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by Brucey
Sat Nov 17, 2018 9:05 pm
Forum: Interior
Topic: Cabin filter
Replies: 13
Views: 149

Re: Cabin filter

sharkfan wrote:
Sat Nov 17, 2018 3:16 pm
I meant at either end of the black metal cowl under the bonnet.
yes I know, but anything that is in danger of getting sucked in there has to get past rubber seals and/or the bonnet louvres (which have plastic grilles beneath) first, doesn't it...?

cheers
by Brucey
Sat Nov 17, 2018 4:26 pm
Forum: Engine - Mechanical - Electrical
Topic: M30 B34 low oil pressure - engine out!
Replies: 6
Views: 78

Re: M30 B34 low oil pressure - engine out!

if the oil pressure switch seems mysteriously oily, the chances are excellent that it has simply failed. Note also that various other electrical idiosyncrasies can also lead to the oil pressure light staying on, often in combination with other dash lights.

cheers
by Brucey
Sat Nov 17, 2018 9:43 am
Forum: Interior
Topic: Cabin filter
Replies: 13
Views: 149

Re: Cabin filter

the plastic grilles under the bonnet slots stop the worst of it; most of what gets in there is mostly small stuff, so a grille to stop stuff from getting into the fan itself would have to have a very small mesh size to it. Note also that the cover is sealed along its length by foam strips; these are...
by Brucey
Sat Nov 17, 2018 9:38 am
Forum: Interior
Topic: Mystery spot in the toolkit box
Replies: 51
Views: 3158

Re: Mystery spot in the toolkit box

sharkfan wrote:
Sat Nov 17, 2018 7:43 am
There are correct length 12/13mm ring spanners available for that slot - I'll pop up a picture later.
it is the open-ended 12/13 spanner that is too short, surely? There are only three double-ended ring spanners and they are all present and correct...?

cheers
by Brucey
Thu Nov 15, 2018 10:15 am
Forum: Interior
Topic: Cabin filter
Replies: 13
Views: 149

Re: Cabin filter

https://upload.wikimedia.org/wikipedia/commons/2/23/BMW_E24_M6_US_Engine_bay_Intake.JPG the above shows a standard engine bay. You can see that the area around the top of the scuttle panel (where the windscreen wiper motor, ABS ECU, third horn, intensive reservoir and interior fan motor sit) is edg...
by Brucey
Wed Nov 14, 2018 11:50 pm
Forum: Engine - Mechanical - Electrical
Topic: engine stopping when it gets warm
Replies: 11
Views: 191

Re: engine stopping when it gets warm

I forgot to ask is there any fault codes with the BMW 635 that can indicate the faults ??? Scarland on most models, no. There is a limited fault code function on later models. I have rarely heard of anyone correctly diagnosing a fault with it though.... bad solder joints in the ECU can cause exactl...
by Brucey
Wed Nov 14, 2018 11:41 pm
Forum: Exterior
Topic: Windshield washer nozzle location?
Replies: 4
Views: 382

Re: Windshield washer nozzle location?

parts #7 & #8 here http://static.bmwfans.info/images/epc/Nzg0NV9w.png http://2009.bmwfans.info/parts/catalog/E24/Coupe/Europe/630CS-M30/browse/vehicle_electrical_system/single_parts_for_windshield_cleaning/ show as applicable to 630CS, 630CSi, 633CSi models, up to 4/77 for the 633CSi model. I expect...
by Brucey
Tue Nov 13, 2018 8:17 am
Forum: Suspension - Steering - Brakes
Topic: E12 based car
Replies: 1
Views: 63

Re: E12 based car

.....I am all clear about ....... J-tronic vs M-tronic ....... E24 used a carburettor fuelled engine initially and soon moved to engines fuelled by Bosch L-Jetronic systems. [The L stands for 'Luft' because of the distinctive airflow meter in L-jet systems]. This is an electronic fuel injection sys...
by Brucey
Mon Nov 12, 2018 9:24 pm
Forum: Engine - Mechanical - Electrical
Topic: m635 Exhaust options
Replies: 50
Views: 5265

Re: m635 Exhaust options

that is a bit disappointing. Even so I would warrant that they were still much better than the average cheap crap on ebay.....?

cheers
by Brucey
Mon Nov 12, 2018 10:56 am
Forum: Engine - Mechanical - Electrical
Topic: m635 Exhaust options
Replies: 50
Views: 5265

Re: m635 Exhaust options

FWIW I bought a set of Fritz's headers (in fact a full system) for my M30 about fifteen years ago and the flanges were welded as per the M88 set you have just bought. I guess since I bought mine they have started to make the M30 headers differently (i.e. 'welded all round') but they have continued t...
by Brucey
Sat Nov 10, 2018 10:57 pm
Forum: Engine - Mechanical - Electrical
Topic: Need help. Engine Ground Straps
Replies: 6
Views: 165

Re: Need help. Engine Ground Straps

in fairness you can make a flying ground lead and try it in various places to see if it makes a difference or not. I suspect it won't make any difference and it if does, it signifies that you have a problem elsewhere, but there is no harm in trying...?

cheers
by Brucey
Tue Nov 06, 2018 11:01 am
Forum: Engine - Mechanical - Electrical
Topic: Need help. Engine Ground Straps
Replies: 6
Views: 165

Re: Need help. Engine Ground Straps

I think the answer is 'probably not', as it applies to motronic models manufactured from mid 1980 until 6/87. The reason I say this is that there is a large earth strap connecting the engine to the body, without which the starter motor won't turn. Making sure that the earths (see ETM for locations) ...
by Brucey
Tue Nov 06, 2018 9:03 am
Forum: Engine - Mechanical - Electrical
Topic: m635 Exhaust options
Replies: 50
Views: 5265

