: Supercharger or Engine work ?
11-04-2003, 05:57 PM
In a few months, i will have enough money to get a JRSC.
Now, I'm thinking of scraping the whole SC idea and going with doing more engine work.
I use my car for everyday driving and was wondering what would be best for power, gas mileage and cost ?
1. Jackson Racing Supercharger 5-6psi ?
2. Get new head, header, exhaust system, intake manifold, cams, and some other necessary engine work to get it to 160WHP ?
11-04-2003, 06:05 PM
I would get the supercharger. All the engine mods will take away low end torqe and make driving on the street less comfortable, because you have to rev higher to get the power. I just read a mag today comparing the SVTF to the neon ST4 and Mazda. That was one of there complaints about the SVTF was the lack of low end torque. On the other hand, a supercharger makes the torque go up throuout the rpm range. Personally I would save for a turbo though. Super chargers take a lot of power just to run them. A turbo has less strain on the engine and makes better power numbers. But the cost is high
11-04-2003, 06:07 PM
Didn't they say that the HP numbers for JRSC was really conservative and there are potential for greater? If this was the case then I would go for the JRSC.
i have to agree with vanace! go with the supercharger! unless u can hang on a bit longer and get a turbo[scratch]
11-04-2003, 07:00 PM
I don't plan on going turbo. Don't have the cash and don't need more than 160-170WHP.
11-04-2003, 07:08 PM
I'd get the JRSC. I personally favor turbos much more than superchargers, but I'm just a poor high school kid and there's no way in hell I'm gonna shell out $5,500 for a turbo kit.
Can't you just add a smaller blower pulley and up the boost too? How much horsepower can you get out of it with the supercharger alone? And I assume the supercharger comes with bigger injectors and fuel pump?
Plus you could always modify the engine later with the blower when you have some more cash.
11-04-2003, 07:11 PM
Keep in mind the jackson racing kit doesnt make a ton of power and you will be lucky to get 5psi out of the standard kit, JRSC said that in Jan or Feb they will have the boost upgrade kit available for the focus which they say will put it at 8psi, but I have the basic kit on my car it it will make 5psi at peak boost at almost redline and I have gotten some replacement parts from JR to try to produce more boost (because they say the kit will produce 6psi) havnt gotten there yet and some other people arnt getting the 6psi as well so good luck on whatever you decide
11-04-2003, 07:27 PM
jrsc u will be lookin at 4.5 psi for boost. and even with work on the jrsc you will never see over 8-9 psi even with the big boost kit. the blower on it is just crappy and in my eyes JRSC was just trying to be first on the market for fi to make cash off of it real quick. they havent really followed their product up with anything like kits to swap blowers, and if im not wrong, they dont even have a new pulley out yet for their own kit.
personally, id do some motor mods stay n/a and maybe a 50 shot. without head work and just bolt ons and cams u can break into 14s as we all know. the amount of work and money to get a jrsc into 14s wont be anywhere near it. im not even sure what the fastest zx3 with the m45 is... after being out for 3 yrs now, u'd figure we would know something like that. we already know what the vortech kit can do in its early stages and its more than the jrsc will come close to.
11-04-2003, 10:31 PM
I vote naturally aspirated. What kind of engine work do you plan on having done if you go n/a?
11-04-2003, 10:56 PM
Originally posted by Infra3sv
I vote naturally aspirated. What kind of engine work do you plan on having done if you go n/a? [scratch]
What would it take to make a stock engine produce 180 crank HP ?
11-04-2003, 11:41 PM
I have no idea but built engines are awesome.
11-05-2003, 01:59 AM
I have no idea but built engines are awesome.
this is just my opinion... built V-8's are awesum.. built 4 bangers are like sewing machines on steroids. Buzzy and noisy. The go to noise ratio needs to be a lot better to come close to V-8 teritory.
11-05-2003, 02:12 AM
Originally posted by vanace
built 4 bangers are like sewing machines on steroids. Buzzy and noisy. The go to noise ratio needs to be a lot better to come close to V-8 teritory. [/B]
lmfao thats great...all of u say its easy to get teh focus zetek into the 14's with minimal engine work....ummm how is this? I am just plain old not getting what u sayin...I read other threads and got opinions of header, exhaust, udp, intake...now what are cams? yah I'm slow I should prob start a new thread but everyone will laugh at me :)
11-05-2003, 02:20 AM
ported 2000 manifold
stage 2 cams
under drive pulley
u should be able to get high 14s with that and some decent rubber.
