I Have a Problem
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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 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 -
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.
Thank you sir! a
I spent some time the other day with a clay bar and some paste wax. Certainly helped the paint out a fair bit! It's not perfect but it'll do.
I bought some radiator mounts from a late model (~$18 from BMW) which turned out to be part of the core support so I cut them apart and welded them onto my current chassis. I realized the radiator had been resting on the fan and not the lower rubber bumpers like I had thought
Solved that issue though, some dripping paint for the kids.
I've found this specific chassis to be fairly terrifying to drive, the rear end is clearly significantly lighter than the front so it is always looking to rotate around in any non straight situation. I was at the junkyard looking for some other parts and came across an E30 where the trunk tar was completely loose and intact, so I got that for $15 and will be throwing it in. I also got a battery cable from a late model (and all the fixings) and will be converting to a rear battery setup to help with weight balance further. Battery cable was only $15 too which was awesome.
Note the two tone trunk to plate area, as I haven't finished yet!
The piece of the puzzle that I have been waiting for! Konig countergram's in hyperchrome which have been backordered since October, one place got a handful in stock and I managed to grab a set. 15x8 et25 and will be running a 225/45r15 likely with an rt660 for fun.
Rears look like they will fit beautifully (IX rear end) and may have a smidge of room to go out further.
Fronts have the rim .05" off the strut tower, so I will need to space that out. May end up grabbing camber plates for the front to make things more proper and fit easier.
I'm stoked with the way they look in person!
This car is coming along nicely, it wasn't fun to drive when I got it due to clutch and various contact points, but it has been fun cleaning up all the small lingering items!
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We managed to pick up 75hp and 45ftlbs more torque on an NA engine which is simply astounding.
It's amazing what some added compression would do.
Love the car man. That airbox is much needed, you stand gains in that alone.
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The piece of the puzzle that I have been waiting for! Konig countergram's in hyperchrome which have been backordered since October, one place got a handful in stock and I managed to grab a set. 15x8 et25 and will be running a 225/45r15 likely with an rt660 for fun.
Rears look like they will fit beautifully (IX rear end) and may have a smidge of room to go out further.
Fronts have the rim .05" off the strut tower, so I will need to space that out. May end up grabbing camber plates for the front to make things more proper and fit easier.
I'm stoked with the way they look in person!This car is coming along nicely, it wasn't fun to drive when I got it due to clutch and various contact points, but it has been fun cleaning up all the small lingering items!
The car looked like Steel Blue for second when I first saw this picture.
you might need a 10mm spacer for the front. If I remember correctly, my first wheels for 16x8 20ET and needed a 5mm on the front to clear it.
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It's amazing what some added compression would do.
Love the car man. That airbox is much needed, you stand gains in that alone.
Increasing compression is only good for about 3% power gain over stock compression (when going to 11.5:1) but that combined with all of the top end work certainly made a difference!
Thanks! Airbox has been slow as I debate how to do other various items that would impact the airbox layout.The car looked like Steel Blue for second when I first saw this picture.
you might need a 10mm spacer for the front. If I remember correctly, my first wheels for 16x8 20ET and needed a 5mm on the front to clear it.
Yeah the fronts will be getting at least that much, possibly more depending on how close the tire is to the strut tube.
Finally had a dry enough day yesterday to test for intake vacuum at WOT. There was none.
Anyone want an M60 throttle body? haha -
Anyone want an M60 throttle body? haha
Possibly? Send me the part number Ben plz
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Possibly? Send me the part number Ben plz
Identical pic from the bay of e
1742010 is what is on the throttle boy.Ben Plz'd
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Possibly? Send me the part number Ben plz
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