Mk1 Golf 2.0 ABA Swap / HOT RODDING A 2.0L 8V pt.2 / MOCK UP / Volkswagen VW Rabbit Citi Cabrio
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- Опубліковано 30 лис 2021
- MK3/MK4 8v Deep Dive Info:
ABA:
Bore Diameter: 82.5 mm (3.25 in.)
Stroke: 92.8 mm (3.65 in.)
rod, ABA:159mm
Compression Ratio: 10:1
Horsepower: 115 @ 5,400 rpm
Torque: 122 ft-lb @ 3,200 rpm
OBD1 ABA's through 95 had forged cranks, under piston oil squirters and the dual valve spring heads, this allows for a cam with more lift without getting spring bind. Some had EGR, but that only made a small difference in the intake manny and management.
OD2's engines came out in 1996. OBD2 ABA's lost the good crank and squirters, went to a single valve spring design, and had a hole in the head for the smog pump.
The OBD1 ABA is an amazing engine to turbo. Rumor has it, VW originally set-out to design a turbo engine when they ran out of time / funding and decided to up the compression (with different pistons) and use it as a torquey N/A 4 cyl. Who knows if that story is true ... it certainly is possible as it is very unusual for a 115hp VW to have oil squirters ...!
AEG, AVH, AZG:
Bore diameter: 82.5 mm (3.25 in.)
Stroke: 92.8 mm (3.65 in.)
rod, AEG:141mm
Compression Ratio: 10:1
Horsepower: 115 @ 5,200 rpm
Torque: 122 ft-lb @ 2,600 rpm
the stroke length is maintained through different wrist pin heights and the shorter block (ie aba’s deck height change is equal to the change in rod length). Thus the shorter rod creates better low down torque but the ABA will rev better and make a wider torque curve (higher in the RPM band).
AEG heads do have swirl ports though… The intent is to swirl the mixture as a way to help it fill the cylinder at lower rpms. Its believed that this is one of the reasons the AEG makes better low-end torque than the ABA. However, the shorter deck and larger bore the the AEG is the primary reason for the greater torque though; this intake design is just a way to help fill the cylinders because of the shorter stroke.
Basically, the biggest difference comes in the power curves. The AEG+ engines give more torque and horsepower at the lower rpms. Mostly this is due to different camshaft profiles and the individual intake manifold runners compared to plenum in (MK3). The torque and hp actually comes LATER in the rpm range due to the different manifolds and the camshaft profiles! The MK4 intake manifold is longer and has individual runners. The longer the intake manifold runners, the earlier the torque comes. The shorter the runners the later the torque comes.
The AEG cylinder head is nothing more than a modified cast of the ABA placed on a 1.8T 06A block. Thats right,it is the block that has the 3 oil return drains in it NOT THE HEAD
Other Notes:
The AEG cross-flow is not a tall block, dropping back to 220mm like the earlier block (1.8). Suspect this was to enable it to fit the more aerodynamic hood lines that are becoming fashionable. Bore spacing, head-bolt pattern and all of that stuff is the same, but that's about where the similarities end.
The tall-block ABA cross-flow motor was transitional, and would bolt into a mk1 Rabbit. No such luck with the AEG-motor. There are no provisions for a front motor mount and no provisions for a side mount - in fact, there are no provisions for the MkI/MKII motor mounts at all. There is no intermediate shaft, and thus no distributor- and no place for one. The MkIV cars all have a coil-pack ignition, and since you can't add a distributor, you would have to swap the whole ignition system over to use this motor in an earlier car.
ABA’s have external water pump, intermediate shaft driven oil pump and distributor
AEG has a timing belt driven water pump and a chain driven oil pump thats built into the front of the engine, Audi style. Because of that, the AEG crank is not interchangeable with previous motors. It's a heavy cast crank, so serious, high-revving performance mods are probably not a good idea. The water pump is all in the block, and there is a different style of oil pan. The cylinder head bolts are 10mm diameter rather than 11mm.
Can you swap a AEG head on a ABA bottom end?
The AEG 8V head has the same 5 oil drain holes that the 20V heads have. You will hear a lot that, If you want to put it on an ABA block you will have to plug the three middle holes. However, this is not true! It is true only on the 20V head because the 20V head sticks out over the block, the 8V does not...
I believe its best to run dual valve springs on the OBD1 ABA head either way. This head seems to be the best flowing, least extra work head to use. Using the AEG head the manifolds should be fine, but since its on an aba anything you buy in the way of exhaust should be tailored to an ABA because of it's taller block.
In summary of AEG head on ABA… If it's an OBD2 ABA it wouldn't be any difference. If you have an OBD1 head, then I would stick with that over an AEG. - Авто та транспорт
Man this is super cool!! Doing an ABA swap into a mk1 right now.
