There was a posting of the XKR forum about snake bite kits, they said eaton claims they're just silencer ports and won't increase power...I saw a few posts at the cobra/lightning forums that claim there was no gain...But I'm guessing the average cobra/lightning owner who's willing to go through the times/costs of doing this mod for more noise isn't doing it on a stock car...So if they are getting 1lb gain, they may be putting 500lbs to the wheels...

Here's two video I could find which have had their silencer ports filled...

GTP SIC on the Dyno - YouTube
Lightning Before and After... - YouTube

 

I've got to pull the supercharger to replace the coolant hose. I might try this, but what epoxies are people using?

 

Industro Weld or Perm-O-Seal...They all recommend using epoxy (but NOT jb weld) vs welding...Many have had their epoxy hold for a decade now...They say if you prep it right it will last forever...But do your own research...

A lot of folks in the svt forums state there is no power gain...

 

if the epoxy brakes apart you could possibly bend your valves, cyl walls, rings, pistons.

 

Wouldn't it get stopped by the aftercoolers?

 

Why not ditch covering the ports and just port the blower? Guys are getting 20+ hp with just a port alone.

 

Because I am cheap Well, I can't see spending $600+ for 20hp

 

With the first video posted, does anyone see what looks like exhaust flame under the induction tube when it comes off throttle?

The second video, I only notice the sound is much greater after the port seal. No stretched light like when the Millennium Falcon jumps to lightspeed (the only reason I'd mod the Eaton)

It sounds like it's in the cab with him - no use to me seeing as it's a Jag saloon. Having to take the inlaws for a meal with that row wouldn't be good form. ('Is our daughter seeing a headcase' would shoot through my potential father-in-law's head)

Glue v Welding. Good luck.

 

I dont think it will stop small pieces. A chunk could end up going down the bypass valve and through the rotor pack.

 

Not to mention shipping of the blower to the porting place and cost new gaskets...You could get nitr, I mean a killer chiller setup for that price...

I-Epoxy has an extremely high tensile strength and is used in many construction projects including bridges, tunnels and skyscrapers...Unlike "glue"...

 

From wandering around the internet, researching the silencer port, this little gem came up:

The Rolls-Royce Merlin aircraft engine was one example of a supercharged engine that used "extra" fuel introduced ahead of the supercharger when on boost to both enrich and cool the charge. Good for a cooling effect of 25*C.

hmmm....

 

maybe the Fuel portion of a nos wet system connected to the fuel rail with a jet installed in to the elbow with the fuel line routed through a Moroso 65125 Moroso Insulated Cool Cans cool can

 

Using meth is even more effective then fuel. In the days of the Merlin things were a bit less metered not to mention it had no intercooler and a super charger with more displacement then our entire motor.

On a side note the Merlin is cool and HUGE! They rebuild them at Roush Racings Detroit facility at first for Jack Roush planes and now for others as well. He has one sitting in the lobby of the the FAA regulated building they build them in. Quite the sight!

We are now working on getting this off topic though

 

Just for reference

Stock supercharger, Mafioso intake tube, K&N, no hood insulation and no engine cover
Quick run 50-90 - YouTube

2nd 50-90 run - YouTube

 

The STR is out on rental, I will make a video when I get it back in a few days. This mite not be a very good comparison due to 2 different camera's.

 

Ya, I used a 3gs iphone. I need to get one with my contour

 

I did this many years ago on my Lightning. I can tell you from my experience that it is only for making the blower louder. I'm sure someone will claim more boost, or quicker boost, but it simply just is not true. The silencer ports are simply like a chamber on a open muffler. No restriction at all. BTW, my Lightning sounds like a jet fighter under WOT. I have a burn out vid (just burning off the old tires...) on my YouTube page you can check out. Just shut your eyes and pretend it's your STR...

SVT Lightning Burn Out - YouTube

Stock my Lightning blower wine sounded much like a STR, so sounds comparison IS valid hEAR.

Edit: I've got some vids from in the cab too if you search my vids.

 

I think I was looking at your vids the other night.

 

Did the welder not know about the tight tolerances between case and rotor? Welding in that area sure doesn't sound like a good idea, unless they're little tiny TIG spot welds to tack on cover plates.

 

Still awaiting the video