Swapping an ALH TDI Transmission into a Jetta 1.8T
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- เผยแพร่เมื่อ 28 ก.ย. 2024
- Over the winter Izzy got a built Jetta, when he got it second gear was blown so we replaced the whole transmission with a Tdi trans. The benefit of a TDI transmission is that the TdI has longer gears so it ends up saving you gas because your driving at lower rpm, as well as you are able to push your car longer.
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Me and my father tackled my clutch/flywheel and timing belt on my 02 TDI over spring break. He lives 12 hours away, but has a lift and trans jack. Even with the right tools, that job still sucked. Those axle bolts suck ass. The biggest problem for us was the bracket for the shifter linkage, what a pain. Torching the twisted old dual mass flywheel to access the bolts was also fun. I broke my mileage record on that trip, 52.9 on a tank. I also left the casino $500 ahead and recouped all costs for parts, tools, and the trip.
It would be nice if we had the CODE. Useless video if it doesn’t give us data. Transmissions have codes. I need the code of the tdi.
wait... so a TDI 2.5 5cyl Transmission fit a 1.8T MK4 engine?
1.9 TDI
What year is the Jetta and what year did the tdi transmission come out of
The jetta is I beleive an 02. Don't know on the year of the transmission. But I beleive any ALH trans should bolt up. Not sure on the BEW
so what's your tdi transmission code , i have 1.8t and i need the code to fit that transmission
mohamed anbar it’s says it in the title of the video
ALH isnt the trans code though, its the engine code of the tdi it was taken from. The trans code should be EGR O2J although some mkiv TDI's had different trans codes.
subscribed. great guide
im pretty sure it would have been better to swap a 2.0 na transmission with a 4.2 ring and pinion with the 1 through 5 gears from your 1.8t transmission. this would make your car hit only 2 gears on a 60 to 130 pull and have 5th gear top out at 135 mph and you will be able to hit all 4 gears in the 1/4 and have your 4th gear hit 110 to 115 mph at 6200 rpms. go faster with less power with that combo.
What would cause a auto trans to be stuck in 1st until fully warmed up?
Joshua Craven is it a Volkswagen? If so if it is a Mk4 then they have historically horrible transmissions. Not much you can do really from my experience
DubClub yeah it's a mk4 1.8t auto and I've heard that I can do a 5 speed swap out of a 1.9 tdi
Joshua Craven you can, just gonna be a lot of work
was that car auto at one point? i saw the coolant flange was blocked off in one outlet
No its just because of the shaved bay
Yall should go into how the tdi trans drives on a 1.8t.
My trans just went so I went to pick up a 1.8t trans and buddy gave me a free tdi trans so I'm probably just gonna swap the tdi trans into it lol
For daily driving and fuel economy it was pretty decent. 1-2 are the same as 1.8t 3-5 are a lot longer so when you shift from 2 it’s a pretty big drop but you can cruise at 80mph and only be at around 2800 rpm in 5th. Only bad side was the car felt super slow due to the longer gears.
@@IT_Performance just as expected! my original thought was drop the tdi 5th into the 1.8t trans but i might just rock the tdi lol thanks for the response!
so you want to say if i swap my ALH to AGU 1.8t transsmision i get more power in my diesel or? i was fixed all the time that diesel transmission has shorter gears
Diesel transmission has longer gear
Awesome.
Why did you switch the gear selector, did the new transmission not have one or are they different?
it was diffrent
So you put the 1.8t tranny selector gear in the tdi tranny ?
@@bobbinette9286 yea you gotta change out that and the axel boots
Wauw I also have a plan to put a tdi gearbox on my auq engine for my Leon
Greetings from the Netherlands
Hello! So after this we realized that that was not the best trand to put on a big turbo car. Unless you're trying to strictly got for top speed. Because the rpms drop too much when you change gears so you almost drop below the spool point on the turbo and have to wait for it to get enough rpms to spool the turbo. I don't know what your application is , but just our 2 cents
Wanna, try to make it a, little les using gas
It's cost here now 1.60 euro a liter
Can, we mail or Whatsapp for talking
traantje@live.nl for. Mail
Of wanna, Whatsapp sent mail and I replay with number
We just sent you an email a little bit ago.
what brand of engine mount are on this 1.8t ??
Those are BFI stage 2 mounts
@@IT_Performance Tnx man
That's not a cold air intake lol
I know. Izzy is just a youngin. its ok
Lord have mercy on my soul. -Izzy
Do you have a compiled list of parts used?
Hello?
So.... that’s a no?
Hi guys, can you help? A have audi a3 1.8t 110kw standard, i want to do the same swap for drw transmission, do I have to change the starter, and clutch?
would there be any difference in a 5spd swap vs 6spd swap?
Only difference is when swapping between 5 speed and 6 speed you need axles and knuckles to go along with whatever trans your putting in. The 6 speed axles are a bit thicker
Ok guys im sorry to ask i have 03 1.8t golf i would love to do this can you tell me what trans i need to get. I would really appreciate it.
Hi there, what is the top speed did you get out of the diesel transmission and whats the hp on the car? I have my on project on going and I was wondering to go for the 5 speed or 6 speed. Much appreciated if you can reply back ASAP with some advice cheers.
It was at around 400 WHP. Not sure what the top speed was, we never got it up that fast. But we would recommend a 6 speed with a reinforced fork and an lsd.
Thanks mate that's great news
so...what have you noticed about the gear ratios? Help any on that motor setup?
the tdi gears are longer, they are designed for lower rpms. so when u match it with a 1.8t you get a longer pull and lower rpms in 5th so u get better mpgs on highway plus longer pulls in lower gears
MAKE A VIDEO OF YOUR PULLS!
Whats speed can u hit in 1st, 2nd and 3rd? And where are your RPMs in 5th driving at 60-70mph!
Thanks buddy
drew lee no pulls. No nothing from this car since
I did a change in my trans. I changed the differential of my 1.8t automatic for TDI's and I can hit 80mph while going at 3k RPMs.
Are holes from transmission at same spot as should be to connect the engine??are cv axles the same?
The bolt holes are the same. And you have to swap out those axle cups like we did to be able to use your original axles. You can either do that, or you can take the axles apart and swap out the part that mates to the transmission. I recommend just swapping the axle cups on the transmission.
@@IT_Performance οκ, thank you
Hi nice job !! Please forgive my ignorance but I have a 2.0 jetta what would happen if I bolt on tdi transmission on it ?
Your car would feel very very slow
@@IT_Performance Thak you very much for the quick response I appreciate it.
@@libres12 np. It's because the 2.0 doesn't have much power to begin with, so it's got the shortest gears out of all the mk4s to try to make it feel a bit quicker. Which sucks cuz I think at 70mph in 5th your at like 3k rpm.
I'm swapping tiptronic 1.8t for a 5 speed any idea how can I wire the speed sensor thanks.
I know that you have to splice one of the ecu wires. I am not sure which one, let me ask Izzy and get back to you, he should know more since he just recently actually swapped from an autotragic to a manual transmission on one an MK4.
@@IT_Performance thank you so much
One of the speed sensor wires has to go to the ecu and splice off into the cluster. Izzy said he will link the write up for you here.
@@IT_Performance that will be great and if you guys can help me with the reverse sensor will be nice I have an idea how to connect that but I'm not sure and don't want to burn something thank you guys. Sorry I forget to mention that is a 03 Jetta
There is a write up of the process in this link forums.tdiclub.com/showthread.php?t=151516 when you click on it, there is a file you can open that has all the wiring you have to do. Click on the word file since it looks like the pdf version is no longer there. Sorry for the late reply, Izzy was being a turd.