DRR / Crew
| quote: There is a bolt on deal to help this issue, bolts on to the secondary linkage to remove the play from the primary linkage so the throttle return spring helps to close the secondaries
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| Posts: 2155 | Location: Gallatin, TN - U.S.A. | Registered: October 12, 2009 |
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DRR Trophy
| quote: Originally posted by Buck2248: A little update after working on carb Saturday, I am now leaning toward the blades binding up in the bore. it just feels catchy when adjusting the idle screws. I really think the blades are catching the walls of the throttle bores, you can her what sounds like scraping when you back the adjustment all the way off and start screwing them in again. Now what to do to fix it? Really sucks spending that kind of $ and its not right. Thanks for all the help guys. appreciate it.
Yes it's ashamed that you can't just bolt it on and go race. I bought one of APD's (brand new from them) throttle stop carbs that when you mashed the throttle if flat fell on its face and shut the motor off. I did what they told me to do by turning the idle screws out a little and it continued to do the same. I sent it to Mark Whitener and paid another $500.00 and he replaced some throttle blades, pump cams and change the jetting as well and it worked perfect. I've have him build three gas carbs and he always hits the mark first time out. I just had him build me a billet BLP for E85, and guess what, it works bad ass. Hats off to you Mark! |
| Posts: 3 | Location: 91740 | Registered: April 15, 2020 |
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DRR Sportsman
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| Posts: 1420 | Location: Under a Truck | Registered: August 23, 2013 |
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DRR Elite
| this is nothing new with APD carbs, been issues for a long time |
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DRR Pro
| The throttle return kit is a BLP part made to work with BLP external linkage shafts. The biggest issue is usually with methanol carbs, and big bore stuff where airflow pulls on the blades to keep them open. John works hard on his stuff but I know he's been really busy lately. Just keep trying the phone. And if you need I can help as well. Mark Whitener RFD Heads FTI Converter Fab Shop Headers Home built 2 circuit Dominator :-) www.racingfuelsystems.com____________ Good work isn't cheap and cheap work can't be good. |
| Posts: 1050 | Location: Florida | Registered: November 16, 2007 |
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DRR Pro
| What exactly are the carbs doing. My APD Maxspeed carb started having what feels like a hitch or sticking point. It sticks and stays about 1500 RPM. If I tap the pedal, it settles back down to 1000 RPMs, where I have it set. Is this the prolem everyone is having with their APD's?
Rob Robertson
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| Posts: 961 | Location: Welcome, MD | Registered: December 06, 1999 |
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DRR Sportsman
| quote: Originally posted by TORQIN: Got em back! Excellent performance so far!
What did they do to fix them?
Rob Livingston
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| Posts: 176 | Location: Waterloo, Iowa | Registered: July 03, 2005 |
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