im thinking of doin this, the shop i deal with will send it out for me and when it comes back it will be shiny and ported by stegmier(mind the spelling)
my concern is that i have a bunch of mods plus a custom reliable tune with a 2.85 pulley and 42's now if i do this to my blower do i have to worry about idc's all over again cuz i really dont wanna switch over to 60s since this will probably one of my last big mods performance wise, thanks.

 

That is a really good question. I will be checking this thread out waiting for an answer. I'm in the same process. IMO I do not think it will change much of anything.

 

i don't think your gona gain much per say by doing the port/polish. but i think it will help smooth out the HP and TQ curves of the car.
But i may be wrong.

 

I don't see it has being too big of a deal. All you're doing is just opening up the blower, the augers still are spinning at the same rpms. So you'll have less boost because there is more space for the air.

 

hmm, is there anyone that has done this with before and after gains?
apparently stegmier is well known for there porting of blowers, like i said its in the air right now, the car is fast enough, just wondering what the gains would be and if i did go this route would the injectors still work at a safe rate?, jim, my setup includes a smaller pulley(2.85) full exhaust, intake, 42's and a tune.

 

Who better to find out about Eaton Supercharger porting than the biggest customers for it....the mustangs and lightning crowd. And YES i know they are v8's but it is generally the same rule of thumb.

http://www.fordmuscle.com/archives/2...ting/index.php

http://www.mustangforums.com/m_1323567/tm.htm

http://www.musclemustangfastfords.co...ed_eaton_swap/

there is more info out there on this...especially in the lightning forums

 

wrong...used in conjunction with a smaller pulley and injectors (what he already has) is well worth it. He can maintain the 2.85 pulley and 24.5# injectors and get the charger ported.

I dunno what you are talking about...but i would much rather have a good sized pulley not overspinning the charger, but still making better efficiency and power at less boost then a smaller pulley would.

 

What does the size of the supercharger have to do with anything? the general rule of thumb is the same...If you increase the Cfm it can pump by porting it out then you end up with greater flow with lower boost which in turn means better efficiency and less heat.

your logic was to just slap on a smaller pulley and feed it more fuel....so lets add more parasitic drag on the crank for a couple more pounds of boost and higher temps....great job.

 

There was a memeber on redline that did before and after dynos and gains were minimal meaning only a couple HP. Mine is ported weather or not I gained anything I couldnt tell you as I dont use dynos.

 

in all honesty...we will never know how much there is to gain doing it on these cars until someone does it. its basically uncharted territory. but in general for other cars porting the eaton supercharger has yeilded decent gains and better efficiency.

 

What I want to see is the difference in IAT2's. Even if the blower wasn't worth but 2-3whp, if it makes it a little more efficient, that matters to me. These 2.5" pulley's create alot of heat! Maybe it could help prevent blower heatsoak?

 

another good point.
even though my pulley is not that small im sure it wouldnt hurt.

 

rlinbatonrouge is the guy who had the dyno's done, but they weren't an exact comparison, because he had one blower with a 3" pulley, unported, and one with a 2.8" that was ported. Regardless, the differences between the two were approx 12 horses and 7 ft/lbs or so. His car was pretty much stock other than the blower and stage 2 equipment at the time. My blower is also ported, but I too, have not dyno'd. Everything seems to point to this as having minimal gains, but I'd venture to say, the faster you spin the blower, the more it will help. Also keep in mind that the throttle body and intake can be restrictions that can negate any gains from the blower if they are not handled.

 

Why dont you just get the outside polished for looks? Thats what im doing. Im not gonna mess with porting it until i know for a fact everythings gonna turn out good.

 

either way porting your blower WILL show gains...maybe small HP or Torque gains...but it will also become more efficienct for sure, creating less heat which is also a good thing.

I think the only real question here is bang for the buck...

 

Intense does offer the proted housing for less than steigmeir does I think.

 

You mean 42.5 injectors? Anyways, agree with its the bang for buck thing. Gaining 2-3hp and 2-4 torq with a port and polish job on the M62 is only worth it if you have alot of cash to throw around. That cash could be put towards something else more worth it. Then again, if it makes it more efficent and looks great why not? Again though, any proof on any gains or effiency?

 

yea i meant 42.5....sometimes im dyslexic. As far as proof on these cars there really is none because it really hasnt been attempted. But the SVT Cobra and Lightning crowd has posted some pretty impressive gains upwards of 30-50 hp and 12-15 tq depending on the job...yes they have twice the engine so the gains wont be as good...how much the 2.0 would gain is really only to be determined if someone does it.

 

I wish I had a dyno after each mod. I just can't do that cuz that would be very costly. If only I had my own dyno I would so do the testing. Port & polish the supercharger, also port and polish other things like head, and intake manifold. Should help out.

 

Well, a buddy stated that he saw a 10-12 degree DROP in his IAT2's after the ported blower, that alone would be worth the $300.00 in my opinion (atleast at my mod level). Any power/torque gains after that would just be a bonus. I think real results won't show up untill a small pulley like 2.5"-2.6" (or a 2.8" if you have a 8,000rpm redline).

 

Put the money towards a TVS swap next year. That'll bring much higher gains, and then you can have the TVS housing ported later.

 

That would rock! Thing is though, I'm going as fast as I can go with GMP parts. Which means no swapping a super charger. But that would be awesome after my 7 year 75k mile warnity is up.

 

mines out getting ported and exterior polished as we speak. I do plan to dyno after i get it back se we will see. Granted gains will be diff as I have a 2.2 so who knows.

 

Can't wait to see. Keep us up to date man!

 

Someone get Shortbus in here!!! I've been thinking about porting it as well, I'm pretty sure Shortbus ported his.