Best_Mufflers Best Mufflers specialises in fabricating custom exhaust systems, custom headers, custom extractors and high performance exhausts systems which can be made to suit almost any application. I have been fabricating exhaust systems since1983,with plenty of experience and only using quality exhaust system products, only top quality workmanship with customer service is guaranteed.
Best Mufflers Custom Exhaust Specialists
Best MufflersMaserati Gransport Custom Headers and Exhaust System

headers Maserati Gransport Headers
4.2ltr V8

  • Custom Headers [Stepped Design]
  • 1 5/8" to 1 3/4"
  • Water Filled Primary pipes for exact length
  • Tig Welded
  • Tuned Length
  • 3" Outlet
  • Twin 2 1/2" System
  • Factory Rear Muflers Reused

 

Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

Original right hand side manifold/cat removed
[looking from the front]

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

Our new headers hopefully will exit from the rear if room allows. Not sure if right hand side pipes will fit until completed including egr. One thing for sure to change oil filter the right side header will need to be removed
[looking from rear]

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

Original left hand side manifold/cat removed,
[looking from the front]

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

Left side has plenty of room
[looking from rear]

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

Because of the limited room available we start the right side first so when headers are complete both the left and right headers are the same lengths, this image shows no 1 pipe and no 2 pipe clamped into postion just to see if they can be removed from the rear of engine.
Right side [looking from front]

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

Looking from the top, its now possible to see how much room is left to connect to the primary pipes [1 3/4"]. This assembly is now removed back to the jig

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

I use two hose clamps with two small pieces
of tube to hold pipes together

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

Allows full adjustment
before welding

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Once back on the jig connecting the
primary pipes [1 5/8"] to the secondary
pipes [1 3/4"] will be much easier which
would be impossible on the car

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

Once bolted to the jig pipe supports are made and tacked welded in position, this ensures once these pipes are disassembled they can only be refitted in the same position

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust SystemWater filled for exact length

Each primary [1 5/8"] pipe is water filled
to ensure exact length

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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Primary and secondary pipes are tacked together, first pipe is tacked welded to header flange then fitted to car to ensure correct clearances. Once checked, pipe is removed from flange then next pipe is tacked to flange and again fitted to ensure correct clearances, this process continues until all pipes fit perfectly.

Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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All pipes are the tack welded to header flange, at the collector end we have only clamped pipes together as i,m still not sure if all pipes welded to the header flange will fit into engine bay.

Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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After removing steering rack, sway bar and other various items, completed pipes somehow fit. steering rack, sway bar are again refitted to check clearances.

Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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Only adjustment required
was to change position of the negative earth
cable from 12 o,clock to 9 o'clock

 
Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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Looking from the top

 
Best MufflersMaserati Gransport 4.2ltr V8 Custom Headers and Exhaust System

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All hoses are well clear of all pipes without any modifications [looking from top]

 
Best Exhaust
Maserati Gransports custom headers

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Left hand side, No 1-2-3
primary pipe in position

 
Best Mufflers & Exhaust Systems
Maserati Gransport Custom Headers

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Air conditioning pipe was adusted slightly
to allow extra clearance

Best Mufflers & Exhaust Systems
Maserati Gransport Custom Headers

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No modifications to factory heat shielding was required to create any extra clearance on both sides

Best Mufflers & Exhaust Systems
Maserat Gransport Custom Headers

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Best Mufflers & Exhaust Systems
Maserati Gransport Custom Headers

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Completed headers back from ceramic coaters
ceramic coating reduces exhaust temp.
After running for around 10 minutes at the collector
is 55 degrees, directly after collector 175 degrees
These pipes will keep engine bay much cooler.

 
Best Mufflers
Maserat Gransport Custom Headers

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Check Engine Light Fixes have been installed,
these have built in miniature Euro 3 cat converters
built in to prevent check engine issues, they are not just to remove sensor from gas flow, not sure if they will work but definatley worth a try. After first start up no check engine light

Best Mufflers
Maserati Gransport Custom Headers

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Best Mufflers & Exhaust Systems
Maserati Gransport Custom Headers

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Best Exhaust Systems
Maserati Gransport Custom
Exhaust System Twin 2 1/2

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Best Mufflers
Maserati Gransport Custom X Pipe
with interlocking flanges

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Flanges are interlocking to ensure
smooth gas flow [no gaskets are required]

Best Exhaust
Mazerati Gransport Custom Exhaust
Twin 2 1/2

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Best Exhaust Systems
Original Rear Mufflers
have been reused

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Original Rear Mufflers
have been reused, no power gain
would be achieved by changing these.

   
   
Maserati Gransport Custom Headers
   
   
 

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