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Mazworx | Anatomy of a 4.1L 1200+whp VQ Engine Build

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Old Jul 27, 2011 | 10:24 AM
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Default Mazworx | Anatomy of a 4.1L 1200+whp VQ Engine Build

We here @ Mazworx are building a monster VQ engine for our new engine program. In this thread you will see the step by step process to create this engine. We shall first start off with the cylinder head.

Here you see our port work. This is the exhaust side of the cylinder head.



Here is the combustion chamber opened up to match the bore 100mm and deshrouded. This process eliminates hot spots and reduces the chance of detonation.



All oil passages on the head are cleared, cleaned, and tapped for plugs



Cylinder head here is cleaned, ported and ready for machine work



Getting ready to install Supertech valve guides



Cylinder head clamped in the valve seat machine ready for machine work



Valve job being performed



Right valve shows the final deshrouding radius



With the valve open , the deshrouded valve has more space around it. This allows more flow. Using Supertech inconel exhaust valves.



A complete 5 angle valve job



Valve job on the head completed and ready for assembly



Getting ready to install the Supertech valve seals



OEM Spring seat, Supertech inner spring seat, Supertech valve seals installed



Installing the Supertech dual valve springs and titanium retainers.



Cylinder head being resurfaced



Once head is completed, we install a spark plug and the chamber volume can be measured.



We will be back shortly for the shots of the engine block work.
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Old Jul 27, 2011 | 10:28 AM
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Wow guys really excited to see what you can successfully get out of the VQ.... subbed
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Old Jul 27, 2011 | 10:43 AM
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Very cool, great pics!
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Old Jul 27, 2011 | 10:59 AM
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Sub'd!
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Old Jul 27, 2011 | 11:02 AM
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yup, same parts and method used to build my heads as well. You guys are using the 80lb double valve springs right? Which cams? If C9s, it will be cool to see how much machining you needed to do to make em fit. I didnt wanna mess with all that, along with the mechanical VTC stops.

for 1200whp, i assume you are using 62mm or bigger twins. Hopefully 67mm!! In house kit?

Last edited by str8dum1; Jul 27, 2011 at 11:07 AM.
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Old Jul 27, 2011 | 11:06 AM
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sub'd...this looks like fun to follow

nice work
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Old Jul 27, 2011 | 11:14 AM
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nice pics! sub'd!
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Old Jul 27, 2011 | 11:24 AM
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sub'd
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Old Jul 27, 2011 | 11:30 AM
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Originally Posted by str8dum1
yup, same parts and method used to build my heads as well. You guys are using the 80lb double valve springs right? Which cams? If C9s, it will be cool to see how much machining you needed to do to make em fit. I didnt wanna mess with all that, along with the mechanical VTC stops.

for 1200whp, i assume you are using 62mm or bigger twins. Hopefully 67mm!! In house kit?
Yes we are using the 82lb springs from Supertech. The cams will be custom grind from Kelford.

We will be using a Garrett 4718R

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Old Jul 27, 2011 | 11:41 AM
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WOW!!!!!!! Very very cool. Looking forward to results
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Old Jul 27, 2011 | 12:12 PM
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....that is a big turbo....damn
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Old Jul 27, 2011 | 12:18 PM
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nice! 1/2 sized radiator. Do you have 1/2 sized ac condensor as well?

a T6 88mm turbo is excellent! Are you building the manifold around a quick spool valve?

Why the garrett over say a ProMod88 or PTE 8884 billet?

Already see you built custom motor mounts to fit that beast. Did forward facing next to the radiator not work?
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Old Jul 27, 2011 | 12:22 PM
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Originally Posted by str8dum1
nice! 1/2 sized radiator. Do you have 1/2 sized ac condensor as well?

a T6 88mm turbo is excellent! Are you building the manifold around a quick spool valve?

Why the garrett over say a ProMod88 or PTE 8884 billet?

Already see you built custom motor mounts to fit that beast. Did forward facing next to the radiator not work?
This is actually not in a 350z, we have installed the motor into a 240sx.
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Old Jul 27, 2011 | 12:28 PM
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ahh no wonder why the battery box area looked soo small. LOL! even better!
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Old Jul 27, 2011 | 12:30 PM
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Originally Posted by mazworxracing
This is actually not in a 350z, we have installed the motor into a 240sx.
S chassis
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Old Jul 27, 2011 | 12:43 PM
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Subscribed, will be great to see the final product...
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Old Jul 27, 2011 | 12:50 PM
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What's you intention for this car?

Subscribed.
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Old Jul 27, 2011 | 01:44 PM
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Originally Posted by midz350
What's you intention for this car?

Subscribed.
This car is going to be strictly drag only. We are also currently building an exact setup for another customer in a 04 350Z
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Old Jul 27, 2011 | 02:06 PM
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Wow big Snail!!
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Old Jul 27, 2011 | 02:40 PM
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suscribed'
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