I'm installing the ventilation system for a new Mustang dyno at a VW/Audi tuner, and was looking at a narrow-angle vee motor that they were building. Was thinking that it seems like a pretty awesome setup for producing a lot of motor in a small package. My primary concern would be if the clustered cylinder arrangement allows adequate breathing.That and the fact that it's a VW....
What's the skinny on these? And has anyone worked up a RWD tranny setup for them? Will they bolt up to an Audi transaxle for a longitudinal middie config?
Do you mean the VR6? The VR5 was a failed experiment that never left overseas markets.
In reply to SlickDizzy:
So what's in a 2.5 Rabbit?
Here's the easy button: http://www.jegs.com/i/Quick-Time-Bellhousing/698/RM-4082/10002/-1?parentProductId=2834600 That is if $644 is easy on your wallet. I'm always a little skeptical with how Quicktime/Lakeland label their bellhousings. I'd call them first before ordering.
D'oh! Too bad I can't edit the heading! Yes, I mean the VR6.
pres589 wrote: In reply to SlickDizzy: So what's in a 2.5 Rabbit?
An inline five.
Very odd. I thought these really were the VR5 but searches says you're right. Hrm.
in regards to the vr6 from what ive heard they are decent engines, respond to boost pretty good. ive seen a few rwd swaps into stuff, not sure the trans though. 034 motorsports put one in a audi a4 with a turbo, pretty sure it shared the bellhousing bolt pattern with the trans
All i care about is that they look cool, and sound incredible. 
Where's Paul_VR6 when you need him? 
Swank Force One wrote: All i care about is that they look cool, and sound incredible.
Still no F2T though 
turboswede wrote:Swank Force One wrote: All i care about is that they look cool, and sound incredible.Still no F2T though
Totally different.
F2Ts look awful and sound worse.
BTW, according to the Wiki's:
http://en.wikipedia.org/wiki/List_of_discontinued_Volkswagen_Group_petrol_engines#2.3_VR5_110-125kW
Volkswagen Group removed a cylinder from the VR6 in 1997 to create the VR5 (aka 'V5'), the second block to use an uneven number of cylinders in a Vee design after the Honda V3 triples of MotoGP fame. This version, which had a 2.3-litre capacity, was capable of 110 kilowatts (150 PS; 148 bhp), and had a maximum torque of 210 newton metres (155 lbf·ft). It was introduced in the Passat in 1997, and the Golf and Bora in 1999.
So they did exist, but were rare and appears to be only available in Europe.
Swank Force One wrote:turboswede wrote:Totally different. F2Ts look awful and sound worse.Swank Force One wrote: All i care about is that they look cool, and sound incredible.Still no F2T though
Good point. Much like my beloved Chrysler 2.2/2.5L's
the VR6 is nothing new...
Behold the Lancia "V4"
Lancia had been building Narrow Angle V engines since the '20s
mad_machine wrote: the VR6 is nothing new... Behold the Lancia "V4"
I have a 1.3 on a stand right next to me. VERY cool motor. Super compact. The cast iron cylinder portion of the block makes them heavier than they should be but still awesome. REally bratty exhaust note
Combining some threads.
VR6 with a Vortech V9. I want that. 
http://youtu.be/ToyrRuAxQeo
pres589 wrote: Very odd. I thought these really were the VR5 but searches says you're right. Hrm.
The Rabbit engine (07K) is the new longitudinal swap favorite. Almost as short as a four so tons more intercooler room in an old Audi, and the head outflows heavily ported old-style 5cyl engines. And a lot lighter, too.
Knurled wrote:pres589 wrote: Very odd. I thought these really were the VR5 but searches says you're right. Hrm.The Rabbit engine (07K) is the new longitudinal swap favorite. Almost as short as a four so tons more intercooler room in an old Audi, and the head outflows heavily ported old-style 5cyl engines. And a lot lighter, too.
Do you happen to know what bellhousing shape it uses? Or rather what transmission they're using? 01A/01E/016 etc.
Swank Force One wrote:turboswede wrote:Totally different. F2Ts look awful and sound worse.Swank Force One wrote: All i care about is that they look cool, and sound incredible.Still no F2T though
The HKS exhaust I had helped a lot.
From what I have been told, it is most of the 4 cylinder bellhousing. (So no 016 transmissions unless you get a super rare 4cyl typ85 80 Quattro trans from Europe. (All typ85 quattros sent to North America were 5 cylinder, and were called 4000 not 80)
Supposedly to mate an 01E you have to cut off a chunk of the top of the bellhousing for cam chain case clearance. This should be trivial since it was a common mod to the 016s so you could more quickly remove the trans for those 15 minute side-of-the-road trans swaps. I would imagine the procedure would be the same for an 01A but nobody really bothers with 01As.
For more 07k info, go to theprojectpad.com where the main 07K madness instigators hang out.
Burrito Enthusiast wrote:Knurled wrote:Do you happen to know what bellhousing shape it uses? Or rather what transmission they're using? 01A/01E/016 etc.pres589 wrote: Very odd. I thought these really were the VR5 but searches says you're right. Hrm.The Rabbit engine (07K) is the new longitudinal swap favorite. Almost as short as a four so tons more intercooler room in an old Audi, and the head outflows heavily ported old-style 5cyl engines. And a lot lighter, too.
The VR5 should use the same pattern as the VR6 so one of 034's adapter should get you to using and 01x derivative in no time.
I'm not sure if we're talkin about the same motors though.
I was speaking of the inline engine, not the VR5.
Some people like to point out that the Rabbit/Jetta 2.5 is half of a Gallardo engine. This amuses me, because it means that a Lambo is subject to the same super-cramped engine design (88mm bore center? Really?) that VW has suffered for decades as a result of compromises made in the early 70s to fit an inline four longitudinally in front of the front axle in the Dasher.
So now you know why VW engines have always had such small bores and long strokes... can't really go more than 83mm before the cylinders get all co-spatial. That goes for all non VR engines except for the 4.2 V8s, where they opened up the bore spacing but kept the old cylinder heads, so the chambers weren't centered over the bores anymore...
Thank you. That was a very informative and worthwhile summary. A+, would read again.
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