Amazing! Love the creativity and knowledge all coming out to make this work. Can’t wait to see the next load of parts. 👍
Awesome work as always nice clean build so far
Fantastic problem solving ability you have man, great work, look forward to the next one 👍 🙂
Once again nice work Ry. Very creative and calculated. Super interesting build. Hope your all good with this second blast of rain bro
Awesome dub
Looks a hundred times better than the ABA intake. Those runners would looks awesome polished too. A little OEM+ look. Great works as usual R. Looking forward to seeing this one run with the upgrades.
cool video my first car was a 79 rabbit i loved that car
Just subbed. I love me some 8v engines
Cannot watch right now but I will tonight after I am done with this Audi A3 3.2Q. Been waiting for episode 2.
I'm excited to see this customer project Rabbit with a hybrid 2.0 liter using Mk3 and Mk4 parts to make it a better driving hot rod. I like the way you have solved the problems making the parts work together, making the front hood fit correctly. I especially like the eay the intake tube with the air filter position worked out. Really looking forward to seeing part 3 of this Mk1 and how much gain there is in HP!
OGz be droppin a like before thy watch,,,Great content Sir
Thank you thank you!!! Appreciate that very much, thanks for watching! Cheers
Head work is where it's at on an aba.
Wow ! Great work ! Thinking this would look good in my garage beside the Scirocco ! LOL. Hope it is drying up outside for you .
looks awesome. I would polish that big intake and ditch the cover
Come back. We need videos
Nice channel, very informative. Would you ever consider doing a Vanagon passenger as your next build?
Hey I watched your first video on this "hot rodding" and you had some very good info in the video and the video description. I noticed that there wasn't any info on the mk6 Jetta 2.0 that was offered as a base level car. Do you have any info on that 2.0? Was it just another AEG Mk4 2.0? I believe the intake is just like the Mk4 but is plastic. Great job on videos! You earned a new subscriber!
Looks good!
Regarding IAT, not possible to install in the intake hose?
I don't know the ABA, but on aftermarket ecu IAT bolted to the intake cause false Reading of IAT due to heated up by the aluminium and it cools down slowly.
Hi just a quick question with the intake filter being directly behind the fan would that not cause a power loss as the fan is pulling the heat away from the radiator the intake will be sucking in all that heat into the engine.
Great Video, I have a mk4, it's got the later model apk, looks like the obd1 aba throttle body does bolt straight into the mk4 manifold. Did you have to make any brakets or just a straight fitment? Cheers
It would be great if someone has a hoist to donate to this shop.
Hahahah I like the sound of that! To be honest, I don’t mind how I roll now plus not sure I have the ceiling clearance. One day though, maybe I’ll move shops and get a hoist, but for now this works!! Thanks for the continued support, I really appreciate the watch! Cheers
You know your stuff on vws. I have a 90 Jetta gli 16 valve been sitting for about three years trying to get it going for know till I find the wright motor for the swap will run on b12 getting fuel to injection pump but no fuel from injection pump to the motor wich makes me think the injection pump is bad but can’t find one nowhere or not a rebuilt kit any help would be appreciated.
I got a 89 Cabrio stereo stolen electrical problem would like to swap mechanical injection to modern ad supercharge among suspension and upgrade transmission have any suggestions I got the header all ready
Another great production. I would like to see you place a tire on rim under car or wood block safety when working under teeny jack stands...a slight earth tremor at the wrong moment may kill you. We need your knowledge please be safe.;)
I thank you very much for your concern! I assure you, while maybe they might look small on camera, these jack stands are pretty beef! I’ve used them for years and never so much as seen a wobble… if you are uncomfortable with this, you should watch the early “step child” episodes where I have the car up on saw horses lol. Again all super safe, don’t it lots before. Anyways, appreciate the support very much and thanks for watching!! Cheers
got a question dude what are you going to do about it being 4x100 on the back and 5x100 on the front is there a conversion you can do?
Wished this was the 1.8, suppose I could bore it bigger = less weight
I've got nothing but Thumbs up's 👍 for all of your builds. Here's a question for you and All your viewers May have? When doing an ABA mk1 swap like this' which is exactly what I'm doing" and being that it's a tall block what upper strut/stress bar would you recommend to clear the ABA intake manifold?
Thank you so much! I appreciate that! As for the strut bar, that’s a very good question, I’m not sure. It would have to be very specific to clear the intake mani and not contact the hood in any way… has someone on here found one?? Thanks for watching, appreciate the support! Cheers
the JOM bar is cheap and available
What header did you replace? I’m working on a ABA swap into my mk1 GTi and trying to find headers to use on the cheap. I’m told the OBX Aba headers work fine but I’m not sure. The TT headers are awesome but that 500 bucks is the difference between this motor going in next week or next month. Thanks in advance
Do you still have the exhaust manifold?
Does this set up still fit an AC? I’m in Texas and have to have AC for the intense heat.
Where are you located in Canada?
Where are you and how much to VR6 swap my MK6
I'd rather see the air filter in the rain tray rather than right behind a rad fan, otherwise it's looking good.
Where is the Red Rabbit?!
where tf is this guy??
Just one golf mk1 mk2 mk3 vr6 turbo 4wd for sale the money is 15 mil dollars