Re: m635 Exhaust options

DRPM. What was the source for those headers ? Will they clear engine mount/control arm mount/steering box for RHD ? they look like fritz's manifolds to me, http://www.fritzsbits.co.uk/exhausts-manifolds so yes they are designed to clear the RHD steering box arrangement. ...Mine too had joined flang...
by Brucey
Mon Nov 05, 2018 3:32 pm
Forum: Engine - Mechanical - Electrical
Topic: Auto trans filter/fluid change
Replies: 3
Views: 71

Re: Auto trans filter/fluid change

if you take that view, you inevitably wait until the gearbox is broken, and/or the oil is the colour of treacle before you do anything about it. My view is that if you have seen the state of a filter and the magnets in the bottom of an autobox, you would not for a moment consider leaving it alone an...
by Brucey
Sun Nov 04, 2018 7:07 pm
Forum: Suspension - Steering - Brakes
Topic: Tired of lowered car
Replies: 7
Views: 221

Re: Tired of lowered car

FWIW if you try to use lowering springs but adjusted to give near-standard ride height (via perch adjustments or packing at the front), you need to be careful that you don't end up with the spring going coilbound in bump; it is pretty much touch and go at the back with a standard setup and a lot of ...
by Brucey
Fri Nov 02, 2018 12:04 am
Forum: Suspension - Steering - Brakes
Topic: Bilstein sieze up question
Replies: 3
Views: 147

Re: Bilstein sieze up question

if you are stupid enough to run the fronts in wet weather without dust boots, water gets into the bushings and can cause them to seize.

Boots are not optional on front bilsteins; they need to be intact, well secured at the top, and fitted to the correct nylon piece at the bottom.

cheers
by Brucey
Thu Nov 01, 2018 9:04 am
Forum: Engine - Mechanical - Electrical
Topic: which computer drives the Check Engine light
Replies: 12
Views: 217

Re: which computer drives the Check Engine light

good result about the crank sensors! Starting and dying after a few seconds are signs that the CSI is working but the main injectors are perhaps not. Worth just checking that the main injectors are actually opening when they see the signal. If they are clicking when the signal is applied this is a g...
by Brucey
Wed Oct 31, 2018 6:08 pm
Forum: Engine - Mechanical - Electrical
Topic: which computer drives the Check Engine light
Replies: 12
Views: 217

Re: which computer drives the Check Engine light

again, it is called a REF sensor. In the workshop manual the horizontal axis is indicated as being calibrated in ms.

I have asked this before; have you tested the feed to the coil under load?

cheers
by Brucey
Wed Oct 31, 2018 12:28 pm
Forum: Suspension - Steering - Brakes
Topic: Tired of lowered car
Replies: 7
Views: 221

Re: Tired of lowered car

this photo shows the difference in sports and HD shocks at the rear http://82.78.8.129/mye28/trailing_arms/Bilstein_rear_Sport-vs-HD.jpg from this it is quite clear that the sports shocks can be used with standard springs and indeed offer a wider range of ride height adjustment. The only thing that ...
by Brucey
Wed Oct 31, 2018 11:54 am
Forum: Suspension - Steering - Brakes
Topic: Tired of lowered car
Replies: 7
Views: 221

Re: Tired of lowered car

since the damping rates are similar between the sports and HDs you might was well try the new springs with the extant shocks. You probably need new (internal to the insert at the front) bump stops anyway, so you could choose those to match the new ride height better anyway. The big differences betwe...
by Brucey
Tue Oct 30, 2018 8:37 pm
Forum: Engine - Mechanical - Electrical
Topic: which computer drives the Check Engine light
Replies: 12
Views: 217

Re: which computer drives the Check Engine light

it is not (on pre 6/87 cars) strictly a cylinder ID sensor, it is effectively a TDC sensor. In BMW/Bosch speak it is the 'REF sensor'. The injectors fire every turn of the engine (so twice per combustion cycle) and are 'batch fired' i.e. all six at once. The only way the engine identifies a cylinder...
by Brucey
Tue Oct 30, 2018 9:00 am
Forum: Engine - Mechanical - Electrical
Topic: which computer drives the Check Engine light
Replies: 12
Views: 217

Re: which computer drives the Check Engine light

if the 'check' light appears in the dash it means that a) you have not pushed the brake pedal yet (which tests the brake lights) and/or b) one of the things in the check panel (to the side of the dashboard) has failed its check. There will be an LED to say which one. This system is entirely passive,...
by Brucey
Tue Oct 30, 2018 8:56 am
Forum: Engine - Mechanical - Electrical
Topic: No Spark but all ECU inputs look right
Replies: 8
Views: 194

Re: No Spark but all ECU inputs look right

have you tested the various 12V feeds to be sure that they hold up under load? A bad contact can show 12V on a DMM but be nigh-on useless when you actually draw current. It is basically the same deal with ground connections too.

cheers
by Brucey
Mon Oct 29, 2018 1:42 pm
Forum: Engine - Mechanical - Electrical
Topic: Blown headgasket
Replies: 10
Views: 246

Re: Blown headgasket

I was wondering if you could get as far as working on the head and manifolds (eg using an engine crane or just laid upside down on a piece of wood) off the engine but still in the engine bay, whilst you enjoy better access to the lower inlet manifold nuts.....? Never done it, but might try that if I...
by Brucey
Sun Oct 28, 2018 10:19 am
Forum: Engine - Mechanical - Electrical
Topic: Timing Specs 77/78 M90 635CSi EURO
Replies: 7
Views: 236

Re: Timing Specs 77/78 M90 635CSi EURO

there is quite a lot of useful info on this in the E12 Haynes manual; the same engines are used and there are various different distributors and therefore target rpms. Normally there is a 'knee' in the advance curve and this represents the position where the soft spring on the bob weights taps out a...