Well... considering in 10 years I had zero overheating problems in the 1200 with a stock radiator and the stock engine fan, the original fan and an S13 radiator should be more than enough until you fit the L-series.

In Adelaide it tends to get hotter than it does in Melbourne so you shouldn't have a problem (yes - I was driving the 1200 in traffic last year in our 6 days over 46 degrees and it never even looked like overheating, although I was pretty hot in the driver's seat!)

As for the seeping leak... by principle you should just fix all leaks when you find them. Running out of coolant will cook your motor quicker than anything else.

I wonder where they routed the exhaust on that engine with the outlet of the turbo facing forward like that?

Also.. where does your air filter fit!

It would make for a pretty stealth installation... just fit a dummy blue air cleaner as a cover over the top of the box on the carb and have the inlet pipes coming in through the back. The cops would be scratching their heads

Great to see someone finally have a go at this one. I had been considering it too prior to selling my coupe.

Good luck with it, and I will look forward to seeing how it turns out.

looks a bit like a mini version of the Porsche 928 (not a Sigma!)




Good work. I would black out the panel between the tail lights so it's more like the original ZX, but up to you.

Yeah - but you see plenty of 'VL Turbo' LSD diff centres around for $300. Don't forget that the falcon utes also had the same centre too... they're not exactly rare.

If we're talking money being no object, how about the infinity indy V8 rear mounted! Based on a 4.0L version of the VH45 with 10500RPM & 700hp? lol... I guess they blow the 20k budget though weighing in at $90k USD.

Just to clarify for those not in the know... this is what the Z3M alloy diff cover looks like...

The e28, e36 compact & Z3 uses a similar case to the e30, and you can swap them all around relatively easily.

One thing you might want to look at for extra diff cooling is using the Z3 M coupe / M roadster backing plate on the diff as it has large cooling fins on it. See here...

http://forums.bimmerforums.com/forum/showthread.php?t=1017244

The other medium case diffs like the e34, regular e36 etc. you need to swap the centers into the e30 case, so the e36 M3 diff is not a direct substitute for the e30.

To increase the amount of lock from 25%, I am pretty sure that you add extra clutches to the LSD, but you would need to look into this further. Metric Mechanic in the states offers you pretty much all the info about different BMW diffs you need. You are using the medium case 188mm...

http://www.metricmechanic.com/pdfs/me ... -differential-booklet.pdf

I have an e30 320i, and am about to swap my diff which is why I have been looking into this stuff.

Good Luck

Luke

I have to agree here... the medium case BMW diff is a great choice that is available in a huge number of ratios (from around 2.7 through to 4.45!). You're right... an A15 is not ever going to break one of these (considering they run the same diff in the e36 m3).

Hi all

seeing as I have sold my coupe, it's also time to get rid of some 1200 parts that I won't be needing, so anyone in Adelaide (SA) interested, come round and grab 'em.

A12 4 into 1 extractors - some surface rust, but in good condition: $120.

2 good oval port A14 / 15 heads including valves / springs etc - both excellent condition (have been reconditioned at some point): $150 each.

Cheers
Luke