1.8 or 2Ltr engine which is better? - Alfa Romeo Bulletin Board & Forums
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post #1 of 17 (permalink) Old 06-21-2010, 06:18 AM Thread Starter
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1.8 or 2Ltr engine which is better?

Hi.. I have a 67 Giulia Super Ti 1.6ltr and I am thinking about an engine swap at some time in the future... Is there any general rule as to which motor is better or more enjoyable in the 105's?...
Thanks
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post #2 of 17 (permalink) Old 06-21-2010, 06:27 AM
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Torque is what "street" performance is all about.

2 L with RJ cams=

Bob,
Avatar is the 68 Super, bought new.
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post #3 of 17 (permalink) Old 06-21-2010, 08:10 AM
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what i know is that the 1750(1.8) is a more rev happy engine in comparison to the stock 2l ,what is best is a personal choice. when the engines remain stock the 1750 is almost as powerfull as a 2l. the choice is between sporty or lazy
when you want to tune the engines......than the 2l, but then again go straight for a twinspark!
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post #4 of 17 (permalink) Old 06-29-2010, 02:39 PM
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If performance is the objective, there is no substitute for cubic capacity, 2.0 litre is the answer.

If it is for a road driving car, and the experience is more important, and you have a short diff, 1.8 litre is a smoother engine and makes for a fun drive.

Jason oo=v=oo 1983 GTV6 2.8 litres
Ghosts of alfas past: 1974 2000GTV, 1978 2000GTV, 1988 33IE, 1989 75TS.
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post #5 of 17 (permalink) Old 06-30-2010, 04:12 AM
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Please let me know if you wish to sell your Ti Super engine.
Jim
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post #6 of 17 (permalink) Old 06-30-2010, 07:20 AM
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Most of British Columbia is mountainous and my 2 L 101 Spider has been a good performer.

The head is good, but on a block that had 45,000 miles on it so the rev limiter is set at 6500.

The 2 L going into the Sprint build is fresh from top to bottom and with the RJR cams it will produce some 155 lb/ft over a broad torque curve. Prolly around 160 hp.

It will pull smoothly in fourth from 1800 rpm right up to a rev-limited 7000.

The comparison has been the Honda S2000 which puts out 162 torque at 6500 and 225 hp at 7500, with a weight of 2900 lbs.

The 101 Sprint weighs less than 2100 lbs.


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post #7 of 17 (permalink) Old 06-30-2010, 12:32 PM
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I've seen a very well built 1750 put the hurt on an equally well built 2L on the track. It was one of the best races I have ever seen. The 2L happened to be built by Jon Norman, and was driven by him as well. I'd say if you build the 1750 right, its every bit as good as a 2L.

I'm looking to go with a 1750 in my Sprint.

Will

1959 101.02 Sprint AR1493*20198 (project) 1969 Datsun 2000 roadster
1988 BMW E30 M3
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post #8 of 17 (permalink) Old 06-30-2010, 02:57 PM
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Will

When will your Sprint be completed?

Bob,
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post #9 of 17 (permalink) Old 06-30-2010, 04:18 PM
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Quote:
Originally Posted by Subtle View Post
Will

When will your Sprint be completed?
Hahahahahahaha... At the rate I'm going, no time soon. I've been able to work on it once since the beginning of February, no one has really been interested in the 1300 Veloce long block, and I currently have no $ to put into it at the moment (street Alfa needs tires, track car needs an engine rebuild and tires, and I'm racing a 24 hrs of Lemons car.) The body work is making slow progress, the grills all look like they could be for the car. I did get a 101 series 5 spd, the dash top is redone, and the interior is all out of the car aside from the passenger seat that has a stuck screw holding it in (I haven't put much effort into removing it lately.)

I might go do some work on it this weekend, we'll see. Here is a photo album of the work in progress...
http://www.facebook.com/album.php?ai...0&l=4273bb8187

Will

1959 101.02 Sprint AR1493*20198 (project) 1969 Datsun 2000 roadster
1988 BMW E30 M3

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post #10 of 17 (permalink) Old 06-30-2010, 04:37 PM
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Give it your best--the Lemons must be fun.

Mine should be completed by.....mid August.

The shop has scheduled to start then on an Elva race car.

Bob,
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post #11 of 17 (permalink) Old 06-30-2010, 05:56 PM
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Quote:
Originally Posted by Subtle View Post
Most of British Columbia is mountainous and my 2 L 101 Spider has been a good performer.



The comparison has been the Honda S2000 which puts out 162 torque at 6500 and 225 hp at 7500, with a weight of 2900 lbs.


thats not entirely accurate.... i have a dynoed rhp 130hp = 160hp 2L nord.

its still light years from a S2000 motor that spins to 9k stock 240hp.

i hear tons of good thing about RJ equipped motors... has anyone ever dynoed one and post up on the bb?

anyhow i have a soft spot for the 1750 motor also

cheers

db

Last edited by davbert; 06-30-2010 at 06:00 PM.
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post #12 of 17 (permalink) Old 06-30-2010, 09:38 PM
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The Nord engine is more than a few years old, and my checking of the S 2000 specs was 4 years ago.

Bob,
Avatar is the 68 Super, bought new.
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post #13 of 17 (permalink) Old 06-30-2010, 10:04 PM
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yes...thats why i didnt get the phrase "the comparisons has been..."

there really is no comparisons between the two other than they both are great contemporary engines in its day. but please...apple to apples.

warm regards

Db
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post #14 of 17 (permalink) Old 07-01-2010, 07:02 AM
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The comparison I enjoy is that the old Nord in a warm street tune can put out almost as much torque as the S 2000. At 5000 rather than at 6500 it makes for happy motoring.

Particularly when a 101 weighs in at some 800 pounds less.

There is no doubt that with the HP of the S 2000 that it is a much faster car, but it makes for an interesting comparison when ascending mountain passes on an old, rough and twisty two-lane.

Been there--four years ago when an S 2000 was the sweep car on a gaggle of 101s.

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post #15 of 17 (permalink) Old 07-01-2010, 09:45 PM
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i was out at buttonwillow 2 weeks ago and a friends S2K with a well used 180,000 miles stock motor turn a few sub 2 minutes lap quickest being at 1:58's running the #13CW configuration. he did cheat and lighten the car down to 2600lbs. all S2K have about 240hp, his was a first year model.

ive track a few S2k and never notice the lack of torque one bit as long as you keep
stirring that shifter. street driving now thats another story.


anyhow happy Canadian day

sorry for the hijack

db
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