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Old 04-18-2010, 07:29 PM   #1
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Turbo/Supercharger Kit Options

Any kits out there for an AT that run safe with a stock engine at low boost? If not, what is would be needed to run safely for daily driving? Sorry if this is a repost but I couldn't find any threads on this.

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Old 04-18-2010, 08:21 PM   #2
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Any kits out there for an AT that run safe with a stock engine at low boost? If not, what is would be needed to run safely for daily driving? Sorry if this is a repost but I couldn't find any threads on this.

thanks
This is a good option for a daily driver. Also very rare to find new.
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Old 04-18-2010, 08:37 PM   #3
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This is for Zetec engines only. If you have an SPI, there are no kits available.

F2 is working on a Rotrex supercharger kit which is to cost $3200-3400. I don't think they have finalized prices. Might want to check with them or someone who knows will reply here.

FSWerks is working on a turbo kit which is to cost $3400ish. From what I understand they are few months away from bringing the kit to market, and ATX kits will be last.

Both of the above kits will out power the JRSC in the link, mainly in torque. The JRSC is pretty much at it's limit power wise. I'm not sure what numbers an ATX would get with it and numbers haven't been released for the F2 kit or the FSWerks kit that I know of. All three kits will be complete bolt on with tuning.

Tom, who has the Focus Power forum here on the board has a partial kit he sells, but honestly I don't know what it costs and what parts you have to buy to complete the kit.

These kits are all designed to work on stock motors. More power can be had out of the Rotex and the FSWerks kits, enough to blow up a stock zetec. The same can be said for Tom's kit too which I believe might make the most power out of them all.

The biggest problem you have is your 02 atx which can't handle a whole lot of power. The tuning in these kits compensates by adjusting the fluid pressure in the tranny's valve body at wide open throttle to make the tranny shift harder (faster) helping to lower the friction temps to prevent wear/glazing of the clutch bands. With the stock settings, the tranny is slower (softer) to shift. While this suits the power of a stock engine, it is not suitable for a performance engine at all.

You can get into a whole lot of money pretty quick beefing up an atx to handle gobs of power. All of the kits I noted above will eventually do in a stock tranny, but that depends more on how abusive you are driving. Out of the lot the JRSC will make less power and torque so theoretically it's the least hardest on the atx than the other kits will be. The pricing of the kits also reflects the power output. So your budget will have a lot to do with any decision.

There will be people who are ardent believers turbo is the way to go because turbos make lots of torque which is much more usable on the street and track. Turbo's also are the easiest to increase power with as turning up the boost is not difficult at all. You should know that turning up the boost will mean getting a new tune. Tom offers lifetime tunes with his kit which makes thing easy. Remember though you can't overpower the stock zetec, so increasing the boost may/will also mean upgrading the engine itself with beefier rods and pistons.
I'm pretty sure once you are putting out 225whp on a zetec, you are close to pushing too much power.

While I have provided all this information, more will be added by others. I have not had a turbo or supercharger on my car, so I as speaking from the experiences of the board members over the years. Consider my reply "speaking generally". Those running turbo kits or superchargers will be much more precise in their information.

All that being said, the JRSC is considered an entry level forced induction kit. People say it is a fun kit, and as I pointed out puts out less power and also costs the least to buy. The one in the link is rare as these kits have been out of production for a couple of years now. So many are bought and sold used.

Turbo kits are a definite step up from the JRSC performance wise. Most of what you find used turbo wise are kits people have put together themselves. The FSWerks kit, when released, will be the only complete out of the box (all new parts) turbo kit out there for the Zetec.
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Old 04-18-2010, 09:32 PM   #4
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phatcity covered the bases really well but i still want to emphasize a few things.

you have been better off to ask this in the boost forum. someone will probably move this thread there eventually but in the mean time i think we can help you out. with a tune from somebody who knows what they are doing you can tune the ATX to hold a little more by upping the fluid psi for quicker shifts. there are some people who have run a stock ATX on 200whp or so and maybe more for a very long time with no issues and there are some people who pop the tranny within a few months. you will be taking a gamble either way but you will be greating increasing your chances if you have a good tune and you will eliminate the chances of popping anything all together if you upgrade some bits and bobs (like the valve body for example) in the ATX. lentech has the best parts for the ATX.
http://www.lentechautomatics.com/4f27ehome.html
a power works S/C is going to be your best supercharger as far as peak power numbers i believe. you can find complete used P/W kits for cheap. however if you end up wanting more power in the future you need to just bite the bullet and go ahead and get a turbo kit. it wont be much more and you will have plenty of room to grow instead of being maxed out with a S/C and thats all you can do unless you piggyback nitrous or switch to a turbo kit.

by the way, you could run a 400whp engine on a stock ATX every single day without hurting the tranny just so long as you dont punch it every chance you get. if you abuse the car it will let you down at some point. but a bone stock ATX with a supercharger should be okay as long as someone like tom does the tuning.

EDIT: BTW a bone stock engine can stand up to around 10-12psi from a turbo kit which comes to between 220-250whp. after that you need to upgrade to forged pistons and rods and ARP hardware. i dont know for sure if there is a S/C kit out there that makes that much boost. ive never been much for superchargers on 4 bangers
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Old 04-18-2010, 09:46 PM   #5
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I totally forgot about the Powerwerks kit. It too isn't produced any more. It features a larger supercharger and intercooling which combined makes more power and allows for more power if you want to increase the boost with a smaller pulley. While still not quite in the category of a turbo, it is the most powerful supercharger that's been manufactured for the Zetec to date. The only downside I see would be few ATX kits were actually sold so coming across one used will be rare. Now I say that and one could show up in the classifieds tomorrow. But I haven't seen one in over a year.
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Old 04-18-2010, 09:49 PM   #6
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the kits differentiate between manual and automatic transmissions? the engine is the same so why is the kit different? once again im not big on S/C for 4 bangers. i know you can use the same turbo kit between an automatic and manual focus
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Old 04-18-2010, 09:54 PM   #7
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the kits differentiate between manual and automatic transmissions? the engine is the same so why is the kit different? once again im not big on S/C for 4 bangers. i know you can use the same turbo kit between an automatic and manual focus
There is a difference for the PW kit. I can't recall what exactly it is, but yes, two different kits were sold. The JRSC was/is a one fits all.

As to turbo kits, there is a slight difference in the piping because of the transmissions. So turbo kits are either manual or automatic as well.
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Old 04-18-2010, 10:06 PM   #8
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for cost wise, a JRSC will be your best bet for sure! the hp isn't what kills the tranny, its the torque! the JRSC will output about the max torque of an auto. very safe on a stock motor. the PW can easily mess up an auto as can a turbo kit.

If you are interested, i do have a JRSC kit for sale.
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Old 04-18-2010, 10:34 PM   #9
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and there ya go!
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Old 04-19-2010, 08:00 AM   #10
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I bought my focus with a PWSC it had the bigger 2.8" pulley and a stock motor. with full 2.5" exhaust,BBK TB, I got it home on a friday drove it a little hard that night and sat. it snapped all the connecting rods at 4000rpm's. I dont know what HP this setup would have been making but im sure it wasnt 225 HP. Im not sure to this day what caused the failure,but i will say it was pretty damn quick and snappy for the 60 miles i put on it.LOL
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