My new to me M44 project

BlackBMWs

Check twice, fix once...
Supporter
American Zeds
The M44 Massive
Joined
Apr 17, 2016
Points
60
Location
Sacramento, California
Model of Z
Z3 1.9L, 2.3L
It was wrapped in a 1997 Z3 body.

I had much of this on another forum and pulled it over in the event it is interesting or helpful for other members here. I don't think anything extraordinary is going on here, just working the Z back to a more maintained and solid state.

I mentioned in another thread of mine that I am no mechanic by trade or impersonation, but rather by necessity. So, I tend to learn from folks in forums like this one and have had the cool opportunity to work on a few models over the years. The last few years, it seems I tend towards the M42s and M44s as my M62 is just a bit to thirsty to be practical as of late. The Z fits really well into that model and with the other cars I tend to work on.




It needs some TLC, but all the base things are in good shape. It has a new to the car M44, Remus exhaust, Catalytic Converter, struts/shocks, clutch, battery, W/HK sound system, heated seats, clean, but seriously needs hood paint. The body is totally straight with minor door dings. My initial observations were major vibration under load (Flex disc) and a huge exhaust leak somewhere. Reading the codes showed it had an O2 rear sensor fault and there is a misfire on Cyl #4..

It needs work, so the price was right. I grew up with Verts and while the 318ti Cali is nice for a big sunroof, it's not a vert. My main motive was price, shell, interior condition and that I have always liked the Z3s. It beat out a Porsche Boxster I was looking at the same weekend that was $2,200 more with a blown motor. I'm happy with this one as they are easy to renew.

A lady owned the car and used it for 180 mile daily commutes. High mileage, but reportedly highway miles. I suspect so as the suspension arms and steering components show minimal wear and tear.

I actually wanted a Z3M, but this was less than a 5th of the going cost and I have immediate available spares for most all that needs repair. Motor runs strong, but needs an oil pan gasket. Also needs tranny mounts and a flex disc.

I started my renewal list. Some things may be overkill, but I like to fix it once while I have things apart, then not have to mess with it again for awhile.

Ordered:
  • Replacement subwoofer grille
  • Replacement underbody shield
  • Magnecor 8.5mm ignition wires
  • Delrin seat bushings to fix shifting seat when braking
  • Dark red leather shift boot and eBrake boot
  • LED replacement bulbs for interior
  • Replacement zippered tinted rear window
  • PowerFlex rear diff mount
  • Tonneau cover (Thanks Kitty!)
  • Rear upper shock tower brace
  • Empire Cover for bird **** in the driveway protection
  • Instructional DVD on "How to replace your Z3 soft top"
On repair list:
  • Replace RSMs with Meyle HD RSMs and reinforcement plates
  • Fix Windshield washers
  • Oil Filter Housing gasket
  • Troubleshoot and test Hi/Low speed relays on cooling fan
  • Coolant pipes, hoses, alum radiator and flush coolant
  • Sew Zipper back on to top, install new window for top
  • Replace front solid rotors with E36 vented rotors, carriers and calipers
  • SS Brake lines
  • Hawk HP street pads all around
  • Flush brake fluid with fresh ATE
  • F/R strut tower bars
  • Install Rear Sway bar
  • Replace heated Windshield Washer nozzles
  • Replace 18 year old spare tire
  • Renew Audio system. Head Unit and Speakers
  • Repair A/C
  • Send the DME off to BarrieM in Montreal for his flash tune.
  • Install OEM or AM alarm keyless system
  • Repair stitching or replace Drivers heated seat bottom
  • Install HID/Halo headlights
  • Paint hood, replace side Roundels
It's the right color tho...

I believe this was the main satisfaction issue that cause the sale. They had just dropped in a rebuilt M44, but didn't replace the tired Flex Disc. Six months later, the car ran badly. Upon the test drive, I told the PO this, but they still wanted to sell it. $38 dollars for the part.

