I'm getting a bit worried about the heat that I'm feeling on my supercharger after normal driving. I haven't been able to get a temp reading yet, but I CANNOT leave my hand on the bearing casing or the compressor housing for more than half a second, maybe a full second- it's that hot. Is this how it's supposed to be? I'd really like to figure this out BEFORE my bearings let loose...

Also, if this is how it was designed, it seems like there's an awful lot of heat making it's way to intake air, and negating some of the positive effects of the boost...

 

yes, it is supposed to get hot.

1. it is compressing air, compressing air generates heat.

2. it is in an engine compartment right next to the exhaust manifold, which is also very hot. so yeah, radiant heat too.

 

it also has hot oil flowing through it. The pulley side does get too hot though, thats why i'm cutting vents in my hood

 

Beat you to that, I have a carbon fiber vented hood already (got it to have air flow through my oil cooler

PS: This is my 3000th post!!!

 

who wants one of those don't fit right carbon fiber hoods, i'm doing it to my stock hood ;) just a couple vents about the pulley side should do it

 

Mine fits pretty well actually, take a look at pictures of my car. Pretty minor gap at fenders, but once I get painted, I will fix the body work to make sure that gets fixed.

 

ya i was looking at the ait hood dan garner runs, but its mad expensive and modding the stock hood is free $$$ lol

 

Good point. If you are going to do that, I would suggest getting an oil cooler to take full advantage of the hood vents. I have mine and love it. When I went to scion united in vegas, my oil temps didn't go above 185-195 (even when it was 100+ outside)

 

Maybe down the road i'll pick one up, would have to find a place for it, my heat exchanger for the a/w intercooler will be taking up the whole lower grille area. Gotta finish that project first and I'll think about the oil cooler.

 

Mine is in the upper grill area. Let me know if you need any help or anything (but I am pretty sure you will have that handled)

 

exhaust heat can be solved by heat wrap(steel headers only), oil cooler for the oil heat, better radiator/fan combo for coolant temps, trans cooler if its auto, cai for intake heat, and meth injection, i wish they made ram-air aftermarket hoods, looking into buying a low profile scoop and having it molded and painted like factory to help with the heat issue

 

I realize that compressing air generates heat, and that there's heat under the hood, but the supercharger heat seems excessive.
Based on what I've seen, the supercharger pulls oil into the bearing casing from the oil pan on startup, but there's no oil circulation- it simply uses the oil that it pulls for lubrication, and pulls more if it needs it (i.e. oil breaks down) Please correct me if this is wrong.
I'd love to use an oil cooler for the supercharger, but based on how the supercharger uses oil, it seems that the effect would be very small at best.
Is anyone using an oil cooler with the NST 9.5 pulley, and what are your results? Also, does this cause the A/F ratio to drop too low at WOT?

 

just cut a hold in your hood for some mass air flow that should cool it down. lol

 

oil gets the the s/c via high pressure (60-70 psi) and it circulates with the rest of the oil passing through the engine.

 

Start with an oil cooler setup
Then work on hood vents or engine bay air flow
Then move on to coating your header or a headsheild/heatwrap

I wouldn't work on boosting more out of the S/C until you can better manage the heat, otherwise it will be a quick death to seals, bearings, etc...

 

oil cooler doesn't help the pulley side bearings though which are the faulty ones that tend to die from heat more quickly than the oil cooled blower side bearings. I agree that those are good steps to take, but I differ on their order.

 

Thanks guys.

 

Whoa... old thread. My fault.