Porting a Whipple?

[SonicTerminator]

i did a search and i couldn't find anything good, so here i am. i will be putting on my whipple soon, and i was wondering if anyone has ported the inlet elbow on their's? i know it is probably not a good idea to port it too much but just a little clean up and polishing. thanks guys.

 

[FleeMan]

You wont see much of a gain, but it doesnt hurt to do it. I will be doing mine, when I take the blower back off.

 

[viperstang]

hey dont know of anyone doing it but i dont think its a bad idea to port the inlet. they put the crusher intake on a 3.4 and made alot more power.

 

[864svt]

i was thinking of porting my k-bell inlet aswell,

 

[99stanger]

I think its a bad idea to port any twinscrew....

 

[Posi]

If you port where you know it won't hurt then why not try? I cut on mine when I bought it and now I'm trying to make a new modified custom inlet. Here's a few pic's.

Took the radius out where the flange starts. If you have yours in front of you it's easy to see where I cut.

Started on the new larger inlet but it's not to far yet lol. If this works I'll be modifying stock inlets for $.

 

[864svt]

If you port where you know it won't hurt then why not try? I cut on mine when I bought it and now I'm trying to make a new modified custom inlet. Here's a few pic's.

Took the radius out where the flange starts. If you have yours in front of you it's easy to see where I cut.


Started on the new larger inlet but it's not to far yet lol. If this works I'll be modifying stock inlets for $.

^^^looks like its missing something???

 

[Sniperdog]

Yeah.,., whats up with the big hole :shrug:

I think its a bad idea to port any twinscrew....

I concur

 

[FleeMan]

I think its a bad idea to port any twinscrew....

Not the actually twin screw, yes that is a bad idea. We're taking about the elbow/inlet/ whatever the hell you want to call it.

 

[vulture]

^^^looks like its missing something???

lol , yeah , its missing a section that will be welded on with a bigger piece of metal . more airflow to the rotors means more power ! Is this a hard concept to grasp ?:shrug:

 

[Posi]

Yes that hole will be welded back up with some new aluminum plates lol. Here's a pic of it mocked up.

Also just because people say "you can't port a twinscrew" doesn't mean it can't be attempted.

 

[GodStang]

Ok this is what it breaks down to...supplying enough CFMs through your inlet to feed the amount of CFMs your blower is flowing. More CFMs your blower is flowing the more porting the inlet will help. If your blower is flowing 900cfms and your inlet flows 1000cfms porting it will do nothing. Now if you are flowing 1500cfms and your inlet flows 1000cfms then opening it up will see huge gains.

For instance my Setup is flowing 1550cfms and my inlet flows 1004cfms. I am about to switch to the MPH inlet which flows 1800cfms. I should see 60-100rwhp gains and at the point that the blower flows more than the stock inlet can take in on the new blower the dyno graph will break off and see greater numbers from that point on. My setup its at 3000rpms.

 

[GodStang]

Posi the restriction is not there. Its at the bend and at the back of the blower. Your best gains would be from extending the back. Talk to 04TorchRed (Skyler) he had his stock one done.

 

[Posi]

Thanks but I'm to far along to quit now lol. I'll try this first.

 

[Posi]

GodStang did he do this on a 2.3? Or his 3.4?

 

[GodStang]

godstang did he do this on a 2.3? Or his 3.4?

3.4l

 

[864svt]

lol , yeah , its missing a section that will be welded on with a bigger piece of metal . more airflow to the rotors means more power ! Is this a hard concept to grasp ?:shrug:

guess u didnt catch my sarcasm..lol.was a cheap attempt at humor saying he was missing a section..

 

[Posi]

I think that the 2.3's are bottle necked here. Or at least that's what I'm hoping for. What I am doing should increase the capacity for air by about 17% in the area I'm working on. So hopefully that will work. If it doesn't then the next step is put a spacer inbetween the inlet and the back of the rotor case.

I do not want to make a custom inlet so the price will stay down! Although I've been thinking about it and I think I got a way to keep the price down but I need to quote the project. If I do that and it works then hello new Revolution in plenums!!!!!!!!!!!!!!!!!!

 

[GodStang]

Remember I am only trying to help.

Its not about capacity but about supplying enough CFMs to the blower. The part that bothers the flow the most is the bend and the back. You want more CFMs to make more power then those are the main places to look.

 

[Posi]

Remember I am only trying to help.

Its not about capacity but about supplying enough CFMs to the blower. The part that bothers the flow the most is the bend and the back. You want more CFMs to make more power then those are the main places to look.

I know you're giving me your opinion and you know I'll listen to what you have to say. That bend is going to be expensive to fix and like I said what I'm trying will hopefully help get the air through there. I've already worked on that inside radius:-D and when it's welded I can work on it some more. There was quite a bit of aluminum removed from the inside of that radius. So I am trying to do what you're saying while enlarging the opening for the Thorottle Body.