Aggressive 2.0 Street Motor

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kenncarp
Posts: 72
Joined: Mon Aug 27, 2012 9:58 pm
Your car is a: 1979 Pininfarina 124 Spider
Location: Little Rock, AR

Aggressive 2.0 Street Motor

Postby kenncarp » Wed Mar 07, 2018 2:25 pm

I am creating this post to share my journey in putting together my dream motor. After 2 months of hard work, I have finally gotten my motor back from the race shop in Dallas, where a new friend of mine, prepped, and advised me in building this 2.0 for my '79. After discussion with him, I found custom Venolia high compression pistons were the key. Already having a blown racing motor, I got to steal some goodies, and I am going to list the parts I am installing and using on this build.

10.5 CR Venolia Pistons
Total Seal rings
Crane cams (I will post specs later)
Crower Trimetal Rods
Dual 40IDF Spanish Webers
5lb lightened flywheel
Volumex Trimetal Main bearings
King rod bearings
Shaved Auxillary shaft
2.0 head with 5 point deeper valve job (Stock Hardened Steel Valves)
Iskyderian Valve Springs
Ceramic coated oil pump
4-2-1 manifold
Msd Soft Touch rev limiter

I am extremely excited to get this thing running, but am taking my time on the build. I currently have all 4 pistons installed, and ready to put head on, but am waiting for the dowels shipped from Dallas. I would greatly appreciate any feedback, tips, or opinions on this! This is my first high performance engine build, and I have so much to learn.

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1979 Fiat 124 Spider (Red and Black Restoration)
1980 Fiat 124 Spider (Red parts Car/Autocross car)
1986 Toyota Tercel Wagon

17 Year Old Automotive Mechanical Engineer

cormac
Posts: 123
Joined: Sun Jun 02, 2013 3:03 am
Your car is a: Fiat 124 spider 1976

Re: Aggressive 2.0 Street Motor

Postby cormac » Wed Mar 07, 2018 5:25 pm

Coolio 8) ...will watch your progress with interest

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wetminkey
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Your car is a: 1979 2000 Spider
Location: Ault, Colorado

Re: Aggressive 2.0 Street Motor

Postby wetminkey » Wed Mar 07, 2018 11:48 pm

Wow, dude! That is one pretty motor.
And I've built a few. V8s, though,...
Best of luck. I'll try to keep up with your thread.
Todd.
1988 Mazda RX-7
1979 Fiat Spider 2000
1978 3/4 ton Chev 4x4 P/U "FRANKENTRUCK"
1976 Camaro
1972 VW Superbeetle
1969 Ford F100
1968 Mustang coupe

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RRoller123
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Your car is a: 1980 FI SPIDER 2000
Location: SAGAMORE BEACH, MA USA

Re: Aggressive 2.0 Street Motor

Postby RRoller123 » Thu Mar 08, 2018 8:41 am

consider high voltage ignition too?
'80 FI Spider 2000
'74 and '79 X1/9 (past)
'75 BMW R75/6
2011 Chevy Malibu (daily driver)
2010 Chevy Silverado 2500HD Ext Cab 4WD/STD BED
2002 Edgewater 175CC 80HP 4-Stroke Yamaha
2003 Jaguar XK8
2003 Jaguar XKR
2021 Jayco 22RB
2019 Bianchi Torino Bicycle

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kenncarp
Posts: 72
Joined: Mon Aug 27, 2012 9:58 pm
Your car is a: 1979 Pininfarina 124 Spider
Location: Little Rock, AR

Re: Aggressive 2.0 Street Motor

Postby kenncarp » Thu Mar 08, 2018 10:37 am

RRoller123 wrote:consider high voltage ignition too?


I have a msd blaster II coil, and being a '79, the marelliplex ignition set up, which from what I have heard will be plenty sufficient for the build. What substitutes for higher voltage ignition is there? My racing buddy informed me the marelliplex paired with a heavy duty control module, and a blaster II coil will be just fine.
1979 Fiat 124 Spider (Red and Black Restoration)
1980 Fiat 124 Spider (Red parts Car/Autocross car)
1986 Toyota Tercel Wagon

17 Year Old Automotive Mechanical Engineer

cormac
Posts: 123
Joined: Sun Jun 02, 2013 3:03 am
Your car is a: Fiat 124 spider 1976

Re: Aggressive 2.0 Street Motor

Postby cormac » Thu Mar 08, 2018 12:02 pm

Some have gone the Computronix route

https://allisonsautomotive.com/products ... 24_and_131

bonsaiwino
Posts: 228
Joined: Sat Jul 13, 2013 8:10 am
Your car is a: 1979 Spider

Re: Aggressive 2.0 Street Motor

Postby bonsaiwino » Thu Mar 08, 2018 3:29 pm

What did you do about the original intake manifold?

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kenncarp
Posts: 72
Joined: Mon Aug 27, 2012 9:58 pm
Your car is a: 1979 Pininfarina 124 Spider
Location: Little Rock, AR

Re: Aggressive 2.0 Street Motor

Postby kenncarp » Thu Mar 08, 2018 4:29 pm

bonsaiwino wrote:What did you do about the original intake manifold?


