Hey, I am beginning to plan and compile parts for my attempt at a 6 port turbo setup and was wondering if anyone knew if the s4 mani or the vdi mani would suite this application better better. Would the vdi have the same benefits as it does in a N/A motor?

 

www.1300cc.com sells (or will be soon) a 6 port turbo kit that includes a new UIM and LIM that allows enough clearance for the turbo.

 

Ive chatted with sonikrat(the owner/manufacturer) quite a bit about this and fully intend on buying his kit before the end of the year. However the kit runs about 4x as much as im spending on this and I would like to have something (though less efficient and powerful) to play around with for the time being.

 

What are the advantages to turboing an N/A as opposed to just buying a turbo motor?

 

higher compression rotors. couple of other things. I am doing this right now with an n/a motor with Tii manifolds and injectors and an FD fuel pump. Of cours the whole Tii drivetrain as well. just waiting for my other parts.

 

Of course, with the higher compression, 91 octane becomes necessary, right?

 

don't think so with the extra fuel.

 

So the extra fuel won't pre-ignite even if it's 87 octane. Sorry for all the questions. I'm new to rotaries. I'd prefer to ask a ton of questions now and not blow anything later.

 

rotaries or piston, don't matter, if you throw more fuel at any engine thats force inducted then you lower the chance of detonation.
Its the worst way to do it though, proper way is to get a higher octane and better intercooling, but when you throw more fuel at those kinds of engines your gonna waste more gas and have a very poorly tuned engine.

Why don't they have any pictures of the intake mani's? If someone is gonna put down 1300$ for that they should at least see some pictures.

 

If you'r referring to me, it's because the two kits I had bought simply for that purpose (pictures, documenting install, etc) have basically been stolen from me and I've had little to no time to replace what I've lost, thus my delays.

 

man that sucks. I was wanting to see those too.

 

Vaiable length intake manifolds (like the VDI) do work with turbos, but the gains relative to the effect of the turbo are quite minor. This is why manufacturers don't usually spend developement time and money to develop these systems for their turbo engines, but go to great lengths for theit NA ones. Using the same line of thinking, if you don't have a VDI manifold, it's not worth going to all the trouble of adding one to an engine you plan to turbo. But if you have it, there's no reason to disable it.

 

VDI are those on the Tii model?

 

VDI are on the N/A manifolds.

Another UIM you can use, with a little porting work, is an FD UIM/Throttle body. The FD uses a different style of TPS, though. I'm not going to argue over which manifold would be best to use, because I don't have any first hand information. Just tossing in another possibility.

 

It looks different, but works exactly the same and requires nothing more than simple wire-matching.

 

I was just trying to emphasize the fact that it isn't going to be a direct plug-and-play. The connector on the FC wiring harness won't work on an FD TPS. What I plan on doing is to find someone parting out their FD and get the TPS plug and some of the wiring, and run it to an SAFC or other piggyback, as when going turbo you need something to control the fuel anyway.

 

True, not plug and play, but for the FD UIM swap, the TPS is the least of the challenges before you.