Intake Manifold

[DTEK]

Sydney Kid FTW

Why Side feed?

Because the standard R33 Injectors are Side Feed. :S

I am implying that once at this level of mod where the stock intake manifold is totally inadequate, we might have top mount injectors and bigger throttle bodies.

R

BTW. The response time in this forum is very fast.

[Bass Junky]

People want these things for stock cars too.

It's half dress up and half the theory of reducing piping

[infected flow]

LOL... You crack me up. We aren't bypassing them...I hadn't looked closely at all at the unit till a 2 days ago. The casting will be the same at the base. Wow...for a bunch of guys who have an engine that forces them to route pipe all over their engine bay in an unattractive manner you sure are skeptical. Or you can keep on cutting up manifolds and welding them together...till you run out of manifolds.

Thanks for your help anyway.

R

u have no idea buddy goodluck with it ...oh and here's another thing there are throttle bodies already on the market so untill u can actually prove anything i suggest u do a lot more research. here's your competition so the product has to be up to standard...

1. GREDDY

2. PLAZAMAN

3. HYPERTUNE

4. MICKSMETAL CRAFT

5. JUN

there's other brands also but cant think of the names so far...but the ones ive mentioned are pretty much the leaders in plemun's....sorry if ive missed anyone...

also bass junky there is no point havin it adapt to the standard traction control unit as it is more of a hinderence, when u reach higher power levels the traction control is no good due to flow rectriction...tried and tested on r34 with neo engine i meant..

cheers

[Bass Junky]

Yeah I know about the higher power levels thing.

I turn my TC off everytime I get in the car, but, from a marketing point of view, it's good to be able to make everything work together, plus I'm not sure what happens if you remove the TCS throttle body with the computers...

Also, nobody has yet thought of trying to adjust the amount of throttle closure that the TCS system.... Maybe modifying the signal to that could introduce a much more sophisticated traction set up.....

Something I've been thinking about recently.

[infected flow]

Yeah I know about the higher power levels thing.

I turn my TC off everytime I get in the car, but, from a marketing point of view, it's good to be able to make everything work together, plus I'm not sure what happens if you remove the TCS throttle body with the computers...

Also, nobody has yet thought of trying to adjust the amount of throttle closure that the TCS system.... Maybe modifying the signal to that could introduce a much more sophisticated traction set up.....

Something I've been thinking about recently.

i removed the tcs system and the slip and tcs light are always on thats it no problems anywhere else..u could always take the speedo out and remove the lights behind the slip and tcs so it doesnt bother you but up too you i suppose .trying to explain without going into way too much detail..umm haha geez you make it hard but from memory it has 2 butterflies where the tcs system is and when it detects slip the butterfly will close and cut revs..right now what some people have done it actually put a straight pipe through it so no closure this is still retaining standard everything and it works....

you could give that a go ..

but there's no point if your going to get in the car and keep turning it off or if u have an aftermarket plenum...

[R31Nismoid]

I am implying that once at this level of mod where the stock intake manifold is totally inadequate, we might have top mount injectors and bigger throttle bodies.

I would not make that assumption, its a very very bad one.

You have got to remember, a portion of customers are going to be the 180/SX platform with RB conversions etc. If you cut that market out your limited before you even begin the game.

Most must use a front facing (as opposed to stock) due to clearance issues more than anything else.

So they will be using stock T/B, stock rail setup in most cases.

I mean, i ran off some great figures on the stock gear (plenum & T/B, fuel rail) and since then people have made more and more... IMO the stock T/B is quite adequate for many applications, as is the stock injector rail setup.

Do you even know the limits of the stock gear? I pushed it over 350rwkw without an issue... so thats above the majority of skyline owners demographic to begin with.

Also, injectors *for the most part* are all direct change over with the stock rail.

Why change the fuel rail/injector setup when you dont have too. Its added cost that most people are not willing to encounter.

And another thing, skyline owners by definition dont have a lot of money *for the most part*.

So its budget mods, cost vs gain. If you force people to change T/B's and injector setup... you will hardly sell anything but to the people with oodles of money.

I dont think you have put enough thought into it as have missed many many things.

I've spent all of 5 mins and i've come up with the above, so im sure there is more points

[Sydneykid]

You really need to have provision for BOTH side feed and top feed injectors. Because:

1. Guys who want/have to do a plenum change, but who want to use the standard side feed injectors. Bonnet clearance reasons and the usual budget constraints.

2. Guys who have already upgraded to aftermarket side feed injectors. For obvious reasons they don’t want to have to go out and buy top feed injectors

3. Guys have don’t have the budget to buy aftermarket side feed injectors, top feed injectors are much easier to get, new or used and cheaper

4. Guys who can’t find the right sized side feed injector for their power target, so they need to use top feed injectors.

5. Guys (like me) who have heaps of RB26 top feed 444 cc injectors that would work great in 260 to 280 rwkw applications. ie; spend the money on a plenum instead of injectors.

It won’t be that hard. A set of alloy o’rings to adapt the top feed injectors to the inlet manifold and a set of spacers for the top feed fuel rail. The manifold itself doesn’t have to be different. When you order you specify “side feed injector” style or “both”, the “both” option costs a bit more of course. That would give you a USP (unique selling proposition) which no one else offers.

cheers

[r32gt_rb20]

Sydney Kid always come with good information and rational.....

nice one bro..

[discopotato03]

Just to throw in a wildcat what does everybody think of adapting someone elses OEM Inline 6 manifold to the RB20/25 ? Probably little chance of any component carry over but we just may find that OEM millions spent developing a manifold that works may be able to be grafted on to fix this over cam cover TB business .

Does anyone know for example if any of the Toyata X MGE or 1/2 JZ manifolds can be adapted . I believe they are opposite way around to RB but any potential to cut/shut mix/match bits to make something up ?

This probably sounds a little crazy but I'd much prefer an OEM plenum design over the glitzy sheet jobs that fit but are of unknown quantity .

Sorry folks , too much blood in my caffine supply .

Cheers A .