Author Topic: manual boost control  (Read 2147 times)

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Offline TurboCajun

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manual boost control
« on: August 15 2013, 11:27:45 AM »
 I ordered the HD waste gate actuator, I also run the manual boost controller, My question is --- do I set the manual boost controller for about 18psi and use the actuator for higher boost, 
85 GN -- Converted to 87 set-up using 66/72 turbo, front mount I/C, 80lb injectors,gn1 heads 14 bolt 1.65 roller rockers stud mount, ported intake with plate, fuel hot wire, 3" dp, running 24psi., alky kit, stroker 20 over, 212/206 roller,  best time 10.995 @ 121 1.56 60ft

Offline Steve Wood

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Re: manual boost control
« Reply #1 on: August 15 2013, 12:12:48 PM »
Maybe, maybe not.

Ideally, one would use the controller to set it all and keep the wastegate rod set with about 1/8" to allowing maximum wastegate opening.  I have seen some that had a problem with the boost coming up too quick and they backed off the manual controller and set the max boost with the wastegate rod.  I have seen this allow boost creep in a couple of cases because teh turbo was outflowing the wastegate opening due to reduced travel of the flapper.

Me, I would not do that.  I would either cut back on the timing a little in 1/2 or richen the fuel a bit to slow the spool down if I could not get the traction I wanted due to a lousy surface or sorry suspension performance..b ut then I seem to do things strangely, I guess
Steve Wood

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A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline TurboCajun

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Re: manual boost control
« Reply #2 on: August 15 2013, 04:40:56 PM »
My concern was running the boost up to 24 psi to fast with the manual, but than again I am pretty rich on the low end, more psi should help.
85 GN -- Converted to 87 set-up using 66/72 turbo, front mount I/C, 80lb injectors,gn1 heads 14 bolt 1.65 roller rockers stud mount, ported intake with plate, fuel hot wire, 3" dp, running 24psi., alky kit, stroker 20 over, 212/206 roller,  best time 10.995 @ 121 1.56 60ft

Offline Steve Wood

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Re: manual boost control
« Reply #3 on: August 15 2013, 07:10:15 PM »
never bothered me, but then one of the thrills when you get old is keeping it out of the ditch!

You can pretend you are John Force and learn to "pedal" it
Steve Wood

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A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline TurboCajun

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Re: manual boost control
« Reply #4 on: August 16 2013, 10:02:26 AM »
well since I am back on street tires I have been pedaling quite a bit. lol.   :cheers:
85 GN -- Converted to 87 set-up using 66/72 turbo, front mount I/C, 80lb injectors,gn1 heads 14 bolt 1.65 roller rockers stud mount, ported intake with plate, fuel hot wire, 3" dp, running 24psi., alky kit, stroker 20 over, 212/206 roller,  best time 10.995 @ 121 1.56 60ft

Offline Steve Wood

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Re: manual boost control
« Reply #5 on: August 16 2013, 10:06:36 AM »
boost and street tires don't work, period :D
Steve Wood

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A lot of broken parts does not make you a racer; it makes you a slow learner.

Offline Pyro6

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Re: manual boost control
« Reply #6 on: August 18 2013, 02:31:20 PM »
Hence the rarity of our cars.
 

Offline Steve Wood

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Re: manual boost control
« Reply #7 on: August 18 2013, 03:32:08 PM »
If we had an access to today's power makers back in the '80s, there would not be many left
Steve Wood

http://www.vortexbuicks-etc.com

A lot of broken parts does not make you a racer; it makes you a slow learner.

 

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