Topgunz - air to air upgrade

mikey1600

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?

"Z"en

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.

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mikey1600

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?

"Z"en

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?

__________________
610whp/462wtq A2A- 6.8s@100-200km (stock motor) / IG: minized123456 / 淬 Custom VQ Vortech-based supercharger parts made to order! https://www.instagram.com/p/CFUjDc5H...d=m0unws28pvk4

mikey1600

I'm actually running engine oil through it, so the stock 370z oil pump. The company here in Aus who upgraded it did that so it doesn't have the self lubricated part anymore, that thing is crap haha, so I've tapped into my sump for the return etc..

Thought it would get a higher peak figure with the higher rev range and shift into a higher range for the following gears, probably overthinking it lol

"Z"en

So you got your V-3 converted into engine-oil-fed version from SL? Awesome! What oil feed/return kits are you using? Any links? Have you replaced the stock bearings with the H/D ones or...?

__________________
610whp/462wtq A2A- 6.8s@100-200km (stock motor) / IG: minized123456 / 淬 Custom VQ Vortech-based supercharger parts made to order! https://www.instagram.com/p/CFUjDc5H...d=m0unws28pvk4

mikey1600

Yeah, I'll have to try dig up the invoice to show what's different.

Everything's been upgraded to better stuff like bearings etc. I'll be doing some pulley changes once the E85 tune is sorted on current gear, so basically it's had impeller upgrade/bearings etc.. it had the 9psi stillen pulley on it already so guessing 500ish wheel HP then see where the fuel pump/injectors are at before upgrading the pulleys. (I got the Aeromotive 340 and Idx1050's, so guessing pump upgrade needed here).