I Have a Problem
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Update time!
I was driving the car around for a day or two after tuning, tearing up the streets and such. Went to a guys house who does E36 racecars and was working on s54 itb adapters for m5x/s5x engines which I wanted to pick his brain about for reasons. Right before I got to his house the temp gauge started climbing above half, figured it was just air so wasn't worried. Before I left his house I opened the expansion tank and worked the hoses a bit. Started my 30 min drive home and made it about 10 before it started overheating. I parked in a gas station and tried for 40 or so minutes to burp the cooling system and add coolant but it was no success. Luckily I was about 5 miles from a friends house who just so happened to not be working that night. I started driving to his place and as I got off the highway I nearly stalled it changing gears as the clutch engagement point was suddenly on the floor... I pumped the pedal once or twice to find out something in the clutch blew out and I could barely get anything.
I continued driving my overheating e30 without using the clutch and trying to time traffic lights correctly. I made it into his apartment complex and parked it, got a ride home, and rented a uhaul trailer (again) to pick the car up.Slave cylinder hydraulic seal blew out, so brake fluid was dumping out of the bellhousing. I bought a new master and slave cyl to accompany the new clutch and not have to worry about it for many years again.
I dropped the trans with the engine in the car which I haven't done before. Not as bad as everyone says it is!
I swapped to a E36 flywheel with 240mm clutch vs the E30 flywheel that was in it at 228mm. The old six puck clutch was indeed required to hold the NA power that this engine is producing which is amusing, but sucks to drive. Swapped to a full face organic disk.
Old clutch/PP/Flywheel weight: 31.4 Lbs.
New clutch/PP/Flywheel weight: 28.4 Lbs.
Three pounds lighter for a better clutch? I'm game! Photo of old clutch so I can remember the abuse it caused.
After using the wrong throw-out bearing the first time which required me to take the trans back out, I was finally at the point where everything was back together and ready for coolant. I poured coolant in and started hearing a trickle, and found a pinhole in my radiator that had 3 hours or so of runtime on it. I must've caught it on something while taking it out. My attempt to solder it was unsuccessful so I ordered another one, thankfully the CSF OE replacement is cheap!
So everything is back together now, and RockAuto sent me the correct crank sensor after they sent me the wrong one (the must've had a mislabeled box or something odd) and it seems the crank sensor was the cause of my breakup and stumbling issues, as the car now pulls smoothly to 7?00 RPM. I would like to get back on the dyno to make sure that top rev range is tuned and to see where the power starts to taper.
The new clutch is so damn nice to drive with, frankly it should've been the first thing I did to the car when I got it. The ability to slip the clutch and not have the car lurching is lovely, and as resulted in me driving this thing a lot more than it ever has been since I've known it.It does still have the issue of losing traction in 3rd gear on moist pavement at 65mph though. I need to work on that one yet!
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It does still have the issue of losing traction in 3rd gear on moist pavement at 65mph though. I need to work on that one yet!
I think you should post a video of this. You know, for scientific purposes.
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I think you should post a video of this. You know, for scientific purposes.
Ahhh man an excuse to go beat on the car... I hate those!
Note my overzealous let-off that had me pointing toward another car in oncoming traffic, and the other side being a ditch lol
I hope @B C appreciates the audio, the timing was unintentional.The highway was actually dry enough to let 3rd gear stretch its legs, I always debate going back to a 3.73 in this car, but the 3.25 feels like it takes great advantage of the torque on hand.
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S52 to the moon.
Where it should be 🤩
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Started making an airbox, ended up going down a rabbit hole, will update more later once parts arrive.
I believe I'm going for the highest power NA S52 -
Started making an airbox, ended up going down a rabbit hole, will update more later once parts arrive.
I believe I'm going for the highest power NA S52I like this, interested to see!
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Alright I'm going to start thinking out loud here.
So what I was looking at while working on an airbox is the tight radius elbow that leads into the throttle body on my car. The bimmerworld elbow is used to adapt to the 3.5" MAF but seems to have a tighter radius than stock.
Bends are bad for airflow, and I currently have a tight radius 90 before the throttle body, then a 90 after the filter. Total of 180° of bends.
The E36 chassis needs this bend due to the strut tower location and them being close together, but the strut towers are further back and apart in an E30, and the throttle body is almost entirely forward of it. Random google pic instead of going to my car.
Step 1: New throttle body. I recently stumbled upon someone who put an M60 throttle body (80mm) on an S52. Turns out many years ago Treehouse racing actually made a kit to do this, but I have never seen this or heard about it, and it looks like not many were ever made. The throttle body uses the same TPS, but everything else is different. I picked up one on ebay for $60 shipped. This is the same engine that my MAF is from.
I will be making an adapter that will allow me to bolt this up to my engine, and I will be opening up the hole in the manifold to capitalize on the swap. I will need to make a bracket for the throttle cable as well.
Step 2: Remove 90° bend at throttle body. If I move my coolant expansion tank to the passenger side of the car (plenty of space) I can get away with running (1) 45° elbow at the throttle body, and keep the rest straight with maybe a small bend to accommodate the filter. Taking 135° of bends out of my intake tubing should help, especially with eliminating the tight radius bend before the throttle body.
What I'd like to do is swap this stuff while it's on the dyno and see actual results.
The biggest downside is going to be drivability; currently I barely have to breathe on the throttle pedal to cruise, and this swap will amplify that issue. I will make a different throttle arm if I have enough pedal travel to do so.I don't think this swap ever caught on because it is likely very pointless on a relatively stock engine, but we're far from that in this thread!
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Throttle body updates? Nah
I determined I want to do some data collection before that regarding intake vacuum pre/post TBWhat I did do was replace the boat 3 spoke steering wheel with a smaller unit. Please ignore the lack of kick panel near the pedals, and the speaker grille. Gotta love early models for not having actual kick panels there.
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Throttle body updates? Nah
I determined I want to do some data collection before that regarding intake vacuum pre/post TBWhat I did do was replace the boat 3 spoke steering wheel with a smaller unit. Please ignore the lack of kick panel near the pedals, and the speaker grille. Gotta love early models for not having actual kick panels there.
This car needs a golf ball shift knob.
Wheel looks nice, is it one of the Renown ones?
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This car needs a golf ball shift knob.
Wheel looks nice, is it one of the Renown ones?
Yeah I was eyeing up the golf boi... the current shifter is meh
Yeah it is a Renown unit, figured I'd give it a shot. Everything feels nice and sturdy, price is appealing, shall see how it holds up!
The tri-color stitching wasn't my first choice, but after ordering the black stitching they said they were out and it would be some time before getting any more. I think the tri-color is acceptable given the powerplant! -
Side note; data acquisition keeps getting postponed due to wet roads! I need full throttle full load for intake vacuum differential testing!
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This car needs a golf ball shift knob.
The golf ball shifter club (cult?) is lacking in members, we need more! They look best on a tall stick in my opinion
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How's the quality on the motorsport horn button?
Quality seems solid, crisp lines, smooth clear over the top.
The wheels I've wanted for this are finally in stock so I snagged a set, right after saying I was done with excessive spending for the rest of the month...
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Just popping in to say how sweet this thing is. Those dyno numbers are also absolutely nuts, really goes to show how much a proper tune makes a difference.
2011 E92 M3 6MT ZCP - ESS 625 supercharged
2007 Z4MR
2003 E39 M5
2002 E46 M3
2021 X5 40i
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