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Opel Tinkerer and Rescuer
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7,426 Posts
FYI.. Rav cut the ends off the 2.4L Manifolds and shipped them with the engines.

I have a number of 1.9L and 2.0L manifolds handy and was planning on modifying them to fit the engines.

Will get a price from my local shop to get the work done. If anyone is interested.

They did FTs intake be it with a RallyBob Flange.. Figured I may get them to make me 4 or 5 manifolds if the interest is there.
 

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Opeler
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730 Posts
Ok, so I am confused, again. I have one of the 2.4's, in this shipment from Rav. I was under the impression that I was buying a complete 2.4 with fuel injection, ecu, and harness.
Are these long blocks to be converted back to carbed versions? Not sure now, what I am buying.
 

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Opel Tinkerer and Rescuer
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7,426 Posts
Ok, so I am confused, again. I have one of the 2.4's, in this shipment from Rav. I was under the impression that I was buying a complete 2.4 with fuel injection, ecu, and harness.
Are these long blocks to be converted back to carbed versions? Not sure now, what I am buying.
You can either go EFI, or Carb. Its whatever you want to do to it. We didn't ship the oil pans or the manifolds as they would take space and didn't fit the GT anyway.

I was planning to send those that got the whole motor a spare 1.9L manifold I have to go with the EFI and the 2.4L ends off the 2.4L manifold so have options on making it work or I can get my local shop to do the mating for you. It was $200 to do it with the RallyBob flange, if I do a few of them at a time I could possibly get them made cheaper.

You will need to modify and reuse your oil pan, as the Frontera one will not fit in a GT.

Other than that, it should be complete to include the EFI harness, and bits and pieces, starter and alternator too.
 

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Opeler
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730 Posts
OK, thanks. I have a long runner intake, that I got from Gil, for an EFI/TBI conversion. I had never seen one of these before, but I believe he used one on his Conrero version. It will need the 2.4 intake flange to fit the new head.
 

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Opel Tinkerer and Rescuer
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7,426 Posts
OK, thanks. I have a long runner intake, that I got from Gil, for an EFI/TBI conversion. I had never seen one of these before, but I believe he used one on his Conrero version. It will need the 2.4 intake flange to fit the new head.
That or it would seem you can modify the old one.. not sure. Not having done it myself yet.

But thats why I had him cut the ends off the 2.4L manifolds and send them with the engines just in case. If your not going to use the stock EFI let me know and we can work out something.
 

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Senior Contributor
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4,961 Posts
Ok, so I am confused, again. I have one of the 2.4's, in this shipment from Rav. I was under the impression that I was buying a complete 2.4 with fuel injection, ecu, and harness.
The 2.4 intake manifold will not fit under a GT hood, WAY too tall, which is why Charles had them just cut off the flange so that you would have something to work with.
 

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Just Some Dude in Jersey
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14,122 Posts
How much too tall are those manifolds? An inch? More? Are they still too big if your car has one of the Lenk hoods with the "power bulge"? Do the 2.4 intake thingies clear the cowling? If all that's needed is to put a different hood on, that's better than modding the intake and probably cheaper.


:ugh:
 

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Opel Tinkerer and Rescuer
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7,426 Posts
How much too tall are those manifolds? An inch? More? Are they still too big if your car has one of the Lenk hoods with the "power bulge"? Do the 2.4 intake thingies clear the cowling? If all that's needed is to put a different hood on, that's better than modding the intake and probably cheaper.


:ugh:
THink will fit under a Lenk Hood, or somethign tall like it.

BUT most people don't want that.. they want to look stock. Also I wouldnt say cheaper those hoods can be pricey.
 

