Performance 2L in a 73 Spider

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So Cal Mark
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Performance 2L in a 73 Spider

Postby So Cal Mark » Sun Feb 26, 2017 2:36 pm

We're doing a 2L performance engine swap into a 1973 Spider. One of many custom features is an electric water pump which eliminates the thermostat and hp loss from the mechanical water pump. The engine features forged 10:1 pistons, 285 street cams, ported head with large valves, billet aluminum flywheel, billet aluminum crank pulley, billet aluminum adjustable cam gears, Computronix ignition and a 95amp alternator.
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Mark Allison
allisonsautomotive.com Fiat and Alfa Romeo parts and service. Performance parts our specialty!
Headers, ignitions, wheels, cams, flywheels
starsmark@hotmail.com 909-981-3566

klweimer
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Re: Performance 2L in a 73 Spider

Postby klweimer » Sun Feb 26, 2017 3:02 pm

Very nice Mark. What's going on with the cold air intake? It doesn't look like the one on your website.
Kirk

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So Cal Mark
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Re: Performance 2L in a 73 Spider

Postby So Cal Mark » Sun Feb 26, 2017 7:52 pm

I had to shorten it since the battery is under the hood on a 73
Mark Allison
allisonsautomotive.com Fiat and Alfa Romeo parts and service. Performance parts our specialty!
Headers, ignitions, wheels, cams, flywheels
starsmark@hotmail.com 909-981-3566

md88plt
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Your car is a: 1979 Fiat spider
Location: tennessee

Re: Performance 2L in a 73 Spider

Postby md88plt » Fri Mar 03, 2017 3:36 pm

Very nice. Can you publish any dyno data?

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So Cal Mark
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Re: Performance 2L in a 73 Spider

Postby So Cal Mark » Fri Mar 03, 2017 10:46 pm

I hadn't planned on dyno runs with it, that would be the customer's decision
Mark Allison
allisonsautomotive.com Fiat and Alfa Romeo parts and service. Performance parts our specialty!
Headers, ignitions, wheels, cams, flywheels
starsmark@hotmail.com 909-981-3566

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jwldane
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Location: Blairsville GA

Re: Performance 2L in a 73 Spider

Postby jwldane » Sat Mar 04, 2017 6:29 am

HI Mark,

Looks great.

Would love to hear more about the electric water pump install. I'm sure there any many of us out here that would love to get rid of the problematic thermostat and regain some extra HP in the process. Any hints, tricks or tips and resources would be appreciated.

Thanks
John

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RRoller123
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Re: Performance 2L in a 73 Spider

Postby RRoller123 » Sat Mar 04, 2017 6:52 pm

+1 on that! Interested. Any estimate as to how much parasitic loss the belt driven pump is contributing?
'80 FI Spider 2000 (rolling "resto")
'74 X1/9 (many years ago)
'79 X1/9 (fewer years ago)
'86 Jaguar XJ6 (2nd Hobby Car)
2011 Chevy Malibu (daily driver)
2010 Chevy Silverado 2500HD Ext Cab 4WD/SB
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Kevin1
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Re: Performance 2L in a 73 Spider

Postby Kevin1 » Tue Apr 04, 2017 5:15 pm

Does the 73 have a 4.10 rear? How do you find that combination is to.drive? With the built 2l it must be pretty responsive.

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chrisg
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Re: Performance 2L in a 73 Spider

Postby chrisg » Tue Apr 04, 2017 7:36 pm

I've always preferred the earlier final drives with the 2L.
Chris Granju
Knoxville, TN
'71 FIAT 124BS (stock, pretty), '72 FIAT 124BC,'76 FIAT 128 Wagon (rat rod), '85 Bertone X 1/9 (FI, efficiency machine) '70 124BC (project,project), 79 X1/9 (hot rod in rehab), '73 124BS (2L, mean), '74 124 Special TC

BEEK
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Re: Performance 2L in a 73 Spider

Postby BEEK » Tue Apr 04, 2017 8:14 pm

the 73 should have a 10/43 final drive
Automotive Service Technology Instructor (34 year Fiat mechanic)
75 spider
, (5)and # 6 is on the way. 76 scorpions New Scorpion 24k original miles (Silver)
2014 500L Daily driver

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So Cal Mark
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Re: Performance 2L in a 73 Spider

Postby So Cal Mark » Tue Apr 04, 2017 11:30 pm

the car is VERY responsive
Mark Allison
allisonsautomotive.com Fiat and Alfa Romeo parts and service. Performance parts our specialty!
Headers, ignitions, wheels, cams, flywheels
starsmark@hotmail.com 909-981-3566

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michaelj
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Re: Performance 2L in a 73 Spider

Postby michaelj » Wed May 03, 2017 7:17 am

RRoller123 wrote:+1 on that! Interested. Any estimate as to how much parasitic loss the belt driven pump is contributing?


I doubt its a lot, but these engines are so small every little bit helps. Its like "death by a thousand cuts". Every little "parasite" we can remove helps. For me though, I wouldnt even do fuel injection, it adds to much plumbing on top of the engine. I like the old school look of dual carbs, even though they can be a bit testy and are not as good for HP production as FI. The Mona LIsa dont look good with a mustache! LOL.


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