Thread: Mad man vnt kit any good?

Simmo has just done it.

http://www.aulro.com/afvb/90-110-130...ed-photos.html


Tony

Matt, hopefully I'll have a crack at a compound setup eventually using an MHI TD04-11G for the 'small' turbo and I'm not sure what for the larger one, but just have too much on the go ATM.

I think It'll give better bottom end than the VNT and a better spread right across the range.

I wouldnt mind one of their manifolds, i have a turbo already.

Originally Posted by rick130

Matt, hopefully I'll have a crack at a compound setup eventually using an MHI TD04-11G for the 'small' turbo and I'm not sure what for the larger one, but just have too much on the go ATM.

I think It'll give better bottom end than the VNT and a better spread right across the range.

It's that bottom end I'm after rick I just find it lacking and I'm going to low second where any other vehicle would lug along in first high just fine my mates qd32 navara leaves its for dead in the low down torque stakes

Originally Posted by 460cixy

It's that bottom end I'm after rick I just find it lacking and I'm going to low second where any other vehicle would lug along in first high just fine my mates qd32 navara leaves its for dead in the low down torque stakes

That's the big difference between Serg's 2.8 and my Tdi but once the Tdi is spooled up there's bugger all in it.

Originally Posted by rick130

Matt, hopefully I'll have a crack at a compound setup eventually using an MHI TD04-11G for the 'small' turbo and I'm not sure what for the larger one, but just have too much on the go ATM.

I think It'll give better bottom end than the VNT and a better spread right across the range.

I've got a (possibly slightly) easier plan for compounding the original turbo with a T28.
It should deliver 15psi by 1500rpm, could deliver 30psi by 2000rpm) with far better boost capacity and altitude compensation than a VNT. But I'm not hearing good things about the torque converter fitted to the automatic 300tdi and I need to order a new head first.

IMO compond should always outperform VNT. VNT is of course cheaper and more compact for OEM's. It also gives more control over EGR flow and emissions control.
But our goals are somewhat different.

Originally Posted by rick130

Matt, hopefully I'll have a crack at a compound setup eventually using an MHI TD04-11G for the 'small' turbo and I'm not sure what for the larger one, but just have too much on the go ATM.

I think It'll give better bottom end than the VNT and a better spread right across the range.

Got a compressor map for the 11G? I was going to overlay it on the compound calcs I've got, but I can't find one.

Originally Posted by Dougal

Got a compressor map for the 11G? I was going to overlay it on the compound calcs I've got, but I can't find one.

I've never been able to find one.