LB7 intake horn

Vasbinder

Member
Dec 19, 2008
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16
Floresville, Texas
What is the procedure of making the intake horn flow better. Do you machine or polish it out? I haven't seen any pictures and didn't want to mess it up doing it the wrong way
 

KEVINL

Well-known member
Jul 4, 2008
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Phoenix, AZ
Machine it to where it does not kneck down right before the compressor housing.


Polishing can't hurt either
 

maine04max

New member
Dec 11, 2008
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imo the horn from super diesel is well worth the money and hes a vendor here to boot ;)
 

WolfLMM

Making Chips
Nov 21, 2006
4,005
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AL
What is the procedure of making the intake horn flow better. Do you machine or polish it out? I haven't seen any pictures and didn't want to mess it up doing it the wrong way

You need to machine it, either a mill or lathe. You can use a 1/4 endmill in a die grinder but you better have steady hands.
 

JMK777

16's, but i keep em clean
Mar 20, 2008
1,433
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Moss Beach
If you have a mill or drill press you can take it one step further.:D
It works and you don't have to remove the whole turbo just the compressor housing.


picture.php
 

WolfLMM

Making Chips
Nov 21, 2006
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Well if you havent done it yet, here ya go. Build a fixture to hold the horn by the three mounting holes. I you have a CNC your life just got easier, bolt fixture to table and interpolate away. If your doing this on a manual you can use a turntable (pain in the ass) or use a fly cutter:angel:.
 

JMK777

16's, but i keep em clean
Mar 20, 2008
1,433
5
38
Moss Beach
comp housing was done in a turn table on a mill with a 3/8" endmill and fly cutter it took a little time to set up. I tried to set up the horn in a mill but was taking too long, its a odd curved shape that is a mother to set up. the horn was don by hand, that picture was after 120 grit flap sander after i went to 160 than 220 eventually the whole horn was smoothed out. ill try to get pictures of it finished, its bin on about 6 months.
 
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WolfLMM

Making Chips
Nov 21, 2006
4,005
26
48
38
AL
comp housing was done in a turn table on a mill with a 3/8" endmill and fly cutter it took a little time to set up. I tried to set up the horn in a mill but was taking too long, its a odd curved shape that is a mother to set up. the horn was don by hand, that picture was after 120 grit flap sander after i went to 160 than 220 eventually the whole horn was smoothed out. ill try to get pictures of it finished, its bin on about 6 months.

It was hard to set up, time consuming. CNC saved my life there. The turntable method is a pain in the ass too.