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  ProbeTalk.com Forums > Performance Section > 2nd Gen (93-97) I4 2.0L Performance > 2nd Gen (93-97) I4 2.0L Performance Archive

2nd Gen (93-97) I4 2.0L Performance Archive Quality Archived Posts and FAQs

 
 
March 27th, 2003, 03:57 PM   #1
DeathKnight
Donating Member
 
 
: Nov 2000
: NNJ
: 36
: 2,830
2.0 Modifications (Updated with dyno data)

Fellow Enthusiasts,


Please take a few moments to read this post. Within this post you will find current information on available modifications for the 1993-1997 Ford Probe, Mazda MX6, and Mazda 626.

  • Intake System
    Intake system tend to come and go for the 2.0L Probe. The following link should give you good start on finding out what is currently available or even how to make your own custom intake.
    Intake Systems Thread
  • Japanese-Spec 2.0L Intake Camshaft
    This intake camshaft is found in the 2.0L FS-ZE engine which is available in the Japanese Mazda 626/MX-6. According the importer, Corksport, the intake cam is believed to provide about 6 more degrees of duration. Dyno results have indicated that this cam effectively pushes the power band of American 2.0L up about 300-400 rpm, as well as yielding around 10 whp, but with a sacrifice in torque. This torque loss can mostly be attributed to lack of proper fueling and ignition timing of the stock ECU. There are dyno plots below that compare relatively stock (red and green data) to the J-cam 2.0L (blue). This cam retails for about $175. This cam is available at http://www.corksport.com Installation is more tedious than your basic bolt-on, so if you are not comfortable working on cars its best to take your car to a certified mechanic.
  • Custom Stock Reground Camshafts from Crower Cams
    Crower cams can regrind your stock cams with specs of 10-15 degrees more lit and duration. Crower has specs on file from previous orders. If you inform them of your motor plans they can make a grind accordingly. Custom Crower regrinds are 165 for both camshafts, but that does not include hardfacing. HP yield could be as much as 15HP. Installation is same as the FSZE intake camshaft....but instead of only the intake cam its both intake and exhuast cams. www.crower.com

  • Unorthodox Racing Ultra Street Pulley
    The Unorthodox Racing Pulley replaces the overweight cast iron crankshaft pulley on the 1993-1995 2.0L Probes. The UR pulley is constructed of billet aluminum, weighing in at just about 1 lb, so there is a significant weight reduction from the approximately 10 lb stock pulley. The UR pulley is also smaller in diameter, which drives means the assessories are driven somewhat slower to reduce power losses from the assessories. The pulley is available in a anodized red or blue finish or a polished aluminum finish. The pulley generally sells for about $175. Currently, there are not dyno results on pulley to estimate torque and power gains. Installation should take about an hour with the proper tools. The only speciality tool is the crankshaft bolt removing tool. This tool allows you to hold the crankshaft still while you break the center bolt loose. I have had good results using a impact wrench. As for the belts, Unorthodox Racing recommended Gates belts, If you decide to use Gates belts you will need to buy a K050450 and a K040355. Gates belts are high end belts so expect to pay around $20-$30. If you deside to use a different brand of belt, you can probably use the Gates part numbers as references, as the first three digits indicate the number of "grooves" on the belt and the last three digits indicate the length of the belt. For example the K040355 belt has 4 grooves and is 35.5 inches long.

