nice info!

 

damn to think im going SC in a few days.. so exciting.. yet so nail bitting.. hope technosquare can tune ma BB when its all set up and every thing..

 

Congrats but a word of caution make sure you have a back up plan in place if your motor goes. I did not think I would break a connecting rod but it happened on the dyno while being tuned. I thought it was a possibility of it breaking but I read so many people say how safe up to 400whp on stock block was but let me tell you it's a huge risk. Cause now I am replacing a motor in a car with 24k miles on it. I guess I just want more people to be aware and plan accordingly cause I know I sure didn't. Good luck and make sure to have someone who has tuned S/C vq's before do all the tuning cause there is no room for error.

 

Well lets be careful with these opinions . . . "Huge Risk." Most people have no problems with going FI, and the ones that do, usually have pre-existing engine conditions that the FI just happens to put it over the edge.

Risk, sure. Huge risk? No.

 

You can discribe it how ever you want but my opinion is that for me it was a huge risk that if I would have known how big a risk I would not have made the leap to FI at this time. I am tring to be a voice of caution cause when I was doing my research there were not very many words of caution out there it gave me a false sense of assurance. I honestly think the tunner I went to had a big part to do with my failure. So you speak from your experance and I will speak from mine and from my experance. It's a HUGE RISK to go with anything but the stock Vortech pullie and a tunner that has not done alot of VQ's.

 

So how do you know the same thing wouldn't have happened with the stock vortech pulley on your engine?

 

because he never would have gotten up to 13psi on the stock pulley

 

What he said Remember Vortech has spent lots of time and money research and developing this s/c for the G/Z's I have to believe there is a reason they went with the pulley they did. There is always a trade off between all out performance and reliability and the best tuners/builders are able to walk that line but if your just starting out and can't afford a new engine I would and should have stayed on the safer side of the line. I do enjoy the open debates keep them up.

 

Are you saying you should never run another pulley besides the one that comes with the kit?

I can't speak from experience since I'm not FI, but I do plan on going with a TT setup in the future. I'm lucky to have GTM 15 min from my house . Upon my reading of forced induction and different builds, it seems to me that as long as you have all the correct supporting mods, and most importantly a good tuner, you should be ok.

Of course there's always going to be a risk involved with any modification, especially FI, but I wouldn't necessarily call it a HUGE risk as long as you have done everything correctly.

But hey, I'm still learning, so I could be totally wrong haha.

 

^ The lesson to draw is that going FI on an engine that was never designed for it is a risk. Regardless of how 'safe' something appears based on threads, half opinions, etc, going FI will shorten the life of your engine and could lead to catastrophic failure. By going for even more power than was originally intended for the FI system, you're just stacking the odds even further against your engine.

 

Oh I definitely understand that going FI is putting a strain on a motor that was never intended to have it, and that by doing so, I'll always be running the risk of my motor failing. I'll be going with more of a....conservative build to where I'll try putting the least amount of stress that I can on my motor. I'm more of a torque guy rather than high hp, hehe. Thanks for the info

 

Well no wonder. I dont know anyone who recommends going with the 2.87 pulley. I agree then thats a huge risk. 13 pounds is a bit much for a stock motor.

 

Tq and hp arent independent characteristics. HP is a function of torque and us merely calculated (not measured) from the torque. Torque is the force an engine produces while hp is how much work that force produces over a unit time.

 

13psi doesnt mean anything.

I ran 17psi on my stock block for 2 years with my vortech. It was only 400 ft-lbs of trq.

Trq breaks things, not some measure of back pressure. So keep running smaller pulleys til you get to the 370-400 trq range.

 

http://my350z.com/forum/forced-induc...ht=vortech+faq

that will help you answer a lot of questions.

my setup on stock block was
vortech 2.87
440cc dw injectors
ss box ecu
headers, test pipes, borla exhaust

The 440's had plenty left on them with a vortech on stock block and 2.87 pulley. I switched over to a built block with heads and cams and i maxed out the injectors. I'm also using Osiris for tuning now. osiris is great.

If you are planning on using a built block later then get DW 600's, but if you're just going to run the stock block the 440's will be plenty.