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> Out with the old...in with the new...Britain's Racecar Development, Subaru Engine, Lotus Suspension! Time to go racing!
Zaney
post Feb 26 2011, 06:13 PM
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Brit,
In your ECU and wiring install, could you expand what the rear fuses are used for? I am trying to finalize the suby wiring on my engine with the stock ECU and would like to cross reference with your wiring.

BTW, your setup is amazing! Thanks for all the pics!

Cheers (IMG:style_emoticons/default/beer.gif) ,
Nate
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Britain Smith
post Feb 26 2011, 06:20 PM
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Hey Nate...I need to update my diagrams for the stuff that I have added, but I can send all my diagrams to you if you would like.

From memory, the top 2 fuses are +12V from the battery and send power to both the ECU and the main relay. The bottom 3 fuses are switched 12V from the ignition switch and go to the ECU, coils, VSS (vehicle speed sensor), and NPS (neutral position switch).

-Britain
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69dblcab
post Feb 27 2011, 09:16 AM
Post #183


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Britain,
In regards to the turbo.
If you are feeding High pressure oil to the bearing and then dumping that to the Low pressure sump. Does it really matter if it does not gravity drain.
The only possible issue as I see it would be coking the bearing in the turbo due to no cool down time prior to shut down.

The leak I understand just not the added complication of scavenge pump and its associated plumbing.
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J P Stein
post Feb 27 2011, 09:57 AM
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QUOTE(69dblcab @ Feb 27 2011, 07:16 AM) *

Britain,
In regards to the turbo.
If you are feeding High pressure oil to the bearing and then dumping that to the Low pressure sump. Does it really matter if it does not gravity drain.
The only possible issue as I see it would be coking the bearing in the turbo due to no cool down time prior to shut down.

The leak I understand just not the added complication of scavenge pump and its associated plumbing.


I would tend to agree with you, however, I'm not expert on turbos, Subies, and their innerworkings. Brit's gurus on this seem to think that I could result in blown turbo seals. I am one skeptical, cynical SOB and have seen enough "gurus" on the Porsche side of the house to last me a lifetime. Without empirical info I can't say they're fulla crap so to be extra safe the smart money is to go with them....untill ya *know* different......and , of course, they are not spending my money. (IMG:style_emoticons/default/biggrin.gif)
I *think* part of the problem is the drain line he installed is not made to be pressurized.....even a little bit.
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Britain Smith
post Feb 27 2011, 11:17 AM
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QUOTE(69dblcab @ Feb 27 2011, 07:16 AM) *

Britain,
In regards to the turbo.
If you are feeding High pressure oil to the bearing and then dumping that to the Low pressure sump. Does it really matter if it does not gravity drain.
The only possible issue as I see it would be coking the bearing in the turbo due to no cool down time prior to shut down.

The leak I understand just not the added complication of scavenge pump and its associated plumbing.



You are correct, the drain line is a gravity drain. However, if the drain line is filled with oil then there is no where for the oil to gravity drain into. My issue is that the height of the turbo in relation to the oil level is marginal at best. Any situation where the oil level raises (i.e. when the accusump is opened, or the car is started on a downward angle) then the turbo will be filled with oil and could result in damage to the turbo. On a seperate note, the drain line I had made leaked and was not an ideal solution.

-Britain
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Britain Smith
post Feb 27 2011, 11:55 AM
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I am working to finish everything up before receiving the oil scavenge pump and getting this thing on the dyno.

First thing was to add a additional switch for the oil scavenge pump and while I was there, I added labels for the confused.

(IMG:http://www.914world.com/bbs2/uploads_offsite/a4.sphotos.ak.fbcdn.net-364-1298829325.1.jpg)

Shifter installed and functioning.
(IMG:http://www.914world.com/bbs2/uploads_offsite/a5.sphotos.ak.fbcdn.net-364-1298829327.2.jpg)

I installed a Hall Effect Sensor under the shifter and a magnet in the shifter to detect Neutral Position for the ECU. The red LED indicates that is it aligned.
(IMG:http://www.914world.com/bbs2/uploads_offsite/a6.sphotos.ak.fbcdn.net-364-1298829327.3.jpg)

Hall Effect Sensor installed on the CV to pick up Vehicle Speed.
(IMG:http://www.914world.com/bbs2/uploads_offsite/a3.sphotos.ak.fbcdn.net-364-1298829327.4.jpg)

In full droop, the axle doesn't hit the exhaust pipe. WIN!
(IMG:http://www.914world.com/bbs2/uploads_offsite/a6.sphotos.ak.fbcdn.net-364-1298829329.5.jpg)

ECU fully wired up and wires secured.
(IMG:http://www.914world.com/bbs2/uploads_offsite/a4.sphotos.ak.fbcdn.net-364-1298829329.6.jpg)

Oil filter sandwich plate with Oil Temp Sensor.
(IMG:http://www.914world.com/bbs2/uploads_offsite/a2.sphotos.ak.fbcdn.net-364-1298829331.7.jpg)

In-line water temperature sensor.
(IMG:http://www.914world.com/bbs2/uploads_offsite/a2.sphotos.ak.fbcdn.net-364-1298829331.8.jpg)

The scavenge pump and the associated AN lines and fitting should all be here by Thursday. That gives me a week to sort everything out before the dyno tuning.

