what have you done with stock FI and performance mods?, quest for a killer D-jet 2056cc motor |
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what have you done with stock FI and performance mods?, quest for a killer D-jet 2056cc motor |
realred914 |
Nov 13 2010, 08:08 PM
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#1
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Senior Member Group: Retired Members Posts: 1,086 Joined: 1-April 10 From: california Member No.: 11,541 Region Association: None |
what are the trick mods for performance power when building a D-jet motor . it is a tired 2 liter that will be getting a big bore 2056 piston kit.
what are recommendations for valves, porting compresion , etc.... will be a driver car 91 octane gas, , have SS heater exchanger, and I do want heat. what can be done during rebuild to beef up the power???? |
HAM Inc |
Nov 19 2010, 09:09 AM
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#2
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Senior Member Group: Members Posts: 846 Joined: 24-July 06 From: Watkinsville,GA Member No.: 6,499 Region Association: None |
QUOTE my under standing of the 911 swivil feet is that they have longer life and dont tend to deform which can thorw off valve adjustment as the stock feet do. is there any other benifit to them other than this factor? The 911 swivel screws eliminate the friction loading at the valve/adjuster interface (if you think the unit loading is high at the cam/lifter just consider what it is at the valve/adjuster with its much smaller contact area) so there is no wear at that interface and therefore valve adjustments hold longer. It also all but eliminates the side loading of the valve which in turn all but eliminates guide wear if the rocker geometry is correct. Reducing guide wear will also contribute to less valve/valve seat wear. In Bleysing's post he listed the cam he used as a 9950 or ? I'm pretty sure he used a Raby 9550. It is very popular with D-Jet users. |
realred914 |
Nov 19 2010, 12:26 PM
Post
#3
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Senior Member Group: Retired Members Posts: 1,086 Joined: 1-April 10 From: california Member No.: 11,541 Region Association: None |
QUOTE my under standing of the 911 swivil feet is that they have longer life and dont tend to deform which can thorw off valve adjustment as the stock feet do. is there any other benifit to them other than this factor? The 911 swivel screws eliminate the friction loading at the valve/adjuster interface (if you think the unit loading is high at the cam/lifter just consider what it is at the valve/adjuster with its much smaller contact area) so there is no wear at that interface and therefore valve adjustments hold longer. It also all but eliminates the side loading of the valve which in turn all but eliminates guide wear if the rocker geometry is correct. Reducing guide wear will also contribute to less valve/valve seat wear. In Bleysing's post he listed the cam he used as a 9950 or ? I'm pretty sure he used a Raby 9550. It is very popular with D-Jet users. what is the lift and duration on the raby cams that folks are using? i what to get some comparisions on this, will make a chart of varius combos of cams and such. |
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