Thread: Big bore VVL input needed

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2010-02-16 21:48:26

#111

Daves_sr

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nice figures who did your head work jamie?

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92 b13 jdm sr20de......Crashed
93 b13 usdm sr20de....$old
91 b13 t25 sr20det.....$old
92 b13 jdm SR20VE!!...Forever

Originally Posted by morgans432

you dont build a car to please other people you do it for your own personal enjoyment...

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2010-02-16 21:49:37

#112

Daves_sr

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btw does anyone know the weight difference between the ve crank and the de crank off the top of their head? thanks

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92 b13 jdm sr20de......Crashed
93 b13 usdm sr20de....$old
91 b13 t25 sr20det.....$old
92 b13 jdm SR20VE!!...Forever

Originally Posted by morgans432

you dont build a car to please other people you do it for your own personal enjoyment...

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2010-02-16 21:54:12

#113

SR20GTi-R

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Originally Posted by se-riousjdm

nice figures who did your head work jamie?

2 friends out west hooked me up.

One is a mad-man named Charles Dundon.

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Tired..of the bullshit.

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2010-02-16 22:05:21

#114

B12NISMO

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Originally Posted by DDSC
It will really depend on the head work of the build. With any na engine you will always be restricted by what the head can flow. This is why some na ve's on this forum are already putting out more than 40+ year old v8 with over double the displacement. Lucky for the big bore guys when you open the bore out you can achieve much more flow.

Nice to know that....

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91 Sentra XE-R in progress almost done. All motor setup.

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2010-02-16 22:45:01

#115

DDSC Performance Online/offline status of DDSC Performance is unknown

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Originally Posted by SR20GTi-R

380-390 cfm on the intake

268-280 cfm on the exhuast

These are the figures that were reached with the 2 heads we have for our builds. Re-spect and I both went over sized on vavles and had the cc machined to mimic a 90mm bore.

I will get the head specs from a friends k24 build to compare.

not too bad. I assume +2mm or +3 on the intake and at 28 inches h20 at .500lift?

Yeah with the bigger bore you get to deshroud the valves and physically fit bigger valves. There can be downsides to too much flow if everything is not working right. I assume this heads for the 2.4 you mentioned earlier? Sounds like a cool build

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2010-02-17 00:04:56

#116

SR20GTi-R

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Originally Posted by DDSC
not too bad. I assume +2mm or +3 on the intake and at 28 inches h20 at .500lift?

Yeah with the bigger bore you get to deshroud the valves and physically fit bigger valves. There can be downsides to too much flow if everything is not working right. I assume this heads for the 2.4 you mentioned earlier? Sounds like a cool build

You are correct. +2, +1.

These will go on both 2.4's.

The only thing left to tackle are the cams that we will use.
We may try 184c's until the custom grinds are done.

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Tired..of the bullshit.

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2010-02-19 04:12:58

#117

sr20venosfreak Online/offline status of sr20venosfreak is unknown

El Amansa Honda