Review: Motordyne M370 Manifold w/ Comparisons

Staples · 12-06-2012, 03:24 PM

Good to hear it's working out very everyone! A tune is definite to really get those mid-range numbers and to get some of the top end back.

Zoren 370 · 05-01-2013, 08:48 PM

Why modify the HR350 manifold and not the OEM 370 intake manifold?
R we saying the 350Z manifold is much better than the 370Z? Just asking out curiosity.

DEpointfive0 · 05-01-2013, 09:15 PM

Quote:

Originally Posted by Zoren 370

Why modify the HR350 manifold and not the OEM 370 intake manifold?
R we saying the 350Z manifold is much better than the 370Z? Just asking out curiosity.

The runners on the 370Z manifold have longer runners which is where the air is shoveled into the engine. Longer runners=higher peak HP, and in the car game, peak HP is the name of the game, no matter how unusable it may be.
So the 350Z HR's manifold has shorter runners losing peak HP by 2-4HP, BUT the total area under the curve is increased dramatically.

I personally make a 350Z HR manifold conversion and what is being done is redrilling 4 holes to make it align to the 370Z, THEN adding a top plate to add pressure because you cannot bolt up the modified manifold... (Sounds a bit easier that it really is)

Cutting a 370Z manifold with a hot knife then going about modifying would take so much R&D work and time and effort, you might as well mold a new one of out plastic, lol

gomer_110 · 05-01-2013, 09:35 PM

Quote:

Originally Posted by DEpointfive0

The runners on the 370Z manifold have longer runners which is where the air is shoveled into the engine. Longer runners=higher peak HP, and in the car game, peak HP is the name of the game, no matter how unusable it may be.
So the 350Z HR's manifold has shorter runners losing peak HP by 2-4HP, BUT the total area under the curve is increased dramatically.

I personally make a 350Z HR manifold conversion and what is being done is redrilling 4 holes to make it align to the 370Z, THEN adding a top plate to add pressure because you cannot bolt up the modified manifold... (Sounds a bit easier that it really is)

Cutting a 370Z manifold with a hot knife then going about modifying would take so much R&D work and time and effort, you might as well mold a new one of out plastic, lol

Anyone got a 3d printer?

edub370 · 05-02-2013, 09:01 AM

Quote:

Originally Posted by gomer_110

Anyone got a 3d printer?

made a blitz blow off valve with a rapid prototyper in college. punctional piston and all

picture does this piece no justice

Staples · 05-02-2013, 04:07 PM

Quote:

Originally Posted by edub370

made a blitz blow off valve with a rapid prototyper in college. punctional piston and all

picture does this piece no justice

It looks like a bar of soap, I would definitely rock it in my shower.

But seriously, it looks bad @$$.

Sh0velMan · 05-01-2013, 10:13 PM

Quote:

Originally Posted by DEpointfive0

The runners on the 370Z manifold have longer runners which is where the air is shoveled into the engine. Longer runners=higher peak HP, and in the car game, peak HP is the name of the game, no matter how unusable it may be.
So the 350Z HR's manifold has shorter runners losing peak HP by 2-4HP, BUT the total area under the curve is increased dramatically.

I personally make a 350Z HR manifold conversion and what is being done is redrilling 4 holes to make it align to the 370Z, THEN adding a top plate to add pressure because you cannot bolt up the modified manifold... (Sounds a bit easier that it really is)

Cutting a 370Z manifold with a hot knife then going about modifying would take so much R&D work and time and effort, you might as well mold a new one of out plastic, lol

Got that part backwards, just so you know.

The HR runners are much longer, giving them a lower resonant frequency and thus tuning them to lower RPM.

The VHR runners are shorter and fatter, tuned for high end peak HP for dat marketing, yo.

DEpointfive0 · 05-01-2013, 10:24 PM

Quote:

Originally Posted by Sh0velMan

Got that part backwards, just so you know.

The HR runners are much longer, giving them a lower resonant frequency and thus tuning them to lower RPM.

The VHR runners are shorter and fatter, tuned for high end peak HP for dat marketing, yo.

Lol, yep, sorry, it's been a LOOOONG 2 days with no sleep due to the GF and going to the hospital to see how my grandpa is doing

Sh0velMan · 05-02-2013, 07:28 AM

Quote:

Originally Posted by DEpointfive0

Lol, yep, sorry, it's been a LOOOONG 2 days with no sleep due to the GF and going to the hospital to see how my grandpa is doing

GF? Pics or it didn't happen.

12-06-2012, 03:24 PM	#1 (permalink)
Staples Track Member Join Date: Sep 2010 Location: Baltimore, MD Posts: 546 Drives: '08 Infiniti G37s Rep Power: 17	Good to hear it's working out very everyone! A tune is definite to really get those mid-range numbers and to get some of the top end back. __________________ '08 Infiniti G37s - Forced Induction Fed

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05-01-2013, 08:48 PM	#2 (permalink)
Zoren 370 A True Z Fanatic Join Date: Mar 2012 Location: FL Posts: 11,018 Drives: 11 Nissan 370 M6 Rep Power: 1913655	Why modify the HR350 manifold and not the OEM 370 intake manifold? R we saying the 350Z manifold is much better than the 370Z? Just asking out curiosity.