Quads?

[Bigelboe]

Heres a bit of a teaser for a project coming up, these just arrived from good ol' North Carolina






They are off an '06 CBR600RR and the TPS and injectors are plug and play with OBD0+ looms

And no, I didn't put this in the wrong topic

[nemesisteg]

dirty?? lol cool tho.. im thinking NOS?? or plenum on the quads??

[Moclov]

Surely nitrous...?

Air being forced through a set of quads would be a lot different (read: pointless) than air being sucked through a set of quads wouldn't it?

[Coupe-R]

Yeh I would have thought so, however check out a GTiR pulsar

[Bigelboe]

GTiR pulsar and Skyline GT-R both run boosted individual throttle bodies

It lets you get the best of both worlds. Awesome throttle response of a nice small plenum NA car because there is little damping from the small amount of throttled charge, strong midrange from good charge velocity(because I chose appropriately sized ITB's) and wicked top end from benefits of the better mixing from the injector placed furthur back, and the increased flow.

They are 38mm throats, good for around 180hp N/A and whatever you want FI.

Im going to run a centrally fed log plenum which should help even up cylinder filling. The middle two will get more than in an end fed because thats where the feed will point to a certain extent, and the end two always get more in a plenum so that should even it out, without me having to spend large amounts of time on the flow bench ballancing my runners.

I think my idle and low down should be better compared to N/A cars with ITB's because the motor will have all the plenum, turbo piping, the turbo and the air filter all to pull a decent vacuum against, not like N/A cars just with some velocity stacks. And plus I didn't just go for the biggest ITB's I could find, in fact I went for the smallest. I think a lot of the poor low down people experience with ITB's on here is because they go too big, you can make 220 NA HP on a 42mm ITB setup...

[nemesisteg]

cant say ive ever noticed ITB's on GTR's

[Bluetech]

Some "purdy" pictures for your consideration ....... GTR inlet plenum.

[chuckles2]

Originally Posted by nemesisteg

cant say ive ever noticed ITB's on GTR's

they definatly do, alot of people remove them and use a grredy or similar intake manifold with 1 big Throttle body.

[nemesisteg]

yeah thats probably why, in all honestly i havent ever really studied a GTR setup entirely

[Bigelboe]

Originally Posted by chuckles2

they definatly do, alot of people remove them and use a grredy or similar intake manifold with 1 big Throttle body.

yeah a lot of people remove them because its too expensive to upgrade them to another set of ITB's

Thats an interesting simulation, I would be very interested to see what software package that was simulated in.

[nzcivicracer]

Originally Posted by Bigelboe

Thats an interesting simulation, I would be very interested to see what software package that was simulated in.

Not sure about the top picture, but the bottom ones look like SolidWorks & Flow Works

[Bigelboe]

Yeha it does, I just realised what the first one is in too, its using Vectis made by Ricardo. We are trying to wangle a lincence for it at uni atm

[Coupe-R]

Im sure the stock GTR intake manifold could take MASSIVE HP. People get greddy ones for motors like RB20 and RB25 which have the TB over the motor not front facing like the greddy.

Less intercooler piping that way, and better intake manifold

[Bananaman]

Wondered how long it would be before I saw someone on here with a set of those.

Dad has 3 sets that he was playing with for the drag car. (none of them have got the thumbsup at the moment because he wants to run a single large throttle body for a top secret intake setup

[Bigelboe]

If you have access to a flow bench and a lot of time, you will make more power with a plenum setup, but I think you could probably make ITB's more streetable with less development time.

[doo0T!doo0T!]

KEIHIN's, nice!, are they OEM? They're usually aftermarket. Keihin make beautiful carbs but they are big $$$$.

Me wanty.

I was going to go the same route for my next engine but I've decided to use a V6 legend single TB on a blox style mani which I'm making.

[Bigelboe]

If you have access to a flow bench and a lot of time, you will make more power with a plenum setup, but I think you could probably make ITB's more streetable with less development time.

[NAspirated]

Originally Posted by doo0T!doo0T!

KEIHIN's, nice!, are they OEM? They're usually aftermarket. Keihin make beautiful carbs but they are big $$$$.

All CBR's run Kei-Hin throttle bodies, not exactly flash stuff. Ducati quads, now THOSE are nice.



personally i dont like Honda's quad design/setup, but for FI they'll work just fine.

[Bigelboe]

Originally Posted by doo0T!doo0T!

KEIHIN's, nice!, are they OEM? They're usually aftermarket. Keihin make beautiful carbs but they are big $$$$.

Me wanty.

I was going to go the same route for my next engine but I've decided to use a V6 legend single TB on a blox style mani which I'm making.

