400 to 450 Horsepower??
That is what Mistress should make with the new supercharger. No, it is not ordered yet, but we are getting close. After years of delay I am finally there. First it was slow at work with concerns about layoffs and money. Then some health issues and other delays with life. Then it was too busy at work… Then lockdowns and more uncertainty. Then we moved, lived in a stationary camper for six months (don't do that) while our new house was built. Finally moving into the new house and building a basement studio for my wife…
Enough waiting. I want that horsepower. Will it actually make the car go faster on course? Perhaps. Will it make the car harder to drive? Perhaps. Will those two things balance out? I’m not counting on it. The slowest part of the car is still me. These changes will make it all the harder to keep up with the car.
Will it make the car more fun and a little more unusual? Oh, hell yeah! More four wheeled drifts and spin outs on deck!
But it really is time. It is the next thing… The car has basically been ready since 2017. I rebuilt the engine with this speciffically in mind right down to the 9.5:1 compression ratio. The problem has been that life in general won’t leave me alone. But that is life.
Procharger makes the only kit for SN95 V6 cars. Tom at Supersix Motorsports is getting a price for me. That said, the Procharger complete kit is only for a stock 3.8 ltr car. Mistress is no longer even remotely stock. She is a 4.2 ltr stroker with all forged internals, custom heads, and a whole slew of other changes.
This engine is late 1970’s technology, stolen from Buick, updated over the years by Ford, and then upgraded about as far as it can be without changing the overall configuration. Let’s give it that final tweak.
For this situation Procharger has a High Output “Tuner” kit. It is missing the higher flow fuel pump, injectors and the “tune”. It includes the supercharger, mounting hardware, tubes and intercooler.
So – Working through some online calculators for that HP range: 450 HP with a Brake Specific Fuel Consumption of 0.6 (typical for forced induction) and an 80% duty cycle (also typical they say) I get an injector flow rate of 591 CC/min.
For the fuel pump: 450 HP at 90 psi baseline pressure and 11 psi boost (standard for the Procharger HO option) begets 231 LPH at 101 psi. All this from a site called Raceworks.com.au.
Some Saturday night hunting on Summit yielded these results: DeatschWerks Fuel Injectors DWK-18U0000606 rated at 630 CC/min. Also, a DeatschWerks Fuel Pump DWK-9-305-1032 rated at 340 LPH and 100 psi. Both are compatible with this car. That should do it -Yes?
I will probably go back to VPN for the tune. They have done this before with this engine although this a bit of a throwback for them.
Lead times will put the kit out into June. First event is in late May (SVR, Oscoda, MI I think). So, I will be running NA for an few events yet. I am now a member of Saginaw Valley Region again. That is where I started Autocrossing in 2011. Also, still a member of the Lake Superior Region. I will be running with both this summer.
Lots to do: Mistress needs two wide band units installed (they will go in the center vents). She needs a complete work over of suspension, brakes, etc. Last year she was run hard and put away wet (No really. It rained at the last event and I just washed her a few weeks ago. She was filthy with ghosts of the numbers still in the grime). Tires need to be rotated (I will replace them mid-season this year).
Now that my wife’s studio is finally finished I can sort out the garage. Most tools are still in boxes. I hate moving. Can’t find anything. Hopefully we will never do it again. This is intended to be our last home before “the home”. So far, so good. We really like it here.