Idle question
#11
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Ran a very similar setup to yours last year and yes, that was normal for me. The idle drop is hard to get out but as stated earlier, is quite normal for that cam. If you are getting a bang at shift it won't hurt, mine has done it for years and years. It is part of the equation when you build over stock and especially with any kind of cam. I'm getting a 600-800 RPM drop now that I've added a blower, that's even harder to deal with. PS- don't take timing away. Add it if you can, it will help a bit.
#12
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Thanks for the advice.. Just got done, tuning yet again..
double checked the timing. it was closer to 38.. I never did check it last week after I added the 6+ box.. Got it at 34 now.
Also, got the carb as best as I can get it.. idle is 650 in gear, 950-1000 out.. Sounds like this is normal, and the best it will get.
RLW, why do you not use the start retard? Seems to me like a win-win situation??? I have had it turned on for a week now, no issues with it.. Curious
Thanks again
John
double checked the timing. it was closer to 38.. I never did check it last week after I added the 6+ box.. Got it at 34 now.
Also, got the carb as best as I can get it.. idle is 650 in gear, 950-1000 out.. Sounds like this is normal, and the best it will get.
RLW, why do you not use the start retard? Seems to me like a win-win situation??? I have had it turned on for a week now, no issues with it.. Curious
Thanks again
John
#13
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John,
I have experimented with the start retard and without it. It doesn't seem to make any difference, most of the time. There has been a couple times where I would get that slow "over the hump" like start but, it has been far and few between. I actually played with it today. I just got done installing a new harmonic damper and wanted to run it in the driveway before tomorrows boating excursion. I initially started with the -20 degree feature.
I started the engine about four times using it. It started fine and idled fine.
I deactivated the start retard and it also started and idled fine.
I always thought the Start Retard was to provide easier starting of high compression engines.
Russ
I have experimented with the start retard and without it. It doesn't seem to make any difference, most of the time. There has been a couple times where I would get that slow "over the hump" like start but, it has been far and few between. I actually played with it today. I just got done installing a new harmonic damper and wanted to run it in the driveway before tomorrows boating excursion. I initially started with the -20 degree feature.
I started the engine about four times using it. It started fine and idled fine.
I deactivated the start retard and it also started and idled fine.
I always thought the Start Retard was to provide easier starting of high compression engines.
Russ
#14
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Originally Posted by JohnSchiavarelli
Current Setup: 540 ci Naturally aspired 9.2:1 comp.. Aluminum Heads.
Cam duration is 233in 237ex lift is 600in and 580ex. 112ls.
850 Sea Daemon. The ignition timing is locked out at 34*
Boat runs great..
The boat idles at 900 to 950, and in gear drops to 600-650.
Is this normal?
Thoughts?? Other options? John
Cam duration is 233in 237ex lift is 600in and 580ex. 112ls.
850 Sea Daemon. The ignition timing is locked out at 34*
Boat runs great..
The boat idles at 900 to 950, and in gear drops to 600-650.
Is this normal?
Thoughts?? Other options? John