Re: [DML] Super Charged/EFI

[Martin Gutkowski <martin@xxxxxxxxxxxxxx>]

Hi Steve

Yeah, we're "lucky" but the snag is that it only works if you're going 
to use the stock ECU as the trigger wheel is bizarre. With the 25 turbo, 
even if I had an ecu, I wouldn't want to use it as it uses a speed sense 
to limit boost in low gears, has a top end of under a bar of boost and I 
don't have the IACV valve for wastegate control (and don't need it with 
the size of the D's rear tyres). It also uses an idlespeed mixture 
control valve. The ECU for the Alpine A610 would be good but is set up 
for a 3 litre lump. I looked at Electromotive thanks to your site but 
the price put me off big-time. I was thinking of doing exactly as you 
with the trigger wheel but spacing out the compressor, water pump 
pulley, alternator pulley and ac idlers out by 1/8" to accommodate the 
trigger wheel, but the SDS system just uses magnets on the pulley - much 
easier, and although it's sneered at a little in the TEC3 manual, I 
don't see that it will be much less accurate- perhaps a tiny fraction, 
but they (say they) get around it by making sure they use decent coil 
packs with a good duration on the plug.

Quick question for you: are you using full sequential ignition? It's 
completely unnecessary (the Renault setup uses wasted spark) but it 
occurred to me in the pub just now (very condusive to clarity of 
thought!) that my RPM signal is going to be 2x what my Rev counter wants 
and will screw up the idlespeed system as well as the rev counter. On 
the SDS there's no idlespeed control but the idlespeed valve on the R25 
is unsurprisingly identical to the DeLorean's so I can just use a idle 
microswitch (handy therefore that the throttle pot incorporates one 
anyway!) and the original system.

Just in case there're still other people reading this thread and haven't 
yet fallen asleep, I've put some pics of my engine at the following URL. 
I took these shots mainly so I had some record of how everything came 
apart. Yes it's really dirty - it sat in this guy's back garden for 2 
years but internally it's as sound as a pound with only the timing chain 
guides showing any real wear. I'm going to have everything tested anyay 
but I expect the crank to be spot on - the bearings are all still pearly 
white and the bores aren't scored. This engine was very much de-tuned 
for the 25 Turbo

http://www.delorean.co.uk/turboprv.zip

One of the photos shows the flywheel and you can see it's identical to 
the DeLorean's except for the trigger wheel

Martin

Steve Stankiewicz wrote:

>>    
>>
>That's where you've got one up on us here in the
>States.  With no access to that bellhousing, I went
>through the trouble of carefully trimming the trigger
>ring off of the Eagle's automatic flexplate, indexing
>it, adding tabs and attaching it to the Delorean
>flywheel, then adding a pickup mount on the Delorean
>bellhousing only to bail out on the whole system and
>go with the aftermarket fuel management system.
>
>Can't wait to see how your setup turns out!
>
>If you need any photos or measurements off of the
>Eagle engines, just let me know.
>
>=====
>Steve
>



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