K-series: custom intake manifold w/ 105mm TB
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K-series: custom intake manifold w/ 105mm TB
It is 99% complete. Lance just needs to finish the cable pull and we'll see what happens next week on the dyno. This particular configuration and throttle placement is specifically for our 2672cc dev motor in an EG/EK. The plenum configuration is modular so we can put the TB pretty much anywhere within reason, space allowing. We fully expect throttle response off idle to pretty much suck. That's okay, we're not interested in that for this round of testing. So for all the street application guys wondering if they could run this setup, the answer is yes but with something more appropriate for your particular engine/race class requirements.
More discussion about how this project came to life is here in the all motor forum:
https://honda-tech.com/zerothread?id=1370345
I think at some point we'll test this on our Turbo dev motor against the ITB's w/ Plenum picture above. Of course, we'll resize the 105mm to something more conducive to IC charge pipes! So that's why I felt it would benefit posting about it here as well for those who don't frequent the all motor section.
-Ron
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From: Mechanicsville VA
Re: K-series: custom intake manifold w/ 105mm TB (G"UNIT)
that thing just seems like alot of over kill...... but I am not going to say 100% because I have never seen someone with that big of a TB 
...... I mean I have a friend who made 840whp on a 75mm TB and friends who have made 600+ on stock
...... I mean I have a friend who made 840whp on a 75mm TB and friends who have made 600+ on stock
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Re: K-series: custom intake manifold w/ 105mm TB (BoostedEG6)
If we can get a GT45R, we'll be running it as-is. If not, then we'll step down the TB down to 80mm. Using the 105mm is an attempt to get similar flow to our ITB's in the all motor street class where the rules stipulate having a single TB. Our 2672cc motor lost 40hp going from ITB's to an intake manifold with stock TB.
105mm is huge, but at least it's all downhill from here and we'll have fun swapping the TB's out trying smaller bores step by step collecting data as we go.
-Ron
105mm is huge, but at least it's all downhill from here and we'll have fun swapping the TB's out trying smaller bores step by step collecting data as we go.
-Ron
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Re: (Tad)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tad »</TD></TR><TR><TD CLASS="quote">i dont c the point
i mean if you're running heavily compressed air into the engine, why do you need alot of space to move it?
it's compressed!</TD></TR></TABLE>
When the intake manifold gets repurposed for Turbocharged duty, we'll step down the TB to 80mm bore.
The 105mm TB is for NA use in an attempt to provide flow comparable to our ITB's. In our NA testing on the 2672cc motor, we lost 40hp by going to an intake manifold with stock TB. If we wanted to run this motor in the street all motor classes, we can't run ITB's but have to run an intake manifold plenum through a single TB.
As I said previously, if we can get a GT45R - the 105mm TB may actually be useful on our 2415cc turbo dev motor.
-Ron
i mean if you're running heavily compressed air into the engine, why do you need alot of space to move it?
it's compressed!</TD></TR></TABLE>
When the intake manifold gets repurposed for Turbocharged duty, we'll step down the TB to 80mm bore.
The 105mm TB is for NA use in an attempt to provide flow comparable to our ITB's. In our NA testing on the 2672cc motor, we lost 40hp by going to an intake manifold with stock TB. If we wanted to run this motor in the street all motor classes, we can't run ITB's but have to run an intake manifold plenum through a single TB.
As I said previously, if we can get a GT45R - the 105mm TB may actually be useful on our 2415cc turbo dev motor.
-Ron
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Re: (Turbo9Nut)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Turbo9Nut »</TD></TR><TR><TD CLASS="quote">Why would you put the TB in the middle? From the way it looks, the #2 and #3 will get more air than #1 and #4. Just wondering.</TD></TR></TABLE>
Running a single TB on an intake manifold isn't ideal for equal distribution. This is our attempt at trying to make it better. In the stock orientation wouldn't #4 get more than #3, #2 and finally #1? That's why there's a taper in the plenum shape, correct? Well as you can see on ours, we have two tapered ends that will try to do the same thing. Regardless, it's not going to be perfect. So you're right to a certain extent, but just remember it's difficult to overcome while working with a plenum manifold in various TB placements and orientation.
-Ron
Running a single TB on an intake manifold isn't ideal for equal distribution. This is our attempt at trying to make it better. In the stock orientation wouldn't #4 get more than #3, #2 and finally #1? That's why there's a taper in the plenum shape, correct? Well as you can see on ours, we have two tapered ends that will try to do the same thing. Regardless, it's not going to be perfect. So you're right to a certain extent, but just remember it's difficult to overcome while working with a plenum manifold in various TB placements and orientation.
-Ron
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