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| Northstar 6 Speed (Page 10/20) |
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buds
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JAN 19, 08:45 PM
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Zac88GT
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JAN 21, 11:46 PM
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After I got the new bigger fuel injectors opening I put them back into the rail and decided to test them with fuel pressure just to make sure they all flowed relatively the same. The ones that were sticky now open but barely flow at all. i'll have to let them sit in cleaner for a long time or just buy new ones or something. So back in the old ones went again. Heres a little clip of the sound. It really doesn't do it justice for volume or fullness of sound though.
http://youtube.com/watch?v=yHkJBZKSvNk
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Steven Snyder
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JAN 22, 02:35 AM
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Well that flywheel adapter mass certainly slow your throttle response down much ;-) Sounds awesome! [This message has been edited by Steven Snyder (edited 01-22-2008).]
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Zac88GT
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JAN 22, 10:26 AM
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| quote | Originally posted by Steven Snyder:
Well that flywheel adapter mass certainly slow your throttle response down much ;-) Sounds awesome!
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Haha, I was thinking the same thing. In that video i was rolling the throttle a lot more than the other one too. I think it's got about the same throttle response if not better than before. The mods are: -ported and polished cylinder heads -backcut intake valves -high compression steel shim head gaskets -CHRF valve springs and retainers -12.5 lb aluminum flywheel -long tube headers 1.75" primarys ~36" length +- 4"with a spintech muffler -cold air intake with cone filter
I'm hopeing for between 325-350whp now. I can't wait to get it out on the road and the dyno, but i'll probably have to wait until the spring.
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Zac88GT
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JAN 23, 03:11 AM
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Bad news about my axles today. I tried a little test drive up my driveway today and the press fit sleeve axle method I was trying wouldn't hold. They did hold some decent torque but only about 25% in first gear. I still think this is a viable method if done right. I think it didn't work for me because the machined surfaces were not all that smooth and true. If you had a .005" press fit with at least .375 wall sleeve and very nicely machined surfaces I'm pretty confident that it would be able to transmit the torque. So today I took out the pressed axles and put in the solid one piece units. I shouldn't have any problems with these but i welded up the pressed ones just as backups or to use as mockups for future axles if i ever need them.
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Nashco
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JAN 29, 07:53 PM
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Bump to add this to the favorites. Did you get a chance to test it yet since changing the axles?
Bryce
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Zac88GT
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JAN 30, 01:31 AM
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I've blasted up the driveway a few times with the solid one piece axles but haven't taken it out on the road. I tried fiddling around with different road speed constant and instrument pannel pulse divisor values within the ecm but it didn't look promising. Everytime i tried setting the RSC to a value over 10,000 ppmi the ecm wouldn't regester a speed whatsoever. So i ordered a dakota digital signal converter but i'm still waiting on it. I paid for USPS express to get it in 3-5 buisness days and it's been 7 buisness days so far with no sign of it (i'm really pissed off).
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Zac88GT
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FEB 12, 12:57 AM
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I got the dakota digital converter today. If anybody else needs one of these things I would reccomend buying from dakota digital directly. DO NOT BUY FROM THE PHEONIX TUNING E-BAY STORE. They're a major pain in the ass to deal with. I paid $35 for express shipping so I could have it at my door in 3-5 buisness days. Well it only actually cost them $21 for the shipping so they overcharged by $14 and it took 15 BUISNESS days to get here. They displayed no innitiative what so ever in customer satasfaction. They said the delayed shipping wasn't their problem and if it didn't show up I was responsable for filing the insurance claim; they didn't even know that they're the ones that have to file the claim with USPS. I'm so pissed off with them, but enough with my rant. I got the signal converter in and working today. One thing to note is that the instructions say that output 4 is 4000ppm od and output 3 is 8000ppm ac. Output 4 didn't display anything on my computer or speedometer so i switched it to the ac signal on output 3 and then it worked fine. As output 3 is 8000ppm I was expecting the speedometer to read double what it should be but for some reason it actually reads correct. Kind of strange but i'm not complaining. I only have 2 hours of class this thursday so i'm thinking i might put a day permit on it .
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Zac88GT
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FEB 14, 04:06 PM
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Well so far so good. The engine seems to run good and the trans is great. It burns a little oil on decceleration but i think thats mainly due to the pcv system and the rings not being fully seated yet. The 6 speed shifts great and the solid clutch with the heavier flywheel is much nicer to drive with than before. A couple of little quirks have come up but it's not a big deal. The dakota digital signal converter seems quite sensitive to electronic inference. It displays fine when the car is in motion but when the car is stopped the needle wiggles around a little bit, and i've already set it to the non-sensitive setting. The ecm flashes a lean exhaust gas code every now and then but the wideband afr says the engine is definatly not lean. It says the afr is typically around 11-12 when the light comes on, which is definatly not lean, and it only happens when cruising or idleing for a while. Took it to the truck scales to get a rough estimate of weight. With me in it, a half tank of fuel, and some other stuff it weighed in at 3050lbs, so without me and my junk the car weighs 2850 with a half tank. I also did a quick G-tech test just to make sure the engine is making more power than before. I used the same settings as i did before the rebuild. Before the rebuild i dynoed it at 300.5whp and the g-tech showed 220whp @ 5800 (some of the g-tech contstants need adjusting). Now the G-tech shows 240whp @ 6200 so i figure i'll probably pick up an additional 25whp when i go to the dyno.
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Erik
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FEB 14, 04:50 PM
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So how does it feel when accelerating? Do you feel conifdant that you could take on a 350z, C6 or some other newe sports car ??
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