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Senior Contributor
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How much too tall are those manifolds? An inch? More? Are they still too big if your car has one of the Lenk hoods with the "power bulge"? Do the 2.4 intake thingies clear the cowling? If all that's needed is to put a different hood on, that's better than modding the intake and probably cheaper.:ugh:
The 2.2 manifold that just barely fits under the hood and slopes with the hood measures 8 1/2" from the centerline of the ports to the top of the manifold. The 2.4 manifold which does not slope much at all measures 10" from the centerline of the ports to the top of the manifold and it is also wider than the 2.2. (Face of ports to outside of manifold). I looked at cutting down the 2.4 but it is almost impossible because of the configuration of the runners.
 

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Super Moderator
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I think I have 3 or 4 raised-port flanges left over still, if someone wants to modify a 1.9/2.0 EFI intake to fit the raised-port 2.2 or 2.4 head.

 

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Just Some Dude in Jersey
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14,122 Posts
There's an additional benefit to that extra 3/4" of metal below the intakes: That "foot" virtually eliminates vacuum leaks by having more surface area, but mainly that it prevents your carb intake from wobbling up and down and working the screws loose. Bob welded similar feet to the bottom of my single side draft Midikit 2.0 manifold that he hogged out and ported for a 2.4. That sucker doesn't budge.


:yup:
 

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I think I have mentioned this on page 2 but

I have a 2.2 engine with a 2.4 head

What I did to solve the problem was to find a 3 litre 6 cylinder manifold and cut off 2 of the runners
The benefit is larger runners that flow better than all the other standard manifolds.
I welded, brazed mine back together using welding rods that stick the aluminium together ie more like brazing. Aluminium repair with HTS2000
I used the stove to preheat the parts along with a map gas torch to heat up locally the areas that were needed.

I have lowered the engine slightly by using non standard engine mounts, much cheaper than standard ones. The way I have done it should leave room for the hood opening mechanism, some thing you can have a problem with on some modified manifolds.
 

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Opel Tinkerer and Rescuer
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7,426 Posts
I think I have mentioned this on page 2 but

I have a 2.2 engine with a 2.4 head

What I did to solve the problem was to find a 3 litre 6 cylinder manifold and cut off 2 of the runners
The benefit is larger runners that flow better than all the other standard manifolds.
I welded, brazed mine back together using welding rods that stick the aluminium together ie more like brazing. Aluminium repair with HTS2000
I used the stove to preheat the parts along with a map gas torch to heat up locally the areas that were needed.

I have lowered the engine slightly by using non standard engine mounts, much cheaper than standard ones. The way I have done it should leave room for the hood opening mechanism, some thing you can have a problem with on some modified manifolds.
First issue with that option is finding a 3.0L manifold. They are rarer in the US than the 2.4L motor itself. That said told the 75 manifold with the Rallye Bob Flange works well and fits. Also Just so happens I am happen to have about 6 manifolds and (soon) 4 flanges. :)

FWIW I got them to give to the guys getting the motors from me. Figured I said complete motors. The motors wouldnt be complete without a efi manifold that fits.
 

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One of the Key things to keep in mind.
The difference between wet and dry air flow...

With late model cars has two air channels.
One is a narrow path for low speed...then switches over to a short fat runner.
 

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Super Moderator
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I believe the red Opel GT on the OGTS site is running the 2.4 intake with the Lenk hood. Feel free to ask Gil but that is what I am recalling.
Talking about this car?



That car has a 2.4 16-valve (Manta 400) engine. With 48 mm sidedraft Weber carbs. It doesn't need the hood scoop for clearance. It's just for looks.
 

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Last time I talked to Gil I believe he said "I hate that hood and would change it if I didn't have clearance issues". Maybe he was referring to a different car or a different issue, idk. It might be worth giving him a call before pulling the trigger on anything.
 

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Last time I talked to Gil I believe he said "I hate that hood and would change it if I didn't have clearance issues". Maybe he was referring to a different car or a different issue, idk. It might be worth giving him a call before pulling the trigger on anything.
:thinking:I was going to comment on that hood also, but my Mother told "If you can't say anything nice, don't say anything at all!" One of the things I am not going to say is "UGLY", because Mom was usually right! :yup:

Doug:yup:
 
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