Is Vortech the way to go ?

Mad1stGen

Mad1stGen

Registered
Well, my 2nd vortech-ed car is finally done. I just picked it up from Lidio at Alternative Auto. For starters the car put down 345RWHP and 328RWTQ at 8 psi after several tuning runs. The numbers might be even higher if we let it cool down some more. But it's not all in the numbers ...

Currently, the car is a 97 Mark VIII base, and only has a cobra intake and an s-trim @ 8psi with all the supporting crap like 42lb injectors, pro-m MAF, big pump etc ... Exhaust is still stock, gears were replaced with a 3.27 trac-lok unit from a 99 cobra.

The car is very quick, it has a lot more TQ than the 95 did. Even with the 3.27s it feels great of the line. I am not even going to mention how it feels when it gets going, it's plain crazy and this is why I still like the centrifugal blower. It seems like your foot is glued to the loud pedal and you don't want to let go.

We learned that the IMRCs open up at 3k RPMS and it was too early as you can see on the power curve. It was moved to 3.4k RPMS.

http://mywebpages.comcast.net/jeremi/images/s-trim_dyno.jpg

In the essence, if you want to make the pig quicker, vortech is the ticket. For the money, it's definitely the best mod that always delivers.

I expect it to run either a high 12s pass or maybe even btter with good traction and some exhaust work. We'll see, but this has to get me through the summer ... }(
 
RE: Is Vortech the way to go ?

Sage advice, I'm slowly and painfully working my way there. Usefull info about the 3400 rpm, but gen1 IMRC's are vacuum controlled arent they? darn. I can't believe you have 2 sc'd marks now, is the new one an S-trim or another E-trim?
 
RE: Is Vortech the way to go ?

he sold the other one

you'd cringe if he told you how much (little) he spent. it's disgusting. just goes to show it pays to do your homework.
 
RE: Is Vortech the way to go ?

This is an s-trim compressor pullied with 3.48 pulley and getting again ONLY 8psi. I already have an urge to go bigger, but we'll see how the car runs for the next few weeks. As always, the key to success here is the tune. 2nd gen cars have a lot more things to be worked out in the tune, but on the other hand the eec V computer makes it a lot easier, and actually possible. I'll post some install pics later on.
 
RE: Is Vortech the way to go ?

[div class="dcquote"][strong]Quote[/strong]
... Usefull info about the 3400 rpm, but gen1 IMRC's are vacuum controlled arent they? darn.
[/div]

The Gen1 IMRCs may be vacuum controlled, but the strategy is the same. At 3000 rpms the EEC signals the IMRC vacuum solenoid to open the IMRCs.

Look forward to seeing your work at Carlisle, Jeremi. :)
 
RE: Is Vortech the way to go ?

[div class="dcquote"][strong]Quote[/strong]
[div class="dcquote"][strong]Quote[/strong]... Usefull info about the 3400 rpm, but gen1 IMRC's are vacuum controlled arent they? darn. [/div]The Gen1 IMRCs may be vacuum controlled, but the strategy is the same. At 3000 rpms the EEC signals the IMRC vacuum solenoid to open the IMRCs.Look forward to seeing your work at Carlisle, Jeremi. :)
[/div]

Strategy might be the same, BUT on the EEC V cars you can actually change the RPM point when they open up.

I'll be there ...
 
RE: Is Vortech the way to go ?

Is it okay to supercharge a car and leave the exhaust alone?

Intuitively, more air in means more air has to come out...
 
RE: Is Vortech the way to go ?

Well, the car won't reach its full potential for sure, but as long as the "numbers" are right and the a/f is set for particular exhaust, it shouldn't hurt anything. However, I am contemplating either a full 3" or electric cutouts.
 
RE: Is Vortech the way to go ?

[div class="dcquote"][strong]Quote[/strong]
Well, the car won't reach its full potential for sure, but as long as the "numbers" are right and the a/f is set for particular exhaust, it shouldn't hurt anything. However, I am contemplating either a full 3" or electric cutouts.
[/div]

if the exhaust is really restricted EGT can get too high and you can burn a valve.

So no more than a couple passes in a row until you get headers.
 
RE: Is Vortech the way to go ?

...or EGT probe plugged into my wideband that should be here anyday now :eek:

I do not want another loud lincoln to be honest. Cutouts right after the cats and a custom program for them is what Im leaning towards ...
 
RE: Is Vortech the way to go ?

[div class="dcquote"][strong]Quote[/strong]
...or EGT probe plugged into my wideband that should be here anyday now :eek: I do not want another loud lincoln to be honest. Cutouts right after the cats and a custom program for them is what Im leaning towards ...
[/div]

don't make it loud then.

get headers, then an x-pipe, then a dual in/dual out muffler, then 2 mufflers at the back. or get headers and two dual in/dual out mufflers under the car, and two mufflers in the back. Or headers and a y-pipe into a single 3" pipe back to another y into dual 2.5" with two mufflers.

any one of those combinations will make more power and be plenty quiet.

you can use an EGT gauge but it won't necessarily tell you how hot the localized temperature will be right near the heads on the most restrictive cylinders.
 
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