HTT Stage IV how-to and impressions
08-11-2006, 08:54 PM
#1
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HTT Stage IV how-to and impressions
I got my HTT Stage IV today, so I decided to do a write-up with pics for anyone who hasn't done it before.
Tools: 3/4 socket (must be 12 pt) and breaker bar or ratchet to hold it, 13mm socket, 7/16 wrench, 8mm wrench, in. lb. torque wrench
Start by taking off the intake to the turbo and the clamp for the compressor outlet, then taking off the clamp for the downpipe and loosening the v-band clamp holding the compressor housing on.
Rotate the compressor housing to where the outlet points almost straight up (to clear coolant lines on an auto) and slide it off.
Put the 3/4 socket on the end of the shaft on the turbine side to hold the shaft. Put the 13mm on the compressor nut and remove the nut (REVERSE THREADS). Slide the compressor wheel off the shaft. If you're putting on a Stage III or lower you can skip to putting the new wheel on.
Next loosen the four 8mm screws holding the backing plate on the center section. Take the backing plate off.
The baffle and oil slinger will need to be moved from the old backing plate to the new one. Slip the baffle off, then pop the slinger out.
Compress the piston ring on the slinger and push the slinger firmly into the hole in the new backing plate. Slip the baffle on, then install the plate. Slip the new compressor wheel on the shaft and torque the nut down (REVERSE THREADS) to 150 in. lb. if it's a 6-point nut, 135 in. lb. if it's a 12-point nut.
Put the new compressor housing on with the seal (either the old or new, depending on what you got) and the clamp, clock it to the position it needs to be, install the other clamps, hook the downpipe back up, and enjoy the whistle!
I'm up to 40psi boost, down to 1250* EGT's, and the truck gained a little power. My sister described the whistle as "ear-piercing". Also, the turbo no longer "barks" the way it used to; it just spools down smoothly. I'm very happy with the upgrade.
Tools: 3/4 socket (must be 12 pt) and breaker bar or ratchet to hold it, 13mm socket, 7/16 wrench, 8mm wrench, in. lb. torque wrench
Start by taking off the intake to the turbo and the clamp for the compressor outlet, then taking off the clamp for the downpipe and loosening the v-band clamp holding the compressor housing on.
Rotate the compressor housing to where the outlet points almost straight up (to clear coolant lines on an auto) and slide it off.
Put the 3/4 socket on the end of the shaft on the turbine side to hold the shaft. Put the 13mm on the compressor nut and remove the nut (REVERSE THREADS). Slide the compressor wheel off the shaft. If you're putting on a Stage III or lower you can skip to putting the new wheel on.
Next loosen the four 8mm screws holding the backing plate on the center section. Take the backing plate off.
The baffle and oil slinger will need to be moved from the old backing plate to the new one. Slip the baffle off, then pop the slinger out.
Compress the piston ring on the slinger and push the slinger firmly into the hole in the new backing plate. Slip the baffle on, then install the plate. Slip the new compressor wheel on the shaft and torque the nut down (REVERSE THREADS) to 150 in. lb. if it's a 6-point nut, 135 in. lb. if it's a 12-point nut.
Put the new compressor housing on with the seal (either the old or new, depending on what you got) and the clamp, clock it to the position it needs to be, install the other clamps, hook the downpipe back up, and enjoy the whistle!
I'm up to 40psi boost, down to 1250* EGT's, and the truck gained a little power. My sister described the whistle as "ear-piercing". Also, the turbo no longer "barks" the way it used to; it just spools down smoothly. I'm very happy with the upgrade.
Last edited by wannadiesel; 09-08-2006 at 06:41 PM. Reason: fix pix : )
08-11-2006, 10:09 PM
#4
Registered User
Gman,
Great writeup!! Excuse my newbie stupidity, but where did you buy the HTT Stage IV setup? I just bought my 93 CTD in early July, so I am digesting all I can here
Great writeup!! Excuse my newbie stupidity, but where did you buy the HTT Stage IV setup? I just bought my 93 CTD in early July, so I am digesting all I can here
08-11-2006, 10:18 PM
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HTT is www.htturbo.com
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08-12-2006, 07:21 AM
#8
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I talked to Paul at HTT about the differences between the Stage III and IV, and he said the Stage IV would cool a bit better because of the bigger exducer. I decided to go with the IV in case I add more fuel in the future. I'm glad I did, as EGT's are still around 1250 with the IV. I didn't have to send my backing plate in.
08-12-2006, 01:10 PM
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Originally Posted by gman07
I talked to Paul at HTT about the differences between the Stage III and IV, and he said the Stage IV would cool a bit better because of the bigger exducer. I decided to go with the IV in case I add more fuel in the future. I'm glad I did, as EGT's are still around 1250 with the IV. I didn't have to send my backing plate in.
you've got a PM...
Greg
08-12-2006, 05:54 PM
#13
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Originally Posted by G1625S
Great writeup and excellent pics!
Am I the only one that's thinking 1250 is a little hot for stock injectors and a big hybrid?
Am I the only one that's thinking 1250 is a little hot for stock injectors and a big hybrid?
08-12-2006, 06:33 PM
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Originally Posted by G1625S
Great writeup and excellent pics!
Am I the only one that's thinking 1250 is a little hot for stock injectors and a big hybrid?
Am I the only one that's thinking 1250 is a little hot for stock injectors and a big hybrid?
1250* while pushing 40psi boost on #2 only sounds pretty darn good to me!