11-05-2003, 03:58 AM
ok the JRSC gets my vote, but so does the built motor, reason being you can run the JRSC on your motor right out of the box, and upgrade your motor as you go along, im not saying what im doing is the best but it seems to be a good idea so far :get a used M45 (standards JRSC kit for ZETEC) and use that w/ my bolt ons until i get some more cash, after mony is aquired, build race motor (FR head, rods, pistons(slightly higher comp) and all the little stuff, maybe even a CGR block, but i doubt it, and build a tranny on the side too, LSD, light weight flywheel, upgraded clutch, and overhaul the used tranny) about the same time ill start upgrading from the M45 compressor to the M62, this will take about the time it takes for my warranty to run out to complete all this if i go all the way through w/ it, on top of all that ill probably run a 100+ shot of nitrous, so youve got built motor and tranny, w/ small but good boost, and a bit of nitrous, for some reason i like this combo, even though turbo would probably be easier, but i think i will have less problem tuning this than say a high boost turbo kit, anyway the M45 will only make about 180whp w/ bolt ons, which is still not too bad for a bolt on that passes emissions IMO
11-05-2003, 04:20 AM
i wonder if there is anyone hitting 170-180 with JRSC. ive seen i think 160 once but that was the highest. mofo has the right idea as far as custom fabbing the m62 onto our zetec. i just wish JRSC would have done that so it would be custom, just fabbing.
11-05-2003, 04:28 AM
yeah i tried talking to them once, and i guess the guy answering the mail there just didnt give a crap and wasnt any help, i doubt ill even use their M62, and i might end up building my own manifold, just for the sake of time and money and functionality, i cant say iv seen anyone running 180 w/ the M45 either, those were #s given by Focal a few times awhile back for the maximum out put of the system on a motor w/bolt ons
11-05-2003, 10:16 AM
What's weird is that the new Ford Focus Handbook uses the JRSC M62 for it's supercharger testing like it's the one/option you get from JR...[confused]
Euro, with the items U listed to get 14's, how's the car's normal operating characteristics as in idle, low end torque/HP and gas mileage ?
I need to know these things b/c this car will be my everyday driver and I don't mind losing some MPG but don't want my car to be down in the high teens or low 20's for my highway MPG. I also don't want real rough idling if it's possible.
11-05-2003, 11:21 AM
stage 2 = loping idle, crappy low end tq and hp, and your gas mileage will still be similar to other 4 bangers on the road. You'll like the power between 4000 and 6000 rpms though. It's just not comfortable to be driving in that range all the time if you do a lot of city travel.
I'm going with a supercharger (whichever gets me around 225whp...my other mods are in my sig below). I don't really like the Vortech or the current JRSC. Someone needs to get up off their @$$ and make me a good supercharger before I go postal. I'm hoping to run an average 7psi, and have room to bump to 9psi and still have 1-2 more capable from the SC if I want to in the future.
11-05-2003, 02:36 PM
The problem with fi on these motors is the stock compresion ratio. To do it right and make the most power you need to change the pistions to forged and dished to get the durability and about 8:1 compresion. All the superchargers on the market are set up to bolt up to a stock motor.
11-05-2003, 02:44 PM
I like Vortech SC, don't like having to relocate shit around, but otherwise its nice, and who here said "I like low end torque and hp"...."I'd get a turbo" I'm fairly certain that this concept is fictitious, that's like saying, I like bacon, that's why I eat cows. [???:)]
11-05-2003, 02:58 PM
Superchargers generally claim a 50% gain in hp/tq across the whole rpm range, so with that in mind, I'm supposted to be at about 195whp with a JRSC. My issue with it (other than that doesn't hit the # I'm after) is that not even their project car showed this much power because it was stock. Do you guys see me making at least this whp above since the SC should "complement" my current mods? I think Vortech claimed 55% which would be a weee bit over 200whp which I could almost settle with, but I'm really looking for about a 70-75% increase. I'll get new rods/pistons and run higher octane (nothing over 92 octane), but I need the #s from the Supercharger first.
BTW: I'm also upgrading flywheel & lsd AFTER I get my superchager installed. It's gonna be fun without that LSD for a while. I bet I buy new tires within a year after supercharging. Low end power is my friend....
11-06-2003, 09:05 AM
who here said "I like low end torque and hp"...."I'd get a turbo"
read the focus fanatic mag. article on the turbo installation, low end torqe went way up. And it makes perfect sense why it went up.