Hey guys,
has anybody proven that a ported s/c will creat more hp or make this a little more efficient? Decrease/increase in boost/temsp? Any dyno numbers/ track times to support their ported s/c. Also, I plan to do this myself, so post any pics of your ported s/c so we can all see what kind of material was removed.

Thanks,
Nate

 

no not one person has posted gains as far as hp goes or e.t's but i believe some members got a 15* drop in iat2 temps

 

pls dont do it yourself, pay a professional to do it. Despite what people on here say its really not that easy to do it correctly and properly. yeah any idiot can grab a dremel and take off a bunch of metal, but it takes more than that to do it so it makes proper gains.

Think of it this way, if this mod is so simple to do and makes the blower so much more efficient, why does eaton who im sure has put years of research design and testing into the blower have it the way it is?

 

because gm gave them a certain criteria to follow so they made it to the specifications of the 2.0 ecotec just like we bitch stage 2 shoulda came with the car... i know its money issues but if the put so much reseach and development into it why is it so ineffiecient?

 

i have a few friends and we all ported our blowers, i have a stock pulley and figured id jus try it. I saw no difference but my IAT's are roughly 10-15 degrees cooler.

 

IAT's are cooler by about 10* and my boost went from 18.8 to 17.2. Track times are basically unchanged, throttle response is better (might be in my head?) and whine is louder. According to my aerforce guage I picked up 10hp

 

i mildly ported my inlet/ outlet and throttle body. mostly just smoothing things out. i didn't go to crazy. and i can't make a claim on IAT2 temps either. but, i did see an AVG. of 4-6 degree drop in coolant temp. from roughly 180*F to about 174*F. so it definitly helps. to what extent IDK.. but it's not as loud (whine).. i think i smoothed the silencer holes too much.

 

yeah I noticed my throttle response is a bit better dropped a few degrees in the IAT2's and it's a bit louder now. but that's about it. dropping in a set of ceramic ballbearing kit on it soon to see if that helps fight some of the parasitic loss

 

My intrest has been peaked. you got a link for me to have a look at the kit?

 

I've heard mixed answers to this, does porting/polishing the sc increase or decrease boost?

 

I have the site for em, just pics of the ones for the m90's but the guy does m62's also...
http://www.rollingperformance.com/snoutrebuild.htm

 

it makes same power with less boost

 

So potentially then, if I'm boosting 18lbs with a 2.6 pulley and then P/P the SC I would be around 16.5-17lbs on a 2.6?

 

decrease. you're making the area holding the air bigger, and less restrictive, allowing the air to flow more freely. BUT CFM should go up. meaning more air is getting into the engine. so thats probably why you get the mixed answers

 

That sounds good. When you do it you should do a how to with pics of our actual blower. I hope it works as great as they made it sound.

 

Whatever happened to the people that were filling in the silencer holes with jb weld?Did it make the blower any louder?One person on here filled them in,but he also put a smaller pulley on at the same time,so you cant go by that.

 

no prob. I actually have one mostly apart right now. I'll take some pics before I go any further though.

 

IDK, but i can't imagine it would help performance. probably hurt it. I mean, if your closing them, you're robbing it of airflow that it was designed to have flowing through it.. dosen't make alot of sense when you think of it like that does it?

p.s. i don't have any proof to offer.. but I'll bet that would make even more heat.

 

If you port the blower,and fill the silencer holes in,i dont see any negetive affect from it.Its not like the holes are big enough to cause any restriction in the airflow.Im not doing it,i was just wondering.

 

i was talking about filling the holes in only, but still, if you ported/polished it why would you wanna close them? most people make the main hole bigger, so they can merge all three together

 

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