[urq] 1.8T or V8? Decisions, decisions...
jeffrey.goggin at cox.net
jeffrey.goggin at cox.net
Sat Jul 23 13:00:41 EDT 2005
This past Thursday, I took delivery of a complete (including even the starter motor and coolant reservoir!) 1.8T engine setup that I plan to swap into my 99.5 A4. This engine has been bored and stroked to 2.0 liters, uses a hybrid Garrett turbo, has a modified fuel and ignition system, 3 exhaust, etc. When it was dynod last September, it made 335hp at the wheels running 29psi of boost on 101 octane unleaded. Potent, to say the least, and since its basically a turn-key setup Ive learned my lesson about getting involved with complicated engine swaps! I hope to have it installed and running within the next few weeks.
This will leave me with my present 1.8T engine setup: K04 turbo, 310cc injectors, PC_16 chip, RS4 intercooler, etc. When I had it dynod earlier this spring (before Id installed the RS4 I/C and fine-tuned the fueling), it made 184hp at the wheels and my butt dyno thinks its making a bit more than that now. Not as powerful as breathed-on MC or 20V 5-cylinder engine setup, to be sure, but way more than a stock and, perhaps best of all, the 1.8T is approximately 50lbs lighter and 3 shorter than the UrQ's original 2.1L engine
Perhaps you can see where Im headed with this: Pull the plug on my V8 swap and instead of selling the leftover 1.8T engine, swap that into the UrQ and sell the V8 setup instead. I could then use a 4-cyl. 4000 subframe (with slight modifications) to mount the engine in the UrQ instead of having to fabricate custom motor mounts; the extra room up front will make it easy to install a front-mounted radiator and a/c condenser (as was also done in 4-cyl. 4000s); I can tie into the OEM exhaust system rather than running dual pipes all the way to the back; because the PS pump is powered by a separate belt instead of the serpentine belt the V8 uses, I can just swap the OEM UrQ PS pump for the A4s Pentosin-based PS pump and not have to mess with swapping steering racks and hoses, etc.
well, the list goes on, but best of all, with some careful planning, I dont think any permanent modifications to the car will need to be made (it may look funny to leave them in place, but I think I can even work around the OEM motor mount brackets), so that when UrQs finally become collectible and trade in the six-figure range (hah!), I can reinstall all of the original parts and no one will ever be the wiser.
So, my question to this forum: Has this swap ever been done? How difficult will it be to adapt a Type 016 tranny to a 1.8T block (or, conversely, adapt the A4s 01A tranny to the UrQs chassis)? Is there anything Ive overlooked here (I understand there might be a problem with the A4s immobilizer setup, but if people can swap these engines into Rabbits and Golfs, there's obviously a way to work around this)?
Performance-wise, I think the engines power and torque curve will be at least adequate, especially with the ~200lb. weight savings as compared to my A4, and of course, theres more power available should I ever wish to spend the money. The shorter, lighter engine will be a plus for handling as well, as itll take some weight off the front end as well as lighten the car overall.
Am I onto something here or should I just install the MC2 out of the 89 200q Ill be parting out shortly? I'm certain that I dont want to reinstall the original engine, as I think its technology is just too outdated by comparison to the alternatives I have at my disposal and frankly, its time to finally face reality and accept that itll be years, if ever, before I have time to finish my V8 swap thanks to all the fabrication required and my limited resources in that regard.
As much as I enjoy driving (and autocrossing) my A4 as Ive said elsewhere, in its present state, its without a doubt the best handling Audi Ive ever owned or driven! Im still anxious to get my UrQ back on the road again, one way or another, and the more I think about it, the 1.8T swap becomes increasingly attractive.
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