-Britain
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McMark
post Feb 27 2011, 12:16 PM
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Where did you get your Hall Effect sensors? I like those with the LED.

(IMG:style_emoticons/default/wub.gif) Love the neutral sensor.
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Britain Smith
post Feb 27 2011, 12:21 PM
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Got the sensors from: http://www.digikey.com/

55110-3H-02-A-ND SENSOR HALL EFFECT W/LED PNL MNT
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Britain Smith
post Feb 28 2011, 03:43 PM
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Ah man it is frustrating to wait on parts to arrive (IMG:style_emoticons/default/smile.gif)

Guess I will go work on my site: www.where2race.com

-Britain
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jpnovak
post Mar 1 2011, 10:42 AM
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Britain,

Your project is really progressing nicely. You have given me new motivation to complete my GRM Challenge car. I was stuck at where to mount the ECU. I cut the rear trunk out of my car so the intercooler will stay in the stock location and flush up against the rear decklid. I am going to mount the ECU in the trunk in a plastic housing to protect it against the elements.

Where did you find the inline temp sensor? That looks like a nice piece.
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Britain Smith
post Mar 1 2011, 12:10 PM
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I got both the sandwich adapter and the inline water temp adapter from Prosport.

http://prosportgauges.com/water-temp-sende...se-adaptor.aspx

-Britain
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Britain Smith
post Mar 4 2011, 01:50 PM
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Got the Turbowerx scavenge pump and associated AN fitting in the mail yesterday and got them all install. Due to space limitation and rules around the size of holes allowing in the firewall, I chose to plumb this up using bulkhead fittings. The turbo drain is now connected on one end and pump oil back into the oil pan. Few wires to hook up and the system is working perfect.

(IMG:http://www.914world.com/bbs2/uploads_offsite/a2.sphotos.ak.fbcdn.net-364-1299268249.1.jpg)

(IMG:http://www.914world.com/bbs2/uploads_offsite/a1.sphotos.ak.fbcdn.net-364-1299268250.2.jpg)

Still working on understand the coolant system, for some reason I don't think I am getting water to circulate properly. I will troubleshoot more this evening.

-Britain
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Randal
post Mar 4 2011, 01:56 PM
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Pretty cool Britain. What a huge job! But on your first run it'll all be worth it.
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J P Stein
post Mar 5 2011, 06:28 PM
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Watched Brit drive the shitbox (or whatever he's calling it) up and down his street today. With the tall first gear (F) & light flywheel he kilt it 2-3 times trying to get it moving (IMG:style_emoticons/default/biggrin.gif) .....when he finally got it the tires were chirping. A few half throttle pases down his street left loooong black marks when the turbo kicked in.

He has a couple problems to solve, but it's stout.....oh, excuse me.....it's AWESOME!!! (IMG:style_emoticons/default/pray.gif) (IMG:style_emoticons/default/pray.gif) (IMG:style_emoticons/default/wub.gif) (IMG:style_emoticons/default/piratenanner.gif) ...he said I wasn't excited enough.
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JRust
post Mar 5 2011, 07:36 PM
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I can't wait to see the video (IMG:style_emoticons/default/drooley.gif)
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Britain Smith
post Mar 5 2011, 07:45 PM
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Alright, world premier. The car is officially off jackstands and driving under it own power. The throttle is a light switch, the acceleration is unbelievable, and the hydraulic clutch assembly is perfect. Gotta fix a water leak on the coolant line coming out of the turbo and need to determine why so much oil is coming out of the muffler...most likely due to the issues I had with the turbo drain or overfilled from the accusump. Either way, it will be ready for the dyno on Monday.

Check out the video...

http://www.youtube.com/watch?v=Cbhc_2y2lYU

https://www.youtube.com/watch?v=Cbhc_2y2lYU


-Britain
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Britain Smith
post Mar 5 2011, 07:51 PM
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BTW, that wasn't even full throttle in the video...I tried full throttle once and the back end jumped out on me...perfect!

-Britain
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AndyB
post Mar 5 2011, 07:57 PM
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(IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/pray.gif)
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Rand
post Mar 5 2011, 08:12 PM
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Now it is the "oh shit" box.
Or you could name it after the expletives the neighbors up and down the street shout as you razzzz by. (IMG:style_emoticons/default/biggrin.gif)

LOVE it. Congrats man. Awesome to see it running. Hope dyno Monday goes well.

(IMG:style_emoticons/default/smilie_pokal.gif)
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DanT
post Mar 5 2011, 09:29 PM
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JP didn't even need to light up.....just inhale (IMG:style_emoticons/default/biggrin.gif)

nice job Brit....no mosquitoes in your neighborhood today. (IMG:style_emoticons/default/driving.gif)
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