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76elimspecial
07-14-2005, 06:54 AM
Ok Got My Eliminator With Freshly Rebuilt 460 (everything New) Out For The Test Run Yesterday. When Accelerating Through Low Rpm's 1000-3400 It Lags And Sputters. Even Once You Get The R's Up You Can Hear It Fluctuating Probably 100 R's. It Seems Once The Secondaries Open All Is Good. Plugs Don't Look Too Black. Seems To Me It Is Runnin Lean. Is That A Goood Guess??? Oh Yeah Accelerats Fine On The Trailer Without A Load On It. It Has A Holley 800dp. Motor Is Approx 500hp, Mild Cam, Performer Rpm Manifold. Any Ideas??
SmokinLowriderSS
07-14-2005, 03:15 PM
I'm suspecting rich in the primaries. The seccondaries may be OK and be "fixing" the problem WOT but the missand surging I suspect. Make sure there are no vaccume leaks. Drop the primaries 2 jet sizes and drive some more.
FHI-prez
07-14-2005, 04:13 PM
Well since it is possible that it is LEAN and it is possible that is it RICH (among other things of course). I would suggest going up a couple of sizes and see what happens, not down. You don't want to run a new motor lean! If you go up two sizes in the jets and it gets worse, then you might want to go down a size or two from where you started. But I would not recommend assuming that it's rich and leaning it out. You won't hurt anything by running it too rich. You can hurt a LOT of things by running it too lean. I know you probably wouldn't run it too long, but since it's really a crap shoot, I'd err on the side of caution. Checking for vacuum leaks is a good idea like he said too. Check timing. Check vacuum to dist if it's vacuum advance, that sort of thing. I seriously doubt you are running too rich in the primaries if the jets in the carb are stock. But I guess anything is possible, the 460's do like the drink tho.
Nick
76elimspecial
07-14-2005, 08:55 PM
Thanks For The Info Guys. After Looking Into It A Little I Think Its Probably Runin Rich Cause The Primaries Arent Stock. But I Do Think Its A Good Idea To Move Up First So I Dont Make The Mistake Of Runin Too Lean. Thanks.
Wally_Gator
07-15-2005, 05:43 AM
Does the fluctuation of 100 r's happen under load?
If so, you may want to look at the power valve. You may need to change it.
Get a vaccum gauge and check your cruising vaccum and get the appropriate power valves..
Sounds like you may have mroe than one thing goin on here.
76elimspecial
07-15-2005, 06:19 AM
Ill Check That Too. Thanks. Should Get Er Done Today.
Wally_Gator
07-15-2005, 09:50 AM
Ill Check That Too. Thanks. Should Get Er Done Today.
Git'R'Done....
SmokinLowriderSS
07-15-2005, 03:40 PM
Good call FHI. :smile: It is best to err on the safer side. If he makes ir worse going richer he STILL knows which way to go next, and nothing is broke.
Captain no fun
07-16-2005, 01:24 PM
Yes, do your tuning with a vacuum gauge. If you're runnung holleys, make sure you have a number on your power valves at least a couple of #'s below your cruise vacuum point. Ex. if you cruise @ 3000 RPM 12" Hg, you want a power valve # 10. That way when your vacuum drops a couple of points, you get more fuel then. How does it idle?
76elimspecial
07-16-2005, 04:03 PM
Yes, do your tuning with a vacuum gauge. If you're runnung holleys, make sure you have a number on your power valves at least a couple of #'s below your cruise vacuum point. Ex. if you cruise @ 3000 RPM 12" Hg, you want a power valve # 10. That way when your vacuum drops a couple of points, you get more fuel then. How does it idle?
IT IDLES FINE. JUST GOT BACK. AFTER GOIN DOWN WITH PRIMARIES RAN A LTTLE LEAN , WENT UP 2 WITH PRIMARIES AND DOWN ONE WITH SECONDARIES RUNNIN GOOD ALL THROUGH RPM'S OTHER THAN A HESITATION OUT OF THE HOLE. I THINK THE PRIMARIES ARE A LITTLE RICH, BUT IF I DROP DOWN IM BACK TO WHAT I STARTED WITH?? DIDNT HAVE A VACUUM GUAGE TO CHECK POWER VALVES. GUESS THATS NEXT.
SmokinLowriderSS
07-16-2005, 05:01 PM
Yes, you can adjust the "size" of power valve to get rid of that hesitation, you time it's opening that way. If it bogs, it is opening too soon, need lower #. If it hesitates, feels like a flat spot, need a higher #. Also, with a hesitation, what size accelerator pumps you running? I'm running a 30cc fwd and a 50cc on the seccondaries in back. Also another WOT plug run wouldn't be a bad idea (yea, plugs start to get expensive after a while. :D :D
http://www.dragstuff.com/techarticles/how-to-read-plugs.html
1wild-ride
08-10-2005, 07:16 PM
you can check your float levels ,also check if you have jet extenders in there as well ,when you hit the gas and the boat lifts up the levels and or jets can run out of fuel for a split second ,also check your squirter sizes?
Mighty Thor
08-10-2005, 09:51 PM
Just get rid of the Holly and get a carb that works! (that ought to start trouble)
CVX20Dustin
08-11-2005, 12:52 AM
I would check to see when all your timmings in. My 460 was sluggish out of the hole and had a flutter sound from the exhaust.Put the lightest spring in and now its way better out of the hole and no more flutter sound.
SmokinLowriderSS
08-11-2005, 03:02 AM
Just get rid of the Holly and get a carb that works! (that ought to start trouble)
Yea, that'l work (make trouble) :eek:
I'm a Holley fan so I'll just ignore it, in the interests of peace and brotherhood of course. :cool: :cool: :D
Havasu47
10-20-2005, 01:48 PM
Hey 76,
Way to waste everyones time!!!!!! LMAO
Shall we tell them it was the timing mark off on the balancer?? Timing was retarded!!!
Just going through all your threads and harassing you :hammerhea :D
76elimspecial
10-20-2005, 06:23 PM
Hey 76,
Way to waste everyones time!!!!!! LMAO
Shall we tell them it was the timing mark off on the balancer?? Timing was retarded!!!
Just going through all your threads and harassing you :hammerhea :D
OH ITS LIKE THAT. SHALL WE TELL THEM IT WASNT MY FAULT????? :jawdrop: :idea:
396_WAYS_TO_SPIT
10-20-2005, 06:27 PM
better to be fat and happy then to be lean and skinny!!!! I run all my new motors on the fat side! i would rather re-ring a motor than remachine and build one;)
just my .02 pennies;)
Havasu47
10-21-2005, 08:00 AM
OH ITS LIKE THAT. SHALL WE TELL THEM IT WASNT MY FAULT????? :jawdrop: :idea:
Don't feel guilty. We, (your loving Hot Boat family), are here for you, just let us in so we can help you! Remember, only you can make yourself happy. Start every day by looking in the mirror and say: "you are loved" :rollside: :rollside: Even your boat is "special" in our eyes. Next time you are up in a tree saving that little kitty, stop and look around at the beautiful world we live in. Dont be sad, your boyfriend will call you back in time. :hammerhea :D :D