Also, the engine was leaking lotsa oil. Turns out the oil pan was leaking on the passenger side, rear oil pan bolts. $14 for the gasket, plus motor mounts since I had to drop the subframe anyway. I had new, spare motor mounts in storage

I like the tone of the exhaust (Once I corrected the exhaust leak)

The hood needs serious love. A paint job will be in order in due time. A new Roundel is usually the first order of repair for me. I have a bunch of spares on hand. I also reattached the rear view mirror and removed the leopard skin seat covers.

Little goofy odds and ends missing for little parts. Cracked intake boot, SMOG pump misaligned, A/C not charged, intake tube hose not properly installed. Missing under body airflow cooling parts, windshield nozzles not working. Little annoying, but fixable stuff....
Really bad headlight wear. I started to polish out the headlights. This was after 40 minutes of polishing. easily 50% better, but still needs more polishing. I will likely replace for a HID set for my old eyes.



I did pull out a bunch of renewal parts for the TIs that are same part#s for what I need on the Z3.


Something to be said about standardizing some aspect of your vehicles...
  • Power washed the underside, so I could better see what I am working with. I hate working on greasy cars on an ongoing basis.
  • Removed the shredded Flex Disc and wasted a bunch of time trying to figure out why spare Flex Disc wouldn't fit. Turned out my spare was for an automatic. Good lesson learned by wasting 4 hours I will never get back.
  • Found the source of the exhaust leak, Three of the four retaining nuts on the exhaust manifold flange are missing. This is the second issue that led to the sale. I replaced the gasket and installed four new nuts. Total parts cost $0 as I had the spares on hand.
  • I installed a M3 EVO three spoke steering wheel in place of the torn 4 spoke wheel. It is interesting that this steering wheels seems standard for other Z models.

  • I found the main oil leak. It is by the oil pan near the internal oil pump pickup. I suspect no gasket maker was applied to the oil pan gasket at the seams between the covers. The Oil Filter housing gasket does not seem to be leaking, but I'll do that one when I do the drivers side plastic coolant pipe.
  • I wire brushed the rust off the hubs, as the wheels were a bear to get off. Reinstalled them with anti seize and a set of wheel locks. Three of the four tires are now racing slicks. I will throw a set of DS-2s I have in storage with some great tread for the moment.
  • Tried to figure out if the storage compartment I have behind the seats is a dead subwoofer or a child proof storage area. If the latter, I suspect I won't be able to get in.
  • Ordered a replacement set of driving lights as I found the switch and the leads to the Fog lights.
  • Taped off the rear soft top window as I understand we have rain coming. Three years of drought and I suppose the trick to get it to rain is to buy a car with a leaking soft top.
  • Correct Flex Disc installed

  • Cleaned heat shields
  • Exhaust gasket and nuts addressed
  • Tranny mounts replaced. The shift pattern firmed up nicely and shifting is now crisp, not so sloppy.
  • Short weighted shift knob installed. The original would not fasten and was coming off in spirited shifts. All better...
  • Figured out how to get into the Subwoofer for inspection. (thank you guys!) The subwoofer looks and sounds clear. The rear drivers side mid is blown as is the passenger lower mid/low in the kick panel. Additionally, the drivers door speakers are not working. Repaired the cracks in the Subwoofer lid from underneath with epoxy and plastic reinforcement. I have the drivers door panel off troubleshooting the lock and the speakers presently.
  • Still have to figure out how to get access to the two other rear speakers. Knowing all is brittle, I want to do it right, rather than experiment.

  • Adjusted and lubed trunk lock. It now latches the first time around, rather than 4-5 slams.
The car was running smooth and sounding healthy after addressing both the Flex Disc and the exhaust issue. Then, after a little spirited driving, a terrible, constant misfire.

My BT reader indicated that the #4 plug started misfiring. Upon inspection, the boot was torn off and #4 plug was shorting on the block. I ordered new Magnecor wires and in the meantime, I'll see if I have a spare in storage this weekend to temp replace while I wait for the new wires.

I also noticed a familiar rattle behind the drivers seat. I suspect the Drivers side RSM is blown. I'll replace them both and install the reinforcement plates.

