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I'm debating on just keeping my ported v+ blower or going to a larger supercharger. I'm not sure if the gain is worth it or not. My car runs pretty good with just 12.5 psi of boost on the ported blower. I've thought about getting more boost out of it. I want to stick with my stock tb but I see that getting much over 575 whp isn't easy with one but it's also power under the curve that matters. I had a huge headache with a dragon tb idling issue and I don't want to go through that again.
The TVS is the way to go if you are upgrading the blower. It's still a roots style compressor and does not compress the air when you are out of boost. Twin screws compressors are always compressing the air (and therefore heating it up) even when you are just cruising. The compressed air gets bypassed back to the top of the blower of course, and some of the air is "blown" between the sides of the case and the rotors like a roots style- but the majority of the air is always traveling through the screws and being heated.
The Eaton can only move so much air, and that's going to ultimately limit how much power you can make.
The TB issue is a whole separate animal. I have a stock TB on my 2.3L Whipple, I didn't want to spend the extra $700 at the time for the single blade, and I didn't want drivability issues. It seems like plenty of guys are running the big TBs nowadays without issue. I've heard the throttle is crazy touchy with the big monoblades though. I'd go with a bigger twin TB if that's an option for the blower you are considering.
Id say a TVS with the GT500 TB. They are making killer power with that setup.
VMP 2.3 TVS. Check it out. WIsh I had known about their stuff before I bought the Roush. They look similar on the outside, but are reworked different on the inside.
I just don't want to pick one up and spend decent amount to not go much faster. I want to keep it on 93 pump gas and the ported blower I have has a little bit more wiggle room. I don't know my IATs but I do know I never had a heat issue with it. Last dyno only dropped 2hp between back to back pulls.
Well, you will spend a decent amount and not go much faster if you keep it running 93 octane. It will be faster, and the blower will run cooler for the same airflow- but just marginally. You need to go to race gas or E85 and run 20+ psi to really make the bigger blowers shine. I'm still glad I have my 2.3L Whipple though, even at 16 psi. I can always turn it up, an M112 Eaton is basically done at 16 psi, flat lining around 5200 RPMs probably.
What pulley are you running on your whipple?
VMP TVS with E85 and a return set up. That's what I plan on doing down the road. The removable inlet is worth it as well.
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I enjoy e85 but cold starts can be iffy if not tuned perfectly. There are quite a few stations by me and I now have ran it in my Volvo and Srt4 with good results. As for now I just want a 93 pump gas tune. The only thing I don't like is I'll have to put a larger crank pulley to increase the boost on the Eaton. No one wants to part with their caged 4lb lower cheaply. It's almost better to sell my ported blower and get a second hand 2.3 whipple than paying 1000 for a 4lb caged lower.
It depends on what your long term goal is. My 2.3 whipple served me well and made damn good power on e85. It was a good solution given my budget at the time. The Tvs will give you more room to grow in the future if you decide to turn it up. It is a more efficient blower and will make more power, more efficiently than a 2.3 whipple.
I'm leaning towards a TVS but a whipple at right price would be fine also. I want to gradually add more power to keep it interesting. 600 whp would be nice someday since it seems the norm now for new boosted muscle cars.
You missed a guy just did a batch run of those on SVTP.Quote:
Originally Posted by PKFIRE
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It's been so long since i messed with it, I'm not 100% sure on the upper- but I think it's a 3.5 upper with a 4 lb lower. Mine is the old Gen 1 Lysolm Ford Racing Whipple, so it makes a bit less boost than the current 2.3L blowers. I have I think the only 10 rib belt caged 4lb lower in existence for these cars. It wasn't cheap.Quote:
Originally Posted by PKFIRE
He's only selling the pulley, you'll have to tear down your lower and install the pulley he's selling. Still not a bad deal, and you get to re-build the bushings in the tribar, and the main bearing as well.Quote:
Originally Posted by Blkcobra01
Damn I mis-read the thread. I thought he was buying up caged lowers and having a machine shop do the work. Then selling.Quote:
Originally Posted by IWRBB
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There is one guy on SVTperformance that has one for sale completed for 1100.
This is my plan with E85.Quote:
Originally Posted by draggin50
Its hard to beat that set up. I think that's what Ricky is running and it runs good.Quote:
Originally Posted by rtvickers
Sweet Tommy! Let us know when you decide to do that. This maybe will help sway my decision to get rid of my port.
It might be a little while but you'll be the first to know. The entire setup will be available.Quote:
Originally Posted by PKFIRE