I'm getting tuned on 93 octane. After that's dialed in I will tune for e85. You will be fine for e85 with 1000cc injectors and a 340 pump.

Sent from my SM-N920V using Tapatalk

The 450 is not necessary. I'm going to be doing my initial tune on 93 first and then move onto E85 (I'll be going flex fuel fyi) in maybe a month or so. From what Charles told me, the upgraded S1 + Walbro 450 will be a HUGE upgrade from where I 'would' be at right now. I'm pretty much going overboard, since I'm not even going to be running on the SI unit.

Well atleast if you decide to go with a the SI, your fuel is already there.

Better safe than sorry.

So is it better to go with the 340 aeromotive stealth pump or the 450 walbro pump for the e85/Stillen a2a?:ugh2::ugh2:

The 450 will be "better", but isn't necessary. Keep in mind, you need a fuel return kit with an external filter in order to run the 450. I know Topgunz had plans to go with the 450 eventually, but he is running the standard S1 kit right now.

I hadn't been accepting payment untill I can ship kits the same day. However, with my vacation I took a few payments that will ship when I get back Monday.

Does anyone know where to find idler pulleys by dementions? Autoparts store are useless.

Sent from my SM-N920V using Tapatalk

I just measured the supercharger pulley on the serpentine side and it is 2.9" . Is this the normal pulley? I thought it was 3.1 or 3.2". Isn't this the pulley that gets changed to the 2.75" one for the 9 psi?

Sent from my SM-N920V using Tapatalk

It should be 3.2 or 3.1, I tried a 2.75 but that when my supercharger blew up. Don't use that with the 9lb pulley, that pulley alone is probably over spinning it or real close.


Sent from my iPhone using Tapatalk

I haven't changed any pulleys. They are all standard. Isn't the one on the serpentine side the one to replace for the 9lb upgrade?

Sent from my SM-N920V using Tapatalk

Did you buy it used?


Sent from my iPhone using Tapatalk

Yes I did. I measure them all earlier. The ones on the Jack's haft and supercharger (8 rib ones) are around 3.1". The one on the serpentine side is around 2.9". I'm only seeing 7 psi boost.

Sent from my SM-N920V using Tapatalk

Both on the jack shaft are the same size stock, I'm not positive on the size but I know it's in the big thread about a2a.

So do u have a schedule? Do u take orders every 2 weeks, once a month? Trying to figure out timing so once funds are available I can place order.

Well, looks like another set back. Looks like I'm not having the best of luck. The CJM S1 upgrade kit that was sent to me was missing a line, so my shop has to make one, since it would take too long to have Charles send one out.

I asked Charles a last minute question about possibly hardwiring the Walbro 450 and he told me that we should probably upgrade the wiring, since it runs very hot on stock and probably wouldn't last. Parts should be here on Tuesday, so I'm hoping this will be it finally.

jack and charger should be 3.20" on both sides. stock.

Where did you get the pulley for the serpentine side?

Sent from my SM-N920V using Tapatalk

My Turbo Supra buddy loaned me a book to read this weekend "Engine Management Advanced Tuning" Engine Management: Advanced Tuning: Greg Banish: 9781932494426: Amazon.com: Books

Great source of info about turbo and supercharging. No less than two places in there it states that air temperature must be measured post cooler as close to the intake manifold as possible. Way to go TopgunZ!

If you really want to understand the how and whys of boost, this is a must read! It is also well written and easy to understand the concepts presented.

My Serp pulley is a 2.90" also. I bought my kit used too. I have that coupled with the 3.0 SC pulley and 3.2" JS pulley. It makes 12psi with the SI trim.

I have basically just been going off who PM's me and says they want one and are ready with payment. Then I put them on the "for sure" list and get it to them as quickly as I can.

Right now I have 2 kits available that are not spoken for. If they both go before you are ready to grab one then it will be another 3 weeks before the next batch will be ready. The shop I am using to build the Y-pipes wants to do them in batches of 5 and they usually have about a 2 week lead time before they can start them after I tell them I would like them to be made. It then takes around a week to get them done, then they will ship.

Not read that one but I highly recommend Corky Bell's Maximum Boost too. It's for turbos but I think he made a SCer book too.

One of the other books loaned to me is "TURBO Real World High-Performance Turbocharger Systems", by Jay K. Miller. It is very technical and includes lots of design aspects of building your own system. I mostly read the parts covering the compressor side of turbos which basically what a SC system is, just at lower rpm. Turbo compressors turn over 100K while sc turns well under that and needs to be sized accordingly. This book also has some great info on aftercoolers (the correct term that we should be using).

I'll have to check that one out.

I didn't, I only changed the supercharger pulley, I got that from Vortech.

What size did you use and what was the boost?

I broke the first supercharger with a 2.75 then changed to a 3.0 for the second one, it was around 10psi but not 100 percent positive. I have long tube headers on my car so it's going to be less than others will see with cats. I don't know that over spinning the supercharger caused the first one to go but I wasn't chancing it. At the track my car sees red line hundreds of times in a weekend so it takes a lot more beating than most street cars.

Thanks JWillis72. Mine, being a fair weather driver, will not see max boost too often.....but it will see it!

My Vortec pulleys came in today. I have a 3.4 and a 2.95 to play with. Between the stock 3.2 I might be able to find the 9-10 range.

go to the vortech calculator and figure out the numbers, I think the 2.95 with all the others stock should be about the max.

http://uploads.tapatalk-cdn.com/2016...a840f4c3ce.jpg

http://uploads.tapatalk-cdn.com/2016...d033a7ace1.jpg

Tial came in today! They gave me the wrong clamp though. Now for some more waiting.

Sent from my SM-N920V using Tapatalk

Ive ordered a 1.96" idler pulley and I ordered 14 different gates gator belts.

Im going to tackle this idler pulley on the serp side tonight, Ill find which belt/ pulley that works and ill return the other belts.

Where you get a 1.9" idler pulley? Lol I could only find a 2.2".

Sent from my SM-N920V using Tapatalk

Thanks! Will check it out.

I have seen several people not getting the boost they were expecting with the stock kit. Some are only getting just over 7 psi. I'm aiming for 9 psi.

Anyway, that is for the tuner to work out based on what we see at WOT. Having the extra pulleys on hand will allow us to experiment.

Napa has all kinds of pulleys, I just went down there, said show me all your pulleys, went through them all until I found the one I liked:)

Do you have a part number? I'm at Napa right now and they are telling me they have nothing that small.

Sent from my SM-N920V using Tapatalk

its a dayco pulley, ill get you a PARt # when I get home

You know what guys, I just realized..

The stock idler pulley on the supercharger side, the one that tensions up your supercharger belt, this pulley would work perfect. I have one laying around because I changed mine to a 3"

Never thought of that. Haha

Sent from my SM-N920V using Tapatalk

Great idea, I need to find mine.




Sent from my iPhone using Tapatalk

Daaaaaam....that's one big bad boy...is that the same model that StillenZ34 has?

Yes I believe so. This is the model that was recommended by Topgunz. The Tial QRJ with the 1.5 psi spring and 50mm flange.

Sent from my SM-N920V using Tapatalk