Port supercharger or smaller TB? - Page 3 - Customdakotas.com Forums

djwolf37 · 02-01-2010, 11:06 AM

here maybe this will help:

and mounted to the engine

MOPARVICK · 02-01-2010, 11:24 AM

yall just confused my pea brain. im going to play with my legos now...

daktaspt · 02-01-2010, 12:00 PM

[quote=98Dak408;134647]When porting heads and an intake manifold, you want the intake manifold port a little smaller than the head port to prevent turbulence from the airflow running into a possible protrusion of the head. There is some amount of play/alignment differences as the intake manifold fits onto the head and this prevents a mismatch as the intake is bolted to the head. The same should be true for your blower tube mating with your TB. You can port the blower tube a bit but make sure it is a little smaller than the TB inlet.

Well Said! Too many people try to match them up, and in the real world it usualy doesn't work. You can also flair or chamfer the very end.

**98Dak408** · 02-01-2010, 02:05 PM

Quote:

here maybe this will help:

Got it.

Didn't know that type existed. Pretty cool.

**Rollin Coal** · 02-01-2010, 09:34 PM

Quote:

Originally Posted by 98Dak408

Got it.

Didn't know that type existed. Pretty cool.

thats about how 90% of superchargers are, they bolt directly to the intake manifold.

djwolf37 · 02-01-2010, 09:50 PM

Quote:

Originally Posted by Rollin Coal

thats about how 90% of superchargers are, they bolt directly to the intake manifold.

just since this thread is so confusing, i want to clarify what you said. My supercharger is also the intake manifold. the supercharger bolts straight to the heads, not a intake manifold.

I hope i got this thread right, since i am porting the blower intake tube to match the throttle body.

SH0K0TA · 02-02-2010, 12:51 AM

i'm gonna be the devils advocate.... i'd get a matching TB to the KB... KB made that to flow a certain way... modding it may still be within its operating limits... but if its too big then you'll run into issues.

like the v8TB on the V6... its better to port the V6 TB than use the V8TB because of the airflow. (well IMHO anyway.. the P&P helps bottom end, and the v8 helps top end.)

plus i'm thinkin about it like this... a smaller opening is easier to build pressure in (lower end pulling power) where as its gonna take a lil longer to build up the boost properly with the bigger opening. (more room)

but i guess it depends on the way you wanna setup the truck... pull better in the top end or pull hard off the line...

at least this is the way its goin togeher in my head lol

djwolf37 · 02-02-2010, 01:16 AM

Quote:

Originally Posted by SH0K0TA

i'm gonna be the devils advocate.... i'd get a matching TB to the KB... KB made that to flow a certain way... modding it may still be within its operating limits... but if its too big then you'll run into issues.

like the v8TB on the V6... its better to port the V6 TB than use the V8TB because of the airflow. (well IMHO anyway.. the P&P helps bottom end, and the v8 helps top end.)

plus i'm thinkin about it like this... a smaller opening is easier to build pressure in (lower end pulling power) where as its gonna take a lil longer to build up the boost properly with the bigger opening. (more room)

but i guess it depends on the way you wanna setup the truck... pull better in the top end or pull hard off the line...

at least this is the way its goin togeher in my head lol

finally we can agree on something. you explained in my reason for making this post pretty good. I actually read on a ford site or two that porting it would do nothing but hurt the performance, since like you said they designed it that way for a reason. While that may be true on some of them it might not be for all of them. Some of there intakes they actually make a TB for, and dodge isn't one of them. I am basing it on the demand being so low for dodge products, so they most likely made it for the stock TB and didn't waste time with a bigger TB since it wouldn't see enough for them to make one and they cant design the intake tube to work with the bigger and stock size with out hurting the performance on one. But this brings me back to the question of should i port it or go with a stock ported TB.

SolidStateS15 · 02-02-2010, 06:02 AM

if you don't want to ruin the KB then just get a ported stock TB. one of Dwight's 68mm should work great. just resell the 72mm.

**98Dak408** · 02-02-2010, 12:27 PM

Quote:

thats about how 90% of superchargers are, they bolt directly to the intake manifold.

The ones I've seen on Dodge trucks don't bolt to the heads. The TB sits on the intake and wears an air hat fed from a blower that is mounted to the engine via brackets. I'm not so familiar with the 4.7 stuff. Porting principles are the same though.