Keihins are fairly Standard Honda fair, funnily enough my factory throttle body is Kehin, so Im replacing Kehin with Kehin

Originally Posted by NAspirated

All CBR's run Kei-Hin throttle bodies, not exactly flash stuff. Ducati quads, now THOSE are nice.

personally i dont like Honda's quad design/setup, but for FI they'll work just fine.

Care to share your misgivings with the Honda Quads? The only fault I have with them is the airbox flange isn't that nice.

[doo0T!doo0T!]

Originally Posted by Bigelboe

Keihins are fairly Standard Honda fair, funnily enough my factory throttle body is Kehin, so Im replacing Kehin with Kehin

Care to share your misgivings with the Honda Quads? The only fault I have with them is the airbox flange isn't that nice.

I'm only going buy their carbs I've seen, a mate bought a set of slide carbs with electronic TPC senders on them and they were like $500 a piece second hand and he thought he's got a steal.

[xsiv]

i have got a simmlar setup to the aftermarkit gtr setup, with a large TB




should do well for a FI setup
look simmlar to a quade setup.
here the ebay listing if any one intrested
just thougth it be a slightly cheeper option for any one looking
http://cgi.ebay.com/ebaymotors/INTAK...QQcmdZViewItem

[NAspirated]

Originally Posted by Bigelboe

Care to share your misgivings with the Honda Quads? The only fault I have with them is the airbox flange isn't that nice.

They dont use Tapered runners, apart from on the CBR1000's; the flange is fuckin heinous; the bodies cant be separated so your manifold design is going to look like ass unless you spend decent money or know how to fabricate one; last i checked the throttle plates were not centrally located in the bodies (not an issue for FI); they use tiny injectors (height wise) which made fuel rail mounting modifications necessary; then theres the manual idle up screw (crap-throw it away) and the lack of decent Vac points..

there was a couple of other things i didnt like but i cant remember, been a while since i had a set to look at.

the best thing however is the mounting rubber connectors on the front. they are gold, makes mounting to your manifold real easy. actually, i think ive still got 2 or 3 if youre missing any.

[Bigelboe]

Originally Posted by NAspirated

They dont use Tapered runners, apart from on the CBR1000's;

Mine taper from about 42-43mm at the inlet to 38 at the outlet, not massive but better than nothing.

the flange is fuckin heinous;

Sure is Thats where CNC comes in.

the bodies cant be separated so your manifold design is going to look like ass unless you spend decent money or know how to fabricate one;

You can seperate them into pairs which could help a little. They are almost exactly the right spacing for the D-series boys in the states, which is quite handy. I will be making my own manifold for these.

last i checked the throttle plates were not centrally located in the bodies (not an issue for FI);

The eyecrometer tells me that these ones are centrally mounted, if they are off its by a very small amount, ~1mm, not sure if this has an impact?

they use tiny injectors (height wise) which made fuel rail mounting modifications necessary;

Supposedly you can get standard Honda upgraded injectors to fit with minor modifications althogh I havnt looked into this myself. Not sure what the deal with the fuel rail is, it looks fairly crazy.

then theres the manual idle up screw (crap-throw it away) and the lack of decent Vac points..

Yeah that screw system is pretty basic, will probably go to an IACV system instead.

the best thing however is the mounting rubber connectors on the front. they are gold, makes mounting to your manifold real easy. actually, i think ive still got 2 or 3 if youre missing any.

Those are very nice, Im just hoping they will hold the boost and weight of the plenum hanging off them.

[NAspirated]

thats interesting, the 600's and 750's i had didnt taper at all. the 1000's had a very nice taper, but not as good as the Gixxer's ive got now.


splitting into two helps yes, but not as good as individually. really depends what engine your using them on and how you want your manifold designed i guess. i didnt want mine to "turn" like the factory runners.

for FI your alright, as your going to use a manifold off that stupid fuckin flange. i tried fabbing up some Stacks and hated the way they came out every time. useless for NA, looks stupid everytime.

the only factory injectors ive seen fit them without modification are the RDX injectors (or whatever the fuck it is). the fuel rail is actually really good, nice and large, light too. better than a B series anyway.

the rubber connectors should hold boost, its the weight of your plenum that will be the issue, use a bracket to help hold them up and youll be sweet.

[Andrew]

Originally Posted by Coupe-R

Im sure the stock GTR intake manifold could take MASSIVE HP. People get greddy ones for motors like RB20 and RB25 which have the TB over the motor not front facing like the greddy

I'm sure they make good power, but the Heat Treatments GTR uses an off the shelf Trial (I think) single 100mm throttle body manifold, making over 1500hp... Nice piece of useless information