Best starting point for mod's?? Eaton blower?

99 Cobra

99 Cobra

Member
#1
#1
Hey guys, I have a 99 cobra that is essentially bone stock with very low miles.. lately i have been getting the itch to step my game up, but my lack of knowledge always causes me to postpone potential projects... One idea i have been toying with for a while and am very interested in is to put a supercharger on, as i imagine they are the best bang for the buck. Money is a factor in my decision making so i have been thinking that the stock 03-04 Eaton blower might be a good choice.. can anyone shed some light on this or give me other suggestions about where to start finding some more HP..

Thanks a ton,
Andrew
 
MineralGray02K

MineralGray02K

Administrator
Staff member
#3
#3
Glad to see you're making some moves Drew, can't wait to turn some wrenches! The Cobra guys will chime in here, but I'm thinking you should definitely put a blower on her, slap on an exhaust and maybe gears and you will be driving a completely different car.
 
SSChris NY.

SSChris NY.

Member Plus
#5
#5
timspony said:
Gears, exhaust & a Vortech!
Click to expand...
Agree with Tim on this. To do an Eaton conversion is very extensive and very costly as well, your best bet is to start with the basic mods First, Exhaust, Gears and a Centrifugal Blower, your ride as it stands stock puts out about 300rwhp, if You do Centrifugal blower it will net U anywhere from 425 to 455rwhp, with very few upgrades to your fuel system or Engine, Why you may ask? your engine has a higher compression ratio than the 03-04 Cobras, 03-04 Cobras have a compression of 8.4 to 1, in turn your ride has an 9.5 to 1, 03-04 have a forge bottom end 99 true 01 don't, there's lot's of information out on this Conversion, I can help U out to the best of my abilities and feel free to pm Me any other questions U may have on this matter
 
CobraAnt

CobraAnt

Member
#6
#6
If you do it right you can run low 12s even high to mid 11s with a Naturaly Aspirated set up, with stock heads and cams and lower end. I've been doing research for a while now. I was in the navy so i was never in the country so all i can do is sit an read an ask questions. To stay NA with stock heads an cams is cheaper then a Kenne Bell. I looked into a kenne bell and the other power adders. Once you get the 430 to the wheels with a vortech or porcharger you will eventualy want more but our engines wont handle it because of the compression ratio. So to up the boost you will have to rebuild the block once you do that you might as well do it all. So you are limited with power. If all you want is the 430 range then go with the power adder. If you have any other questions pm me. But the first mods deff JLT Intake, full ehaust, throttle body and a good tune. Gears will kill the gas milage so if you dont plan on driving it every day then go for it. Just remember its an addiction!!:evil:
 
scotts99snake

scotts99snake

VIP / Donor
#7
#7
I have to say it all depends on how much, if any, track time your car will see. I have a 99 cobra with a procharger. It is great for the track since it pulls hard in your useable power. If you rarely see the track, I would say a positive displacement s/c as it will be the most fun in the street. It makes power where our cars lack. The eaton swap is faily extensive with a ton of tracking down parts, but in the end isn't as expensive as a kb. The eaton is a lot less efficient blower on the other hand. If you don't have the money for a supercharger now, I would recommend intake, exhaust, and gears. If you go JLT, I would say ram air over cold air. I had the cold air which is a pain (removing inner wheel well to change filter), while the ram air does not really net any less gain, and is less expensive. I wouldn't worry about headers but a midpipe and catback would be great. Catted/offroad is your choice. I prefer catted but it comes down to preference. If you don't do a ton of highway driving, I would undoubtedly go with 4.30 rear gear. Definetly no less than 4.10's. They will be the best sotp mod you do. Anything you do (gears, supercharger, etc) will require you to get a handheld tuner. Just ask your local tuner what they use and buy that brand.
One last thing, if you do decide to go supercharged, do NOT get the SVT Focus fuel pump. Either go with the GT pump or better yet, spend the extra on the 03 Cobra tank and twin pumps.
If you have any questions feel free to shoot me a pm. I have been where you are now.
 
scotts99snake

scotts99snake

VIP / Donor
#8
#8
Here is a list of parts and #'s courtesy of 99riocobra on svtp:
here's a list with some part numbers, and then the list i made on my own that's more "generic" but sometimes easier to interpret....

