A hard to answer question and a not so hard...
11-01-2005, 10:57 PM
#1
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A hard to answer question and a not so hard...
have a 1991 GT Hatchback. Here are my mods....
BBK Cold Air Induction, 75mm Mass Air Flow Sensor, BBK Shorty Headers, BBK Off Road X-Pipe, Flowmaster 2 Chamber Mufflers, BBK 190 LPH Fuel Pump, FRPP 3.73 Gears, Wolverine/Blue Racer 1087 cam (289/299 duration with a 510/534 lift), 70mm Throttle Body, Steeda Upper Control Arms, Custom Digital Dash, and Granatelli Weight Jacker Lower Control Arms.
I am running WAYYYY rich. I put my car on the emissions machine at school and my HC's are way up in the 2500 range. I still have all of the normal emission equipment on my car (minus the cats), I dont think the cats would bring down the HC level bc i believe those are only for NOx. The only thing I can think of maybe that my cam is to big for my stock heads and intake. Im not real worried about getting a sticker in El Paso, but this next september I am moving back to Dallas, and from what I understand, they use the dyno now for the emissions test. I have thought about getting an E cam to replace the cam I have but I LOVE the way it sounds. Here is a link to a discussion about this cam in a 1994 lightening.
http://64.22.203.126/forum/showthrea...&postid=654285
Any advice to lean this car out would greatly help me out more than you will know. Thank You.[sm=dontgetit.gif]
Now for the easier question....
I currently have 3.73 gears, and I hardly noticed a difference to the stock 3.08 ratio. I have a gear whine in 4th gear at 35 mph, and I am assuming that it is because I let a "Retired Ford Mechanic" install them in his backyard, and also the gears were "slightly used." Since I want to replace the gears with a new set, how much of a difference will a set of 4.10 gears make compared to the 3.73's? Thanks :-)
BBK Cold Air Induction, 75mm Mass Air Flow Sensor, BBK Shorty Headers, BBK Off Road X-Pipe, Flowmaster 2 Chamber Mufflers, BBK 190 LPH Fuel Pump, FRPP 3.73 Gears, Wolverine/Blue Racer 1087 cam (289/299 duration with a 510/534 lift), 70mm Throttle Body, Steeda Upper Control Arms, Custom Digital Dash, and Granatelli Weight Jacker Lower Control Arms.
I am running WAYYYY rich. I put my car on the emissions machine at school and my HC's are way up in the 2500 range. I still have all of the normal emission equipment on my car (minus the cats), I dont think the cats would bring down the HC level bc i believe those are only for NOx. The only thing I can think of maybe that my cam is to big for my stock heads and intake. Im not real worried about getting a sticker in El Paso, but this next september I am moving back to Dallas, and from what I understand, they use the dyno now for the emissions test. I have thought about getting an E cam to replace the cam I have but I LOVE the way it sounds. Here is a link to a discussion about this cam in a 1994 lightening.
http://64.22.203.126/forum/showthrea...&postid=654285
Any advice to lean this car out would greatly help me out more than you will know. Thank You.[sm=dontgetit.gif]
Now for the easier question....
I currently have 3.73 gears, and I hardly noticed a difference to the stock 3.08 ratio. I have a gear whine in 4th gear at 35 mph, and I am assuming that it is because I let a "Retired Ford Mechanic" install them in his backyard, and also the gears were "slightly used." Since I want to replace the gears with a new set, how much of a difference will a set of 4.10 gears make compared to the 3.73's? Thanks :-)
11-02-2005, 01:16 AM
#2
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Join Date: Dec 2003
Location: Rochester, NY
Posts: 2,392
RE: A hard to answer question and a not so hard...
the cam is definately on the agressive side, especially with stock heads and intake. that size cam is usually more high-rpm range, which stock heads and intake will not support. so either look into getting new heads and intake, or drop the cam down a little.
or, if you still have the stock midpipe, just bolt that on there for the emissions test and swap it out later
edit: it isnt as big as i originally though. looking at the other specs on the website, i dont think the cam is necesarily too big. how is ur igntition setup?
or, if you still have the stock midpipe, just bolt that on there for the emissions test and swap it out later
edit: it isnt as big as i originally though. looking at the other specs on the website, i dont think the cam is necesarily too big. how is ur igntition setup?
11-02-2005, 02:16 AM
#3
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RE: A hard to answer question and a not so hard...
ORIGINAL: mkspeed26
the cam is definately on the agressive side, especially with stock heads and intake. that size cam is usually more high-rpm range, which stock heads and intake will not support. so either look into getting new heads and intake, or drop the cam down a little.
or, if you still have the stock midpipe, just bolt that on there for the emissions test and swap it out later
edit: it isnt as big as i originally though. looking at the other specs on the website, i dont think the cam is necesarily too big. how is ur igntition setup?
the cam is definately on the agressive side, especially with stock heads and intake. that size cam is usually more high-rpm range, which stock heads and intake will not support. so either look into getting new heads and intake, or drop the cam down a little.
or, if you still have the stock midpipe, just bolt that on there for the emissions test and swap it out later
edit: it isnt as big as i originally though. looking at the other specs on the website, i dont think the cam is necesarily too big. how is ur igntition setup?
The cats are just for NOx if i did my research correct, I still have the stock h pipe and will use that for my emissions testing. As for my ignition I just bought a MSD 6AL but I havent installed it just yet. Do you think this will help burn the fuel completely?
11-02-2005, 10:58 AM
#4
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Join Date: Dec 2003
Location: Rochester, NY
Posts: 2,392
RE: A hard to answer question and a not so hard...
http://auto.howstuffworks.com/catalytic-converter2.htm VOCs stands for Volotile Organic Compounds, which is the same as HCs (look at the previous page of the article). catalytic converters do reduce HCs
11-03-2005, 01:04 AM
#5
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RE: A hard to answer question and a not so hard...
ORIGINAL: mkspeed26
http://auto.howstuffworks.com/catalytic-converter2.htm VOCs stands for Volotile Organic Compounds, which is the same as HCs (look at the previous page of the article). catalytic converters do reduce HCs
http://auto.howstuffworks.com/catalytic-converter2.htm VOCs stands for Volotile Organic Compounds, which is the same as HCs (look at the previous page of the article). catalytic converters do reduce HCs
Do you know of a good hi flo three way catalytic converter, I could purchase for a decent price?
11-03-2005, 02:15 AM
#6
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Join Date: Dec 2003
Location: Rochester, NY
Posts: 2,392
RE: A hard to answer question and a not so hard...
go to summitracing.com, then type in part # MPE-93338 for the 2.5" version or MPE-93337 for the 2.25" version. i dont know how good they are, but it is pretty much all i could find
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