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- Engine Performance (https://www.miataturbo.net/engine-performance-56/)

- - B6ZE head flow chart (https://www.miataturbo.net/engine-performance-56/b6ze-head-flow-chart-64803/)

B6ZE head flow chart

Can anyone give me a flow chart of the B6 ?
I searched the entire Internet and found nothing.

Never mind,found it.
Engine flows 178 cfm @ 7200 rpm.

Dang, I was hoping that you had a head flow chart! :(

Quote:

Originally Posted by DanielzZz (Post 858458)

Never mind,found it.
Engine flows 178 cfm @ 7200 rpm.

Where did you come up with this number?

I'm not sure what you were looking for in a flow chart, but that number to me has little value, and does not sound correct. A flow chart is what you get from a head porter, like this one. This head has extensive port work and larger valves, sorry I dont have one for stock flow values.

https://www.miataturbo.net/attachmen...ine=1333550805

Going though the data this 178 CFM at 7200 rpm sounds about right for the stock motor.
which would put it in the ball park of 77 to 80% engine load at 7200

Alta.. Decent flow numbers from that head.

Be nice to have the stock flow to see what kind of increase was made.

Quote:

Originally Posted by BogusSVO (Post 858816)

Alta.. Decent flow numbers from that head.

Be nice to have the stock flow to see what kind of increase was made.

Can you produce flow charts? I have a spare 01 VVT head sitting in my garage. I might possibly be interested in having it flowed while it is stock.

Quote:

Originally Posted by shuiend (Post 858829)

Can you produce flow charts? I have a spare 01 VVT head sitting in my garage. I might possibly be interested in having it flowed while it is stock.

I have numbers from my VVT head stock and worked.
The flow values are at 10" water, CFM wet air followed by dry air.

Code:

Intake Port Original   Intake ported 34.0mm

 1.0mm   16.2  16.4     19.7  20.0

 2.0mm   35.7  36.3     41.0  41.7

 3.0mm   51.4  52.2     59.3  60.2

 4.0mm   69.8  71.0     75.3  76.6

 5.0mm   84.8  86.2     91.1  92.6

 6.0mm   99.6 101.3    105.6 107.3

 7.0mm  108.8 110.6    117.1 119.1

 8.0mm  114.9 116.8    126.2 128.2

 9.0mm  118.1 120.1    133.2 135.4

10.0mm  120.7 122.7    138.0 140.3

11.0mm  122.3 124.3    141.7 144.0

12.0mm  121.4 123.4    145.0 147.4

13.0mm  121.5 123.5    145.6 148.0



Exhaust Port Original  Exhaust ported

 1.0mm   12.5  12.7     12.5  12.7

 2.0mm   27.0  27.5     29.3  29.8   

 3.0mm   44.3  45.0     48.0  48.8 

 4.0mm   60.5  61.5     65.1  66.2  

 5.0mm   77.8  79.1     82.5  83.9

 6.0mm   89.8  91.2     92.2  93.8   

 7.0mm   95.9  97.5     98.0  99.7   

 8.0mm   99.1 100.7    102.8 104.5 

 9.0mm  100.9 102.     105.7 107.5 

10.0mm  102.7 104.4    109.9 111.8  

11.0mm  104.1 105.8    113.3 115.2 

12.0mm  105.2 107.0    115.9 117.8 

13.0mm                 118.2 120.2

You can "convert" the number to 28" H2O (e.g. http://mustangpartstech.com/General_...onversion.html, a factor 1.67)

Another reference showing the same
https://www.miataturbo.net/attachmen...ine=1333621183

Quote:

Originally Posted by Alta_Racer (Post 858786)

I needed the engine's flow in cfm to calculate the pressure ratio for my turbo setup.Judging by my calculations,a GT2259 turbo will be less laggy for a 250rwhp setup than the GT2560.