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Originally Posted by pqjack
(Post 3651161)
worth mentionning...do not use the plugs that have been on the engine for 5 years....just sayin...
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If it is a bravo drive, you need to pull it into neutral before the motor stops spinning.. Sometimes it can make it to neutral.. sometimes not, depends on the bump rings on the gears. They need to be spinning to complete a shift.
So pull it into neutral, as soon as you can after the motor is shut down. I usually slow down and then neutral and kill it.. But in a perfect world, you run it hard then kill it.. But at 80mph I wouldnt try that. :) |
Originally Posted by mrfixxall
(Post 3650696)
if you have a 4v carb do the primary first,take off the flame arrestor and open throttle just until the secondarys start to open, mark the throttle position..run the boat like mentioned and use your mark on the throttle and adjust accordingly,then do the wot..this way you wont run lein on the primary circuit..
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Originally Posted by Mr Gadgets
(Post 3651388)
If it is a bravo drive, you need to pull it into neutral before the motor stops spinning.. Sometimes it can make it to neutral.. sometimes not, depends on the bump rings on the gears. They need to be spinning to complete a shift.
So pull it into neutral, as soon as you can after the motor is shut down. I usually slow down and then neutral and kill it.. But in a perfect world, you run it hard then kill it.. But at 80mph I wouldnt try that. :) |
I would spend the $ & use a wide band 02 sensor to tune it.
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Originally Posted by 87MagnumII
(Post 3651606)
I'm glad to hear I can slow it down some first, wasn't looking forward to killing it at 63 mph, probably would be ok but I think fear of the unknown is what had me a little worried :drink::drink::drink:
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Originally Posted by Thunderstruck27
(Post 3651780)
I was just looking at your avatar...which boat is yours? :lolhit:
I put a new fuel gauge sending unit in last year and the picture is proof that 1/4 of a tank is really almost empty. The guy towing me is my cousin in his Concord Mach III. Boat was running good that day till I ran out of go juice. :evilb: |
Got new plugs in. Had trouble starting it tonight but it's 55* outside and I have the choke set all the way open. Going to readjust choke tomorrow and get the idle adjusted up. It's going to be 80* Monday and I'm off work so I figure this will be a great day for testing (and drinking beer)! I've got a 350 with vortec heads and an LT4 hot cam, performer rpm intake, 650 demon. Elevation on the lake is 2995 above sea level. Carb came with 72 primary, 80 secondary. I jetted down to 70 and 78. Any guesses as to how close I will be? Give your thoughts, is it going to be rich, lean, or damn close? I will post pics of the plugs after I make a couple passes to get your opinions.
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fixx
Originally Posted by 87MagnumII
(Post 3652085)
Got new plugs in. Had trouble starting it tonight but it's 55* outside and I have the choke set all the way open. Going to readjust choke tomorrow and get the idle adjusted up. It's going to be 80* Monday and I'm off work so I figure this will be a great day for testing (and drinking beer)! I've got a 350 with vortec heads and an LT4 hot cam, performer rpm intake, 650 demon. Elevation on the lake is 2995 above sea level. Carb came with 72 primary, 80 secondary. I jetted down to 70 and 78. Any guesses as to how close I will be? Give your thoughts, is it going to be rich, lean, or damn close? I will post pics of the plugs after I make a couple passes to get your opinions.
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Originally Posted by mrfixxall
(Post 3652131)
where is the timing @
I'm going to take some extra plugs with me so I can swap them in and idle back to the trailer and not ruin the readings from wide open runs on the installed plugs The guy at the local race shop told me to bring him the test plugs and he will look at the them under light and magnification to tell better what is going on. I don't know much about fire rings and what not and this guy knows his stuff so I'm trusting him to help me out. |
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