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09-12-2017, 09:34 PM | #23 | ||
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09-12-2017, 09:56 PM | #24 |
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Don't forget the drain plug! (p/n 33117525064)
Although I guess in a pinch you could re-use the original. Jim is a solid guy to deal with. Must've missed that post of yours; I was curious about the specifics. Thanks.
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09-12-2017, 10:04 PM | #25 | |
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FWIW, I bought Dimple magnetic drain plug(s) for my diff, transmission, and engine.
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09-13-2017, 09:44 AM | #27 |
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09-13-2017, 03:08 PM | #28 | |
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I think I'm about to pull the trigger, would hate to see it go NLA. |
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09-20-2017, 06:42 AM | #29 |
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I'm curious about the 3.73 diff swap, as well. I'm wondering if the speedometer reads high as a result of changing ratios? Next to CDV delete, this is probably number one on the "bang for the buck" mods list. it would be a great excuse to swap out the RSF bushings, too.
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09-20-2017, 08:33 AM | #30 | |
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09-20-2017, 11:19 PM | #31 | |
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Also it would be a good opportunity - I already have Whiteline RSFB inserts so I didn't need to do anything. I don't drive this car hard enough to justify anything more. Sidenote: I have both a muffler delete and the shorter diff, so when I'm on the highway the exhaust is a little bit louder at any given speed - keeping speed with rural I-4 traffic ( ) can introduce a small bit of drone.
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09-26-2017, 08:05 AM | #32 |
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I finally had a chance to get mine in........ I was very frustrated because the front left bolt did not want to spin out easily. the e-brake cable is in the way of the socket so a ratched cresent wrench was the best option. make sure the drive shaft is off so it doesn't take 10x as many movements. Then the rear one decided to hang up and take forever. Even with the diff supported it did not want to come out. I recommend taking the rear one out first before the front two. make sure to also break free all three before removing them. Those two wasted an extra 45 minutes of time. the 16 torx head, 12 half shaft and 4 drive shaft were easy. I only had to get up to the car twice to release the e-brake and get it out of gear.
Next issue was the finned diff cover did not want to fit. I had pre-installed and filled the diff to make life easier. The cover was against the oem section of my exhaust and I had to trim out a fin and a half to get the diff cover off the exhaust. Results. 3.73 is in. It winds up noticeably faster. I hope that the shorter gearing will work for the tracks, Grattan, Waterford and Gingerman(when I get time). Dont know when the next time I get to the Dragon with this car but it will be fun but still would want the LSD there= more $. I was pleased because the the engine got into the power band faster and was just as happy to rev. At the tracks I'm at 130 it's about maxed out as top end. Now I will be able to use 5th on a regular basis.
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128i Msport, 1M3=1M clone +S65= N55 swapped former 128 slicktop, former 128 slicktop with N54T swap
Last edited by gixracer; 09-26-2017 at 08:43 AM.. |
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09-26-2017, 09:29 AM | #33 | ||
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09-26-2017, 10:11 AM | #34 |
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I had seen that, was under the impression that it was for the 135’s oh well. when looking at BimmerBobs pic there were no fins missing. I’ll do the dremel thing and get it done so it look ascetically pleasing.
Last edited by gixracer; 09-26-2017 at 03:27 PM.. |
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09-26-2017, 09:09 PM | #35 |
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Clearance doesn't seem to be an issue with the MagnaFlow cat-back - plain dumb luck on my part:
I had wondered if a stock 128i exhaust would clear, since I knew the cover required trimming on the 135i. Bummer that you guys found out the hard way that it does not. But, at least its still workable with a little bit of elbow grease, rather than a total no-go. Anyway, lookin' good, guys! I always get a kick out of seeing those fins poking out the backside. It's just such a nice little detail and finishing touch.
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09-26-2017, 09:49 PM | #36 | |
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09-27-2017, 08:07 AM | #37 | |
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Quick notes from driving into work to with the car, first is short and definitely find myself in 5 more on two lane road, lots more shifting. Observation on the math from the tach /speedo in 6th 500RPM per 10mph +/- nets about 3500 at 80. I have yet to take it on the highway. It will be at the track on Saturday and it will be in storage for the winter on Sunday. The fall fun driving will be in the wife's X1 35i Msport, mmmm love N55 turbo.
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09-27-2017, 08:21 AM | #38 |
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I did the ///M diff bushings at the same time. I din't install the diff myself, so I wasn't able to compare against the stock bushings, and I also had a rear sway bar installed at the same time - but overall, the rear end feels very buttoned down and predictable now.
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10-04-2017, 11:07 AM | #39 |
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track day is complete
damn that thing revs up fast and the diff needs a LSD so badly On the highway if you turn up the music its not so bad. my milage at 80 on cruise control was 25mpg. I think if I am going to keep the car as a street car it will be changed to a 3.64 with LSD. The difference from 3.23 will be noticeable but not to the point where it will be super tight with the 3.73. There were a few situations where I could not downshift because the spread was so minimal, but that is dependent on what track your at. The main place was a 110 degree left that transitioned into a uphill right. I was too high in the rev range to make it effective because the inside wheel would spin and the amount of time in the gear was to short to justify the shift vs trying carry the corner speed. Dedicated track car = great mod Daily driver= too much time shifting split duty= not bad unless on the highway(limited time)
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10-05-2017, 02:31 PM | #40 | |
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I will say that before the mod, it was very common for me to drive around in 3rd & 4th most of the time, and almost never in 6th. Basically only used 6th for long-distance, sedate interstate driving. So I really didn't feel like I was giving up too much at the top end. Now I'm in 5th a lot more often. 6th is still rarely used, but I live on an island now with nothing larger than a two-lane road and mas speed-limits of 50-55mph (often lower). I'd say I rarely exceed 60-65mph, unless I drive over to the mainland and get on the interstate, which isn't very often in this car. But, like I said, totally subjective. Depends on personal tastes, driving styles, etc. It's good that you tried the 3.73 with an open diff first, rather than paying big bucks for the LSD and regretting it.
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11-15-2017, 11:42 AM | #41 |
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OP updated with video
I've been dailying this for a bit now and I still love it. Yeah it's a lot of shifting but you get used to it, and with skipping gears occasionally. Highway isn't bad, it's nice to have some more power but the RPMs do climb quickly.
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11-15-2017, 03:13 PM | #42 | |
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Hold the go-pedal down longer! For Reference: 3.64 Diff Chart
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11-15-2017, 10:03 PM | #43 | |
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So long as the engine is warm you can rev, rev, rev an N52 all day. I almost never use 6th, even with a 3.73. Hell, 5th gear sees rare use.
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02-02-2018, 06:47 PM | #44 |
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[IMG][/IMG] don't hear the OP . He's bad influence... 3.73 arrived!!!!
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