  • Replaced burnt out bulbs in instrument cluster

    Now I can see if I am overheating in the dark of the evening...
  • Replaced #4 spark plug wire. Runs smooth again
  • Tightened up loose center vent roller switch and rotating vents
  • Ordered spare lighted key
  • Cleaned Oil Pan and replaced it's gasket.

I believe the PO somewhat stripped the Oil Pan drain plug threads with a magnetic plug that had a different pitch to the bolt. It's in there snugly, but I'll plan on replacing the oil pan prolly at my next oil change. I'm getting quicker on swapping out M44 oil pans. I'll write and post an Oil Pan replacement DIY if one docent already exist
  • Replaced motor mounts. They were O.K, but getting deformed.
  • Powerwashed under body post oil pan gasket replacement (I suspect I will still have a Oil filter housing gasket leak to deal with. I'll take care of it when I replace the two plastic cooling pipes.
  • Addressed missing air cleaner horn to hose. It was just plain missing. I also refitted the foam air intake hose from a 318ti to the Z3 intake air scoop. All better.

  • Replaced the secondary air pump with one with the correct inlet. I suspect the PO replaced a failing one from an Air Pump from a different model. Same pump, different intake orientation. I replaced the rubber support bushings since I had it out anyway.
  • Replaced the oil filter and air filter
  • Obtained the radio code for the original radio. I may replace the BMW radio with a CD43 as I don't have cassettes anymore. Just need to confirm it will integrate with the changer for now. I typically have been swapping Alpine Media players in for Bluetooth integration and to charge my iPhone.
  • Completed Oil, tranny, diff fluid change. Mobil 1 15-40W and Redline for the tranny and Diff. Lubed locks and squeekey stuff.
  • Installed Fog lights
  • I'll SMOG the vehicle after Magnecor Ignition wires come in
  • I'll see if I can buff out more of the oxidation out of the hood. First pass on half of the hood showed promising results. It won't replace the clear coat, but it removed the gray oxidation and won't look so ghetto until I get the hood painted. I'll try a more aggressive compound for the real bad areas then work my way back up to finish with some Zymol as a stop gap until other areas get finished off and I can properly paint the hood..
  • Replace blown speakers with on hand HK speakers I have around
Thanks for reading, any tips or comments on what I also may need to consider are always welcome.
 
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BlackBMWs

Check twice, fix once...
Supporter
American Zeds
The M44 Massive
Joined
Apr 17, 2016
Points
60
Location
Sacramento, California
Model of Z
Z3 1.9L, 2.3L
I love getting stuff in the mail. More stuff will get done this weekend.



Installed. Couldn't wait for the weekend. Had to modify the cover plate a little to accommodate the thicker ignition wires. Put the Intake boot on too... (Not pictured)


Also found out what was wrong with the windshield wipers. the nib the supply hose fastens on to had broken and the hose was just lying loose between the hood and the sound deadening lining. Just ordered a pair of replacement heated nozzles.

hmmm... Add powdercoating the M44 valve cover and intake manifold to my to do list. Like this. This is the M42 in my 318ic. Maybe Dakar Yellow tho against the black engine bay...



I'd like to locate a nice, effective front upper strut bar if anyone knows of a good, light effective design. Please do let me know. My favorite are the Mason Engineering bars, but John dosen;t make them for Z3 1.9s. :( (Pictured is the Mason strut bar in my daily driver, a 1998 318ti, 1.9L Compact.)


Doing a little research to see if the Z's comfort seat bottoms are interchangable between the driver and passenger sides like other E36 seats. Looking to solve my future drivers side seat fix.

