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Old 12-11-2016, 03:43 PM
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ealoken
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Default Ealokens Porshe 951 ( uppdate on engine head And interior)

Hi, first i want to say thanks for all the help and good spirit in this forum

I have a 1986 951 that is getting a makeover.

Specs:

Vitesse stage 2 turbo
750cc injectors
40mm tial -WG
4" LR exhaust
Yellow adjustable konis
Turbo gearbox with LSD
Bigger swaybars.

This winter im installing:

Emu ecu engine management system with a new engine harnes, as i dont like 30 year old cables.
Weichers rollcage
8,5+10" azev a wheele
235/45-17 and 255/40-17 Toyo R888
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Last edited by ealoken; 02-20-2017 at 02:03 PM. Reason: Edit :)
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Old 12-11-2016, 11:09 PM
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944crazy
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Nice car.

How do you like the Vitesse Stage 2 turbo? How much boost do you run, and what rpm do you get full boost by? Does the boost decline close to redline? Got any dyno plots?
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Old 12-12-2016, 03:13 AM
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ealoken
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Originally Posted by 944crazy View Post
Nice car.

How do you like the Vitesse Stage 2 turbo? How much boost do you run, and what rpm do you get full boost by? Does the boost decline close to redline? Got any dyno plots?
Thanks

Well, its a bit laggy and old, im planing a 3L16V with another turbo in about 2 years.
But, i think getting rid of the old piggyback Vittesseracing ( wich is a SMT6), and installing a modern EMU Ecu will do a lot of respons.

Meaby the car can to 800 km to 80 L of gasoline, now i have been doing 500 km to 80L.
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Old 12-12-2016, 03:46 AM
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Oh, I wouldn't have thought that turbo is laggy. How laggy exactly? I'm asking because I'm considering the vitesse stage 2 as a future upgrade for my car.

500km is about all I get out of tank as well...though I am a bit of a lead foot.
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Old 12-12-2016, 03:53 AM
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ealoken
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Originally Posted by 944crazy View Post
Oh, I wouldn't have thought that turbo is laggy. How laggy exactly? I'm asking because I'm considering the vitesse stage 2 as a future upgrade for my car.

500km is about all I get out of tank as well...though I am a bit of a lead foot.
On cruising AF is about 10-11,5, schould be 13 ish with no boost.

Trackday use was 300km on 80L

So my engine is getting "washed" in fuel.
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Old 12-12-2016, 04:02 AM
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I aim for 15:1 on cruise... but I don't have a cat. Even with one, 14-14.7 is still plenty safe. Better gas mileage than stock. I never measured the AFR on the cruise portion of the stock tune but I'd imagine it's a little fatter.
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Old 12-12-2016, 04:08 AM
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ealoken
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No cat here either.
First i need to make the new engine harness, and make my rear seat delete plug, mount my Stilo intercom and then, in january go to my tuner
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Old 12-12-2016, 01:16 PM
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Your car should not run 10-11 AFRs while cruising. The software is configured to run 13.5-14.5:1 while cruising, and it uses closed loop.
Apparently there is something wrong with your setup, either the PiggiBack is tuned incorrectly, a bad ground (which is common) or a few more items to check. May be too late now, as you already pulled off the engine management.

The kit on your car is roughly 10-12 years old. The turbo you have is very fast spooling, but the rich AFRs and possibly the boost control method are hurting spool.

Good luck with your project.





Originally Posted by ealoken View Post
On cruising AF is about 10-11,5, schould be 13 ish with no boost.

Trackday use was 300km on 80L

So my engine is getting "washed" in fuel.
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Old 12-12-2016, 04:12 PM
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Originally Posted by fast951 View Post
Your car should not run 10-11 AFRs while cruising. The software is configured to run 13.5-14.5:1 while cruising, and it uses closed loop.
Apparently there is something wrong with your setup, either the PiggiBack is tuned incorrectly, a bad ground (which is common) or a few more items to check. May be too late now, as you already pulled off the engine management.

The kit on your car is roughly 10-12 years old. The turbo you have is very fast spooling, but the rich AFRs and possibly the boost control method are hurting spool.

Good luck with your project.
Hi, i tried to send you an email, do you have any specs on my turbo? compressor map?

Im taking the old out, i need a standalone.


thanks
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Old 12-12-2016, 06:02 PM
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Originally Posted by ealoken View Post
Hi, i tried to send you an email, do you have any specs on my turbo? compressor map?

Im taking the old out, i need a standalone.


thanks
Yes I replied to your email shortly after I received it. Your turbo will support 380-400rwhp with the proper octane. I recall you mentioned the car running 340-345rwhp on pump gas for the past 7-8 years or so.
With E85, race gas and/or water Methanol you can run more boost and make more power.
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Old 12-13-2016, 02:44 AM
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Originally Posted by fast951 View Post
Yes I replied to your email shortly after I received it. Your turbo will support 380-400rwhp with the proper octane. I recall you mentioned the car running 340-345rwhp on pump gas for the past 7-8 years or so.
With E85, race gas and/or water Methanol you can run more boost and make more power.
My email has eaten your reply, i think.

Thanks
im aiming for 380-400, yes the turbo was bought in 2007 from you
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Old 12-13-2016, 05:35 PM
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Todays evening in the workshop, got my brackets welded by a friend.
Got my vibrodamping installed, and some pictures of later goodies.






The bracket for my rollcage





Vibromats sound dampeing



Aquasump sylinder



Stilo intercom central.





WRC stilo headset
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Old 12-13-2016, 05:46 PM
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Vibromat work looks good.
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Old 12-13-2016, 06:05 PM
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ealoken
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Originally Posted by gruhsy View Post
Vibromat work looks good.

thanks, spent 3.5 hours on that, but i hope it will kill some sound.
Was 90db in 130 km/h inside the car.
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Old 12-13-2016, 06:10 PM
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wow thats actually pretty loud. 80db over 8 hrs is the limit exposure threshold at my work, and because sound is logarithmic 90 is freakin loud

For comparison the paint booth at my work which is running at this very moment....is 85 db inside.
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