FYI if you're thinking of running a GZ LIM with the CJ fuel system.....
03-04-08, 11:16 PM
#1
Original Gangster/Rotary!
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iTrader: (213)
FYI if you're thinking of running a GZ LIM with the CJ fuel system.....
......you'll need a grinder, a welder, and a sledgehammer 
The CJ Motorsports fuel system is a beautiful set up, very pleasing to the eye and very well made. I'm not trying to throw anyone under the bus, but I think given some forewarning people won't have to experience the fun that Ihor and I have been dealing with lately.
The CJ kit was designed around the stock LIM. As such, the primary injectors face towards the LIM (vs away from it with the KG kit) and the connectors basically occupy the same spot as the additional injector bungs on the GZ piece. You'll need to grind them down a decent amount, then spot weld the exposed holes. By test fitting you'll know when you've ground enough.
The other problem is in the feed at the back of the primary rail. It's placed very far back, and rubs on the back of the firewall. Enter your good friend the sledgehammer
.
Aside from all this, it fits like a dream
The CJ Motorsports fuel system is a beautiful set up, very pleasing to the eye and very well made. I'm not trying to throw anyone under the bus, but I think given some forewarning people won't have to experience the fun that Ihor and I have been dealing with lately.
The CJ kit was designed around the stock LIM. As such, the primary injectors face towards the LIM (vs away from it with the KG kit) and the connectors basically occupy the same spot as the additional injector bungs on the GZ piece. You'll need to grind them down a decent amount, then spot weld the exposed holes. By test fitting you'll know when you've ground enough.
The other problem is in the feed at the back of the primary rail. It's placed very far back, and rubs on the back of the firewall. Enter your good friend the sledgehammer
. Aside from all this, it fits like a dream
03-05-08, 01:47 PM
#8
Sorry for the troubles, but thank you very for your persistence in making it work as well as letting us know about the compatibility issues.
We are down to 2 systems left in stock, so we will go ahead and make accommodations on the next batch to eliminate these concerns.
I just wanted to confirm the fitment issues.
If we machined an opening in the primary rail so that you could rotate the injectors 180 degrees allowing the clips to face the other direction, would that solve the major issue?
As for the secondary rail sticking so far off the back, We have some room there to shorten the back of the rail... how much clearance do you think we need to add to accommodate a -8 90 degree fitting back there without you having to modifying the firewall?
Your feedback is appreciated, and we are happy to be able to make the changes to the system to make it compatible with the GZ manifold. We originally thought it was out of production so that's why we didn't look into it before. But since people are still using these, we will adjust our system to fit with it. I think we will be able to do it without making any major changes to our overall system layout, just some slightly different machining should be all!
Thanks again!
Also:
Would I be able to get some pics of these modifications?
Are you running a GZ oil pan as well? (this pan will raise the entire motor)
We are down to 2 systems left in stock, so we will go ahead and make accommodations on the next batch to eliminate these concerns.
I just wanted to confirm the fitment issues.
If we machined an opening in the primary rail so that you could rotate the injectors 180 degrees allowing the clips to face the other direction, would that solve the major issue?
As for the secondary rail sticking so far off the back, We have some room there to shorten the back of the rail... how much clearance do you think we need to add to accommodate a -8 90 degree fitting back there without you having to modifying the firewall?
Your feedback is appreciated, and we are happy to be able to make the changes to the system to make it compatible with the GZ manifold. We originally thought it was out of production so that's why we didn't look into it before. But since people are still using these, we will adjust our system to fit with it. I think we will be able to do it without making any major changes to our overall system layout, just some slightly different machining should be all!
Thanks again!
Also:
Would I be able to get some pics of these modifications?
Are you running a GZ oil pan as well? (this pan will raise the entire motor)
03-05-08, 02:31 PM
#9
rebreaking things
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The easiest solution would be to use a metric to AN banjo fitting in place of a standard hose end fitting. $10-20 cost and no firewall hammering required.
If more depth is required it may be possible to reduce the length of the rail end. Keep in mind that you need to leave enough space so the fitting that is screwed into the end of the rail does not block the rear injector port inside the rail.
I had a similar problem with my 20b rail. It was so close to the firewall I had to have a male AN boss welded onto the side of the rail end.
If more depth is required it may be possible to reduce the length of the rail end. Keep in mind that you need to leave enough space so the fitting that is screwed into the end of the rail does not block the rear injector port inside the rail.
I had a similar problem with my 20b rail. It was so close to the firewall I had to have a male AN boss welded onto the side of the rail end.
03-05-08, 02:40 PM
#10
Original Gangster/Rotary!
