You're going to have the same problem as the original poster. Getting around the 10.4:1 compression ratio. Unless you're willing to drop the compression by either swapping heads, or changing pistons, I'd suggest a pass.Azarello said:I'm thinking about it. I have a non PI 96 gt, will it work on mine?
Gearbanger 101 said:You're going to have the same problem as the original poster. Getting around the 10.4:1 compression ratio. Unless you're willing to drop the compression by either swapping heads, or changing pistons, I'd suggest a pass.
If you haven't done a PI swap yet then any blower will work as long as you keep it under 8lbs of boost and get a good tune with it. Forged Pistons/Rods are always recommended though!Azarello said:Is there any supercharger I can get without swapping heads or changing pistons?
You’re going to need something with an intercooler/aftercooler. It's not impossible to supercharge a high compression engine, just not with the SVO unit that doesn't come with or have the ability to add an aftercooler. The Mach 1 guys are getting blown and they’re in and around 10.5:1 compression, but keeping things under 6-7psi for the most part. You might want to check out one of ATI's kits. They come standard with an aftercooler. Or you could check out one of the other Centrifugals (Vortech, Paxton) and run them with water methanol injection.Azarello said:Is there any supercharger I can get without swapping heads or changing pistons?
Gearbanger 101 said:You're going to have the same problem as the original poster. Getting around the 10.4:1 compression ratio. Unless you're willing to drop the compression by either swapping heads, or changing pistons, I'd suggest a pass.
I got a little confused by the replies so I am just going to respond to the orginal post.TheSalad said:Hey,
http://cgi.ebay.com/ebaymotors/Ford-Mustang-96-98-SVO-Roots-Supercharger_W0QQcmdZViewItemQQcategoryZ33741QQitemZ8031608220QQrdZ1
I was browsing on ebay, and saw this thing. Is it any good?
Also, my 4.6 SOHC was headswapped, so I have a higher compression, can I run this Supercharger? Anyone that knows, let me know..always looking for a few extra ponies..
Thanks!
Sorry, yeah I misread his post. This kit will work well with a Non-PI Mustang. I don't know why I was under the impression that he was head swapped? Been hanging around here too long, I guess.invertmast said:He has a NON pi 96 GT.. so YES this blower will work for him. I've got one on my NON Pi headed 96GTS and its a great little blower.. makes good power (and i've only got the 5lb pulley on) and sounds pretty damn good.
Now.. does anyone know where i can find a 10lb pulley for mine? I've asked rheinhardt Racing and they want $150 for a pulley, there has to be someone cheaper than that.
Azarello said:Is there any supercharger I can get without swapping heads or changing pistons?
gearbanger 101 said:catastrophic engine failure can make for some great photos, it can be quite expensive...
I bet the guys that you've seen running 9psi without an aftercooler were running Centrifugal blowers though, right? Centrifugals don't make near the heat that an Eaton or a Twin Screw does. Because of this, they're able to push the envelope a little further without worry of spoiling the air charge.invertmast said:I've seen alot of guys running 9psi pulleys w/o an intercooler, so i dont see why i cant run atleast 9psi...
But i've got to put a new motor in my 96GTS (it started knocking this morning)..
Sooo.. Should i slap in a 99+ motor and put on the little FRPP blower, or just get another 96-98 motor?
Gearbanger 101 said:I bet the guys that you've seen running 9psi without an aftercooler were running Centrifugal blowers though, right? Centrifugals don't make near the heat that an Eaton or a Twin Screw does. Because of this, they're able to push the envelope a little further without worry of spoiling the air charge.
If you're going to put a new engine in your car, go with the complete PI engine. The runners of the SVO blower can be gasket matched to the PI heads with ease and you're going to make much, much more power with the later engine and that blower, than you would another NPI engine. It might even drop a pound or two of boost because of the additional flow potential and allow you to run a little smaller pulley for even more power still.
9psi is really pushing things with that blower. Without some top notch fuel and some cool weather, I wouldn't want to be running those boost levels for very long. Keep in mind, that the '03-'04 SVT Cobra uses that very same blower (with a different manifold design obviously) and they're factory driven at around 8psi and come with full heavy duty aftercooler. Now, since the FRPP manifold is considerably a lesser flowing unit than the one on the Cobra, boost levels are going to be higher since there is an increase in backpressure. So the SVO/FRPP unit may actually be showing higher boost levels, but moving less air. But either way.....I wouldn't want to be caught running 9psi with one on a hot day in stop and go traffic.invertmast said:Nope.. the guys running 9psi were using this same SVO/FRPP blower... When you say gasket match, do you mean having the intake runners ported to match the PI head ports? Cause if soo, i don't have the $$$ for that..
And i just bought a set of compe XE268H cams.. those will still fit in the PI heads right?
Gearbanger 101 said:9psi is really pushing things with that blower. Without some top notch fuel and some cool weather, I wouldn't want to be running those boost levels for very long. Keep in mind, that the '03-'04 SVT Cobra uses that very same blower (with a different manifold design obviously) and they're factory driven at around 8psi and come with full heavy duty aftercooler. Now, since the FRPP manifold is considerably a lesser flowing unit than the one on the Cobra, boost levels are going to be higher since there is an increase in backpressure. So the SVO/FRPP unit may actually be showing higher boost levels, but moving less air. But either way.....I wouldn't want to be caught running 9psi with one on a hot day in stop and go traffic.
As far as gasket matching....yes, porting the intake runners to match the PI head is what I'm referring to. It's really very easy and probably something you're able to do yourself if you've ever used a die-grinder. Even if you're not able to it yourself, if you can afford to replace the engine, I'm sure you can afford another couple of hundred bucks to have someone do this for you. Either way, it’s not completely mandatory….it’s just going to net you better results. Possibly in the 20rwhp range.
As far as the cams go.....I don't think the NPI cams will work with the PI heads. If memory serves, there was something different between the two, but you're probably best to speak to someone at CompCams about that.
Check Ebay or a local salvage yard. They're usually not too hard to find.invertmast said:Any idea where's the best place to pickup a used motor for fairly cheap (around $1k?). As i'll be lucky if i can come up w/ the $$$ to buy a motor, let alone another dremel tool to gasket match the blower.
CanadianGT said:wondering if this supercharger would perform better with pi or npi cams?
CanadianGT said:wondering if this supercharger would perform better with pi or npi cams?
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