Search found 62 matches

by tlake
Fri Jul 10, 2020 1:59 pm
Forum: Tech Forum
Topic: Automatic Transmissions?
Replies: 9
Views: 107

Re: Automatic Transmissions?

In any event the Getrag 265 5 speed is the best gearbox for an E12. More fun to drive and better gas mileage. IMHO :) I know a lot of people get bugged by the highway cruising, but the old Getrag 262 4 speed was nice. The earlier ZF (it had BW synchronizers) 4 speed had a lighter feel, but the 2nd ...
by tlake
Thu Jul 09, 2020 2:56 pm
Forum: Tech Forum
Topic: Automatic Transmissions?
Replies: 9
Views: 107

Re: Automatic Transmissions?

Karl, In my experience throughout the years and various generations of bimmers (E12, E28, E34, E38, E46, E53), I have tried to avoid ZF as much as possible. They seem to enjoy "complicating" parts that have no business being complicated. I have dug through ZF and GM transmissions from my various bi...
by tlake
Thu Jul 09, 2020 11:20 am
Forum: Tech Forum
Topic: Automatic Transmissions?
Replies: 9
Views: 107

Re: Automatic Transmissions?

Karl, In my experience throughout the years and various generations of bimmers (E12, E28, E34, E38, E46, E53), I have tried to avoid ZF as much as possible. They seem to enjoy "complicating" parts that have no business being complicated. I have dug through ZF and GM transmissions from my various bi...
by tlake
Wed Jul 08, 2020 12:58 pm
Forum: Tech Forum
Topic: Automatic Transmissions?
Replies: 9
Views: 107

Re: Automatic Transmissions?

I'm repairing a new to me 77 530i. Is there an easy way to tell if the automatic is a ZF or Borg Warner...markings? Was one considered more trouble free than the other? Easiest way to tell is the shifter stick, the BW-65 has an old school T-bar handle, the ZF 3HP22 has a rounded handle, like the ye...
by tlake
Thu Jun 04, 2020 12:02 pm
Forum: Tech Forum
Topic: C-pillar Vent Rehab
Replies: 9
Views: 291

Re: C-pillar Vent Rehab

Excellent Eric. 8) And I like your red pinstripe on the black paintwork. Pinstriping used to be so fashionable on cars.
by tlake
Sun May 24, 2020 2:26 pm
Forum: Tech Forum
Topic: 1980-83 e21 320i, oxygen sensor question
Replies: 5
Views: 466

Re: 1980-83 e21 320i, oxygen sensor question

Mike W. wrote:
Sat May 23, 2020 3:27 pm
E21s with O2 sensors used a frequency valve. It modulated the control pressure going to the fuel distributor which in turn controlled mixture.
Thanks Mike, I always wondered how those cars worked, since the rest of the range had L-jet. :)
by tlake
Sun May 03, 2020 1:26 pm
Forum: Tech Forum
Topic: 1980-83 e21 320i, oxygen sensor question
Replies: 5
Views: 466

Re: 1980-83 e21 320i, oxygen sensor question

The O2 sensor produces an electrical signal, so it has to be processed somehow. This article mentions a controller of some kind that modulates fuel pressure through a valve that appears to be especially for K-Jet with lambda control : http://cleanflametrap.com/kjetControlller.htm I don't know much ...
by tlake
Sun May 03, 2020 11:19 am
Forum: Tech Forum
Topic: 1980-83 e21 320i, oxygen sensor question
Replies: 5
Views: 466

1980-83 e21 320i, oxygen sensor question

The 1980-83 e21 320i had the 3 way cat and oxygen sensor, but how did they do that with K-jet? How did they keep the fuel/air ratio at the 14.7:1 level precisely, when the fuel injection didn't have a computer :?:
by tlake
Tue Apr 21, 2020 12:21 am
Forum: Tech Forum
Topic: Coolant in oil
Replies: 4
Views: 438

Re: Coolant in oil

If you get lucky you might find an early, possibly Euro, block for a very reasonable price. An easy swap in for a very noticeable improvement in performance.
by tlake
Mon Apr 06, 2020 10:52 am
Forum: Tech Forum
Topic: Aux Fan
Replies: 10
Views: 679

Re: Aux Fan

I have a new Rad. Its OEM Brass but new. Temp was around 20C outside. I bled using the bleeder screw on the T-Stat. I think i might have a bad ground issue. The temp needle rocks when i have my flasher on, much like an ammeter would. Aux fan might well be a NA thing. I might just wire a switch to t...
by tlake
Sun Apr 05, 2020 11:19 am
Forum: Tech Forum
Topic: Aux Fan
Replies: 10
Views: 679

Re: Aux Fan

I think the aux fan on non a/c e12s could be a North American thing. I have seen pics of Euro cars sans a/c, and they don't have the extra fan, not even e28s. Given the 530i got factory a/c standard from 1977, and you are likely to be using a/c on a warm day anyway, I guess the window of the aux fan...
by tlake
Fri Apr 03, 2020 11:40 am
Forum: Tech Forum
Topic: Aux Fan
Replies: 10
Views: 679

Re: Aux Fan

From what you said it sounds like the car has a/c, but didn't come new with factory a/c :?: My understanding is the aux fan is for the a/c condenser, and only comes on when the a/c is turned on. The aux fan's job is to expel heat from the a/c condenser. For the car's cooling system radiator you have...
by tlake
Thu Apr 02, 2020 12:10 pm
Forum: Tech Forum
Topic: LS swap
Replies: 3
Views: 447

Re: LS swap

This is an account of a 1975 530i owner, his first car, that mentioned how stable the car was at over 80 mph. :)

First car e12 530i

Here's a You Tube clip of someone doing 100 mph in his 1975 530i automatic :!: 8)

e12 530i at 100 mph
by tlake
Thu Apr 02, 2020 11:43 am
Forum: Tech Forum
Topic: LS swap
Replies: 3
Views: 447

Re: LS swap

One reason BMW liked to mount the M30 far forward was so the weight would pin the nose of the car to the ground at high speed. Many cars get very light in the front end at high speed (over 100 mph). I had the hood off my E12 recently and at 80 mph the front end was getting noticeably lightfooted wi...
by tlake
Thu Apr 02, 2020 12:44 am
Forum: Tech Forum
Topic: LS swap
Replies: 3
Views: 447

LS swap

I came across this article on the Joe Cain LS swapped e12. It looks like a great installation, but there is some misinformation in the article. All aluminum LS motors are around 400 lbs in weight dressed up, an M30 six is around 300 lbs, an old school Chevy small block 350 is 500 lbs, the same weigh...