DANS FORGED TURBO BB4

Post by **Thebusofwoe** » Mon Oct 06, 2014 10:20 pm

When you see/speak to him next, please could you ask if he's still doing mapping/rolling road tuning. Cheers

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Mon Oct 06, 2014 10:21 pm

http://www.dnrtuned.com/
Says still does tuning

Post by **Merlin** » Tue Oct 07, 2014 9:03 am

ddoubledanny wrote:I'm using the standard m2b4 gearbox and LSD is that going to be ok do you think

If I were you, and if time and funds allowed, I would look at getting a U2Q7 or a M2F5 with a Quaife diff.

Post by **ddoubledanny** » Tue Oct 07, 2014 10:40 am

Merlin wrote:
ddoubledanny wrote:'m using the standard m2b4 gearbox and LSD is that going to be ok do you think
If I were you, and if time and funds allowed, I would look at getting a U2Q7 or a M2F5 with a Quaife diff.

What would be the benefits over the m2b4

Post by **Merlin** » Tue Oct 07, 2014 10:55 am

Massive. This is my opinion. I suggest you read up on it

.

The M2B4 is not much better than an OEM non-LSD open diff. Under normal driving the viscous diff in the M2B4 acts like an open diff. Only when one wheel spins excessively more than the other does the diff "lock". It reacts to a spinning wheel rather than trying to stop it in the first place.

With a torsen style diff (found in the U2Q7, Quaife) it puts the power down much better. As soon as torque is unequal between the shafts/wheels the torsen diff will shift the power to the wheel with the most traction. IMO this will be much better for you as you will be dealing with a lot of power and torque. With this diff you should feel the car being pulled round the corner.

A broad comparison:

howstuffworks.com wrote:Torsen is superior to the viscous coupling because it transfers torque to the stable wheels before the actual slipping occurs.

http://auto.howstuffworks.com/differential6.htm

If you are interested watch this guys vids on viscous, torsen and clutch pack diffs, they are very interesting

https://www.youtube.com/channel/UClqhvG ... w3R48t9QXQ

I have a clutch pack diff in my 4G and it transformed/dominates the car

Having a good diff makes a lot of difference.

89 UKDM BA4 4WS (resto job!) · Post by **wurlycorner** » Tue Oct 07, 2014 10:55 am

The standard LSD is better in the U2Q7 than the M2B4 and the Quaife diff is better again according to those wot know.
You'd stand a much better chance of getting the power down safely/usably with the improved LSD.

EDIT: Wot Merlin said

bennyboy · Post by **bennyboy** » Tue Oct 07, 2014 10:57 am

I have nowhere near as much power as you're looking at and the U2Q7 made a MASSIVE difference to cornering grip on my car.

Post by **Merlin** » Tue Oct 07, 2014 10:57 am

wurlycorner wrote:You'd stand a much better chance of getting the power down safely/usably with the improved LSD.

This is what it ultimately boils down to

Post by **ddoubledanny** » Tue Oct 07, 2014 11:04 am

I will have to look into this thanks guys.

106pete · Post by **106pete** » Tue Oct 07, 2014 11:43 am

I would have thought the u2q7 was to short on the ratios for a boosted car, just get a m2a4 and fit a quaif diff and maybe even a longer 5th to go with it?

Lude Generation

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