Holley vs. Barry Grant
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Holley vs. Barry Grant

  1. #1
    Senior Member Rivernut's Avatar
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    Default Holley vs. Barry Grant

    As discussed in a previous thread I am replacing a Holley 600 cfm marine 4160 vacuum secondary carb with a Barry Grant Marine Demon 650 cfm vacuum secondary carb. I have read many complaints online about quality control issues with the Demons. I went through the carb and found the following problems. The accelerator pump cam lever needed a bend to line up with the pump lever. Many screws loose. A screw that holds the vacuum secondary canister to the main body was missing. 

    One of the fuel bowl screws was cross threaded at the end and required a tap and die treatment. There was no lube on any of the wear surfaces such as the accelerator pump shaft and plastic cam. The carb was totally void of any grease or oil. The jets were too tight to remove by hand using the proper jet tool. The secondary linkage is too loosely made, it flops around. The carb came with no throttle link or air cleaner stud. This stuff is not a deal killer for me because I grew up with Holleys and can easily spot problems like these and fix them with my bin of parts, but what if someone who knew nothing about this stuff bolted that carb up as it came? The secondary would not work and the accelerator pump linkage would eventually slip off and fail. Rather ironic that the carb came with an inspector's name or ID on it. I could have prepped that carb better at age 16. The quality of the the main body, fuel bowls and metering blocks appears superior to Holley. I have not finished the install as I'm working out the linkage and relocation of the ignition coil, circuit breaker, and solenoids. I hope they did better on the insides that I can't see. Some people said I should have gone with a Holley, but they don't offer a carb of this style and size in marine configuration. I'll post an update when it's runnin if I survive the engine fire.
    Last edited by Rivernut; 07-27-2010 at 07:27 AM.

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    Super Moderator HammerDown's Avatar
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    As long as a base plate screw doesn't fall out...run it
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    Senior Member Rivernut's Avatar
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    I tightened those! They were a little loose.

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  6. #4
    gn7
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    Hard to believe he had to file for bankrubtcy protection in Oct 2009. Of course I don't know how much QC had to do with it. But if you have a bad QC problem you better have superior customer relations. And they don't. The consumer is your last inspector. You can't fix a QC problem if you never admit you have one.



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    Boat Nut sleekcrafter's Avatar
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    I had a demon 850, we chased for 2 years. Had a surge we could never over come. The carb was out of waranty, by the time it was isolated to the carb. The cs reps would only tell me the carb was too big for the application, and tear you a new one for calling back. The engine never make enough power, chased ignition, cam timing, valvetrain, compression, everything. Took the linkage out of the secondaries, and ran the engine off the secondaries, it pulled better than both together. Ran it off the front side, it surged as usuall. We could never run enough ignition 28* advance, or it would ping. I pitched a bitch looking for help, and answers on YB. I got a pm from the bgtech, I told him the tale, and was offered return the carb for flow testing. I noted one of the venturies was partialy dislodged. The carb came back with flow sheet, popped it on and ran it out. The carb performed as it should have from day one. The ignition advance was reset to 34* and it's a performer now. I publicly comended BGTECH for the help, and covering the issue, even with it out of waranty.
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    Senior Member Rivernut's Avatar
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    Hey! No disfiguring fire! I Took the boat out on it's maiden voyage with the new carb. Noticed an additional Barry Grant issue with the choke linkage hitting the rim of the air cleaner. Mostly an issue when using a carb stud to mount the air cleaner, not much wiggle room to get it on and off. It performed decent. The engine picked up about 50 rpms from the old carb. It had a slight stumble / lean bog on acceleration and felt somewhat flat at higher rpm's gaining nothing for rpm's or speed beyond 3/4 throttle @ 4,250. I had the family and beach stuff loaded up with me so it was difficult to do much tinkering.
    Here's a video my wife shot with her IPhone.

    Last edited by Rivernut; 07-29-2010 at 03:53 AM.

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  9. #7
    gn7
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    Quote Originally Posted by sleekcrafter View Post
    I had a demon 850, we chased for 2 years. Had a surge we could never over come. The carb was out of waranty, by the time it was isolated to the carb. The cs reps would only tell me the carb was too big for the application, and tear you a new one for calling back. The engine never make enough power, chased ignition, cam timing, valvetrain, compression, everything. Took the linkage out of the secondaries, and ran the engine off the secondaries, it pulled better than both together. Ran it off the front side, it surged as usuall. We could never run enough ignition 28* advance, or it would ping. I pitched a bitch looking for help, and answers on YB. I got a pm from the bgtech, I told him the tale, and was offered return the carb for flow testing. I noted one of the venturies was partialy dislodged. The carb came back with flow sheet, popped it on and ran it out. The carb performed as it should have from day one. The ignition advance was reset to 34* and it's a performer now. I publicly comended BGTECH for the help, and covering the issue, even with it out of waranty.
    I don't commend them one bit. They only took care of your problem because you hung them out on YB. Thank God for the internet. Yes there are companies watching. And it will get them off their respective asses. But why couldn't they just take care of it with the first call. Imagine the what the post "could" have said. ONE CALL AND THEY SENT ME A NEW CARB! But that isn't the way it went down is it. He will change his ways, or the company is doomed.



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