my turn
#41
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are you talking about the collector on the right in this picture?
the ports are smoothed out and it is gasket matched. and i am also an auto G so should be the same. so, you ported the lower plen too? im guessing that is where you got most of your gain from. ill send a pm
the ports are smoothed out and it is gasket matched. and i am also an auto G so should be the same. so, you ported the lower plen too? im guessing that is where you got most of your gain from. ill send a pm
#44
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if anyone has any flowbench info on any or all of the available intake manifolds, please post some numbers for the benefit of me and anyone else who may read this and find the info useful
#47
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as im looking around, i am finding na guys losing power in low to mid ranges but gaining only a tad bit up top with less power dropoff with a cosworth intake manifold. since the cosworth flows quite a bit more air than stock, i am wondering if that extra flow capability of the cosworth has an impact on the velocity of the air moving through the intake, which in turn affects the low to mid range negatively. kind of like having too big of an exhaust and losing velocity.
but then as you get into the upper rpms, the velocity is better in the cosworth since the motor is pulling more air
any thoughts on that?
but then as you get into the upper rpms, the velocity is better in the cosworth since the motor is pulling more air
any thoughts on that?
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edit: i see 19% increase on the heads, i was asking about the manifold
Last edited by mgrotel; 08-26-2011 at 08:27 PM.
#49
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here are a couple of pics of the manifold.
The blue is with 5/16 spacer and stock lowers
The red is with a 1/2 spacer and ported lowers with a stock top
here is the thread about the intake on driver.
http://g35driver.com/forums/intake-e...-manifold.html
The blue is with 5/16 spacer and stock lowers
The red is with a 1/2 spacer and ported lowers with a stock top
here is the thread about the intake on driver.
http://g35driver.com/forums/intake-e...-manifold.html
Last edited by denchan350gt; 08-27-2011 at 04:37 AM.
#51
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MREV on a non-revup with spacer do not show gains in the upper rpm like that hence the reason only a spacer is needed for a non-rev.
No one really touches the lower collector.
Also just switching from a 5/16 to 1/2 do not show topend gains like that either. The lowend and some of the midrange is the same as the 5/16 until 4500.
#56
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ok, either i am completely retarded or i have a mismatched set of cams. in the pic below, the ones on the left were the stock ones that came out. on the right are my bc stage 2 cams. i know there is a short and a long head, but it seems like i have 3 cams that would fit the long head and one that would fit the short head. am i losing my common sense or is something mismatched here?
edit:
edit:
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ok, im am ready to start putting it altogether, please list anything that i need to know what wont be in the fsm, things like
putting lube on head bolts to ensure proper torque
where to apply lube on the cams
what liquid gasket to use for timing covers
getting head to block surface very clean to prevent blown gaskets
etc.
i plan to take my time doing this, but just dont want to miss something that would be common sense to others.
thanks
putting lube on head bolts to ensure proper torque
where to apply lube on the cams
what liquid gasket to use for timing covers
getting head to block surface very clean to prevent blown gaskets
etc.
i plan to take my time doing this, but just dont want to miss something that would be common sense to others.
thanks