Re: Hughes 230/38 cam,rough idle..
[Re: drumcat]
#1001146
05/28/11 02:28 AM
05/28/11 02:28 AM
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Joined: Jan 2003
Posts: 9,826 las vegas
70AARcuda
master
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master
Joined: Jan 2003
Posts: 9,826
las vegas
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carb is not going to smooth out the idle...
you are going to get a lumpy idle because of the duration of the cam...
best thing is to make sure your timing is correct...and re-curve the distributo to bring in the advance faster..
Tony
70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: Hughes 230/38 cam,rough idle..
[Re: gch]
#1001150
05/28/11 01:22 PM
05/28/11 01:22 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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Asumeing you have a low compression motor as in 8 to one or so then bumping it up to around 10 to one would help smooth it out. Advancing the idle timing to 18* or so should help it how it is but it is never gonna be smooth. Mabey some poly motor mounts will keep the engine from shakeing so much but will instead shake the car more. A 4 corner idle circuit carb should in theory help but never worked for me. Last thing I can think of is to turn the idle up to around 1000 RPM, mabey more if you can stand it.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Hughes 230/38 cam,rough idle..
[Re: HotRodDave]
#1001151
05/28/11 03:34 PM
05/28/11 03:34 PM
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Joined: Jun 2008
Posts: 3,916 usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,916
usa
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i have a 440 with an engle k65 solid, 238@.050-.510 lift, 9.3:1 compression and its smoother than a babys butt. check your ignition wires, look for dirt in the carb, intake leaks, etc., and re-curve the distributor.
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Re: Hughes 230/38 cam,rough idle..
[Re: lewtot184]
#1001152
05/28/11 03:37 PM
05/28/11 03:37 PM
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Joined: Jan 2005
Posts: 12,419 Kalispell Mt.
HotRodDave
I Live Here
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I Live Here
Joined: Jan 2005
Posts: 12,419
Kalispell Mt.
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A solid will idle better than a same size hydro because the valve is not opening during part of the duration while the lash is being taken up. Also he has a few degrees more over lap if your cam and his have to same LSA. I don't see either one of the LSAs mentioned.
I am not causing global warming, I am just trying to hold off a impending Ice Age!
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Re: Hughes 230/38 cam,rough idle..
[Re: drumcat]
#1001156
05/28/11 07:37 PM
05/28/11 07:37 PM
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Joined: Jun 2008
Posts: 3,916 usa
lewtot184
master
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master
Joined: Jun 2008
Posts: 3,916
usa
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another thing to look at is lifter preload. too much will cause the engine to idle rough. the lsa on the cam i mentioned is 111 degrees. it has 292 degrees of seat timing, 148@.200 at the lobe, 152@.200 at the valve. a solid tappet will idle better than an hydraulic. but, this engine combo does not lope, just a moderate rumble typical of lower compression engines. i did a bunch of tuning, built mucho distributors until i was happy. there is no jumping around in the engine bay.
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Re: Hughes 230/38 cam,rough idle..
[Re: drumcat]
#1001158
05/29/11 02:58 PM
05/29/11 02:58 PM
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Joined: Aug 2007
Posts: 6,095 Valencia, España
NachoRT74
master
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master
Joined: Aug 2007
Posts: 6,095
Valencia, España
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I can't find the hughes camshaft specified sorry, is just some curiosity about camshaft specs and seller descriptions for it
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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