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Old 11-17-2017, 05:28 PM   #501
YOUNG GUNS15
 
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Quote:
Originally Posted by WUnderwood View Post
You going to fire ring it?


Already fire ringed. Thinking arp 625's and a new gasket might be all I need. However this might be a good opportunity to upgrade the cylinder head


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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 11-17-2017, 05:43 PM   #502
jasonc

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Probably can just fix it back to what it was, pulling it down in overdrive is loading it hard, as you know. Keep it reved up.
 
Old 11-18-2017, 08:04 PM   #503
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Quote:
Originally Posted by jasonc View Post
Probably can just fix it back to what it was, pulling it down in overdrive is loading it hard, as you know. Keep it reved up.

Yeah I know, it didn't feel like I pulled it down in OD that hard.

I'm thinking of going back with 625's and a good hard retorque will do the job. I just need to decide if I can justify an aftermarket head like a Hamilton high swirl.


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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 11-18-2017, 09:19 PM   #504
56cummins

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Time for 14mm??? I read one of the new Fords has 16mm head studs, go big!!!
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95 cummins
 
Old 11-20-2017, 02:18 PM   #505
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Man, that stinks. Sounds like my kind of luck. Haha
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1968 Corvette 12v Cummins Compounds 47RH
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1972 K30 Longhorn P-Pumped 24v 47RH Compounds
 
Old 11-21-2017, 10:48 PM   #506
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what studs you got in it? ill never run anything but 625s
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-Aaron H.

97 12v 4x4
 
Old 11-21-2017, 10:49 PM   #507
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Quote:
Originally Posted by 12vCumminsFTW View Post
what studs you got in it? ill never run anything but 625s


425's


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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 11-24-2017, 12:59 PM   #508
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Do you have a factory 5k rpm tach in your truck ? Is it pretty straight forward to swap the cluster over ?
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95 rclb, K31 71/76/.9, 180 pump, 5x.018s, 7mm dv , stock stall triple

2006 mega cab Stock grocery getter with a straight pipe and exergy sportsman injectors.
 
Old 11-24-2017, 01:00 PM   #509
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It is a straight swap. Everything worked great except for my temp gauge, for whatever reason it reads really high.


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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 11-24-2017, 01:11 PM   #510
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Did you ever try the n20 with the s475 anywhere besides the dyno ?
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95 rclb, K31 71/76/.9, 180 pump, 5x.018s, 7mm dv , stock stall triple

2006 mega cab Stock grocery getter with a straight pipe and exergy sportsman injectors.
 
Old 11-24-2017, 01:12 PM   #511
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Looks like I'll be hitting up my buddy with a gasser parts truck then. Thanks
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95 rclb, K31 71/76/.9, 180 pump, 5x.018s, 7mm dv , stock stall triple

2006 mega cab Stock grocery getter with a straight pipe and exergy sportsman injectors.
 
Old 11-24-2017, 01:22 PM   #512
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Quote:
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Did you ever try the n20 with the s475 anywhere besides the dyno ?


Oh yeah, several fun blasts down the highway!


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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 11-24-2017, 01:27 PM   #513
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I have a solenoid with a .091" orifice I'm itching to try
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95 rclb, K31 71/76/.9, 180 pump, 5x.018s, 7mm dv , stock stall triple

2006 mega cab Stock grocery getter with a straight pipe and exergy sportsman injectors.
 
Old 11-24-2017, 01:28 PM   #514
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Honestly without a lot of bottle pressure and no pill it felt like a good light switch on power gain on the street, but it wasn't enough to overspend my turbo. Only made around 53-55psi max with the n2o turned on


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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 11-24-2017, 01:37 PM   #515
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I'm hitting the upper 50s with my k31. It cleans up my 16s without a plate in the pump and the afc slid back all the way. My fuel pressure is in the 30s on a long run. I got my bottle filled last summer but found out it had a slow leak. I'd love to be able to hit mid 600s or better with or without the bottle
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95 rclb, K31 71/76/.9, 180 pump, 5x.018s, 7mm dv , stock stall triple

2006 mega cab Stock grocery getter with a straight pipe and exergy sportsman injectors.
 
Old 11-24-2017, 01:51 PM   #516
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Quote:
Originally Posted by YOUNG GUNS15 View Post
Honestly without a lot of bottle pressure and no pill it felt like a good light switch on power gain on the street, but it wasn't enough to overspend my turbo. Only made around 53-55psi max with the n2o turned on


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How much boost without the bottle ?
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95 rclb, K31 71/76/.9, 180 pump, 5x.018s, 7mm dv , stock stall triple

2006 mega cab Stock grocery getter with a straight pipe and exergy sportsman injectors.
 
Old 11-24-2017, 02:09 PM   #517
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48psi total. Never really made a ton of boost until the hx82 was added.


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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 11-24-2017, 03:20 PM   #518
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Ever get surge with the 75 when the trans went into od or lock up ?
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95 rclb, K31 71/76/.9, 180 pump, 5x.018s, 7mm dv , stock stall triple

2006 mega cab Stock grocery getter with a straight pipe and exergy sportsman injectors.
 
Old 11-24-2017, 03:23 PM   #519
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Yes if I short shifted at WOT on accident, otherwise not really. Mid throttle was good, actually ran its best when the fuel wasn't thick out the pipe and I was just tethering the throttle through the gears.


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-1994 4x4 12 valve 13mm, single 475 748/1292 Fuel 872/1470 N2O
-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
Old 11-30-2017, 09:43 AM   #520
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Well I managed to get the head pulled off and do some inspection of the head gasket.

It is very obvious my fire rings were not crushed much. I measured them and they are .094-.093 thick. They started out as .105 wire. I followed the instructions sent with the haisley gasket very closely. I donít believe the max torque spec for ARP425ís is enough to crush the fire ring enough. Mine were torqued to 140, even then the rings werenít crushed much.

The plan right now is to go back with 625ís and the same style fire ring gasket from haisley.

Click the image to open in full size.


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-2005 4x4 12 valve CCSB 3rd gen '12-rail' 280hp
 
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