E30 Zone

by cros

Re:

Good idea about the front section - thanks guys!

by cros

Re:

Bump wrote:if I mess up the headlining at least I tried, but as dips says he gave me a killer tip to get a better finish (got one coming btw dips, still need a sunroof panel though)

dips/bump - what's the knack?

by cros

Re:

http://www.r3vlimited.com/board/showthread.php?t=54498

by cros

Out of interest, what are the extra holes in your headlining for?
(On the left and right over centre of the boot section)

by cros

Re: 3.73, 3.91 or 4.10 diffs on an M40 316

Thanks guys! I know there's more to it (engine speed vs torque @ the crank not being flat for one), but assuming you're in a relatively flat mid-band and within 500RPM on either diff, wouldn't dropping 4.27 to 3.73 only mean a decrease of about 14% wheel torque for a given road speed and gear? I sup...

by cros

3.73, 3.91 or 4.10 diffs on an M40 316

Has anyone actually tried a lower ratio diff on an M40 1.6? The numbers say that dropping from a 4.27 to a 3.73 would take 500 RPM off cruising speed in 5th, which would be good: 70 @ 3000RPM. In fact, all speeds in all gears look less frantic. First is way too short as it is, so any slight increase...

by cros

Re:

oze30 wrote:and on the speedo wires, what are the low and hi side wire's colours?

From memory the speedo sender just shorts the two wires together. The speedo itself floats a small voltage on one wire, which is pulled to ground by the sender causing a current pulse that gets detected and processed.

by cros

Re:

cros's thread is named Speedo/tacho error & calibration. It's a great read! oze30 What you logged in through, e30zone.net or .co.uk???? use the .net site and you should be able to link to cros's post. Thanks! oze30, you might be logged onto http://e30zone.net but the link is to http://www.e30zone.n...

by cros

At source, it's 9 pulses per wheel rev. Exact pulses per mile is dependent on wheel size, tyre pressure, tyre tread etc.

But, at the sink, the small print on the speedo says how many it expects to see per mile ('K=xxxx'):

http://www.e30zone.net/modules.php?name ... pic&t=2549

by cros

Pipework etc. all the same, but the rear box is slightly bigger on the 318 and needs different hanging brackets.

I found this out the hard way.

by cros

It can be adjusted - there's a screw on the speedo circuit board.

You have to take out the clocks and it'll be a bit hit and miss unless you have a frequency generator to hand though: http://www.e30zone.net/modules.php?name ... pic&t=2549

by cros

Thanks, that makes sense!

I found a manual for a bush tool, the first thing mentioned is about the bump alignment: http://www.pvrdirect.co.uk/netalogue/pd ... vs4465.pdf

by cros

Subframe bush alignment

Should the drawn line run from front-to-rear or left-to-right?

...or does the shape of the bush only allow mounting in one position anyway?

by cros

Re: Dashboard Cracks

Aah, a subject I've spent too much time on. My '94 had an unusually long and deep crack in the normal place when I got it. The filler that had been put in there looked rubbish. I replaced it with an '84 one that had an almost invisible hairline crack. A year later that had grown out of the pocket re...

by cros

E30 M3 DTM/Gr A tech photos

Found these three tech tours of racing M3s. http://e30m3performance.com/tech_articles/misc-tech/index.htm Some interesting things, including an output-driven diff oil cooling pump: http://e30m3performance.com/tech_articles/misc-tech/ap_gr-a/rr4.jpg May have been posted before, but I searched and did...

by cros

Kind of related: why non-halogen bulbs turn black (link)

by cros

Re: Phillips silver vision

Have you seen this - DIY silver bulbs. The pictures look convincing:
http://www.m5board.com/vbulletin/showthread.php?t=26016

by cros

Re: how long have i got left?!

Have a look at the end of this: http://www.totalbmwmag.com/HandsOn/TechOct01.PDF

by cros

Re:

Mine was exactly like that when I got it. The bracket the door strap is pinned into had broken away from the pillar. Made two loud bangs every time it was opened or closed. It needs to be welded. Pull away the rubber seal, take out the pin and move the strap out of the way. You can then either put s...

by cros

From Varta's LiMnO2 specs, the cylindrical 1/2AA will run a 25uA load for 4.5 years even with cell ageing. But also they self-discharge to being useless after 7 years at 45deg or ~10years at 20deg even without a load. I suppose all these are worst-case numbers though, but they suggest any factory fi...

by cros

The lithium cells have a shelf life of about 10 years. In the SI board application they'll most likely die due to old age rather than being drained. New cells are about Ãƒ”šÃ‚£6 each.

by cros

Borderbmw wrote:Do the batteries look different?

These are the lithium type. They are 1/2 AA size, 3v each.

by cros

Brianmoooore wrote:They aren't likely to have gone missing. They were only fitted to higher specced cars.

Never knew that!

by cros

$2.39 according to that online ETK.

by cros

They duct the blower out under the front seats toward the rear passengers feet.

by cros

Zayyan wrote:

How come my M40 has the oil filler on the front?
Never see it there on other pictures.
A late production change or something? (It's a '94)

by cros

A ding to the arch is most likely a crease which won't pull. Filler is probably the only way to get it 100% again.

by cros

A dog bit the left rear passenger arch of mine over the weekend. Was doing a U turn in a farmyard and it sounded like the mud flap had grounded out. Just kept driving. Why couldn't the :cursin: have gone for the dangling, chewy & replacable flap instead?? Powerful bite too: 2 fang spaced dings and d...

by cros

Check the brakes for a stuck pebble or something (especially the metal backing plate).

Check that the brake pad anti rattle spings are where they should be too.

Could be lots of things really...

by cros

OK fair point, which one would have clocks without a code thingy then seems a bit bizzare considering all the rest have them. Was going to interrupt :duck: Really early ones had the coding plug in the back of the tacho guage. Usually VDO ones with tapering green bands on the tacho face. You can see...

by cros

Demlotcrew wrote:I still dont know why BMW put the filler cap on the wrong side of the engine on the M40s

Strange. It's on the other side of mine.

by cros

Don't think the E30 OBC will do it as such. You can set a limit and listen for the gong, but it's not a readout. True, it should be a good indication of speedo error. The 8 series OBC test mode gives a live readout via the ABS sensors :cool: About the OBC error: the diff gives 9 pulses per wheel rev...

by cros

BMW Silber is a light grey. Lighter than the carpet. Like the grey used in Windows for the taskbar and window backgounds.

That kick panel colour is for E30s that have light grey handbrake console, glove box & dash(?). M3 and motorsport cabs only I think.

by cros

I've noticed that too! The center console (with the heating controls) also seems to come in subtly different shades. Probably just down to age and how much polishing/silicone/cleaning the part has seen. My second dash was light grey compared to the original one. It got much darker after being wiped ...

by cros

Yes i know that :wink: , i just mean i havn't seen listings for iS after market suspension, only 51mm struts for the heavier 6 pot, so what do you use for the lighter 4 pot? Does that make any sense :mad: Mabye 4cyl Touring front bits and 6cyl saloon back bits? Probably more chance of finding iS af...

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