Been trying to justify going 2.5" Intake piping lately. Have my eye on the AMS 2.5" kit, but it doesn't seem to include one of the most important pieces. The short bit of pipe that actually bolts up to the Turbo, the bit with the Flange. This piece: http://www.amsmotorsports.com/shop/ind/300zx-z32/forced-induction/ams-2-5-stealth-black-aluminum-z32-intake-pipe-kit.html Am I mistaken or does this kit not come with a replacement piece? If it doesn't, isn't that a pretty big oversight? From taking a closer look at those pipes, they hardly seemed designed for flow. Anyone have any idea where we can get better after market ones? See also below for a better picture of the pipes I'm referring to. MoulaZX
no they dont 2.5 kit is from turbo to throttlebody ashspec makes the intakes or Mungyz might make them
MSP made some but I'm not sure they ever got released. On my phone right now so can't search for ya but you should be able to dig something up.
I've made some in the past and have all the parts in stock to make more BUT they are tricky to make as you need to be EXTREMELY accurate as there are only millimetres of clearance. I posted up an idea that should help with the pipes fitting with various turbos and manifolds etc but even still they are tricky to make (haven't even bothered with my own ones - yet!). Ash has improved his design and that should help with fitting. I can make some up for you if you like but might be best to get the flange welded to the pipe by someone over there so you can clock it to suit your engine, otherwise we might end up double shipping to get it right. These pipes have got to be a hindrance when trying for high power figures - another thing I would like to do a before and after comparison with on the dyno.
Will get on to it Friday for you and post pictures for you here, the original set I made replaced the accordion hoses as well - it looked a hell of a lot like the one Ash released shortly after. Pretty sure this was a case of two great minds thinking alike though - or maybe just a fluke LOL! The advantage of doing the accordion pipe as well is it makes the turbo inlet pipe FAR easier to make as you can alter the inlet angle to suit the ally bends readily available. The accordion pipe replacement is VERY simple and only takes a few minutes to make.
Inlet pipes tacked together and looking good will have pictures tonight. Hardest part is I need to put a motor back in my project car so I can ensure everything will fit - project car is buried well and truly in the corner and could take a while to extract :rofl:
Rather than clutter the thread with pics here is the best comparison: 2.5" all the way from just behind the headlamps to the turbo inlets, the stock system is actually bigger in places but much smaller in other places & with the flexy joint in it it can't be good for air flow. Still need to add the PCV ports if required and weld all the joints properly, the black tape is just to hold it together for the pic and will obviously be replaced with a silicon joiner. Tempted to steal these ones for my own car & make another set for molaZX
Hey Mungyz Ive been looking at making some of these latly but seeing as youve already done the hard bit whats your price. I only need the part that replaces the accordian pipe
Keep your eyes peeled in the future "we" are working on something to provide the community with these at a good price :zlove:
awsome whats the eta on this. and if i get them made now rather than in with the mass is it diff price
Mine! All mine mine mine! And they're going to be black by the time I get em Going to have full 2.5" intake from Pod to Turbo & Turbo to Throttle Bodies MoulaZX
Clearly this is the best solution but I'm wondering if the reason the other 2.5 inch kits are post turbo is because its a bigger issue to "push" the air through the pipes than "suck" it. What I mean by that is that once air leaves the turbo there is only resistance until it reaches its destination (no more force to push it further and the resistance is cumulative), whereas prior to the turbos the restriction is constant and averaged over the length of the pipe. I'm not saying that its irrelevant, just possibly less important??
Inlet valves are always bigger than exh valves on engines, reason being in laymen's terms - it's harder to suck than it is to blow The intake system on my own car uses 3" pipe from the filter to the pipes under the headlamps just to try and help out as much as possible. I have plans to improve on the design for these kits even further & once tested they will be out there for those that wish to buy them I think the other kits that are out there are 2.5" all the way due to cost of components and time to build, I also think they may be underestimating how much power can be lost in a poor intake system. 2.5" will be perfect for most applications but for those aiming for stupid amounts of power we will have something to help them along a little in the future.
Fair enough theory. As Mungy has said, its easier to push then to suck, lol. If the stock Turbo Intake Piece wit the Flange & Accordion Pipes were even slightly better designed, I'd have no qualms using them, but they're just horrible. Have a look at the 2nd picture in the first post again, unequal diameter, odd kinks & bends to make it fit tighter, etc. To me it just makes sense those design issues would cause some flow issues, could be minor, could be major, point is, they exist, and the only time I'll be able to tackle them and not want to slit my wrists, is while the engine is out lol. :rofl: We always see guys going with bigger exhausts, up to 3" but rarely to we see those people applying the same theory of 'bigger = more flow = more power' to the other equally important part of the 'giant air pump', intake. MoulaZX
