DOHC Supercharger development

[StealthFan]

Anybody interested in a supercharger for their DOHC engine?

http://www.3si.org/forum/showthread.php?t=190968

[DJ GTSR]

:flaming: ME!

[StealthFan]

So, I'm all ready to plunk down a deposit on this bad boy setup, then I go into work today and find out that half the company is being downsized, myself included!:mad:
So much for my supercharger dreams...:(

[StealthFan]

Negotiated my job back, so I'm soooo on the list to get a S/C !!:thumbup:

Anyone else in Canada gonna sign up? If you take the chance and put down a $1000 deposit, you come out the other end with a kit discounted by $500.
RippMods have proven that they can do an excelent job of producing a safe and powerful kit that will not blow up your engine. They have even done one for the 3S SOHC.

I know that a TT conversion would be cheaper and more flexible, but this kit comes with everything I need for a basic install (except headers) and full instructions, so I can install it myself. I don't want to go hunting for parts here and parts there. I want everything in a bolt-on package.
If I decide I want more power later on, I can add on bigger injectors, fuel pump, fuel management, etc.

You can check them out at www.rippmods.com

[Fast Eddie]

Originally posted by StealthFan
If I decide I want more power later on, I can add on bigger injectors, fuel pump, fuel management, etc.


Wont you need those anyway? I dont think your stock NA injectors can keep up with an extra 50HP. You may be able to use stock TT injectors. Those would be very cheap as the TT guys upgrade, and then have nothing to do with the 360CC injectors.
Probably could use a stock TT fuel pump too.

I will actually have both of these available some time soon, as i have a Walboro and 450's ready to go in, but dont know when it will be warm enough to do, so dont count on me.

My point is, i think they will recommend fuel upgrades. But i guess that depends on the pressure they are running off the blower...

[SpeedFreakSteve]

Originally posted by StealthFan
Negotiated my job back, so I'm soooo on the list to get a S/C !!:thumbup:

Anyone else in Canada gonna sign up? If you take the chance and put down a $1000 deposit, you come out the other end with a kit discounted by $500.
RippMods have proven that they can do an excelent job of producing a safe and powerful kit that will not blow up your engine. They have even done one for the 3S SOHC.

I know that a TT conversion would be cheaper and more flexible, but this kit comes with everything I need for a basic install (except headers) and full instructions, so I can install it myself. I don't want to go hunting for parts here and parts there. I want everything in a bolt-on package.
If I decide I want more power later on, I can add on bigger injectors, fuel pump, fuel management, etc.

You can check them out at www.rippmods.com

The advantages you list for a S/C aren't necessarily that big of a deal. There are full instructions for a TT conversion... its called the "TT Conversion Bible". I can't imagine the S/C instructions being any more thorough than that. Also, just because the S/C is called a kit doesn't mean its easier than a TT conversion. Just order all the TT conversion parts (except turbos) new from Mitsubishi for $2500 and it will come in one box just like a kit. :D

A guy on 3si named Iceman or something like that has a full TT conversion package available for under $1000. He spun a bearing in his engine so he's just going to do a engine swap now.

You wil need bigger injectors, fuel pump and fuel management if you add a S/C anyways. Going any more that about 50HP over stock and your injectors will be close to max duty cycle.

If you're really set on a S/C they're have been a few here and there showing up on eBay for cheap. Alot of guys seem to buy kits like that, and never end up installing them then cut their losses and put them on eBay.

[StealthFan]

I want the S/C to be different, so let's leave it at that. I've heard all the arguments for TT being better before.

As far as upgrading the fuel system, they don't know if it will be required yet. As I recall, the stock system could handle the 100hp increase in the SOHC. Upgrading increased the horsepower, but wasn't neccesary to make the kit work.
Once I get used to the increased hp and decide it's not enough, I'll probably do the upgrades...;)

BTW, the reason that S/C show up on Ebay for the cheap is because those specific kits are riddled with problems.

