Hey I'm really, REALLY wanting a blower and can't decide on which to get. I eventually plan on forging but that's many years away when the motor starts to get old-figure 2020.

For now I want a nice safe combo to run for my car. Although I'd love 500rwhp I'd like to be conservative for the motors sake. I figure the car is badass enough now (for me at least ) so a hundred more should keep me happy.

NOW

.......for the question

What is the limiting factor of the motor as far as safety. Let's take the V3 brenspeed package and the stage 2 brenspeed saleen package.

The saleen could make up to 430rwhp at 6.5psi
The vortech makes maybe 400rwhp at 8psi

SO........what puts more wear/strain on the motor----the higher boost from the vortech or the higher horsepower/torque of the saleen package?

Thanks, Scott

 

Torque of the Saleen will wear the engine faster since its building boost at lower rpm's. The Vortech only builds boost at higher RPM's and is safer on the engine.

 

it is also important how the driver pushes the car. if you dont peel out at every stop light, and drag race at the track every weekend, either of those SC will do nicely. i think each of those SC will pose different advantages and different disadvantages. i agree w/ A. Tider in that the centri will be less strain on the engine, but only bc you wont be in the boost like you will w/ the TS. w/ the centri it will be harder to go into full boost bc you have to max out the rpms, but w/ the TS you can max out the boost easier bc you can get instant boost w/ sufficient throttle. but if you are a street freak and are boosting it up w/ your vortech at every stoplite and maxing out the rpms then the wear on the engine will be more equal w/ the TS. w/ more boost comes more compression on your engine and more wear and tear.

 

I believe the Vortech to be easier on the car as well for the above mentioned reasons. Both kits are nice, but the value nod has to go to the Vortech which is ultimately what pushed me in that direction. The Paxton HO kit for $4995 is a strong deal too, but the power level was more than I wanted to mess around with on an otherwise stock car.

 

Well the short answer is how you drive it will affect it more that which SC you run.

But IMO the Centri will be harder on the motor. Miles dont kill engines near as much as RPM's.

With a centri you need RPMs to make boost and see/feel your hard earned money.

With a TS you get boost and torque very low in the rpm band so dont need to rev it as high to get moving. That coupled with the lower boost pressure makes me think the TS is the way to go.

That being said, dont really worry about it. There are way too many varible that come into play here and type of FI isnt a major player if you keep the power conservative. Just be extra dilligent with the maintenance, oil changes etc and you car will last longer.

Anytime you go FI you are increasing the risk of blowing the engine. There is no free lunch so you just have to accept it. One bad tank of gas and BAM etc.

Good Luck.

FI is fun.

 

I definitely agree with you there. Although I have heard good things, that much power (even with the low torque) is too risky IMO----it's starting to look like the V3, alot based off of your threads mudflap!

 

I know you don’t want to hear this but there isn’t any FI that is totally safe. Guys have pushed the limit with over 500 rwhp and not had a single problem others have blown their engines at less than 450 rwhp. The tune is very important as the rods are the weak link in the stock engine and you have to make sure there isn’t any detonation. All it takes is one rod that is a little weak and there goes your shortblock.

With that in mind for what you are describing as your needs I would recommend a single turbo kit over the TS or a Vortech. The turbo will put less stress on your engine because it does not stress the crank like a supercharger does from the belt drive. There are many advantages to a turbo but one is the ability to increase power at will with a simple boost controller. You can set your boost low with say a 5 psi spring in the wastgate for daily driving and just turn it up to 9 or 10 psi with the controller when you want to really go.

Another thing is when you desire to go with more power and a built engine at a later date you will already have everything you need. Just put a 10 psi spring in the wastgate and you can turn it up to whatever you need with the controller.

Earl

 

The turbo is a good choice, but it came down to cost for me. I couldn't find a kit I liked for less than about $5700. Since I'd never really be turning up the boost and just running 5lbs, that seemed like an awful lot of money for my purposes.

 

Talk to Jim Napier at Turbohorsepower.com. At 5 lbs you don't even need an intercooler, I think you will surprised what you an get a turbo kit for.

Earl

 

Too late now, lol. Thanks for the link though, perhaps it'll help someone else...