Performance 2L in a 73 Spider

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So Cal Mark

Performance 2L in a 73 Spider

Post by So Cal Mark »

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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klweimer
Posts: 550
Joined: Tue Mar 27, 2012 7:45 am
Your car is a: 1982 Spider 2000
Location: Arvada, Colorado

Re: Performance 2L in a 73 Spider

Post by klweimer »

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

Re: Performance 2L in a 73 Spider

Post by So Cal Mark »

I had to shorten it since the battery is under the hood on a 73
md88plt
Posts: 51
Joined: Fri Jan 22, 2010 12:57 pm
Your car is a: 1979 Fiat spider
Location: tennessee

Re: Performance 2L in a 73 Spider

Post by md88plt »

Very nice. Can you publish any dyno data?
So Cal Mark

Re: Performance 2L in a 73 Spider

Post by So Cal Mark »

I hadn't planned on dyno runs with it, that would be the customer's decision
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jwldane
Posts: 51
Joined: Sun Oct 23, 2011 5:00 pm
Your car is a: 1980 2000 Spider
Location: Blairsville GA

Re: Performance 2L in a 73 Spider

Post by jwldane »

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

Re: Performance 2L in a 73 Spider

Post by RRoller123 »

+1 on that! Interested. Any estimate as to how much parasitic loss the belt driven pump is contributing?
'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
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2003 Jaguar XKR
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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: Performance 2L in a 73 Spider

Post by Kevin1 »

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
Posts: 746
Joined: Sun Jun 04, 2006 7:30 am
Your car is a: 1971 FIAT

Re: Performance 2L in a 73 Spider

Post by chrisg »

I've always preferred the earlier final drives with the 2L.
Chris Granju
Knoxville, TN
'71 FIAT 124BS (pretty), '72 FIAT 124BC,'76 FIAT 128 Wagon(ratbeast), '85 Bertone X 1/9, '70 124BC (project), 79 X1/9 (hot rod in rehab), '73 124BS (2L, mean), '74 124 Special TC, '73 124CS, '73 124 Familiare
BEEK
Posts: 1833
Joined: Wed Mar 24, 2010 10:45 pm
Your car is a: 1975 Spider
Location: clermont fl

Re: Performance 2L in a 73 Spider

Post by BEEK »

the 73 should have a 10/43 final drive
Automotive Service Technology Instructor (34 year Fiat mechanic)
75 spider
, 6 Lancia Scorpions, 2018 Abarth Spider, 500X wifes, 500L 3 82 Zagatos. 82 spider 34k original miles, 83 pininfarina, 8 fiat spider parts cars
son has 78 spider
So Cal Mark

Re: Performance 2L in a 73 Spider

Post by So Cal Mark »

the car is VERY responsive
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michaelj
Posts: 85
Joined: Sun Dec 29, 2013 9:25 am
Your car is a: 1976 Spyder
Location: Mount Dora, Florida

Re: Performance 2L in a 73 Spider

Post by michaelj »

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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