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post #1 of 9 (permalink) Old 08-10-2019, 08:21 PM Thread Starter
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New Motor

I kept my foot out of it until I didn't. Break in complete.


The passenger seat is 15 miles an hour faster than the drivers seat.

currently
2017 Giulia Q4
74 GTV restored daily driver
71 Berlina in 2L restored driver
the ones that got away:
1959 750 series Giulietta Spider Veloce
1962 Giulietta Spider normale
1965 Giulia Sprint normale
1972 GTV
1974 GTV
1974 GTV
1977 Spider
1974 Spider
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post #2 of 9 (permalink) Old 08-11-2019, 04:51 PM
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Wow! That engine seems like it pulls really well. Sounds great too!
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post #3 of 9 (permalink) Old 08-11-2019, 06:35 PM Thread Starter
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Thanks! It was a good 100 degrees when I shot that.

The passenger seat is 15 miles an hour faster than the drivers seat.

currently
2017 Giulia Q4
74 GTV restored daily driver
71 Berlina in 2L restored driver
the ones that got away:
1959 750 series Giulietta Spider Veloce
1962 Giulietta Spider normale
1965 Giulia Sprint normale
1972 GTV
1974 GTV
1974 GTV
1977 Spider
1974 Spider
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post #4 of 9 (permalink) Old 08-13-2019, 06:45 PM Thread Starter
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I did my redneck data logging AFRs on my new motor with the higher compression Alfaholics pistons. My first runs were with 135 mains and 220 ACs. That was to lean.
Then with 135 mains and 210 ACs which gave me [email protected]
and then 130 mains and 200 ACs which was [email protected] I decided on the 135 and 210. The pull in 4th from 2000rpm was smoother with this as well.
The complete jetting is:
135 Mains
210 AC
f11 tubes
34 chokes
55f8 idle
Ed and anyone else, what do you think.

The passenger seat is 15 miles an hour faster than the drivers seat.

currently
2017 Giulia Q4
74 GTV restored daily driver
71 Berlina in 2L restored driver
the ones that got away:
1959 750 series Giulietta Spider Veloce
1962 Giulietta Spider normale
1965 Giulia Sprint normale
1972 GTV
1974 GTV
1974 GTV
1977 Spider
1974 Spider
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post #5 of 9 (permalink) Old 08-13-2019, 09:28 PM
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It depends upon where the AFR is at lower RPM under WOT and at part throttle. If it is generally lower than 13.0 then I would try 130 MJ and 190 or 180 AC.
AC size mainly affects high rpm AFR and has little effect on part throttle. MJ affects everything to some degree.

F11 is an unusual choice of emulsion tube for a Nord motor. The factory used F9 or F16. You will almost certainly end up with different main jets and air correctors than someone using F16's on a similar motor.

Ed Prytherch
79 Spider
85 GTV6 3L
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 #6 of 9 (permalink) Old 08-14-2019, 07:19 AM Thread Starter
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Thanks Ed. yes f11s are unusual but not uncommon either. I'm happy with the WOT afr and the cruise afr bounces around 13, sometimes a little under and sometimes a little above and sometimes right on 13. It's set up to where when I'm loping along under no "load" in 4th in and around 2.2k rpm at a steady throttle it runs smooth with no burping just a steady drone hitting on all four all the time. Again thanks. I have confidence I won't be burning a hole in a piston.

The passenger seat is 15 miles an hour faster than the drivers seat.

currently
2017 Giulia Q4
74 GTV restored daily driver
71 Berlina in 2L restored driver
the ones that got away:
1959 750 series Giulietta Spider Veloce
1962 Giulietta Spider normale
1965 Giulia Sprint normale
1972 GTV
1974 GTV
1974 GTV
1977 Spider
1974 Spider
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post #7 of 9 (permalink) Old 08-14-2019, 07:39 AM
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You won't burn a piston by running lean at part throttle. My GTV6 deliberately runs in the 15's at cruising conditions @ 60 - 80 mph. I agree that if you are not running rich at WOT in the sub 5000 rpm range then 135 is probably the right MJ.

Ed Prytherch
79 Spider
85 GTV6 3L
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 #8 of 9 (permalink) Old Today, 03:28 PM
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Quote:
Originally Posted by gigem75 View Post
I kept my foot out of it until I didn't. Break in complete.

https://youtu.be/rmTwPwZHmqo

😳 so whats new from the engine you built in my car? Pistons / Cams / Distributer? Exhaust different too i gather... still with webber 40s? Seems to rip a lot harder than mine. Very nice!

Current Garage: 18' TRD Pro 4Runner (DD), 13' Ducati Hypermotard (Canyon Express), 74' GTV 2000 (Soon to be Outlaw'd) Work: www.trahanphoto.com
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post #9 of 9 (permalink) Old Today, 06:42 PM
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Sounds very nice Mike. Congratulations. Don't let your friend drive it.

Ed Prytherch
79 Spider
85 GTV6 3L
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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