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by songzunhuang
Sun Jun 10, 2018 12:35 am
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Wheel swap and other fun

My front tires wear on the outside and my rear tires wear on the inside. So I decided to swap the front and rear tires today to even out the wear. Wheelswap.png In the process, I also noticed that my front outer tie rod on the passenger side has about 1/16" of play. Perhaps this was a result of my i...
by songzunhuang
Tue Jun 05, 2018 5:26 am
Forum: My Project
Topic: Good things begin on Jan. 12, 2009!!
Replies: 197
Views: 49588

Re: Good things begin on Jan. 12, 2009!!

Right! I needed a new starter and new CV boots. Autohausz got the order and while the CV boots can be gotten for less, the shipping eats up the difference. Anyway, I'm having a shop swap out the old starter and put in the new one. I am just too damn old to fight that fight AGAIN. Twitchy backs do N...
by songzunhuang
Thu May 31, 2018 5:36 pm
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Re: 1984 633CSi Rises again!

I was going to suggest an additional heatsink, too. This one works at the original mounting position with a little modification. Good to see you posting again, Song. I'd thought you were gone for good. I'm still here! I've been super busy at work and then jetted off for 2 weeks on a 25th anniversar...
by songzunhuang
Thu May 31, 2018 5:28 pm
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Re: 1984 633CSi Rises again!

Song, did you replace your heater fan motor? After replacing these transistors multiple times I suspect that the real culprit is the old fan motors which either stick or are slow to start up and pull too much current. I replaced the heater and AC fan transistors and they both failed within a year. ...
by songzunhuang
Thu May 31, 2018 8:25 am
Forum: My Project
Topic: My 6'er
Replies: 31
Views: 4766

Re: My 6'er

No worries, my middle name is "slow progress". If you saw my Projects thread, I have let my poor car sit for something like 2 years. Like you, I am back on it and the A/C is one thing I will be tackling as well so I am looking for as much helpful info as I can get. Keep working on it and enjoy the ...
by songzunhuang
Thu May 31, 2018 7:59 am
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Blower motor transistor issues again...

I haven't been doing a lot to my car except driving it. That doesn't mean that stuff hasn't been happening. Since the last posts, four things have happened to my car and one thing hasn't changed. First , what hasn't changed. My idle is still a bit rough, but the engine is smooth once I get past 1,10...
by songzunhuang
Mon Apr 23, 2018 6:41 pm
Forum: The Saloon
Topic: What did you do to your E24 today?
Replies: 681
Views: 98110

Re: What did you do to your E24 today?

I scored a set of Recaros and rears in great condition a few weeks ago and finally had a chance to put them all in this weekend. I had a set of seats scrounged from an Infinity in the car "temporarily" for the last 3 years. The original sport seats have been out of the car waiting for me to have ti...
by songzunhuang
Sun Mar 25, 2018 4:31 pm
Forum: My Project
Topic: Finally! '85 635CSi - Euro-Spec-Stick!
Replies: 36
Views: 3569

Re: Finally! '85 635CSi - Euro-Spec-Stick!

I’d say you got a really good deal. Your car looks to be in great shape, especially the engine compartment. Good example in Northern California are $6-8K and rough ones are $4-5K. The rust in the fender is an easy fix (I had that too). I did notice the diagnostic port wasn’t in it’s normal perch. Al...
by songzunhuang
Fri Mar 23, 2018 10:04 pm
Forum: Cars and Parts for sale
Topic: 635 in NorCal for $4,300
Replies: 0
Views: 14196

635 in NorCal for $4,300

So I came across this ad in Craigslist. https://sfbay.craigslist.org/sby/cto/d/fs-ft-1985-bmw-635csi-127k/6533598117.html This is a 1985 with 127K miles for $4,300. That seems like a good deal and all California cars seem to be really clean. It's an auto, but we know how to update that or some don't...
by songzunhuang
Fri Mar 23, 2018 6:44 pm
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

New plug wires and O2 sensor

The next step of my ongoing attempt to resolve a rough idle. I had a few new parts come in and I wanted to record it here. First was the upstream O2 sensor. Now, I know that it doesn't really do anything to the cold idle since it's not kicking in until it is up to temperature, but I figure it can't ...
by songzunhuang
Fri Mar 23, 2018 6:22 am
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Re: 1984 633CSi Rises again!

LandShark wrote:
Thu Mar 22, 2018 8:00 pm
Lovely work. How's the Sugru holding up?
Pretty good. It’s not shrunk or separated from the edges of the crack. When I have more time and there’s not a higher priority, I’ll try and fill in all the cracks on my dash. Perhaps I can lose the dashmat.
by songzunhuang
Tue Mar 20, 2018 1:08 am
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Re: 1984 633CSi Rises again!

tschultz wrote:
Tue Mar 20, 2018 12:39 am
Couldn't your idle problem be the green control unit in the glovebox going bad?
How does one go about testing that, besides having a known good one to swap out - which I don't have.
by songzunhuang
Tue Mar 20, 2018 1:07 am
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Re: 1984 633CSi Rises again!

raykoke wrote:
Mon Mar 19, 2018 6:18 pm
You have no MAF :)

Clean the track on your AFM with an eraser.

