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This still seems crazy to me i know of a few vr6 powered cars in the UK an the engines are well good for nothing apart from a slight v6 sound.
I mean why did audi stick with the v6 when they could have used the vr6.
This still seems crazy to me i know of a few vr6 powered cars in the UK an the engines are well good for nothing apart from a slight v6 sound.
I mean why did audi stick with the v6 when they could have used the vr6.
Like the Q7 and TT-3.2 right?
VR6 motors are like the dot that completes a sentence. Once you learn to use them, they become a part of life!
1981 URQuattro with the TIAL GT35r.
2007 Infinity g35
So as far as moving the alternator, I know the crank is constantly driven and the driveshaft isn’t. the car is not going to be a street car, its really going to be a trackcar that I will get registered and inspected, not to be driven much on the street, we live out in the woods and would mostly be street driven for diagnostic purposes and the occasional hell ride of fun!! The car will spend almost no to zero time idling and not moving. I think it would be better for balance still to run the full sized alternator and fullsized battery in the back, the battery would be able to support the very short amount of time where the alternator may not be spinning.
Ok , so first paragraph you say moving the accessories is a good indea in any Quattro car, the second paragraph, you say moving parts around to manipulate its bias ISNT a good idea. So which is it? Hhaha
Ok so onto the motor decision, yes the 20v/24v will start making power at a similar usd/hp ratio. The 12v can do it but its becomes more expensive. Isn’t chris at USP in florida running a 12vT on e85?
When is the last time anybody here made 550whp on a bone stock 8v, 16v or 20v motor picked off the junkyard floor for 60 USD? I have yet to find a 20vt for that coin, yet I saw 3 of them with under 100k miles already pulled on the floor hte last time I went to the junkyard. All I would have to do is put them in a back of a truck and drive home.
Yep, access to decent priced, powerful engines is on a different level in the US. Over here, VR's etc were a lot less common, and junkyards charge an arm and a leg, sometimes more than new parts cost at the dealer. I have fond memories of rolling out to Pick n' Pull and get 8v goodies like 9A trannys, dual outlet manifolds, GTI heads, etc for basically nothing.
BTW, do you live in SLC?
1995 RS2 on Alcohol (6.8sec 100-200km/h)
1994 80E Avant
1986 2L Golf 2 on Alcohol
Yeah, I am in SLC. If the vr6 still costs as much over there as a 20vt, it is a terrible idea to ditch a good thing for another good thing. Over here, the motors are disposable and sold as scrap.
I think audi stayed away from the vr6 early on for the same reason they ditched the 5 cylinder 20vt. The general public does not even know these two configurations are possible. When you build a high dollar car around a powerplant, 95 percent of the human population will pick a v6 over a vr6 just because they have heard of a v6. VW even tried to help them understand the vr6 by saying it is a "narrow angle" v6. How many times have you told somebody what is in your s2 only to have them say " you can have 5 cylinders and still be smooth?" When the Audi fell upon hard times in the early nineties, they went uber safe with NA v8s, sucky 12v v6's and a high tech, but fuel sipping 20vt i4. IT was a better move to develop the v6 as that would sell more cars for Audi.
That doesnt mean the v6 is a better motor than the vr6. They are just for two different market segments. I personally would rather have a b5 s4 with a 3.2L vr6 24v. Audi could have done it in 2000 with a r32 motor, and had the same 250hp that the s4 had. A Biturbo v6 sells more cars and it is a marketing tool. You were paying 55 grand for a fancy a4 because it had 2 turbos!!!!!!!
1981 URQuattro with the TIAL GT35r.
2007 Infinity g35
i was also suckered into a twinturbo a4, now itll be 2.8L 24v vrT!!!! sooooo much more engine aby room, ease of access etc
oh hank you dont want a 3.2L the cylinder walls crack all the time, search that , they crack rght at the bottom of the cylinders, its a bored 2.8 block
Haven't even bothered to read the previous posts as the one item that comes to mind is why?
The VR6 is an awful engine unequal flow distribution from front to rear cylinders by as much as 10-12%. Rear cylinders always run lean whilst front three are busy borewashing. But it's ok as the lambda says all is fine being the average of two evils.
Add a short runner inlet manifold to it and you compound the problem as you no longer have the unequal runner distribution in the stock manifold which is VAG's remote attempt at them trying to resolve a major f up in cylinderhead design. Put a supercharger on them and you are gauranteed to bend the heads of the valves ever so slightly due to the restrictive exhaust ports. Stick a turbo on them and anything close to 400hp at the flywheel on a stock head and you start to get seized piston rings on the rear three cylinders.
Long and short of it why take one of the best engines out of a car to replace with a turd?
Stick a turbo on them and anything close to 400hp at the flywheel on a stock head and you start to get seized piston rings on the rear three cylinders.
This seems to contradict the reality of many >400 whp VR6T's running around
Haven't even bothered to read the previous posts as the one item that comes to mind is why?
The VR6 is an awful engine unequal flow distribution from front to rear cylinders by as much as 10-12%. Rear cylinders always run lean whilst front three are busy borewashing. But it's ok as the lambda says all is fine being the average of two evils.
Add a short runner inlet manifold to it and you compound the problem as you no longer have the unequal runner distribution in the stock manifold which is VAG's remote attempt at them trying to resolve a major f up in cylinderhead design. Put a supercharger on them and you are gauranteed to bend the heads of the valves ever so slightly due to the restrictive exhaust ports. Stick a turbo on them and anything close to 400hp at the flywheel on a stock head and you start to get seized piston rings on the rear three cylinders.
Long and short of it why take one of the best engines out of a car to replace with a turd?
Wow.... You are joking right?
There are literally thousands of 400hp-plus 12v vr6 engines out there, and that is not getting into the 24v that makes 400hp without a sneeze. There exists hundreds of 500whp 12v's that log thousands of miles each year.
Can you site a legit source for the 10-12% difference between the front and back cylinders?
1981 URQuattro with the TIAL GT35r.
2007 Infinity g35
Haven't even bothered to read the previous posts as the one item that comes to mind is why?
The VR6 is an awful engine unequal flow distribution from front to rear cylinders by as much as 10-12%. Rear cylinders always run lean whilst front three are busy borewashing. But it's ok as the lambda says all is fine being the average of two evils.
Add a short runner inlet manifold to it and you compound the problem as you no longer have the unequal runner distribution in the stock manifold which is VAG's remote attempt at them trying to resolve a major f up in cylinderhead design. Put a supercharger on them and you are gauranteed to bend the heads of the valves ever so slightly due to the restrictive exhaust ports. Stick a turbo on them and anything close to 400hp at the flywheel on a stock head and you start to get seized piston rings on the rear three cylinders.
Long and short of it why take one of the best engines out of a car to replace with a turd?
hahahahah wow im astounded at the ignorance ive found here for a motor you cant seem to know much about
where to start
well first of all the flow and AFR differences can be properly engineered to not be a problem at all, and secondly no one said anything about a short runenr intake manifold, a bit of good fab work and you can still have the proper intake manifold design for the offset in VR heads.
and wow, restricted exhaust ports can bend valves, havent heard that one beforehahahahahahah
um yeah a turd, do you have any links or real info not BS regarding your guess on flwo differences
is your country completely unfamiliar with the 24v vr unit? everyone instantly jumped to the 12v conclusion, well damn thats not what im even using
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