Hey guys. I finally rounded up a digital camera and took some shots of the ysi setup on my car. It is going to be run with no intercooler but with alky injection. My goal is to run 110 mph in the 1/8 at full weight and with road race suspension and a stock stall converter. With the stock converter, the car really has to muscle it's way through the 1/8. Anyhow, I just need to hook up the bypass valve and then essentially this thing is ready to go. Unfortunately, prior to me pullying the blower, I need to get the car smogged and fix an oil leak off one of the lines going to my oil cooler.

Here's some pictures of the setup. The discharge tube had to be fabricated from scratch. All in all, I'm pretty pleased with how it turned out so far.

 

 

Ah, so you don't need a reverse rotation supercharger on an LT1/4.

 

correct. Using the old school carroll brackets, you can use a standard rotation blower. Getting the ysi to fit takes a little bit of work though. There's a little more to it than just bolting up a ysi. You have to modify the volute to go differently to avoid valve cover clearance issues.

 

looks like your getting there,110 in the 1/8 is pretty ambitous, good luck. Did you ever sell your old system?

 

still have it hear. I was kind of holding off on readvertising until I pull off my 38's off this car. I'll probably add them to the package.

Yeah, 110 is ambitious, but I was at 97 without the car even running right with the old system. My old power curve would drop off after 4600 rpm. Hopefully with a good tune, this setup will get me there.

 

Looks good.

Did you have to cut into the hood?
Is that the snow alky kit I see?

 

yup, I had to cut the hood unfortunately. There was no way to stuff that ysi in there without it. I actually had to cut the hood more than greg's kit calls to cut with the s or t trim head unit. The volute is much bigger on this unit.

That is a snow alky controller unit you're seeing. I made the rest of the kit to my own specs.

 

Nice job on moving to the YSI. If it is anything like the R series ProCharger units (2300 CFM), then you would have had to cut a pretty big chunk out of the hood channel.

From the pics, I would be concerned about the inlet filter, as these centrifugal superchargers are very sensitive to resistance on the inlet side of the S/C. That filter is way small compared to the units that I have set-up.

Where are you injecting the xxOH? You will want it to be fairly close to the TB, to eliminate any issues with "puddling" when jumping out of the throttle quickly. But you also want it far enough from the cylinders to have enough resonance time. I run my large jet ~14" in front of the TB, with the smaller jet located ~8" from the TB.

Looking good, can't wait to hear how much boost you get out of that package. What boost level were you seeing prior? How much are you expecting with the YSI?

Aaron

 

The ysi is pretty similar in performance to the f1r except just a little less airflow. You're right; I definately had to take out a chunk of the hood.

I am really curious about the puny air filter too. A bunch of people said it wouldn't make much of a difference, but I can't imagine it not making a big difference. I plan on dyno and track testing it both ways.

I'm still toying with the ideas for the alky injection. I love your idea of spacing out your nozzles but I'm a little concerned about the location of the bypass as well. I don't want to get too much spray when I get off the gas. I may use a smaller size nozzle to "pre-spray" the intake charge a bit and then use a bigger one closer to the throttle body so that not as much sprays out the bypass.

Performance estimates.... who knows what this thing will make. I think I could have hit 550-575 if I could have kit the spark lit with my old setup. It ended up doing 504. It'll be interesting to see where this thing ends up; shopview put out 704 to the wheels with this blower before he sold it to me.

 

what pullies are you running? Did you ever change the crank pulley?
IS that a 7 rib or 6 rib? Looks like a 2.95" pulley on the blower?

BTW: I just ordered a YSI today for mine. Should be here in about 10 days. Can't wait.

 

Good to see it coming around Russ.... Sheesh, I go for a T trim y'all go for a YSI ... just isnt fair

I'm anxious to see her rollin'



MO

 

Did you sell the forward rotation t trim? Looking good by the way.

 

Mo' where's your ysi? All the cool so cal guys are doing it... lol.

Zelement- it's 8 rib now. i got greg's balancer. it's got a 2.75 on there but I'll probably try to run a 3" for a little while until i figure out where the boost is.

Bam, I do have the t trim but it's a part of a mustang kit that I'm trying to sell.

 

Looks very nice, So how come you want to do this with the stock converter? I would have thought you'd drop a few 0.1's with a better one on the 60'.

But if you are in it for the mph good luck!

 

Here's some more pics...

 

 

When I first ditched the IC, I had the same concerns with the xxOH spraying out the BOV when you are off the gas. Fortunately, those people who had done xxOH much longer than I, stepped in and gave advice. Bottom line, the xxOH quits spraying far before 0 psi and as such will not be present in the intake tract following closing of the throttle blades. I have checked to see if I am getting any discharge following hard runs with abrupt throttle changes, and I find no evidence of xxOH getting out the BOV.

Mount the sprays where you may, you will be happy with the results. Did you buy the twin nozzle SnowPerfformance kit? What psi were you running before, and what psi are you expecting now? How about some cam specs and intake port sizes, and we may be able to get you some rough idea as to the new boost level based on MIP and SCFM.

Aaron

 

Hey Aaron,

I used to get a little spray out of my old setup's bypass valve. It wasn't too bad or anything but I did have the nozzles about 2" toward the throttle body from the blowoff. I don't think it's a big deal so I'll probably go with your style of setup. The only thing that is snow on my car is the controller. For $130 or so, you can't beat it. I used my own pump and hoses. I got my nozzles off mcmaster-carr.

I was running right around 10-11 psi at my car's peak. 9-10 psi was pretty normal. The cam specs are unknown, but I'm 90% sure it's a hotcam in there. The heads are cnc'd lt4's. I'm not sure what they flow or the port sizes, but I'd guess around 275 or so on the intake. I bought the car already built and then have been tweaking on it for the last 2 1/2 years.

I'll probably try to pulley this thing for about 14lbs of boost. I have the 2.75 and the 3". The 2.75 made 17 lbs on a car with an air to air and similar long block; I bet it'd be close to 20 without the air to air on there.

I don't want to go too crazy because I know that the trans is already on borrowed time. That's another reason I haven't changed the stall converter. I'd prefer to keep it together rather than erk out an extra tenth or two. It sixty foots in the high 1.60's on 17" drag radials. I figure with this power and a converter mid 1.50's would be pretty achievable if not high 1.40's if the car was setup for the drags. Also, I haven't spent the cash on a converter because I'd rather upgrade the trans and converter at once with a heavier duty trans (4l80) or a 6 speed auto. This thing should make about 650 horse/ 650 torque.

 

I used get meth blown out of the BOV as well but that just takes a little tuning with the Snow controller to get the pump shut off before 4 psi or so.

Where are you placing your IAT sensor? I have found the best way is to have the IAT sensor about 3-4" downstream from where your Meth nozzles are. Is that where you have yours placed?
That's pretty decent wrap around the blower pulley. You didn't change the crank pulley did you?