Series 3 Engine Upgrade Recommendations? - Page 2 - Alfa Romeo Bulletin Board & Forums
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post #16 of 23 (permalink) Old 03-23-2019, 04:21 PM
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Vin wrote:
Buy a Honda S2000.



According to Wiki the claimed peak torque for an S2000 is 163 ft-lb at 7500 rpm. My 2L spider made 166 ft-lb at 5600 rpm. I would expect that the neck snapping sensation is similar.
I'd be interested to know what it cost you to achieve those gains and if you did any of the work yourself, factor in a cost of having that work done in a shop because some of the work may be beyond the comfort level and capabilities of some of us?

Mike

'87 Quadrifoglio
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post #17 of 23 (permalink) Old 03-24-2019, 02:54 PM
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I'd be interested to know what it cost you to achieve those gains and if you did any of the work yourself, factor in a cost of having that work done in a shop because some of the work may be beyond the comfort level and capabilities of some of us?
You've just described a fundamental dividing line that's so readily visible here on the bb and within the larger Alfa community. If you can do your own engine work, or even most of it, then the process of building a hot-rod Alfa like Ed has is just tremendous fun. While old Alfa 4 cylinder engines may seem like antiques or relics when compared to modern designs, they are in fact quite maliable and can be made to produce respectable horsepower. All of this is approachable and fun to do if you can do the work yourself. But, if you can't do the work yourself, the cost will easily run into the thousands and thousands of dollars. If that's the case, you're better off searching for and then buying a car that's already built. Alas, however, if you watch BAT auctions, ready built resto-mod Alfas are getting expensive.

Jim . . . '72 Super 1300, '70, 1750GTV, 2nd series,
'62, Lancia Flaminia Zagato3c, 2nd series
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post #18 of 23 (permalink) Old 03-24-2019, 04:10 PM
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Originally Posted by alfaparticle View Post
Vin wrote:
Buy a Honda S2000.



According to Wiki the claimed peak torque for an S2000 is 163 ft-lb at 7500 rpm. My 2L spider made 166 ft-lb at 5600 rpm. I would expect that the neck snapping sensation is similar.
Went for a drive in a S2000. The earth moved...seriously.

Regards, Alberto
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post #19 of 23 (permalink) Old 03-24-2019, 04:38 PM
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My S3 was found to be making metal, and the engine is being rebuilt.
Ah ha! And I assume that's why the oil pressure relief valve was jamming. Well, a total rebuild is the worst case outcome, but at least you have diagnosed your problem.

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I'm having it balanced, adding mild cams and a '74 2-piece header, and switching to an electric fan.
Those modifications won't turn your S3 into a rocket ship, but given that you need to pass emissions, it's probably all you can get away with.

Jay Mackro
San Juan Capistrano, CA

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post #20 of 23 (permalink) Old 03-24-2019, 05:49 PM Thread Starter
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Hi Jay -

"Ah ha! And I assume that's why the oil pressure relief valve was jamming. Well, a total rebuild is the worst case outcome, but at least you have diagnosed your problem."

Yes. The PRV and all the bearing shells are scored. One cam bearing cap was missing bits from the working surface and had voids or bubbles in the metal. The filter pleats and sump oil had little bits of aluminum.

"Those modifications won't turn your S3 into a rocket ship, but given that you need to pass emissions, it's probably all you can get away with."

I'll be happy as long as there's a definite increase in pickup.

David OD
Laguna CA
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post #21 of 23 (permalink) Old 03-24-2019, 08:04 PM
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May I ask what brand of oil filter was on the car?

It's Giuseppe's giubos, not Guido's guibos, on my 78 Spider and Sport Sedan
REFRESH CONNECTIONS BEFORE REPLACING COMPONENTS
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post #22 of 23 (permalink) Old 03-24-2019, 08:27 PM
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Changing the exhaust manifold will most likely increase the NOx emissions.

Ed Prytherch
79 Spider
76 Suzuki GT500
2011 Jaguar XKR

A little government and a little luck are necessary in life, but only a fool trusts either of them. - P.J. O'Rourke
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post #23 of 23 (permalink) Old 03-24-2019, 09:20 PM Thread Starter
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Mahle.
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