Cheers,

Ray
Oh sorry, I called it a MAF sensor but I knew it was a AFM.
However, I don't know what you mean by cleaning it with an eraser. What is the "track" I am to clean?
Thanks in advance. I'll try anything right now.
by songzunhuang
Mon Mar 19, 2018 8:42 am
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Changed the plugs to Bosch

So I've been running Denso plugs since before my head gasket replacement. I've been having rough idle issues and had read that Bosch WR9LS were the proper plugs for the car. On a longshot that the plugs would make the difference, I decided to replace the plugs. This would also allow me to see the co...
by songzunhuang
Tue Mar 13, 2018 1:09 am
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Re: 1984 633CSi Rises again!

I'm too lazy to read through your thread again :) but have you done a valve adjustment? Otherwise maybe ignition. And look again for vacuum leaks. I think. It's always the last place you look! ;-) Cheers, Ray Haha, I know what you mean about taking time to read through a long thread. My valves were...
by songzunhuang
Mon Mar 12, 2018 8:57 pm
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Re: 1984 633CSi Rises again!

Very nice work, I did that job a few weeks ago. Injector cleaning in that way works a treat and the painted fuel rail is a big improvement...especially in anodised gold colour. It was fun doing this service. It's the first time I've done an injection service. I learned a few things, but I am sad to...
by songzunhuang
Mon Mar 12, 2018 7:20 am
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Fuel Injector Rebuild

So I have been battling a rough idle. Looking at the Bentley's book, it said that this could be caused by bad injectors or injectors seals. Since I don't think this car has ever had the injectors serviced, I thought I would give it a go. Of course, when I took off the fuel rail with the injectors, I...
by songzunhuang
Thu Mar 08, 2018 10:44 pm
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Important Stuff - Cupholders

Why didn't cars back in the 1980's have decent cupholders? I found myself pondering this problem as I was balancing a drink between my legs driving the e24. These past few days, I was on the search for a solution. I came up with 2 of them. First was a natural idea. I meant to put it on the console, ...
by songzunhuang
Sat Mar 03, 2018 2:27 am
Forum: My Project
Topic: cylinder head rebuild and L Jetronic injectors
Replies: 18
Views: 1806

Re: cylinder head rebuild and L Jetronic injectors

Hey guys - my head gasket needs replacing, at the very least (8/86 635Csi). I don't see oil in the coolant, but need to dig deeper to see if there's other damage. If I DO NOT need to just replace entirely with another B34 head (worst case scenario the head is cracked), what do you figure the job wo...
by songzunhuang
Thu Mar 01, 2018 7:20 am
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Re: 1984 633CSi Rises again!

I love Cali cars. So clean compared to our Northeast salt suckers. It even takes a few weeks of spring rains to scrub the streets to where it is safe to bring the garage queen out of hiding. --Ken Yea, I count my blessings. I drive this car rain or shine. There's so little rain in Cali these days. ...
by songzunhuang
Mon Feb 26, 2018 3:34 am
Forum: My Project
Topic: 1984 633CSi Rises again!
Replies: 633
Views: 73782

Replace Exhaust Hangers

Finally got to the exhaust hangers that many of you pointed out were less than ideal. Pretty easy to change with a floor jack. Old rings.png Using a floorjack, it was pretty easy to take the tension off of the old hangers to slip them out. Jackup.png Here's a shot of the new exhaust hanger in place....
by songzunhuang
Sat Feb 17, 2018 2:03 am
Forum: Engine - Mechanical - Electrical
Topic: Fuel smell/small leak/pressure in tank after filling
Replies: 9
Views: 937

Re: Fuel smell/small leak/pressure in tank after filling

Song, I have removed a few rubber cover things from fuel tank necks. The rubber was fairly hard on one and I finally just cut if off with an exacto knife. New ones are $29 I think. The other one I removed was in better shape and quite pliable. It took some twisting and pulling etc but it came off t...
by songzunhuang
Wed Feb 14, 2018 7:18 am
Forum: Engine - Mechanical - Electrical
Topic: Motor mount replacement interval?
Replies: 9
Views: 686

Re: Motor mount replacement interval?

hornhospital wrote:
Tue Feb 13, 2018 6:00 pm
Advice from someone who's done it: Do the transmission mounts and engine mounts at the same time. Do ONE SIDE at a time. That way the engine mounts don't bind up like they will with the entire engine jacked up.
My car is an automatic. Same advice?
by songzunhuang
Wed Feb 14, 2018 7:18 am
Forum: Engine - Mechanical - Electrical
Topic: Motor mount replacement interval?
Replies: 9
Views: 686

Re: Motor mount replacement interval?

sansouci wrote:
Tue Feb 13, 2018 2:01 pm
Song,
Did you already do the trans mount and the diff mount?
Nope, I haven't done any of the mounts. They don't look bad. I was just pondering...
by songzunhuang
Mon Feb 12, 2018 10:07 pm
Forum: Engine - Mechanical - Electrical
Topic: Motor mount replacement interval?
Replies: 9
Views: 686

Re: Motor mount replacement interval?

I replaced mine after 30 odd years. Didn't make any difference to anything and it was a pig of a job which took hours. The trouble is that the rubber mounts get stuck in the engine mounting arms. I had to remove one of the mounting arms from the side of the engine to pull it out. This with the engi...