Here's a little part I designed to replace the injectors on Gixxer T/B to turn the fuel rail into a Vacuum source for the Brake Booster. I didn't like the idea of running it from just one cylinder. I might have them up for sale soon if people show some interest.

 

jb weld did the trick for me just fine.

and bought a vacume log from egay. much easier

 

for ingenuity.

However... I gotta ask... Why not just put some epoxy in the gixxer injector holes, tap them, drop in a fitting and use a regular vacuum log? *MUCH* cheaper than fabricating parts.

 

not when you have friends that do machining. I think it will look alot better than some JB weld too.
I don't know how JB would be easier either. It took me 5 mins to make the blueprints and then all I do is reassemble it.

Ps- Fabricating parts is cheap. It's having someone design it for you that costs bank. I've made a bunch of stupid things and gotten most made for free. S*it if you know someone in a high school machining class they could make this. It doesn't even need to be CNC'd

 

Notice I said epoxy, not jb weld. I agree. Jb weld ain't pretty

Here is a pic of a guy that used epoxy in other places on his itb setup :

https://honda-tech.com/zerothread?id=975931

If you can get the machining done for practically free, then sounds like a good route to go. I'm working on a set of cbr929 itbs as a side project. I've designed the flanges that I need, but have yet to find a reasonably priced place to make the flanges.

 

his setup looked pretty good. Only thing is I've read alot about people having problems running the injectors that far away from the head. I'll just use the stock injector placement with some 450's.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kommon_sense &raquo;</TD></TR><TR><TD CLASS="quote">Notice I said epoxy, not jb weld. I agree. Jb weld ain't pretty
</TD></TR></TABLE>

Actually I used jb weld and it came out really nice, I had the cbr throttle bodies, I put a dime in the fuel injector hole and poured the jb weld in, it really came out good and I never had a probably with it. You can kind of see it here




Modified by 90blackcrx at 12:52 PM 9/21/2004

 

see now you have your brake booster only pulling vacuum from one cylinder. I have a 15/16 MC and am running wilwood 4 pots and big rears so I don't want to take a chance with n oubooster

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by funkfnamna &raquo;</TD></TR><TR><TD CLASS="quote">his setup looked pretty good. Only thing is I've read alot about people having problems running the injectors that far away from the head. I'll just use the stock injector placement with some 450's.</TD></TR></TABLE>

Yeah, I've wondered about injector placement as well. I'm working with 929 throttle bodies. I'm considering using the 929 injectors and location and plugging those on the manifold. Also planning to run a vacuum log/canister with the booster attached there. Got a lot of other stuff to take care of first though

 

I hacked the manifold right behind the stock honda injectors, so i used my civic injectors, and closed the CBR (yes I used CBR ITB) holes.


with a little help from the dremel, this would look good.

and didnt someone mention the word ghetto in this thread. ohh yeah, its the title. JB weld or epoxy, both would work just as well.

 

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

Yeah, I've wondered about injector placement as well. I'm working with 929 throttle bodies. I'm considering using the 929 injectors and location and plugging those on the manifold. Also planning to run a vacuum log/canister with the booster attached there. Got a lot of other stuff to take care of first though </TD></TR></TABLE>
I think the 929's injectors might be a lil small. Also if your thinking of running them on the ITb's I've heard of people having problems with putting the injectors so far from the intake port. I figure the oem placement works so why change it

And Junkyard good point. ghetto works, as i've leard in many situations

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by funkfnamna &raquo;</TD></TR><TR><TD CLASS="quote">see now you have your brake booster only pulling vacuum from one cylinder. I have a 15/16 MC and am running wilwood 4 pots and big rears so I don't want to take a chance with n oubooster</TD></TR></TABLE>

1 cylinder is plenty, even with your set up.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by funkfnamna &raquo;</TD></TR><TR><TD CLASS="quote">I think the 929's injectors might be a lil small. Also if your thinking of running them on the ITb's I've heard of people having problems with putting the injectors so far from the intake port. I figure the oem placement works so why change it

And Junkyard good point. ghetto works, as i've leard in many situations</TD></TR></TABLE>

I plan to send a 929 injector to rc engineering to determine the flow to make sure that it can handle the civic. Also the 929 makes 150bhp and I'm doing this setup on a d16y8, so I think that they can handle it, but won't know for sure until I get it checked by rc. The cbr injectors have multiple laser drilled holes for fuel spray instead of the regular pintle style injectors. So I'm hoping that I can still get good fuel atomization using the cbr holes provided that I don't have them too far from the head.

I'm still a long way off from having a working setup

 

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

I plan to send a 929 injector to rc engineering to determine the flow to make sure that it can handle the civic. Also the 929 makes 150bhp and I'm doing this setup on a d16y8, so I think that they can handle it, but won't know for sure until I get it checked by rc. The cbr injectors have multiple laser drilled holes for fuel spray instead of the regular pintle style injectors. So I'm hoping that I can still get good fuel atomization using the cbr holes provided that I don't have them too far from the head.

I'm still a long way off from having a working setup </TD></TR></TABLE>
sounds like it might work out ok. maybe look into some s2k injectors. they are that same style and I know lots of guys that drag bikes round here use them.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Muaddib &raquo;</TD></TR><TR><TD CLASS="quote">I dont see how injector placement would be a detriment? If anything keeping the CBR injector placement would benefit. It would atomize better. What possible problems could that cause?
Also, its not wise to run a vacume off one runner, since vacuum is variable, it will be good when the pistons is moving down at the intake stroke, but after that you get a drop off in vacuum. Hooking up all 4 runners to one vacuum manifold is the best way to get strong vacuum, just like the stock IM.</TD></TR></TABLE> because ITb's have problems creating a vacuum when you place the injector farther away from the head you have problems drawing the fuel in. Also the intake ports are machined to accommodate the stock injectors. If you were going to run them on the ITb I would fill the the spots on the head and intake flange.

Also I noticed TWM's kit does pretty much the exact same thing I'm doing. w00t me!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by funkfnamna &raquo;</TD></TR><TR><TD CLASS="quote"> because ITb's have problems creating a vacuum when you place the injector farther away from the head you have problems drawing the fuel in. Also the intake ports are machined to accommodate the stock injectors. If you were going to run them on the ITb I would fill the the spots on the head and intake flange.

Also I noticed TWM's kit does pretty much the exact same thing I'm doing. w00t me!
</TD></TR></TABLE>

I wouldn't say itb's have a problem creating vacuum, I would say itbs have a problem with fluctuating vacuum.

 

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

I wouldn't say itb's have a problem creating vacuum, I would say itbs have a problem with fluctuating vacuum.</TD></TR></TABLE>
touche

 

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

Who me or the itb's

 

problem with fluctuating vacuum.