RE: [DML] Control Pressure Regulator/Twin Turbos [long]

["Marc A. Levy" <malevy@xxxx>]

Are you asking about the hose that connects to the intake next to the pressure switch? If so, my Island engine also does NOT have that, but it is possible that this hose makes it way up to the dashboard for a vacuum/pressuregauge. On my car I have a hose attached to a nipple at the back of the left side (near the firewall) that goes to the gage. I don't know why it would also go to the canister, unless the nipple under the intake (behind the water pump, hard to see with the intake on but you can do it) is capped of,and connected to that "T"... Or even worse, the hose fell off of that nipple and the previous owner could not figure out where the hose went and justadded the "T" to get it going, if so you will run lean with air being sucked in to that hose connection.

I have though about modifying the fuel system, and that K-star (at quick glance) looks like it could be useful. However, if I were going to do all ofthat, I'd go for a full electronic fuel injection system like Jim (jwit6) discussed a few months back. Based on the work he did, that system could be easily configured (the computer is designed to) to work with the turbochargers. You will also get the added benefit of removing the stock air flow meter which I suspect is a *HUGE* restriction when the turbos start to pullair through it. And say BYE BYE to that 70's technology fuel system! I would have done this to my Island engine, but it is now sitting on my garagefloor with no plans to reinstall it. I have considered this type of modification to the Legend engine that will be going in to this car (if I ever get my transmission back! *EHEM*), but am torn between Performance VS "stock". I'd love to see a EFI Island TT, I expect it to have improved performance and reliability.



-----Original Message-----
From: Martin Gutkowski [mailto:webmaster@xxxx]
Sent: Monday, February 11, 2002 5:19 AM
To: dmcnews@xxxxxxxxxxxxxxx
Subject: [DML] Control Pressure Regulator/Twin Turbos [long]


Hi All,
<SNIP>
Secondly, On #2727's engine, there's a vacuum hose which apparently has 
no business being where it is. Dave Stragand very kindly supplied us 
with the Island documentation, and there's nothing in it about this 
particular hose. He confirmed there's no such hose on his engine.You can 
see it in this picture

http://www.delorean.co.uk/pictures/DCP02382.JPG

It's the the right of the centre of the picture, and comes out of the 
left hand manifold. This hose goes off into a T-piece and one of the 
connecting hoses disappears off into the frame at the far left of the 
engine bay (around the same place as the A/C hoses). The other hose is 
hanging off it loosely. There's about enough length to get it to the 
charcoal cannister but no apparent port or connection for it. Anyone any 
ideas? I've blocked it with a screw for now. What does the charcoal 
cannister do? Currently all three hoses on the diagram are connected.

Lastly, in talking to Dave Stragand, and reading up as much as I can 
about turbocharging (including picking the brains of firstly an engine 
tunng expert, and secondly a friend who has a raft of self-taught 
knowledge on turbocharging). The Island system on #2727 has no cats and 
employs these very simple pressure sensors on the left intake manifold 
to detect when the system's under boost and disconnects the lambda 
sensor, putting the lambda computer into "slightly-rich" mode. In other 
words, it's a cheap and cheerful way of putting more fuel in the 
cylinders when under boost. In my searching the web, I found this 
intriguing product and one of the comments from the tuning expert was 
"this would be very useful on a modified engine"

http://www.milford.ndirect.co.uk/kstar.html

Has anyone seen this product before?

#2727 does not have a knock sensor either, nor does/did it have a 
re-curved rotor arm (it needed replacing anyway). I think in combination 
with the K-star, the potential for fine tuning an Island twin engine is 
huge.

Best Wishes

Martin
#1458