I still have a single plane manifold with a 34 adf weber on it. Currently just sitting in the shed. I loved that manifold/carb setup, super reliable, and quick!
1979 Fiat 124 Spider (Red and Black Restoration)
1980 Fiat 124 Spider (Red parts Car/Autocross car)
1986 Toyota Tercel Wagon

17 Year Old Automotive Mechanical Engineer

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RRoller123
Patron 2020
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Posts: 8179
Joined: Sun Nov 13, 2011 2:04 pm
Your car is a: 1980 FI SPIDER 2000
Location: SAGAMORE BEACH, MA USA

Re: Aggressive 2.0 Street Motor

Postby RRoller123 » Fri Mar 09, 2018 6:48 am

I have the Computronics Ignition (~65KV), and the 4-2-1 is considered to be a pretty good header without going to wild, saves a few bucks with good performance. So I was told by the major vendor gurus here, and they should know!
'80 FI Spider 2000
'74 and '79 X1/9 (past)
'75 BMW R75/6
2011 Chevy Malibu (daily driver)
2010 Chevy Silverado 2500HD Ext Cab 4WD/STD BED
2002 Edgewater 175CC 80HP 4-Stroke Yamaha
2003 Jaguar XK8
2003 Jaguar XKR
2021 Jayco 22RB
2019 Bianchi Torino Bicycle

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Kevin1
Posts: 399
Joined: Tue Feb 17, 2009 8:55 pm
Your car is a: 1980 Spider 2000 FI
Location: Maine, USA

Re: Aggressive 2.0 Street Motor

Postby Kevin1 » Fri Mar 09, 2018 12:43 pm

I see you mentioned using studs instead of head bolts. Do consider a multi-media steel head gasket. Not cheap but way better than a stock item.

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kenncarp
Posts: 72
Joined: Mon Aug 27, 2012 9:58 pm
Your car is a: 1979 Pininfarina 124 Spider
Location: Little Rock, AR

Re: Aggressive 2.0 Street Motor

Postby kenncarp » Fri Mar 09, 2018 1:36 pm

Kevin1 wrote:I see you mentioned using studs instead of head bolts. Do consider a multi-media steel head gasket. Not cheap but way better than a stock item.


I am using not head studs, but uprated specialty head bolts, with a weird head, and tool that looks like a variant of a torx bit. The head gasket was about 100 dollars, and is slightly thicker than stock. It definantly looks far different than stock, I can upload a picture later.
1979 Fiat 124 Spider (Red and Black Restoration)
1980 Fiat 124 Spider (Red parts Car/Autocross car)
1986 Toyota Tercel Wagon

17 Year Old Automotive Mechanical Engineer

Nut124
Posts: 748
Joined: Wed Oct 25, 2017 6:39 pm
Your car is a: 1978 124 Spider 1800

Re: Aggressive 2.0 Street Motor

Postby Nut124 » Fri Mar 09, 2018 6:30 pm

Very cool!

Please tell more about these;

-Crane cams (I will post specs later)
-Crower Trimetal Rods

40IDFs? You might run out or carb at top end.

Are you planning on a test build to determine valve to piston clearances? I would recommend it.

I used play doh on the pistons at the valve cut out to determine both axial and radial clearances by turning the engine over.

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kenncarp
Posts: 72
Joined: Mon Aug 27, 2012 9:58 pm
Your car is a: 1979 Pininfarina 124 Spider
Location: Little Rock, AR

Re: Aggressive 2.0 Street Motor

Postby kenncarp » Fri Mar 09, 2018 10:17 pm

Nut124 wrote:Very cool!

Please tell more about these;

-Crane cams (I will post specs later)
-Crower Trimetal Rods

40IDFs? You might run out or carb at top end.

Are you planning on a test build to determine valve to piston clearances? I would recommend it.

I used play doh on the pistons at the valve cut out to determine both axial and radial clearances by turning the engine over.


Cam specs -

Intake: 246 duration .390 lift
Exhaust: 236 duration .370 lift

My machinist has a connection with crane, and had them make these. Same with the pistons, his exact specs and dimensions. He has set up so many 2.0’s with these venolias that the valve clearence is spot on.

Crower rods - I am not sure of the origin, I stole them from my racing parts motor, (long story), did some research and found they are trimetal, and worth new about 1500 bucks! They are super light, and beautiful, here is a picture

Image

The carbs are jetted and have previously been run on a similar setup, i have an AEM wideband so i can moniter if I do begin to lean out, dont think I will though. Im sure I will have to fiddle with some jetting.
1979 Fiat 124 Spider (Red and Black Restoration)
1980 Fiat 124 Spider (Red parts Car/Autocross car)
1986 Toyota Tercel Wagon

17 Year Old Automotive Mechanical Engineer

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nelsonj
Posts: 394
Joined: Thu Oct 14, 2010 5:37 pm
Your car is a: 1972 Spider 124

Re: Aggressive 2.0 Street Motor

Postby nelsonj » Fri Mar 09, 2018 10:45 pm

What are you targeting/guessing for HP (either wheel or block)?

Please keep posting and good luck.

Peace.
Out.
Image
Simi Valley, California
Spider 1800
Romans 10:9

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kenncarp
Posts: 72
Joined: Mon Aug 27, 2012 9:58 pm
Your car is a: 1979 Pininfarina 124 Spider
Location: Little Rock, AR

Re: Aggressive 2.0 Street Motor

Postby kenncarp » Fri Mar 09, 2018 10:48 pm

nelsonj wrote:What are you targeting/guessing for HP (either wheel or block)?

Please keep posting and good luck.

Peace.
Out.


The machinist has a dyno, and says he expects 150ish wheel once its all set up. That sounds a little high, and he swears by it, but we will see. I will let you know when i get it dynoed myself!!!
1979 Fiat 124 Spider (Red and Black Restoration)
1980 Fiat 124 Spider (Red parts Car/Autocross car)
1986 Toyota Tercel Wagon

17 Year Old Automotive Mechanical Engineer


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