guys I have an 86 with a freshly built s4 motor. Something is wrong with the internals and I bought the car for 650 bucks. The builder is a guy who is cool as all hell. Phil Evans in Roanoake Rapids, NC.

Anyhow the guy that owned the car before had the thing ghetto fabulous and was only willing to spend $700. He overheated the motor and needed a new rotor, housing and both irons and midplate. He got the full rebuild with hardseals and all for that $700 bucks.

Because Phil was basically losing his *** off on the deal and being nice he reused the same bearings. Well the motor vibes and he is going to tear the motor down for me and port it all for free. I just need to buy the new bearing and soft seals.

He wants to half bridge the NA for me along with my s5 rotors. I am also thinking of throwing my spare s5 intake manifold on it along with the AFM and all. This way I can get a cone intake without having to buy an adapter.

My questions are that this guys swears I can use the stock computer and AFM for this as it has plenty of fuel to make up for what this thing will be making, and what kind of power will I be putting out with a half brigde s5 na?

5/6 ports are gone as well. Is it difficult to switch to an s5 AFM from an s4? And can I survive without a standalone and a half bridge?

 

It would run on the stock ECU, but not to it's full potential. You really need a standalone and a better intake manifold to take advantage of the bridge port.

 

I think Aaron show up to yell at you for this question when he sees it . Bridgeports on the stock ECU don't work well at all. For one, the power band shifts way up on a bridgeport. And from what I've seen, when it comes to bridgeports, aux. bridging or half bridges are somewhat of a waste. It's full bridge or go home.

 

maybe I should just do a big street port.

 

^^^ Better idea unless you get some form of fuel control.

 

Say no to 6 port bridging!!! Especially with stock intake manifolds. I'm actually of the opinion that if most of your driving is on the street, you should not ever consider anything other than a streetport. Some will disagree I'm sure but they make sacrifices that they aren't willing to admit to. Streetports get little respect for some reason but on 6 port motors they absolutely blow away a bridgeported 6 port setup and can typically not do much more than stock could amke if pushed to their potential. 6 port irons just don't have the flow characteristics needed for making good power on a bridge.

 

ok big streetport it is then.

 

oh yeah what about the s5 intake and maf idea? Will it be worth the work for the manifold and how hard is it to plug in the s5 maf.