Some pictures of my 87 Spider, 2.0 Turbo, 230whp STOCK engine - Alfa Romeo Bulletin Board & Forums
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post #1 of 31 (permalink) Old 08-11-2019, 03:56 PM Thread Starter
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Some pictures of my 87 Spider, 2.0 Turbo, 230whp STOCK engine

I thought I might share a few pics and details on my turbo Spider. Its a 1987 Graduate, furnished with 3/4s of a quadrifoglio body kit. It is powered by its original 2.0L twin cam, which has previously done 112,000 miles and has not been modified. The turbo setup is a custom job fabricated by me, using a Mitsubishi TD05-16G turbo on a SCH40 mild steel log manifold, a Hyundai sonata intercooler, and a Jeep throttle body on a custom intake plenum. The fuel system consists of a Bosch 044 fuel pump, AEM rising rate fuel pressure regulator, 4x 480cc/min primary injectors, and 4x 550cc secondary injectors. The ignition uses GM D585 coils from an LS small block chevy. All this is controlled by a Megasquirt MS3x ECU. It was tuned by me on E85 fuel, running 18.5psi of boost.
As of now, the stock driveline is holding up.
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1987 Spider
Stock Engine, Turbocharged, Megasquirt MS3x, Flex Fuel - 230whp
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post #2 of 31 (permalink) Old 08-11-2019, 04:04 PM Thread Starter
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More pics
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1987 Spider
Stock Engine, Turbocharged, Megasquirt MS3x, Flex Fuel - 230whp
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post #3 of 31 (permalink) Old 08-11-2019, 04:42 PM
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Pictures are great - but now we need video!

- - Eric
don't read this
~ 1984 Spider Veloce ~
- -~ 1981 GTV-6 ~
Mebane, North Carolina


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post #4 of 31 (permalink) Old 08-11-2019, 05:05 PM
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Nice car! I like those front wheel covers/wheels... Does Auto Delta sell something similar for a GTV6?
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post #5 of 31 (permalink) Old 08-11-2019, 07:07 PM
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Those front wheels! Great build. I second the video request.

~*~*~1986 Alfa Spider Graduate~*~*~
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post #6 of 31 (permalink) Old 08-11-2019, 07:36 PM
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Wow! 18.5psi boost sounds like a lot...is the 'boost' adjustable? I like what you've done w/your Graduate!

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post #7 of 31 (permalink) Old 08-11-2019, 08:08 PM Thread Starter
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Nice car! I like those front wheel covers/wheels... Does Auto Delta sell something similar for a GTV6?
These are turbofan wheel covers, which started out as BBS replicas, that I painted and made the decals for. They were popular on racing cars in the 80's, but were banned by many sanctioning bodies. Their primary function is to cool the brakes, but they serve a secondary aerodynamic function by creating a low pressure zone under the car. While the brake cooling function can't be argued, the aero function is minimal in this case because my spider simply is not low enough to benefit. I just happen to like the way they look.
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1987 Spider
Stock Engine, Turbocharged, Megasquirt MS3x, Flex Fuel - 230whp
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post #8 of 31 (permalink) Old 08-11-2019, 08:16 PM Thread Starter
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Originally Posted by SpiderSlam5 View Post
Wow! 18.5psi boost sounds like a lot...is the 'boost' adjustable? I like what you've done w/your Graduate!

Regards
Yes, boost is controlled electronically by the ECU. I am using throttle position and RPM to modulate the boost via a boost control table in the ECU, which controls a solenoid regulating pressure going into the wastegate. For example, at 5500 RPM and 80% throttle I would only be able to make 12 psi of boost, but at the same RPM and 100% throttle I can make 18psi.

1987 Spider
Stock Engine, Turbocharged, Megasquirt MS3x, Flex Fuel - 230whp
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post #9 of 31 (permalink) Old 08-11-2019, 08:19 PM Thread Starter
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Pictures are great - but now we need video!
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Originally Posted by PocketAce View Post
Those front wheels! Great build. I second the video request.
Dyno video here:
(had to reach my 10 post minimum for posting links)

1987 Spider
Stock Engine, Turbocharged, Megasquirt MS3x, Flex Fuel - 230whp
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post #10 of 31 (permalink) Old 08-11-2019, 08:31 PM
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Quote:
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Quote:
Originally Posted by EB101 View Post
Nice car! I like those front wheel covers/wheels... Does Auto Delta sell something similar for a GTV6?
These are turbofan wheel covers, which started out as BBS replicas, that I painted and made the decals for. They were popular on racing cars in the 80's, but were banned by many sanctioning bodies. Their primary function is to cool the brakes, but they serve a secondary aerodynamic function by creating a low pressure zone under the car. While the brake cooling function can't be argued, the aero function is minimal in this case because my spider simply is not low enough to benefit. I just happen to like the way they look.
I'm definitely familiar with the Porsche 911/935 BBS turbo wheel fans of yesteryear... I always liked them and when a car is in motion they look excellent.. IMO
Yours look very nice, good job!
I was hoping someone was actually making them, too bad... The original Alfa GTV6 wheels slightly remind me of them with the large flat surface area, just no fan part for the brake cooling.
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post #11 of 31 (permalink) Old 08-11-2019, 08:46 PM
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my '84 GTV6 wheels
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post #12 of 31 (permalink) Old 08-11-2019, 08:46 PM
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Impressive!

Ed Prytherch
79 Spider
76 Suzuki GT500
2011 Jaguar XKR

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post #13 of 31 (permalink) Old 08-12-2019, 07:27 AM
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I see you still have the VVT solenoid on the head. Are you running aftermarket cams?

~*~*~1986 Alfa Spider Graduate~*~*~
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post #14 of 31 (permalink) Old 08-12-2019, 10:45 AM
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E85

Akaxauto
Nice job. That e85 sure works well on a turbo. You having any trouble with cold start up?
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post #15 of 31 (permalink) Old 08-12-2019, 05:29 PM Thread Starter
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Originally Posted by PocketAce View Post
I see you still have the VVT solenoid on the head. Are you running aftermarket cams?
Standard cams. The actuator was only to test the VVT on the dyno, it was boost activated at 5psi. Unfortunately the VVT can only advance the cam, not retard it which is what you want, in theory, for a turbo motor. Advancing the cam using the standard setup with the boost actuator made a negligible difference on the dyno. I left it in the fill the space, it is not hooked up anymore.

1987 Spider
Stock Engine, Turbocharged, Megasquirt MS3x, Flex Fuel - 230whp
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