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Which heads for Supercharged 363? 

 

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 Post subject: Re: Which heads for Supercharged 363?
Posted: Sun Feb 26, 2012 1:33 pm 
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Yeah i am currently modifying the discharge manifold to run a FMIC. I am not putting up with 192deg/f intake temps on this build!!

 

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 Post subject: Re: Which heads for Supercharged 363?
Posted: Sun Feb 26, 2012 2:00 pm 
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Yeah that was another option, I guess you've seen that orange stang with the 363 and FMIC KB?

 

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 Post subject: Re: Which heads for Supercharged 363?
Posted: Sun Feb 26, 2012 7:03 pm 
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Yeah mate, sure have, the red one.
As you would have seen, he only has TFS 170cc heads. But is now stepping up to the 205's. I'll be interested to see the results.

 

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 Post subject: Re: Which heads for Supercharged 363?
Posted: Sun Feb 26, 2012 7:24 pm 
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Red, yeh :P I was surprised about the heads.. The 205's will be a big step up.

Have you seen the B&H kit?

 

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 Post subject: Re: Which heads for Supercharged 363?
Posted: Sun Feb 26, 2012 8:08 pm 
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Yeah their setup looks great!!

The 1.9L would be too small, but the 5.0L kit with the 2.3L head unit would be perfect. Too expensive for me to ditch the KB and move to that setup though.

 

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 Post subject: Re: Which heads for Supercharged 363?
Posted: Sun Mar 04, 2012 11:56 am 
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I think regardless of the 180+cc head you choose the Explorer intake & KB will ultimately be the deciding factor on how much power you'll make. Certainly if you didn't have any kit and the $$$ aren't too tight then the b&h setup would be far superior.

 

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 Post subject: Re: Which heads for Supercharged 363?
Posted: Sun Mar 04, 2012 12:05 pm 
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Am I really going to see a big difference between the 2.1L KB and the 2.3L Eaton??

We're looking at a price difference of $4000+ on the kits.. what bang for buck am I going to get ?

 

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 Post subject: Re: Which heads for Supercharged 363?
Posted: Sun Mar 04, 2012 12:43 pm 
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From what i can see, by stating the obvious the advantages of the B&H Kit over the KB would be...

- Bigger Capacity Blower
- Kit comes intercooled (no need for custom fabrication)
- Higher Flowing lower manifold
- Neater Setup

Only dis-advantages i can see are...

- The need to run coil packs (done with an AU ECU)
- The outright cost (which really isnt too bad IMO)

 

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 Post subject: Re: Which heads for Supercharged 363?
Posted: Sun Mar 04, 2012 2:06 pm 
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From what I've seen the Eaton is also a more efficient design of supercharger over the Kenne Bell. Remember the KB kit was originally intended for stock iron headed 5.0L.

 

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 Post subject: Re: Which heads for Supercharged 363?
Posted: Sun Mar 04, 2012 2:14 pm 
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So are we saying there's potential for another 50, 100 streetable HP?

Is it really as simple as saying that 1 psi noost = 15HP? If so, 15PSI on both blowers would net the same results, right? Yes, this is likely flawed thinking - so correct me please :P

I realise the efficiency of the supercharger comes into play - is this simply in relation to the heat added to the charge - or is it also a product of flow and drag?

 

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 Post subject: Re: Which heads for Supercharged 363?
Posted: Sun Mar 04, 2012 3:17 pm 
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Waggin wrote:
So are we saying there's potential for another 50, 100 streetable HP?

Is it really as simple as saying that 1 psi noost = 15HP? If so, 15PSI on both blowers would net the same results, right? Yes, this is likely flawed thinking - so correct me please :P

I realise the efficiency of the supercharger comes into play - is this simply in relation to the heat added to the charge - or is it also a product of flow and drag?


Yep, that's flawed thinking. A classic example is a test of a cheap chinese turbo vs a proper one. Same boost, 75hp difference at the peak not to mention elsewhere in the curve.
Efficiency means everything when it comes to compressing air.
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 Post subject: Re: Which heads for Supercharged 363?
Posted: Sun Mar 04, 2012 6:34 pm 
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But from everything I've read, the twin screw KB is more efficient than a roots blower (of the same capacity). Less drag, much lower charge temperature.

So while the TVS is way more efficient than the earlier Eaton GenV kit - is it really superior to the KB autorotor?

 

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 Post subject: Re: Which heads for Supercharged 363?
Posted: Sun Mar 04, 2012 6:46 pm 
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Intake manifold boost is an indirect measure of induction restriction. Low flow intake/heads = more manifold pressure & less flowing into the combustion chamber. So with the same supercharger setup, a lower intake manifold boost reading will almost always mean more power. Explaining the other way around, with the same supercharger setup, a high flow intake & head will show a lower gauge pressure than a low flow intake & head.

When heat is factored in, the situation gets even less stright forward. More intake charge heating = more pressure for the same mass transfer. For the same intake tract, the situation can be can be compared with the formula (P1/T1)=(P2/T2). Temp is is Kelvin (centigrade + 273)

 

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 Post subject: Re: Which heads for Supercharged 363?
Posted: Mon Mar 05, 2012 4:18 pm 
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Waggin wrote:
So while the TVS is way more efficient than the earlier Eaton GenV kit - is it really superior to the KB autorotor?


Yep.
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