fuel injected 1776?

norcalmike · Posted: Thu Jul 05, 2007 12:13 am Post subject: fuel injected 1776?

o.k.
a project that will be moving from the back burner to the front next week is a 71 squareback with A/C. sitting a VERY long time.

i am going through the whole car.
since the FI is complete i am choosing to restore it since it has a reputation for being efficient and reliable.

Now, to the question. if i build a 1776 for it, will the stock FI work well with it?
and if not, is there anything i can do to make it work better.
i have some dual dellorto 34's but i'd really like to roll with this injection.

thanks, mike

KTPhil · Posted: Thu Jul 05, 2007 8:06 am Post subject:

What cam is in it? I'm assuming stock or close to it, or the auto shift modulator might be getting confused anyway. Your engine is only 10% larger than a stock 1600, so I would not expect any problems with the slightly larger displacement and the stock EFI. At most you might need to bump your fuel pressure slightly (1-2 psi).

COFBack · Posted: Thu Jul 05, 2007 8:41 am Post subject:

I have "heard" that a 1776 is about as large as you want to go with the stock FI. You'll have to keep the stock cam.

Larger you can use Porsche 914 injectors.
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norcalmike · Posted: Thu Jul 05, 2007 5:19 pm Post subject:

ok so,
1776 is alright with a stock cam and stock FI. im not looking to race, i just wanted a little more giddy up than a 1600.

thanks for the help

Tram · Posted: Thu Jul 05, 2007 5:27 pm Post subject:

From what I've heard a 1641 is about as big as you can go with stock D- Jet FI.

I would research the notorious unreliability of the 1776 before diving in. Most experienced VW techs who build their own engines feel that the gain from a 1776 displacement is more than way offset by the reliability of a 1600 or 1641. I agree, and I don't think the 1776 is worth it- at all.
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norcalmike · Posted: Thu Jul 05, 2007 5:36 pm Post subject:

Max Welton · Posted: Thu Jul 05, 2007 5:41 pm Post subject:

norcalmike · Posted: Thu Jul 05, 2007 7:24 pm Post subject:

anyone else Question

erlawson · Posted: Thu Jul 05, 2007 10:51 pm Post subject:

I haven’t had any problems running a 1776, I have one in my 66 squareback and one in my 64 notchback and they both have been great. I’ve also put almost 100,000 miles on the 1776 in my baja, and that is driving them all in Phoenix heat!

Eddie
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57 ragtop bug, 59 Country Buggy repop., 61 ranch buggy/bus, 62 baja, 63 dune buggy/baja, '66 dune buggy, '66 & '67 fastbacks, 70 "Mule", 73 Thing, 09 dune/street buggy

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Towel Rail · Posted: Fri Jul 06, 2007 12:07 am Post subject:

norcalmike · Posted: Fri Jul 06, 2007 5:28 am Post subject:

thats what i always heard. i was shocked when Tram said that they are "notoriously unreliable"

blankmange · Posted: Fri Jul 06, 2007 5:30 am Post subject:

ditto -- this is the first I had heard that a 1776 was less reliable than anything; in fact, I had always heard that a 1641 was a waste of time vs a 1776... cost vs power, etc...
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COFBack · Posted: Fri Jul 06, 2007 6:07 am Post subject:

Tram was on the bottle (again !)

1776 here, no significant engine issues (but don't talk to me about fuel delivery)
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Air-Cooled Head · Posted: Fri Jul 06, 2007 11:22 am Post subject:

Rome · Posted: Fri Jul 06, 2007 11:29 am Post subject:

How would that 1776 and its adjusted FI tolerate 1.4 rockers? Since you're keeping the stock FI cam and increasing the fuel pressure slightly anyway to add more fuel to the combustion chamber... should work fine for a few more HP, or?

Russ Wolfe · Posted: Fri Jul 06, 2007 12:00 pm Post subject:

The higher lift rockers still screw with the intake vacuum. That is what the ECU is looking at, in regards to fuel delivery.
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Tram · Posted: Fri Jul 06, 2007 12:06 pm Post subject:

Meh. I've just seen too many "built" or "modified" engines self- destruct long before their time, vs. the old reliable stockers. Come to think of it, though, most guys I've seen with them are maniacs and drive them as if they were a Porsche 930.
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norcalmike · Posted: Fri Jul 06, 2007 1:43 pm Post subject:

o.k. i can understand that, Tram. someone with a 1776 would most likely be beating the snot out of it lessing its life and reliablity. sounds likely.

normally i too would be hammering on a 1776 in my bug.

i just figured since i was rebuilding it anyway, might as well kick it up a notch or so.

i think from the input i got here, it seems like a 1776 with stock cam and FI would be fine. i will repost when the project is done.

****i forgot to ask about heads*****

stock also. or can i do anything to the heads that will not interfear with the proper function of the FI?

i appriciate everyones input so far. even Tram's Very Happy

blankmange · Posted: Fri Jul 06, 2007 1:48 pm Post subject:

I'm going with a 1776 for my square also (but not FI) and I don't expect to be beating on it.... I fully intend for this to be the last motor this square will need...
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rosevillain · Posted: Fri Jul 06, 2007 1:48 pm Post subject:


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