E30 Zone

Cheers Ross. I've shipped loads of stuff over the years and I've always felt it would be a shame if something got damaged in transit due to a lack of proper packaging and the few extra minutes that would take. I might have gone a bit over the top but it wouldn't have been any fun for either of us ha...

Shameless plug for my pnpMS in the bits for sale section...

From eyeballing the wrist pin centre to crown height between an M25B25 piston and an M54B30 piston...

Dunno but here's a picture of an M54B30 piston - if you take 5 mm off the top I would have thought you'll take the ring with it before too long.

Some info in this thread - http://www.e30tech.com/forum/showthread.php?p=1140604

the "standard" build is an M52B28 crank with 130mm rods - using the 135mm rods you would need to machine the tops of the pistons considerably (5mm?) to keep them from contacting the head. I don't think it can be done - there wouldn't be enough material left to hold the first compression ring.

How much are you skimming off the block?

I would do a compression or leakdown test before taking it apart; that will confirm what, if anything, needs refreshing. Unless you just want to do it for the fun of it.

Any news?

Thanks, all understood - I learned a fair bit about boost levels, turbos, overheated intake air and intercoolers as owner of a twin turbo 911. My M20 application in a Z1 has space constraints and I'm also not looking for mega horsepower.

What boost level and subsequent power could one get without an intercooler?

I believe the 25 6E is the higher compression pre-cat engine and the 25 6K is the lower compression catalytic converter engine,

I believe M52B28, M52TUB28 and M54B30 rods are all 135mm.

Metric Mechanic sells 2 different engine kits for the 89.6mm crank. The lower spec one uses custom pistons with 135mm rods from an M3; the higher spec one uses custom pistons with custom 138mm rods.

I would offer that if you're going with custom pistons why not go with an 89.6mm crank to maximise the potential that custom pistons can provide?

What pistons are you using?

A bit of speculation on my part as I haven't done the maths - did Alpina increase the CC size for performance reasons or to reduce the CR as they were using a longer stroke crank with the same rods?

bss325i wrote:Would you like a part number?

Yes please!

And I presume KS = KolbenSchmidt, the piston manufactuer, as opposed to Mahle?

I think they all look roughly the same. See pages 5 and 9 of http://www.metricmechanic.com/pdfs/metr ... ooklet.pdf

HairyScreech wrote:what we need to look at doing possible is getting some properly shaped forged pistons made for the strokers, with a higher pin, 10:1 cr with the bowl in the right place, short skirt or even slipper skirt.

Metric Mechanic sells these - for $1200/set.

Excellent thread! Looks as though you used an M52TU crank - please measure the overall outside diameter - it would be useful to compare it to others. Here's a photo of 3 cranks. Top to bottom they're M54B30, M52B28 and M20B25. http://i797.photobucket.com/albums/yy260/LogMeInRemoteUser/IMG_1820.jpg T...

What are the the places on a touring to look for rust? It seems the scuttle on all the variants plus the obvious wings and wheel arch lips and the hatch on the touring. Anything else to look out for? tia

What knock sensor are you using?

I know somebody in Germany that can supply the parts for a 3.1. Can you elaborate or provide more info via PM please? The best option seems to be using the pistons from Metric Mechanic - while not exactly cheap at $1200/set they allow use of 135mm rods from BMW and MM has a good rep. Would be inter...

I spent some time looking into this - expect to spend £4K+ unless you fabricate brackets etc yourself.

dizzy = distributor

At that price you must mean the whole dizzy?!

Ostrich 2? http://www.moates.net/product_info.php?products_id=169

IAt the moment I run a BBTB, a ported inlet manifold and Miller MAF conversion. I dynoed before and after. After the MAF conversion, BBTB and ported inlet manifold, things are smoother and with more power from earlier on the results are interesting: between about 4300-5800rpm there are instances wh...

The throttle position sensor however is an open question. Is it running properly? Is it set in the right postion? How would I know. Shamelessly plagiarised from the E30 idle FAQ: Now before we begin to re-install the boot and other items, we will need to check the throttle switch on the bottom of t...

Did you change the throttle position sensor? Check that it's installed correctly and providing the WOT value at WOT. Is the TB opening all the way when the pedal is floored?

Short stroke, large bore is usually the basis for a high revving engine but not with the heavy stock internals and cast crank. Doesn't make much sense; go with a 2.7 or 2.8 as there's no replacement for displacement.

Not sure you can - EWS on recent engines is very well integrated into the ECU. You may need a known EWS/ECU/key combo.

I had the chance to buy a 3.0 crank from an N52 engine (sucessor to the M54) with a cracked timing chain cover for â‚¬2 until I realised the main bearing journals are smaller than the M20/50/52/54 engine so wouldn't work. Shame about that!

I'm not sure the age of the design is relevant - the basics to achieving good flow have not changed since year 1.

325msport - all true but good to know which ones are for show and which are for go

Search found 42 matches

Re: phelix

Re: MegaSquirtPNP

Re: 3.0 litre stroker

Re: 3.0 litre stroker

Re: m52b28 crankshaft

Re: 3.0 litre stroker

Re: Machining the webs on a 2.8 TU crank?

Re: piston rings/engine fresh up

Re:

Re: new project M20 supercharged advise needed

Re: new project M20 supercharged advise needed

Re: new project M20 supercharged advise needed

Re:

Re: Injectors for a 2.8 stroker

Re: Injectors for a 2.8 stroker

Re:

Re:

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E30 touring rust spots

Re: Knock Sensor Mounting on 325 Turbo

Re: 3.1l stroker kit

Re: Super-charged m20 2.5

Re: M20 to distrubutorless ignition?

Re: M20 to distrubutorless ignition?

Re: M20B28 - motronic

Re: Very big bore throttle body?

Re: Now I am confused 18hp less today after an upgrade/downg

Re: Now I am confused 18hp less today after an upgrade/downg

Re: 2.6 Build.

Re: E30 Convertible with Diesel engine

Re: M54 3.0 crank into M20 block

Re: 6 Branch manifold, Hartage or BTBII

Re: 6 Branch manifold, Hartage or BTBII