VTT turbo outlet pipes to intercooler inlet mismatch?

[pbondar]

I’ve bought these puppies

N54 Aluminum Turbo Outlet

Looking to get the most efficient turbocharger operation out of your N54-powered BMW? The best way to do this is to remove all restrictions from the inlet and charge the tract. The factory charge pipe has a very small 1" opening and a poorly designed Y section that couples the two banks into one...

vargasturbo.com

Which I now see states finishes in a 2.5 inch outlet..

I have a Wagner Evo 1 performance inter cooler I canabalised from a previous project which has ‘stock’ inlets…

BMW E8x E9x EVO1 Performance Intercooler Kit

Performance Intercooler Kit EVO1 BMW 135i

www.wagner-tuning.uk

Question …do I have a mismatch issue and if so how do I solve it?

All this on a Z4 E89 35is …

 

[Krampus]

I'm not quite sure what you mean, but the connector rubber is moved from the original outlet.

 

[pbondar]

Hi yours is a VSRF which I think has a 2” outlet so should work ok..mine is the VTT with a 2.5” outlet…hence my query..

 

[Krampus]

The thin tubes from the turbos are 1.5" on the VTT and 2" on the VRSF. In both, the pipes connect to a 2.5" pipe and this goes to the intercooler. The VRSF outlet will not fit a RHD car because the pipe diameter is larger. I didn't measure mine when I installed the outlet, but this is how I understood what information I found.

 

[pbondar]

I think this puppy may work for me?

HPS 2 - 2-1/2" ID, 6" Length, Silicone Charge Air Cooler CAC Hose Double Hump Reducer Coupler Bellow Hot Side, Ultra High Temp 4-ply Aramid Reinforced, 51mm - 63mm ID

HPS High Temp 2" - 2.5" ID , 6" Long 4-ply Aramid Reinforced Silicone CAC Coupler Hose Hot Side Charge Air Cooler Bellow 63mm 51mm exceed SAEJ20 standards, ideal for marine and industrial use, custom turbo or intercooler piping fabrication, DIY intake or radiator cooling system.

hpsperformanceproducts.com

 

[pbondar]

I had an epiphany last night…I think the wagner Evo 1 inlets at 2” are based on an internal connector..I hope the external dimension will be approx 2.5”..I’ll find out when I start stripping things down..

 

[wheela]

I had an epiphany last night…I think the wagner Evo 1 inlets at 2” are based on an internal connector..I hope the external dimension will be approx 2.5”..I’ll find out when I start stripping things down..

Since the evo1 has the stock style connectors, do you still have your old stock intercooler to take some measurements from? If not, I've got my stocker on a shelf in the garage (i'm also running EVO1), if you want I could take some pics and measurements for you. Just let me know

 

[pbondar]

Since the evo1 has the stock style connectors, do you still have your old stock intercooler to take some measurements from? If not, I've got my stocker on a shelf in the garage (i'm also running EVO1), if you want I could take some pics and measurements for you. Just let me know

Hi I have the stock one too..but that definitely can only click a hose inside the intakes as , as you know it’s plastic ends…I’m hoping the Evo 1 external diameter intakes are close to 2.5” then all I need is a new double hump 2.5 short hose..

 

[wheela]

Hi I have the stock one too..but that definitely can only click a hose inside the intakes as , as you know it’s plastic ends…I’m hoping the Evo 1 external diameter intakes are close to 2.5” then all I need is a new double hump 2.5 short hose..

Yeah, I guess you're right - I was thinking that the OD of the connections were the same, but looking through my old pics the OD's are very different.