1.) 2R3Z-6312-BAA Crank pulley /Harmonic Balancer
2.) 2R3Z-6C254-BC Supercharger Crank drive pulley
3.) 2R3Z-8678-BA Pulley w/mount Replaces stk alt. Pulley
4.) 2R3Z-8B603-BB Pulley bridge assembly for S.C.
5.) 1L2Z-8678-AB Idler pulley,timing cover LH side
6.) 2R3Z-6D080-BC Timing cover
7.) 2R3Z-6020-AA Timing cover gasket LH side
8.) 2R3Z-6020-BA Timing cover gasket middle
9.) 2R3Z-6020-CA Timing cover gasket RH side
10.) 2R3Z-10A313-AB Upper alternator bracket
11.) 2R3Z-10153-BA Lower alternator bracket
12.) 1U2Z-14S411-TA Electrical connector (alt. to harmness )
13.) 2R3Z-6B209-AA Tensioner on timing cover
14.) 2R3Z-8260-AB Radiator hose
15.) 2R3Z-8A593-AB Radiator hose
16.) 2R3Z-8K576-AA Radiator hose
17.) 2R3Z-8286-AB Water cross over pipe
18.) F8ZZ-6881-AA Cobra oil cooler adapter
Note: Use your stock gasket from your adapter or a leak will occur
with a Cobra gasket!
19.) 2R3Z-6A642-AA Cobra Oil cooler
20. 2R3Z-9002-AA Cobra fuel tank
21.) 2R3Z-9H307-AB Cobra fuel pump
22.) 2R3Z-6F066-AA Eaton supercharger & inlet / T.B.
23.) 2R3Z-9424-BB Lower intake
24.) 2R3Z-6K775-BA Garrett factory intercooler
25.) 2R3Z-9H486-?? Intercooler to S.C. gasket
26.) 2R3Z-9A758-AA Cobra throttle cable
27.) 3U2Z-14S411-JUA IAT sensor connector
28.) 2R3Z-9H308A-?? Intercooler pipe to heat Exchanger
29.) 2R3Z-6K683A-?? “……………………………………..”
30.) 2R3Z-6K683B-?? “…………………………………….”
31.) 2R3Z-6K683C-?? “…………………………………….”
32.) 2R3Z-6K683D-?? “…………………………………….”
33.) 2R3Z-6K683E-?? “…………………………………….”
34.) 2R3Z-6K683F-?? “…………………………………….”
35.) 2R3Z-6K683G-?? “…………………………………….”
36.) 2R3Z-8501-AA Ford / Bosche water pump for intercooler
37.) 2R3Z-9L440-?? Factory heat exchanger
38.) 2R3Z-8A193-?? Heat exchanger mounting bracket
39.) 2R3Z-6C693-?? 2each bracket clamps
40.) 2R3Z-9H308C --?? Lower manifold to intercooler water adapter
41.) 2R3Z-6F089-?? EGR Valve
42.) 2R3Z- -?? EGR Tube to exhaust manifold
43.) 2R3Z- 8N500-?? Water pump intercooler bracket

*** #29-35 are intercooler lines

My List:

1) all intercooler lines and elbows
2) intercooler fluid reservoir
3) heat exchanger and mounting brackets
4) intercooler
5) intercooler pump and mounting bracket
6) intercooler cap(mounts to front of lower intake and has 1 in and 1 out intercooler line)
7) intercooler pump wire pigtail
8) timing cover
9) every single pulley except AC and water pump
10) supercharger pulley bridge that a few idlers mount to
11) both belts
12) lower intake
13) IAC valve(that thing that sits on top of the plenum/elbow)
14) supercharger and plenum
15) alternator and both mounting brackets
16) alternator wire pigtail
17) throttle and cruise cables
18) throttle/cruise cable bracket that mounts on the blower
19) the whole vacuum assembly and the stuff it all plugs into on the driver side of the blower
20) main feed line coming out of PS reservoir(the bigger one going to the pump)
21) return PS line(the other smaller one out of the reservoir) as well as the sections that "T" to right next to the radiator and to the booster
22) pcv valve and hose
23) EGR valve
24) EGR tube
25) oil cooler
26) all of the soft radiator hoses:
a) upper hose going from the crossover tube to the radiator
b) the big long one going from the middle of the crossover directly down and goes into the thermostat
c) lower hose going from lower radiator to t-stat(about 10" long)
d) hose going from oil cooler to t-stat(about 10" long also)
e) smaller diameter hose going from bottom of coolant resevoir to t-stat
----> the last hose (e) may not be needed to swap, but i did anyway
27) coolant crossover tube(hard U-shaped tube going from head to head)
28) fuel rails(i'm not sure if the pressure sensor on the driver side rail is the same, but we swapped that too)
29) boost bypass valve actuator(circular thing with on the rear driver side of the blower)
30) gaskets:
a) intercooler cap(mounts on front of lower intake)
b) plenum to blower(if you get a supercharger with the plenum on already, then you don't need this)
c) throttle body to plenum
d) IAC valve to plenum
e) EGR valve to back of blower
f) timing cover(3 parts to this gasket, and they are all sold separately)
g) supercharger to lower intake(this one can be reused if you can het the original from the guy with the 03)
h) you can also use your original lower intake to head gaskets. you just have to cut off two small tabs(one on each one). you'll see when you try to line them up with the 03/04 lower intake. no big deal at all, takes 3 seconds.
-----> you'll also need to do something for fuel. stock 03/04 injectors are fine. you can run a BAP on your stock pump, or swap to the 03/04 tank and dual pump setup too...
 
Double"O"

Double"O"

Well-Known Member
#15
#15
The Eaton Swap can and has been done for 3K and slightly lower, the problem is getting the parts in order...good lord it's a ton as you can see in the list above

Stock your car is putting 275ish RWHP/TQ (although the post fix 99s seem to put closer to 280ish down stock)

With a Catback, Midpipe and CAI you should be at 300ish RWHP/TQ...add a tune and your'r lookin 305-308 (norm)

For example my car with an drop in filter, FR500 Catback and Prochamber midpipe put down 300/303

Now for blowers...oh how i love boost lol

Centri vs Twinscrew...this whole debate is just stupid!

take a centri and twinscrew on teh same motor with the same boost and the HP numbers will be shockingly close at most rpms and they will inface run similar times at the track believe it or not

MMFF did a comparo between a KB S197 and a ProCharged S197 and they ran within a 10th or so of eachother each and every time...well until the KB car tossed a belt lol

the stock CR in the 99/01s is 9.85:1 it needs premium in stock form so the TUNE IS THE KEY!!!!!!!!!!!!!! just like with any boosted car but especially in high CR apps like our the tune MUST be perfect

My recommended startup mods for 99/01s are as follows

1. Short Throw Shifter (MGW, Steeda, PRO 5.0)
2. Subframes (MM or Steeda)
3. Gears (4.10 min N/A, i preffer 4.30s for N/a 4Vs) 3.73s or 3.90s Twinscrew) (4.10s Centri)
4. Suck and Blow! (CAI, Catback, and Midpipe)
5. custom tune (not a canned tune)

Then find your FI of choice and tear some stuff up!!!

Or one more thing once you go FI 7psi won't last long, soon it will 8, 9, 10 aaaahhhh it never stops boost is addictive!!!!!!

Also start your blown motor fund NOW, our motors were never meant to see boost and sooner or later it's gonna get angry lol...i've been lucky 5 years and 30K miles at 9.5psi on my 01, and it sees boost every time i drive it!
 
SonicBoom

SonicBoom

Well-Known Member
#16
#16
kenne belle! . .dont listen to me tho . .listen to tim ahha . . but yes def exhaust (do at least midpipe with catback .. and if your feeling spendacious (my own word) then get headers also) blow it . .then work on internals!
 
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