It will be a short repair weekend for me as I will be helping a pal as he tests and tunes his drag car this weekend. I'm his tow car driver and sometimes team crew cook. :)



Can I engine swap this into my Z3? 1200HP. I might need new springs... =))
 
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Shelly

Zorg Expert (I)
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British Zeds
East Anglian Crew
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Jul 9, 2013
Points
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Location
Norfolk
Model of Z
Z4 2.0 20i M Sport sDrive
What a GREAT write up :p
Very interesting ;)
Well done ;)
 

BlackBMWs

Check twice, fix once...
Supporter
American Zeds
The M44 Massive
Joined
Apr 17, 2016
Points
60
Location
Sacramento, California
Model of Z
Z3 1.9L, 2.3L
Pardon the mess, but if you have a 1997 Z3, are your seat heater switches in the rear, in-between the two seats? :wtf:

If so, what sort of logic placed them back there? I am thinking to relocate them forward to the dash where I have two blank plates for accident free access. :joyful:

If they were relocated to the rear, I should have spare wire. If originally aft(rear), I'll just need to visit my favorite place to get color matched wiring to be consistent when I relocate them forward.

 
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oldcarman

Zorg Guru (V)
Supporter
Canadian Zeds
The M44 Massive
Joined
Feb 11, 2014
Points
188
Location
Pine Falls Manitoba can.
Model of Z
1.9 M44
I don't have heated seats yet but will defo be moving the switches to the front when installed so will be paying close attention!! 1200HP in whichever car it's in must be a wonder to hear and watch. Dragging is my favorite motor sport and I've worked with several friends crews over the years dating back way too far!! lol. Good luck not that I think you'll need much. JIM
 

BlackBMWs

Check twice, fix once...
Supporter
American Zeds
The M44 Massive
Joined
Apr 17, 2016
Points
60
Location
Sacramento, California
Model of Z
Z3 1.9L, 2.3L
Oh yeah, the seat heater switches are moving forward...

Popped the plate for the switches. Wiring runs under and through the central console.


Here they are routing past the parking brake...



Assuming the exiting wiring can be rerouted, the switches will reside here. Now, I don't have to be a contortionist to turn on the heat. :thumbsup:



Now I just have to find the fasteners to remove the central console.

Installed my club badge...



and this one.... Nah, rather just put it in and keep it a sleeper...



Also working on the shift and e-Brake boot replacements this evening... I figured I put a little POP in the cabin.



Finished product. I'll install them in the morning.



More to come on that tomorrow... Cheers!
 
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BlackBMWs

Check twice, fix once...
Supporter
American Zeds
The M44 Massive
Joined
Apr 17, 2016
Points
60
Location
Sacramento, California
Model of Z
Z3 1.9L, 2.3L
Hmmmm. I can pull one and try to fit it. If it works, I'll order one from John for sure. Or which ever style fits. I have a few types.

Thank you!
 

BlackBMWs

Check twice, fix once...
Supporter
American Zeds
The M44 Massive
Joined
Apr 17, 2016
Points
60
Location
Sacramento, California
Model of Z
Z3 1.9L, 2.3L
Rain day today and I am off! work I'll set up a canopy and work interior items. Maybe i'll run over and get some sail thread for the top repair from the local marine shop.

Where did I put the speakers... ?
 

Jack Ratt

Zorg Expert (I)
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The West Country
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Dec 3, 2013
Points
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Location
TRURO, CORNWALL
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2.8i AUTO and 2.8i MANUAL
This is a great read:thumbsup:
 

BlackBMWs

Check twice, fix once...
Supporter
American Zeds
The M44 Massive
Joined
Apr 17, 2016
Points
60
Location
Sacramento, California
Model of Z
Z3 1.9L, 2.3L
So, today, I worked on the blown audio system. The front 5 1/4" turned out to be Infinity Reference 5000 speakers (Right) I replaced both of the Front's with Infinity 5002s (Left). The passenger side speaker was partially detatched from the rubber surround. The drivers side was just fine.

Both are replaced now. I'll repair the passenger side speaker for retrofit into one of the Compacts.



Both rear HK Mids were also blown. I replaced them with a pair of spare grey Nokias I had for the TIs. I have another pair of the HK Mids coming in. However, the Nokias are clear and working fine. One of the two 5 1/4 subs are breached. Not noticeable unless you crank the bass. Oddly, Mozart was the most noticeable music distorted. I have replacements coming in for me to repair the unit.



I also tested a CD-43 to replace the Cassette unit that was installed. All functions worked great and controlled the changer just fine. What is particularly nice is that the unit illumination works so I can see the stations or what's actually playing. I wasted about an hour just enjoying how nice the system now sounds.


