High-revving PWSC buildup.

[OmniFocus]

Alright, so....

Say I want to spin a Zetec as high as 8,000 RPM, what would be on the shopping list?

First of all, I'm sure you're all wondering WHY I would want to do that.

The limiter on my stock tune is at 6750, which is pretty much the point where the car is making the most power.

Minimally, I'd like to run to 7,500, which would not only provide more top-end boost but allow more speed before each ship. The top speed in each gear would go from 33, 56, 83, 117, 157 to 36, 62, 92, 130, 174 respectively.

I currently have an SVT block with SVT rods and JE pistons machined to fit, ceramic coated.... ready to bolt-in.

I'd need a high-RPM oil pump, yes? And more potent valve springs?

I'm trying to do a reality check with this before I start spending money.

Thanks for any input on the matter.

[WRCwannabe]

why don you just over spin the pwsc to get the power lower and more power throughout the rpms.

i think you would have to de-stroke it, (meaning different crank)
usually destroking it, it will allow more rpms safely.
but then again i may be wrong

[OmniFocus]

Well, that's what everybody else does, but I'd like to give it a shot doing something differently.

This would also give me much more range in gear. I'd sure like to see the backside of the power hump so that I'm not always shifting well out of the peak.

[WRCwannabe]

well if you are already surpassing peak power then you arent giong to make anymroe power getting the engine into higher rpms.

[OmniFocus]

I'm pretty sure I'm not even close to surpassing peak power at 6750.

...and actually you DO want to see your horsepower peak, because when you shift you want to fall onto the other side of the hump, so that on average, the majority of the time you spend in gear is making as much power as possible. Right now it falls way out of the power band on each shift.

I'm not really here to debate WHY I plan to increase the revs, just that I'm doing it.

The SVT tune runs to 7200, while I'm stuck with a frustrating 6750. Those last few revs really count. Taking it to 7500 would be icing on the cake, and work really well with 4.06 gears.

[Terrible1]

I'm working on doing this same thing Omni....
I plan on an 8000rpm redline and high compression! Like 11:1 or 11.5:1
I agree on the rpm falling into the "dead spot" with the stock redline. I rev my standard zetec to about 7000 now but it still isn't enough. The close ratio gearset I have my eye on should cure that problem though

Looks like we're about the only ones looking into doing a high rpm PW setup!
Let the race begin

[Terrible1]

What do you plan on using for cams???
I've been looking at the McNews set... but also the Crower Stage2's just caught my eye.
Any ideas

[BlkThunder]

I think the better question will be how much more will the extra rpms increase your intake charge temps? I know that the PWSC is intercooled but it doesnt eliminate all the heat, just cools it down and Roots blowers are notorious for increasing charge temps. The thing that would concern me is that you'll be pushing more heat into a high compression engine at high rpm and I have a feeling you'll have to pull so much timing from high rpm that it'll be a wash.

It is however a unique idea. I've always wondered how my svt or any focus would drive with higher redlines and shorter gears. I also have wondered what it would be like if someone came out with a dedicated trannie to go from the Auto-x gearset to more of an acceleration gearset.

[OmniFocus]

Originally Posted by Terrible1

What do you plan on using for cams???
I've been looking at the McNews set... but also the Crower Stage2's just caught my eye.
Any ideas

None yet... Mitch's cams always had me intrigued, but they're no more, I believe.

I'm curious to see what stock cams could accomplish, but my hunch is that something bigger would really work well. Perhaps just dial out some overlap from the bigger cams and call it good.

You're looking at more compression than I am.... which makes sense for a race car. I need to calculate the current compression ratio, but with the machined JEs, my compression should be somewhere between my stock 9.6:1 and the SVT's 10.2:1.

As for charge temps.... they really shouldn't be any worse than if the blower had a smaller pulley on it.

I'd like to try this with the stock size pulley, and at most bump it a little.... I more want to optimize the PWSC setup than shoot for the moon. I'd prefer a drivable 260whp to a lit-fuse 300whp.

[Terrible1]

^^^ Those are my thoughts exactly. I'm not really planning on going more boost... but there is always the possibility I might throw an overdrive pulley on there for a couple extra HP.
My main goal is similar to yours. Do come clean-up work on the blower casing, port match everything to the head ( haven't decided on which head yet ) and build it to handle 8000rpm. Now I'm not saying I'll be taking it to 8 grand every time but in that situation where there is a corner coming up and you're already at 6500rpm you'll have the option to just "ride it out" to the corner instead of having to grab the next gear for a second or 2. I'll most likely shift between 7000-7400 most of the time.

