopefully I'll have some updates on the other things we're working on in the next couple of weeks.