I also test fitted the e-Brake and shift boots I glued together last night. I didn't fully push in the shift boot yet as I am removing the center console to move the seat heater switches from the aft to forward. Now i just need a pair of red and black M Roadster heated seats.

While I was there anyway, I adjusted the e-brake to six clicks. Actually holds now...


Speaking of the center console, I am trying to figure out how to remove it without breaking anything. I'll look it up in RealOEM and see where the fasteners are. I'll look for a DIY here and in other forums. If anyone knows of one, please point me in the right direction.

If it doesn't rain tomorrow, I'll be crewing at the Drag races tomorrow. If it rains, I will continue renewing the Z. Likely starting with installing this underbody shield to help with cooling airflow. When summer hits, Sacramento can normally be in the 110 degree temperature range, so cooling is imperative. I also have to test the high/low speeds on the cooling fan.



Cheers!
 
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BlackBMWs

Check twice, fix once...
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American Zeds
The M44 Massive
Joined
Apr 17, 2016
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Location
Sacramento, California
Model of Z
Z3 1.9L, 2.3L
No drag racing today as it was rained out.

I did open up the Sub today to see how bad the speakers were. The rear facing speaker had a small tear in the center paper coil.


The forward facing enclosed sub upon opening and inspection was just fine.


Here are the two 5 1/4 speakers. I was going to insert one of the Infinities in place of the torn woofer, but the ft was not optimal due to how the foam on the Infinity 5000 protrudes and the HKs are recessed.


The tear is barely visible, but it is there and you can hear it with low tones.


I did find intact Mids out of a HK equipped E36 at the wreckers in crashed E46s. The drivers under panel usually has a single black mid. I found three, kept the best two. $22


I had to post this. I was working on our Dodge van and I needed a part. The long box on the roof of my Cali is the fuel filter for the Van. The parts dude and I were both amazed how big the box was for a little fuel filter... I'll finish up the van tomorrow, so the doggies can go to the Dog park, then I can get back to working on the Z.

While I was at the parts store, I picked up some rubbing compound for another pass at the hood. If it dosent work out, I have a line on a good looking black hood, 60 or so miles away
 
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5harp3y

Zorg Guru (IV)
British Zeds
Joined
Jul 10, 2015
Points
168
Location
Basingstoke
Model of Z
2.8
Centre console is easy to remove.

Two screws at the back either side
Two screws under the rear cover (switch or oddments tray depending on model)
Four screws under small covers at the front sides.
Pull the center heater vents out (just yank them)
Remove stereo
Remove gearknob and boot
Remove handbrake handle and boot

Then the console is only held in by the wiring looms.
 

BlackBMWs

Check twice, fix once...
Supporter
American Zeds
The M44 Massive
Joined
Apr 17, 2016
Points
60
Location
Sacramento, California
Model of Z
Z3 1.9L, 2.3L
Centre console is easy to remove.
Two screws at the back either side
Two screws under the rear cover (switch or oddments tray depending on model)
Four screws under small covers at the front sides.
Pull the center heater vents out (just yank them)
Remove stereo
Remove gearknob and boot
Remove handbrake handle and boot

Then the console is only held in by the wiring looms.
Thanks! I believe I'm stuck at the four front screws under the small covers. Which small covers? I pulled four screws in the area by the radio opening. are there more under the side trim along the side of the console?

screws under Part #13?
http://www.realoem.com/bmw/enUS/showparts?id=CH73-USA-05-1997-Z3-BMW-Z3_19&diagId=51_2369
 

5harp3y

Zorg Guru (IV)
British Zeds
Joined
Jul 10, 2015
Points
168
Location
Basingstoke
Model of Z
2.8
No they are on the side of the centre console in the footwells

They are under small black caps that need to be pried off
 

5harp3y

Zorg Guru (IV)
British Zeds
Joined
Jul 10, 2015
Points
168
Location
Basingstoke
Model of Z
2.8
The whole tunnel console needs to be removed to remove the fascia panels.
DSC_2654.JPG
 
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