Thread Starter
iTrader: (213)
Hey Brandon (think that's your name ),
yes, changing the primary rail so that the injectors can rotate 180 degrees would fix the major problem.
Ideally you'd want a solid 1/4 inch more clearance. You could always move the 90 degree fitting from the line to the rail, that would help as well.
This car is running the stock oil pan.
I'll try and get you some pics as well
),yes, changing the primary rail so that the injectors can rotate 180 degrees would fix the major problem.
Ideally you'd want a solid 1/4 inch more clearance. You could always move the 90 degree fitting from the line to the rail, that would help as well.
This car is running the stock oil pan.
I'll try and get you some pics as well
03-05-08, 03:24 PM
#11
Yep, Brandon's the name.
Could you tell me if you are running a -8 feed line/ -8 90. The radius on a -8 is a lot larger than a -6.
I think I can shorten the end of the rail by a 1/2", I will draw it up in cad this evening.
Was there any other issues?
Does any one make a -8 banjo fitting? I looked briefly but couldn't find anything.
Could you tell me if you are running a -8 feed line/ -8 90. The radius on a -8 is a lot larger than a -6.
I think I can shorten the end of the rail by a 1/2", I will draw it up in cad this evening.
Was there any other issues?
Does any one make a -8 banjo fitting? I looked briefly but couldn't find anything.
03-05-08, 03:31 PM
#12
Original Gangster/Rotary!
Thread Starter
iTrader: (213)
Yup, it's the optional -8 feed line. The customer is running -8 from the tank all the way forward. No other issues other than the ones mentioned, we havent gotten the car running yet due to fitment problems with the turbo kit. Yup, this FD has been more fun than a barrel of monkeys 
...I might have a set of manifolds for you soon also.
03-05-08, 06:37 PM
#16
Yes www.xcessivemanufacturing.com Its actually made by these guys, gz just put their name on it.
GZ and Xcessive is almost one in the same. Groundzero is owned by two guys. Ralph Friend and another guy. I don't know him personally, and I've never seen him on the boards, so I'll withhold his name. Ralphs First company was Xcessive motorsports. Ralph whent into business with the guys of GZ, then the companys kinda merged. I honestly don't know why the still have the Xcessive logo still on there. Maybe has something to do with copy rights and stuff.
I highly recommend the LIM. I was one of the first ones to own, and test one. CJ
03-05-08, 06:39 PM
#17
rebreaking things
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03-05-08, 07:04 PM
#18
Just wondering, have you done this with our rail?
It seams that the 18 mm would be the only one that might work. The tap drill for an M18x1.5 is .6496 and the tap drill for 3/4-16 is .6875. It seems as there would not be enough stock to re tap the rail. If this is the case then it would have to be drilled and tapped from the start for the M18.
Another option would forged fittings that have a tighter bend, and should flow better than a Banjo fitting.
It seams that the 18 mm would be the only one that might work. The tap drill for an M18x1.5 is .6496 and the tap drill for 3/4-16 is .6875. It seems as there would not be enough stock to re tap the rail. If this is the case then it would have to be drilled and tapped from the start for the M18.
Another option would forged fittings that have a tighter bend, and should flow better than a Banjo fitting.
03-05-08, 07:39 PM
#20
GZ and Xcessive is almost one in the same. Groundzero is owned by two guys. Ralph Friend and another guy. I don't know him personally, and I've never seen him on the boards, so I'll withhold his name. Ralphs First company was Xcessive motorsports. Ralph whent into business with the guys of GZ, then the companys kinda merged. I honestly don't know why the still have the Xcessive logo still on there. Maybe has something to do with copy rights and stuff.
I highly recommend the LIM. I was one of the first ones to own, and test one. CJ
I highly recommend the LIM. I was one of the first ones to own, and test one. CJ
03-05-08, 07:40 PM
#21
The outlet is tapped for a 9/16-18, which is the standard tap -6 AN tap size.
However the Y'ed fitting is 1/2-20, which we use a -6 to 1/2-20 fitting.
03-06-08, 01:39 AM
#22
Because they are not the same, GZ is a company Rich made the manifold for. The guy who produces the mani now (Rich) is the same guy who produced it then. He owns all the equipment and when he left GZ he took it with him. Xcessive is his company. The question should be, why did it ever say Ground Zero.
CJ
03-06-08, 06:23 PM
#24
This sucks, I have the CJ rail siitting here that will be going into my new engine witht the GZ LIM and your saying that it wont fit without modification....That sucks...Guess I may just sell this rail and buy a different one for it...
I was hoping to be able to use the CJ rail since it's so preety...lol..
I was hoping to be able to use the CJ rail since it's so preety...lol..