DIY ITB's CBR1000RR in a dc2r

[tofu R]

Disclaimer: The following is provided as a GUIDE ONLY, and neither myself nor Ozhonda take any responsibility for the outcomes of someone else doing the following. You follow these steps at your own risk!





I initially got the idea of home made itbs from this website
DIY ITBs

and I had been throwing up the idea of itbs for a long time ..
as spending over 1k on a mugen intake .. really didnt do it for me ..

Now a major disclaimer.. don't take any of the stuff im saying here as gospel,
cos i am a DIY retard, and the major point of the project was ..
budget.. as well as the sound of these things at VTEC =p ..

Anyone to start first issue of the day .. was what ITBs to use?
after a lot of research i came up with the following..
highlighted are the pro's and cons of what i found..



Now i ended up choosing the CBR1000RR

main reasons for this ..

- Honda Technology (can't go wrong with the Honda is god mentality)
- nice spacing already ..
- Honda TPS that is similar to the B series tps
- 44mm Butterfly..

[tofu R]

Which brings me to my next point ..
Butterfly size..
there were larger alternatives .. as u can see the Hayabusa ITBs came in at largest with 46mm butterfly size..
but once again .. with a bit of research and expanding on information i got from www.jenvey.co.uk ..
i came up with the following data..



Now i am only aiming for 140kw atw.. (stock bottom end..)
so i thought it would be sufficient with a 44mm butterfly..

The main ingredients that i used in this concoction were

- JDM itr intake manifold
- CBR1000RR throttle bodies
- Unifilter Box Filter
- www.velocityofsound.com velocity stacks/trumpets..

I'll start off with the JDM ITR intake manifold..

I got this for a STEAL .. as some guy had plumbed some extra injectors into the back of a jdm itr manifold..
I had actually firstly intended the itbs to look sometihng like this


but i wanted to retain as much of the manifold as i could
ie injector bungs .. and even the injector mounting points..
so what we ended up with ..
was a chopped intake manifold ..
that had to be welded and a plate fitted and rebored and honed ..
and it ended up looking like this..







which i must say i was very happy with ..

I then reused the adaptors that originally came with the cbr1000rr itbs
looks like this



The filter that i picked up was not a bad price either.
$150 for a pre-oiled and fully caged and boxed filter..

i opted totally against the regualar use of itb socks.. as they really disturb the flow of the velocity stacks..

I then reused the adaptors that originally came with the cbr1000rr itbs
looks like this





and the current state of them ..
This is by no means finished.. im still working on finishing up the port matching of the black bits to the IM flange
and also port matching the IM itself..
as well as well as roughing up the insides to a nice even grit ..
as well as the whole vacuum log business..
and ill be sure to put up a vid once this is all done ..
Hope you enjoyed =)



and a mandatory show off pic of the car its going into =p






Disclaimer: The following is provided as a GUIDE ONLY, and neither myself nor Ozhonda take any responsibility for the outcomes of someone else doing the following. You follow these steps at your own risk!

[.::F[L]Y::.]

damn..thats awesome man!

how much is it costing you for this project?

also i like what you did with the front bumper

[CUL8R]

looking good bro!
what do a set of huyabusa itbs cost these days???says the man that never knew to begin with. lol

i know u didnt use huyabusa, but i assume u checked it out

[tofu R]

a set of busa ITBs go for around 400 bucks with no tps or injectors..

but i didnt get them cos they were too exxy ..

[ian]

hmmmmm.............interesting.....very interesting.

i'd like to hear that scream at 12500rpms?.....hahaha

[ginganggooly]

Nice work mate. I can't wait to see the results. That plus your killer head combo should make some very interesting times.

[Icegroove]

Nice!

Props to you...

I am also wondering the cost of your setup?

[Limbo]

looking very good would like to see wat it does on the dyno

[hero]

if you dont mind me asking.. how much have u spent and how much of the work did you actually do?

looks very very expensive for a diy

[ProECU]

Nice work Eric, extremely impressive.

[fatboyz39]

Looks good mate. I personally wouldn't build my own quads. I would just buy ones off shelf plug and play.

HAve you figured out you gonna run ur vaccums? MAF sensor? TPS?