[Fast Eddie]

Adding fuel will only make more power if its accompanied by air as well.
This tells you that if they made less power with stock fuel system, they had the pressure lower than the SC is capable of producing.

To make more power with fuel mods, basically means they 'turned up the boost'

I think its a cool idea to try out the supercharger route. You will probably be the first one in Canada :)

Just remember that running lean will MELT your engine. I am running lean right now (just looked at my plugs the other day and they were pretty white) and i have STOCK turbos. Adding an entire supercharger system is bound to screw your Air/Fuel ratio.
The TT components are built to handle 320HP so they would be the perfect replacement and i bet you could get a pump and 6 injectors for $150.

Is it a Vortech or Paxton unit?
See if you have an option for the 'loud' or 'noisy' gearing. Nothing sounds cooler than the whine of a supercharger! It will make your car sound like a Labrador Helicopter :p

[SpeedFreakSteve]

Yeah like Fast Eddie said... if you're going to spend all that on a S/C, get some stock 360cc injectors, a TT fuel pump and fuel controlller. The injectors and pump can be had for about $100 USD.

I would normally say to put in a TT ECU instead of a fuel controller, but you have an auto tranny, and your tranny won't work with a TT ECU.

[StealthFan]

Thanks for the suggestions guys. When they finish developing it, they may end up saying it's best to have the fuel upgrades anyways. Nice to know there is a good supply of used TT parts out there.

Say Steve, did you get my PM I sent a couple of days ago? Check your messages.

[StealthFan]

Anyone else from Canada interested in this deal? Just 3 spots left to fill...:)

[DJ GTSR]

Well...im gonna have to save up for a couple years... lol this would be a 'next summer' mod for me :(. But...Hell Yea I want one!!!


whats the price in CAN for these anyway?

[StealthFan]

Prices are projected to be $3,000US for this deal and $3,500US regular price. At the current exchange rate of around 1.3, that would be $3,900Cdn for this deal and $4,550Cdn regular price.

Of course on top of that you need headers and probably bigger injectors and fuel pump.

When I get it installed this summer, I'll be sure to post some HP numbers.

[Monopoly]

just buy a TT eng and tranny! :D

saw one for sale on E-bay with less than 40,000 miles on it for $2,800 US!!!

[StealthFan]

Hey! Does the title of this thread say ANYTHING about turbos?!? Quit hijacking my thread!!! :p

[SpeedFreakSteve]

Originally posted by Monopoly
just buy a TT eng and tranny! :D

saw one for sale on E-bay with less than 40,000 miles on it for $2,800 US!!!

Thats like someone telling a Stealth TT guy to stop spending money on mods and just buy a faster car! :p

[DJ GTSR]

im just curious... i see you have an automatic tranny... im curious if you plan to step up to a stick shift to better manage the additional 100HP... i cant imagine driving an auto supercharged stealth...or a stock stealth for that matter :(.... just wondering...

[StealthFan]

I plan on sticking with the auto. From what I've read, it can take the extra HP. I don't plan on racing it, it's my daily driver and I just want a little more juice out of it.
Shift kit, high rev torque converter and LSD are all available for the automatic if I want more traction down the line...:D

[SpeedFreakSteve]

Originally posted by StealthFan
I plan on sticking with the auto. From what I've read, it can take the extra HP. I don't plan on racing it, it's my daily driver and I just want a little more juice out of it.
Shift kit, high rev torque converter and LSD are all available for the automatic if I want more traction down the line...:D

The biggest downside with the auto if you're pushing high HP is that you can't switch to a TT ECU with the auto since the auto tranny computer is integrated with the NA ECU.

The TT ECU adjusts your timing and injector duty cycle more agressively than the NA ECU to adjust to the power more adequately. This is important if you're running close to 300HP, and it would probably prolong your engine life.

I was working on a solution with a guy in the states to use a TT ECU as a piggyback fuel controller on a NA so that you could use 360 injectors without buying a S-AFC, and use the TT ECU with an auto tranny car. It should work.. just need a test car with datalogging, a spare TT ECU, and 360 injectors.