97 Saturn Sc2

[spacemanspif]

The resonator cured the problem between 1 and 2k RPM? I never had any problem with mine on the 95...oh wait I deleted that on day 1 along with the wheel covers lol. While the car is sitting take some time to clean the throttlebody and EGR do some other basic maintence things that will help get better MPG when it comes time to start driving.

[mazdamx640]

I finally got in my second tank of fuel and got 37.75 allot better than my first tank but short of my 45 mpg goal. I should start doing even better in October when I can take out my snapshot device and plug my ultra gauge. My next project is probably going to be replacing my harmonic balancer because it has a bit of wobble to it I'm just not sure if I want a direct replacement or a obx under drive pulley. I want to find out if these engines can handle no balancer. I'm also going to get a shorter belt to delete the a/c and p/s while I'm at it

[mazdamx640]

Originally Posted by spacemanspif

The resonator cured the problem between 1 and 2k RPM? I never had any problem with mine on the 95...oh wait I deleted that on day 1 along with the wheel covers lol. While the car is sitting take some time to clean the throttlebody and EGR do some other basic maintence things that will help get better MPG when it comes time to start driving.

I fixed the not running right 1-2k by removing the resistor and replacing it with the original ait sensor.I'm always on top of maintenance but will have to get around to cleaning the throttle body and egr I'll pry order the gaskets first tho

[mazdamx640]

The Saturn is in need of a alternator rebuild and I would like to improve fuel economy while I'm at it I'm going to upgrade the alternator by replacing the stator I have 3 options 140 180 or 220 amps the stock only being 96. Is there anything I can do to for better mpgs while I'm at it? Also I'm going to delete the ac and ps

[austingsx]

I have a 1-wire converted alternator off my 97 SC2 if you are interested. It is date stamped 5-10 from the conversion and full rebuild. It is in excellent shape and has about 1 year of normal street use on it, boxed and sitting in my garage since.

Also have an SDS standalone engine management system up for grabs.

[mazdamx640]

Thanks but I think a 1 wire would be a step in the wrong direction because I might want to add a switch to disable it at times. I'm wondering if it would be a good idea to get a cheap dc to dc converter for the coils to run on 16 volts and increase the gap on the plugs?

[BabyDiesel]

I'd go with the 220, or the one with the best warranty. Then have a disable switch. The higher amp alternator should recharge quicker than the measly stock 96 amp. I think Balto has mentioned that a bigger alternator is better for mpgs due to it having to "work" less to charge.

I would see how much of a gap you can go before there is misfires. I have 0.070" gap on my ZX2, stock is 0.048". I do know that with a Coil-On-Plug conversionm I could run 0.15" if I wanted. You may be surprised what the stock coil is capable of.

Also, I think Daox tried the Dc-to-DC converter thingy recently, and it failed.

[Daox]

I wired it incorrectly. It can be done if you know what you're doing.

[mazdamx640]

Finally getting around to my alternator I got it pulled today and found out it's a cs121d not a cs130. I ordered brushes rectifier and a adjustable voltage regulator but it's for a cs130 so I got a standard regulator in case it doesn't fit. For bearing I ordered micro blue ceramic bearings. While I had the belt off I spun the water pump by hand and it made a sound best described as a whales mating call so that's getting replaced too.

[mazdamx640]

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