You can also get them in 48mm and 33mm

 

That should be workable, thanks for the help

 

Must started making it for shorter injectors recently as they only made them for the 60mm as that's what all their fuel rails are set for.

 

fwiw, the install kit, that's supposed to come with the xcessive manifold, includes the plugs

 

^ Those plugs are known to blow out under high boost. I wanted something that I can guarantee would not blow out.

 

just a follow up, what would be considered high boost? at the point where I got to make a call on whether or not I'm using the plugs.

thanks

 

I was told that you should not use these plugs on anything over 15psi.

 

you shouldnt use the tap in inserts that go into the lower intake manifold only, over 15psi. the dummy injectors are the same as injectors only dont allow fuel to flow through. pro-jay focuses on high boost applications, its safe to run these dummy injectors where it is not safe to run the tap in port plugs over 15 psi as they may pop out. hope this helps!

 

1/4 npt. I only tapped the lower seat ID so the sealing area of the injectors remains untouched.

 

How I did mine.

 

Gross.

 

WHY? This is exactly what I would not do with a nice aftermarket LIM.

Just to ensure you cant ever go back to 4? Why in the world would you do this over just using the dummy injectors and the 4 port rail???

 

I wouldn't modify the manifold in such a way, though it is "fail proof" for the plugs to not be ejected, it isn't easily serviceable with out cutting/grinding and if you want to upgrade later it might run into being a challenge though it looks liek the welds were placed very carefully.

I don't like the press in. i went ahead and went with 4 rail. and bought pro-jay dummies. they sell them in 60mm and 48mm. the 3rd size you may encounter is 33 or 34 which pro-jay doesn't make dummies for.

 

I don't think any of the aftermarket companies out there make secondary rails with a mounting height for a direct fit with a 34mm injector anyways.

Skeese

 

To some people the inside injectors of the Xcessive LIM is useless , should be for almost everyone , unless your a race car of some sort that don't care about idle.

+if you think about it with 6 injectors , 4 will be feeding the primary intake runners , which is backwards since they're should have more fuel going to the secondary runners .

Of course stage injection can counter that but
really , you only need 4 injectors to make 600+(rotary) rwhp .

I like the tapping option as it will not move from there but I wonder if it will create a fuel leak eventually.

As for the welding I like that better even if it's "gross" like mention before,a little bit a grinding and it's like new.

Which one will have hard time bringing back to new condition if it's tapped .

Soooo what do you guys think would be the best option to someone that don't need injectors port 2&3 of the Xcessive LIM ???

 

It's been stated numerous times. Dummy injectors.

 

I should of been more specific , what would you guys do in a situation like this then..

 

Spend the $200 on a new fuel rail, or machine some 'flats' into the fuel rail to locate and accept dummy injectors or aluminum slugs.

 

I knew I was going to get flamed for it. It is not the best solution, but it is a solution to prevent those freeze plugs from popping out under boost. The only reason I went the route I went due to:
1 - I know for a fact I'm not going to run 4port secondary (this is a street car)
2 - I have CJ Racing 2port with built in FPD fuel rail
3 - Dummy Injectors - potential possible failing point for fuel leak
4 - If I run a 4port rail I will need to get a external FPD and a limited solution available.

If I do decide one day to go 4port, I can always grind off the welds and clean up the surface or purchase another xcessive 4port manifold. Imma put on my flame suit.

 

I mean, you do you but it's a poor solution and your reasoning is pretty weak:

1. E85 and 4 port rails kinda go hand in hand even for a street car. This gives you the option to build your injector setup with gas friendly sizes and have either a third stage or double up the second stage when you swap to E85.
2. So you bought the wrong part to fit with another part you knew was incompatible and decided to nuke its resale value (most of these builds end up being temporary, who are we kidding)
3. I mean...I guess? Look at how many cars are running 6+ injectors in the piston world. If you use good equipment/materials it's not going to leak. Also its not like these are side feed injectors with stupid o-rings.
4. Debatable. I've never once used an FPD with an aftermarket rail/regulator and I've never once had an issue getting reasonable cars to pass sniffer tests in California.

 

1/4 npt threads and plugs. not difficult or expensive at all, maintains the use of the middle 2 injectors if you decide to use them in the future, no brainer.

I ended up removing my 1/4npt plugs, traded my rail for a 4-port one and added 2 additional injectors so i know for a fact this method works and doesn't ruin the middle injector ports.

 

Some feedback. I tried to tune car with a streetport and 1000 primaries in the LIM for quite some time as people at adaptronic said they ran such a setup before and it would work fine. In the end I dont think its impossible but very close to. The car would always die when returning to idle. I trieb everything even disabling fuelcut alltogether.

Now I bite the apple and put back the 550cc in the center iron and drilled a 4mm hole just below the center stud for the anti wet port for the stock primaries this conectes with an 8mm tube to the intake elbow.. Unbelieveable how nice and smooth the engine runs now. without any finetuning. I can idle at 600 rpm lambda 1 almost. before anything below 1200 with leaner then 13 afr would misfire.

 

I had read that its not the 1000 cc injectors as primaries, its the location of them at the LIM. Good to know you fixed it though..