Kerry's 330GT Service Bulletin

Yale · Post by **Yale** » Mon Aug 08, 2005 5:26 pm

I asked Kerry about 6363 that is for sale, (very nice by the way), and mentioned that it had the wrong (later) air cleaner, (and a couple of other things like the later bumpers and wheels).

He casually mentioned that he had a Service Bulletin from Ferrari about correcting for a possible flammable situation!

I quote Kerry quoting from the Service Bulletin:

Air cleaner! I have a service bulletin (actually a recall) from Ferrari on the 330 GTs. It's dated 6/11/64 and says:

"In view of avoiding any possible overflowing, we have decided, in agreement with Messrs. Weber, the replacement of carburettors type 40 DCF [DFI in Italian text] with carburettors type 40 DCZ/6, in all cars of the above mentioned model.

"We are, therefore, despatching to your the carburettors and new air filters, and we suggest you to carry out this replacement on the following numbered cars, with the utmost urgency:
[empty space for serial numbers]
"May we emphasize the point that this modification should be kept strictly secret, and the Owners should only be informed of the air intake replacement.
"As soon as this modification has been carried into effect, please return to us the carburettors and air intakes so removed, in one only lot, by ordinary shipment and declaring a very small value for Customs purpose."

Nothing like trying to prevent lawsuits if your car burns up from a faulty carb!

What I don't know is if these air cleaners were the same type (oval chrome slotted) fitted for the new carbs, or the new style with the snorkel tubes.

Regards, Kerry

---

I sent Kerry a further letter asking in effect, what the hell? Are all the old style aircleaners supposed to be replaced by that snorkel (ugly) type?? And he explained thusly:

"Given the date of 6/64, only the ones through about 5500 might have been affected. One would assume that Ferrari changed the production run by that date. The '64 production is ~5100-6000. I just got this a couple of weeks ago, so I haven't had a chance to do any research. I'll see what I can find out from the cars at CI in a couple of weeks. The parts books I have all show 40 DCZ/6 for the 4HL cars."

Of course this discussion started with me asking about 6363 so maybe Bill Rudd, who restored 6363 10 or so years ago decide on these updates or...? And where does this leave the 330 America's????

Yale

Post by **330GT** » Thu Oct 05, 2006 9:14 pm

The change from 40 DFI carbs to 40 DCZ/6 ones occurred somewhere between 5957 and 6037. 5957 was finished on 5/25/64 while 6037 was finished on 6/19/64. This fits well with the 6/11/64 date on the recall letter.

As I was going back over this, I noticed that my original email to Yale mentioned 40 DCF, not 40 DFI carbs. I went back to the original service bulletin. The Italian page says 40 DFI. The English page says 40 DCF. Given that the build sheets mention 40 DFI, I'm sure that those were the original carbs that were to be replaced.

In my productions changes webform (http://www.parrotbyte.com/330GTRegistry ... esForm.htm), I am asking what kind of carbs are on the cars now. It will be interesting to see if any still have the DFIs and how effective Ferrari's silent recall was.

JonBrent · Post by **JonBrent** » Thu Oct 05, 2006 11:34 pm

Ok, how about this then: 7537 was finished a year past the recall, yet the motor build sheet lists WEBER 40 DFI 2 for the carbs:

http://www.jb330gt.com/beginning/BuildSheet2big.gif

However, the car now has three WEBER 40 DCZ6 (and the series 2 snorkle aircleaner). Could it be that motoristi Franchini grabbed a couple of DFI 2s and put them on, as there were a bunch of them lying around? I wonder.

I don't have any of the earlier paperwork for the car, so don't know if it was ever part of a secret recall.

What do you think? Thanks for some fascinating sleuthing!

Cheers,
Jon

Post by **330GT** » Fri Oct 06, 2006 12:21 am

JonBrent wrote:Ok, how about this then: 7537 was finished a year past the recall, yet the motor build sheet lists WEBER 40 DFI 2 for the carbs:

http://www.jb330gt.com/beginning/BuildSheet2big.gif

...Jon

Hmm, I didn't look at any later build sheets than 6037. I need to do that and see what others show DFI 2s.

Given the wording on the recall about a potential fire issue, I doubt that Ferrari would have used any DFI carbs after the recall.

One thing I noticed on your build sheet (both P2 and 3) was that the carbs were 40 DFI 2, not 40 DFI as on earlier sheets. Maybe Weber corrected the model and came out with a second version that were OK so Ferrari stopped using DCZs for a while and changed back?

I'll do some more looking at later build sheets and see if I can figure out this puzzle.

In the meantime Jon, would you please complete my online form? Your car was one of the last interim (4HL/5 speed) cars, so it'll be interesting to see if any of the other changes for the 2HL model ended up on your car.

Post by **330GT** » Fri Oct 06, 2006 9:42 am

In reviewing the build sheets that I have available, there were two other cars with 40 DFI/2 carbs, but they were in the 8400 serial number range. All of the rest were 40 DCZ/6.

So, even more mysteries about Ferraris.

I don't know the differences between the DFI and DCZ series except that the Z stands for Zinc, i.e. heavier than aluminum carbs. I guess in a 2+2, a few extra of ounces in the carbs doesn't make much difference.

Anybody else know more about these carbs?

JonBrent · Post by **JonBrent** » Fri Oct 06, 2006 12:45 pm

Kerry - yes absolutely, I'll complete the form.

Deane · Post by **Deane** » Fri Oct 06, 2006 7:45 pm

In case it matters, DFI/2's were fitted on later 330GTC/S cars as well. DFI/5's went onto 365's.

jsa330 · Post by **jsa330** » Mon Oct 09, 2006 5:56 pm

330GT wrote:The change from 40 DFI carbs to 40 DCZ/6 ones occurred somewhere between 5957 and 6037. 5957 was finished on 5/25/64 while 6037 was finished on 6/19/64. This fits well with the 6/11/64 date on the recall letter.

.....

My car, #5409, has 40DCZ6's. The page of the buildsheet with engine test data, dated 3-1-64, shows 40DFI's.

Manufacture date per Heritage cert. is 8-1-64.

Post by **330GT** » Mon Oct 09, 2006 7:30 pm

bluecat49 wrote:Manufacture date per Heritage cert. is 8-1-64.

Remember that the build sheets and heritage certificate use the European ddmm date order. So your date is Jan 8, 1964.

jsa330 · Post by **jsa330** » Mon Oct 09, 2006 9:02 pm

330GT wrote:
bluecat49 wrote:Manufacture date per Heritage cert. is 8-1-64.
Remember that the build sheets and heritage certificate use the European ddmm date order. So your date is Jan 8, 1964.

I did forget that...so final engine test data on Jan. 3, 1964 and car completed on Jan. 8 make sense.

That puts it in a definite era...around the first time I heard the Beatles on the radio.