The bump in compression is out of necessity. I don't believe it will be on the ragged edge or some inefficient heat pump by any means at all! In my opinion it will optimize what is already there and make it much more efficient and responsive. Higher compression isn't the enemy... inefficiency is!

I believe with that setup and adding NO additional boost reaching 265-275whp is very achievable!

I guess we'll just have to prove em wrong

[OmniFocus]

You also have the extra advantage of high octane, which REALLY helps.

I plan to tune this one myself, so I'll have my fingers crossed... I've only worked with Duratecs so far.

[Terrible1]

I'll probably tune mine myself as well seeing as how there are 0 tuners anywhere near where I live.
And yes... the possibility of using C12 or C16 race fuel does help TREMENDOUSLY

[Terrible1]

So I'm starting a shopping list for my build:

-JE pistons 10.8:1 compression
-Eagle or Crower rods
-ARP bolts/fasteners EVERYWHERE
-CFM billet oil pump
-entire rotating assembly lightened and balanced. Everything from the flywheel to the crank pulley!
-ported head ( haven't decided yet... Ford Racing, FS Werks etc )
-Crower springs/retainers
-Either McNews blower cams or Crower Stage2 FI cams
-Fidanza cam gears
-RC Engineering injectors
-SCT proracer software w/X-Cal3

Anything I'm missing???

[WRCwannabe]

why dont you build your tranny with 4.06 gears or maybe the even higher 4.xx gears?
then if that doesnt help then build a screamer.

[BlkThunder]

http://forums.focaljet.com/zetec-tun...res-plans.html

has all the lightweight high revving goodies that you're wanting to go with. Id ask his suggestion.

[WRCwannabe]

http://cgi.ebay.com/ebaymotors/FORD-...Q5fAccessories

[Terrible1]

Originally Posted by WRCwannabe

why dont you build your tranny with 4.06 gears or maybe the even higher 4.xx gears?
then if that doesnt help then build a screamer.

I already have 4.06 final drive and it's still not enough. 5th gear is way to tall and out of "sync" with the other gears. 1st is way way way too short, 2nd and 3rd are bout right and 4th could be a bit shorter.
And by the way... there aren't anymore options for final drives unless you go with a full custom close ratio gear set from quaife... which I plan on doing! Then you get to pick pretty much any final ratio you want

[OmniFocus]

....and with all those extra revs, you probably wouldn't need fifth. You get an extra 21 MPH out of fourth!

That's one of my bigger motivations, especially for hillclimbs and autocrosses where 2nd is too short and 3rd is too tall.

[Stolle]

wow. no randy from FS in here? i remember him telling me on the phone that they took a stock non svt zetec messing around on the dyno to 8500 a couple times and the imfamous oil pump gears never sheered off....

the svt bottom end with the je and svt rods i would think would do 8000 easy....prolly 8500 max....

i know of a guy that is revving to 8000 on non svt stock bottom end. used to be a friend of besthaticouldo...its a white hatch in southern cali....forgot his username on here...

[OmniFocus]

Randy is probably enjoying himself in Vegas right now. I hope to drop by to say "Hi!" tomorrow.

[blueovaldave]

I have had the best luck on mine with the Comp Stage 2, I think they were old grind. The newer grind is more mild.
I will tell you that Ray at McNews has a set of cams that are very similar to the Comps.
I have run stock, Comps and one other and found the Comps the best. Wish I could find the money to put a set of Rays in it and see what they would do.

[ZX3TUNING]

just a little news i just got off the phone with my cam builder and he has 2 new sets of Focus blanks in stock is if anyone is serious about some cams for a PW car....

[ClintB1321]

lorin, shane...

you guys just need turbos

[ZX3TUNING]

i can have those made if there is enough interest.
most turbo guys opt for the cheaper method of "more boost" vs a $800 cam!

[FORDSVTPARTS]

This may be a bit off topic but why not do a Getrag swap? 1st and 2nd are a bit long but 3rd through 6th are pretty much right on top of each other and they do a great job keeping you right in the meat of the powerband of an SVT which is about 5000-7000+

Just a thought