Okay, I got the concept of Vtec 100%. What I want to know is. What are butterfly in GSR? I hear that alot. People talk about Vtec engage'n at 4.4 for GSR and butterfly opens up at 5.5. Can someone enlighten me? I want to know from BOTTOM to TOP how GSR motor goes from Vtec to butterfly and what is the horse gain out of it. Thank YOU!

 

long runners are good for the low rpms
short runners are good for the high rpms.

the butterfly valve moves and closes the long route and creates a shortcut. That's all.

Think of it like a train swapping tracks with one of those device thingys

 

oo nice... THANKS!

 

like this! (railroad switch is what they're called)


hondas all about that dual function ****,if they ever made pants, they would put zippers just above the knees to make them into shorts

 

My God I'm so ADD. I'm gonna go read up on trains now. Trains are badass.

This concludes my GSR intake manifold TRAINing

 

Sadly I can't explain it better but do u'd think u could offer hima better description of what the 2ndary butterfly is if he just now is understanding vtec...

 

The GSR engine has a snail looking intake manifold. Within the manifold are valves, which we call butterflies or secondaries (aka butterfly valve). When the engine is running below the rpm for the engagement of secondaries, air travels a longer, top route of the manifold. This is allow more mid-range torque. However, at higher rpms, a solenoid cuts the vacuum to the manifold and the secondaries or butterfly valves open to allow air to take a shorter direct route to the head. This shorter direct route would be the bottom route. The shorter route allows air to come quicker inside the combustion chamber and allows the engine to "breathe".

 

oh dear.. its 4400RPM for VTEC (which you don't feel in a GSR at all) then 5750RPM for IAB's (which u hear screaming) it's all good fun - doesn't matter what you're going to put in that EM1 of yours D, haha

 

well mine kicks in at 4400 its like bahhhhhhhhhhhhhhhh BAHHHH!!!! and it feel like its slowing down lol and then its like a hardcore PULL around 5500

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">Sadly I can't explain it better but do u'd think u could offer hima better description of what the 2ndary butterfly is if he just now is understanding vtec...</TD></TR></TABLE>

Correction! I completely understand the concept of a B16 Vtec without a DOUBT! Just not familiar with GSR's butterfly.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlueIntegraBoy &raquo;</TD></TR><TR><TD CLASS="quote">The GSR engine has a snail looking intake manifold. Within the manifold are valves, which we call butterflies or secondaries (aka butterfly valve). When the engine is running below the rpm for the engagement of secondaries, air travels a longer, top route of the manifold. This is allow more mid-range torque. However, at higher rpms, a solenoid cuts the vacuum to the manifold and the secondaries or butterfly valves open to allow air to take a shorter direct route to the head. This shorter direct route would be the bottom route. The shorter route allows air to come quicker inside the combustion chamber and allows the engine to "breathe".



</TD></TR></TABLE>


Great explanation!!! Thank you for putting out thee time to explain that to me!

 

how many plugs and what color wirers

 

very nice description. i wasn't aware of the "butterfly" either, and i have a gsr. But i do feel it at about 4500. very nice very nice.

 

so in the runners of the GSR intake mani its split in half(horizontally) all the way to the head? where are the secondaries located, where the runners actually begin from the throttle body portion of the manifold?

 

So which one is the solenoid that controls that and how do you wire the vacumm lines and wires? sorry nood question...

 

BlueIntegraBoy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by k20rex &raquo;</TD></TR><TR><TD CLASS="quote">how many plugs and what color wirers</TD></TR></TABLE>

One plug, wire colors vary pending on year, trigger signal varies from obd1 to obd2 (obd1-ecu gives or releases ground to solenoid, obd2-ecu gives or releases power to solenoid)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bsixteen &raquo;</TD></TR><TR><TD CLASS="quote">so in the runners of the GSR intake mani its split in half(horizontally) all the way to the head? where are the secondaries located, where the runners actually begin from the throttle body portion of the manifold?</TD></TR></TABLE>

if you look at the third pic that BlueIntegraBoy posted you'll see a vacuum valve (round, 90degree barb on top, shaft coming out bottom). The shaft coming out of the vacuum valve is connected to the "secondaries". If you remove the outer "plenum" section of the IM you'll see what looks like four small throttle bodies. I've got one layin around, I'll see if I can take it apart and take pics...

 

Wow i just noticed on my motor that i don't have that drum looking vaccum valve connected. where does the top and bottom connect to?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ATrin &raquo;</TD></TR><TR><TD CLASS="quote">Wow i just noticed on my motor that i don't have that drum looking vaccum valve connected. where does the top and bottom connect to?</TD></TR></TABLE>

The top goes to the vacuum canister under the manifold, there should be a check valve on the way to the canister. The bottom lever connects to the secondaries.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by miahmouse &raquo;</TD></TR><TR><TD CLASS="quote">

The top goes to the vacuum canister under the manifold, there should be a check valve on the way to the canister. The bottom lever connects to the secondaries.</TD></TR></TABLE>

cool thanks!