^^yup...about the only advantage i can see is quicker throttle response of the 4 itb's...
i would see it being a huge restriction like turbomopargod said.
for a normal srt street setup a 55-62mm throttlebody is just fine for all 4 cylinders.
now think about how small a throttle body is going to be for each cylinder (as long as its a 37r or smaller turbo imo, more of a street practical setup)
now with a smaller TB, the throttle plate and shaft will be in the way of airflow for each TB
I almost think 4 TB's on a turbo car would be a restriction due to 4 tb plates and 4 tb shafts in front of each runner vs. 1 tb plate and 1 tb shaft at the end of an intake manifold. Think about it.
true...but i think if you had a good enough fabricator and design...it could be done...i just done see it being worth the cost
__________________
Texas' first DCR SRT TT 11.30@126.02
Forever Tuned by Mark Riley
531hp 450tq 5 spd
420hp 400tq 3 spd auto
Quote: Originally Posted by stowaway
Dear mightyxwhitey53,
You have received an infraction at SRT Forums - SRT4, SRT6, SRT8, SRT10 & Dodge Forum.
Reason: Bashing a 'tard
actually they are really complicated to tune correctly.. a friend of mine Dennis from hybrid dynamics did several articles about it in modified mag.
none of the RB series motors come with individual throttle bodies.
especially a forced induction motor, like said before it just complicates things.
i dont see a benefit to running a single intercooler pipe to each cylinder.
if there was a benefit to it everbody would be doing it, and it would have been done on the pro forced induction nhra 4 cylinder style cars several years ago
Please don't spread mis-information if you don't know or never seen a stock GTR r32-r34 then don't tell him he's wrong, they do come with ITB's.
ITB's are a thing of the N/A world it's just not worth the hassle in a F/I car when you can just up the boost and get the same benefit, it's not that it won't work.
Why re-invent the wheel?
actually they are really complicated to tune correctly.. a friend of mine Dennis from hybrid dynamics did several articles about it in modified mag.
none of the RB series motors come with individual throttle bodies.
especially a forced induction motor, like said before it just complicates things.
i dont see a benefit to running a single intercooler pipe to each cylinder.
if there was a benefit to it everbody would be doing it, and it would have been done on the pro forced induction nhra 4 cylinder style cars several years ago
yes rb26 motors have itb's, alot people convert to a single q45 t/b
get it right
only 2 pics of my friends swap i could find of the motor, this is when it was stock:
ok 1st off i didn't say anything about rb20 motors.
2nd the pics of the rb25/rb26 motors have aftermarket intake manifolds which goes back to my previous statement about alot them being converted to a single t/b
3rd look and this pic that you posted, you see that little bracket on top of the intake? thats what opens all the butterflies in what?.........the individual throttlebodies.
worked on a rb26 huh? what did you do change the air filter?
and you watch who you call a dipshit just because you came on here acting like you knew what you were talking about, and got called out on it.
Last edited by aww sheet : 11-16-2008 at 07:20 PM.
3rd look and this pic that you posted, you see that little bracket on top of the intake? thats what opens all the butterflies in what?.........the individual throttlebodies.
all along i thought you were talking about individual runners and TB's...i thought you ment they dont use a intake plenum and would run a intercooler pipe to each TB.
sorry for the misconfusion.
they still use a conventional intake plenum which is what i was getting at...
i would see it being a huge restriction like turbomopargod said.
for a normal srt street setup a 55-62mm throttlebody is just fine for all 4 cylinders.
now think about how small a throttle body is going to be for each cylinder (as long as its a 37r or smaller turbo imo, more of a street practical setup)
now with a smaller TB, the throttle plate and shaft will be in the way of airflow for each TB
Individiual runners "show" more benefit to NA engines where tuning specific pressure resonances is key to top performance, but they would also benefit a turbo car similiarly. A turbo will more easily mask a poor design.
There would be no "restriction"
On a 2.4L the tb diameter should be around 36mm-42mm. Thats obviuosly a considerable increase in tb area over a single 60mm tb, since each port has its own.
Tuning NA is a little bit of a chore because the lack of a plenum volume allows the MAP signal to pulse with each cylinder stroke, mostly just at sub-baro pressures. A plenum acts to dampen expansion waves which keeps the fuel map steady . I've tuned a GSXR(600cc, N/A, itb 34mm tb) with an aftermarket EFI and it wasn't that big of a deal.
__________________
"Just because someone goes fast doesn't mean you should do whatever you think they did.
This path assumes they knew what they were doing, which isn't necessarily the case"..........RB Racing
Last edited by duster360 : 11-16-2008 at 10:09 PM.
not realy in puerto rico thats what most people use in there old school cars....and this guys run 8 secs all day.............but they run webers not itb....
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11.30@126.02
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