__________________
Eric
96 Miata M
We're all still learning...




 
March 27th, 2003, 03:58 PM   #2
DeathKnight
Donating Member
 
 
: Nov 2000
: NNJ
: 36
: 2,830
  • Bosal/Brospeed Exhaust Header
    The Bosal exhaust headers are currently the only option for 2.0L owners. The header is constructed of a 14 gauge, mandrel bent, mild steel. They are a one-piece design that collect in a 4:2:1 style. The primaries have a diameter of 38mm. The four primaries pair off into two 44mm collectors. The 44mm collectors join via a 54mm collector pipe. These headers are finished with a 1200 degree ceramic coating by JetHot which has a lifetime warranty against chipping, peeling, etc, but not valid for nitrous oxide users. The headers include one port for a oxygen sensor and one male port for the EGR (Exhaust Gas Recirculation) plumbing. There should be no installation problems for 1993-1995 Probe/MX-6 owners. The 1996-1997 Probes have an additional downstream oxygen (O2) sensor just after the pre-catalytic converter. To avoid check engine lights it will be necessary to have an additional O2 fitting welded downstream of the main catalytic converter and relocate the downstream O2 sensor to its new locations. O2 fittings can be purchased from http://www.summitracing.com The headers do not have a heat shield and the stock one cannot be used. There are no gasket provided, but the stock one are generally sufficient. The flex pipe is also replaced with a knuckle joint style pipe which ties back into the catalytic converter. The Bosal headers come with a one year warranty. The part number is #111252. The Bosal headers retail for $399.99 but can be had for as cheap as $300. The dyno data below was provide by Bosal engineering department.
    Bosal Dyno Data
  • Bosal/Brospeed Cat-Back Exhaust System
    The Bosal exhaust is the only exhaust system developed specifically for the 2.0L Probe. It is a full stainless steel mandrel bent system. All connections are flanged with gaskets, not the typical "slip fit and crimp". The 2.0L exhaust tubing has a 2-1/8" outer diameter. It has a straight through muffler design, or in other words the muffler is not chambered like conventional mufflers or like the factory muffler. The exhaust tip is a single 4" diameter chrome exhaust tip. Per dyno results sent to me via Bosal the exhaust alone yields between 1-3whp over the stock exhaust. Aside from performance, the Bosal exhaust system is very well constructed, those who have purchased Bosal exhaust systems for the Probe have claimed that the craftmanship is superb and that their products are a work of art. This work of art comes with a pretty hefty price tag though. The retail price for the 2.0L exhaust system is $695.95, but I have seen it sell for as little as $465 during a bulk buys.
    Bosal Dyno Data
  • Borla Cat-Back Exhaust System
    This exhaust system is designed for the 2.5L V6 Probe, but will bolt up to the 2.0L with an extension pipe. This seems to be the exhaust of choice for most Probe owners as it has a relatively tame sound, and is fairly inexpensive.
  • Greddy Cat-Back Exhaust System
    This exhaust system is designed for the 2.5L V6 Probe, but will bolt up to the 2.0L with an extension pipe. The system is a full mandrel bent, stainless steel system. The muffler is a straight through design which has been highly polished to a nice luster. Exhaust gases exit a 5" polished tip. This exhaust has the largest diameter pipe of available exhausts for the Probe. This is a good choice for N2O users. Sound on the 2.0L has been claimed to be rather ricey due to the massive pipe diameter for a 2.0L and the straight-thru muffler.
  • HKS Cat-Back Exhaust System
    This exhaust system is designed for the 2.5L V6 Probe, but will bolt up to the 2.0L with an extension pipe. This is a full mandrel bent exhaust system.
  • Pacesetter Cat-Back Exhaust System
    This exhaust system is designed for the 2.0L Probe. This is a full mandrel bent exhaust system. This exhaust is not of the greatest quality, but for many the price is right. Of all the available exhaust systems for the Probe, the Pacesetter is going to be the cheapest.
  • ARP Motor Hardware
    Main Bearing Studs
    Kit Part No. 203-5403
    Design for Toyota 4AGE motor. Kit includes 10 studs, washers and nuts. Studs are 3.4" long with inch thread on either end. Block thread is 10mm - 1.25 pitch.
    $94.48

    Head Studs
    5.100” 10mm 1.5 Pitch Stud
    Stud No. - AM5.10L
    $5.16

    12pt Nut
    Nut No. - 300-8344
    $5.43

    0.120” Washer
    Washer No. - 200-8519
    $1.37

    With a quantity of 10 of each that comes to $119.60.
__________________
Eric
96 Miata M
We're all still learning...




 
October 6th, 2004, 06:36 AM   #3
BryanPendleton
PT Know it All
 
 
: Feb 2000
: Houston, TX, USA
: 46
: 4,381
  • Walbro Fuel Pumps
    Walbro replacement fuel pumps are a direct replacement for the OE fuel pump that is located inside the fuel tank. The following chart includes flow data for the OE and well as Walbro's line-up of replacement pumps.
    Fuel Pump Flow Data
__________________
Bryan Pendleton |

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