2.4L with carb and auto. Doable?

[thescifiguy]

I've got the opportunity to get my grubby little hands on a complete 2.4L engine for my newest GT. For now, due to various reasons, I want to run it with a carb(s) and an auto tranny. Is this relatively easily doable?

Do I need a 2.4 specific auto flywheel?
Can I just block off the extra coolant outlet(It comes off the thermo housing, right?) or put a therm housing from a 1.9 on instead?
Will a 1.9's intake work with only minor alterations? How about dual side draft manifolds?

I'll have to install an electric fuel pump, a better radiator, and change the oil pan. I won't be racing or beating up the engine much.

What other problems will I encounter? What mods will I have to do?

[2 Fast 4 U]

The automatic will bolt right on.
An auto flywheel, I think, is the same for all CIH engines.
The extra coolant outlet is in the same spot as the blocked one on other engines, so I don't think that there will be a problem using the 1.9 housing.
You can use the oil pan from a 1.9 on the 2.4.
And about the rest you'll have to ask someone else

[opelwasp]

Being the owner of a 2.4L I'll go ahead and take a stab.

You will need a 38 DGAS at a minimum for the carb. You will need to fabricate adapters for any carb setup to work. Not easy but do-able. The stock exhaust manifold must be replaced with a larger one and does not bolt to the intake. The flex-plate and converter should work just fine.

I say definitely do it, it is so worth the ride.

[thescifiguy]

Considering the trouble I'll have with getting a carb to work, maybe I should just bite the bullet and go for the FI system. It sounds like it's going to be just about as much trouble either way. The seller has an "altered 3.0L manifold" to go with it. If I go with the full 2.4L with FI and 3.0L exhaust manifold will I have to eliminate the heater box and run return lines to the fuel tank? Assuming that that's true would the necessary basic mods to put a 2.4L in a GT be:

Electric fuel pump
Fuel return to the tank
Heater box removal
New or bigger better radiator
Rear sump oil pan

Anything else?

[opelwasp]

You don't need to remove the heater.

I am using a rebuilt(not rodded and cleaned) radiator with a 16" electric fan in a pusher configuration. And I do fine in the California heat (110 deg).

If you do get it rebuilt get more rows than stock.

[broszzy]

I,ve got a mod sheet from OGTS to make a 1.9 intake fit a 2.4. I can fax you if you would like it, also I talked to bigjim5551212 he told me that a 32/36 is plenty carb for a 2.4 for street use. I.ve got a 2.4 that will be going in my GT after I get every thing else done so I have been doing some research on this
Pat

[thescifiguy]

The seller tells me that carb intakes made for the 2.2/2.4 are available.

He says that they're expensive in this country, but he'll try to find me one while he's overseas.

Anybody got one?

[RallyBob]

Originally Posted by thescifiguy Can I just block off the extra coolant outlet(It comes off the thermo housing, right?) or put a therm housing from a 1.9 on instead?

Keep in mind the 1.9 thermostat housing does NOT bolt up to a 2.4 head, the bolt pattern and passages are completely different.

And if you decide to go with EFI, you need to plumb a new pressure line and a return line. The stock Opel plastic fuel lines (and flexible hoses) were designed for 3.5-4 psi of fuel pressure. EFI will typically run at 35-45 psi and will rupture the OEM lines.

[2 Fast 4 U]

Originally Posted by thescifiguy The seller tells me that carb intakes made for the 2.2/2.4 are available. He says that they're expensive in this country, but he'll try to find me one while he's overseas. Anybody got one?

I made an adjustment to an existing 1.9 inlet manifold to fit a 2.2 and put some photos here on the site, but I don't know in which thread

[thescifiguy]

If I go FI, do I need to eliminate the heater box to provide clearance? I'm gonna go the carb route for now, 'cuz that's my comfort zone, and get the rest of the FI stuff from the guy in about six months for installation at a later date. But I need to know NOW if the heater box area has to go because the car is gonna get painted soon
.

Originally Posted by RallyBob Keep in mind the 1.9 thermostat housing does NOT bolt up to a 2.4 head, the bolt pattern and passages are completely different.

Does a 2.4L have an extra thermo housing FI outlet AND an extra water pump outlet? Can I just block off both or connect them together?
If I lose the heater, I can just block off the two inlet/outlets or just connect one to the other?