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Re: Hesitation ?? [Re: aspenrt360] #1736766
02/03/15 01:38 AM
02/03/15 01:38 AM
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ademon Offline
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I've had a lean tip in off cruise if that's what your talking about, this is with three different carbs and now with the mechanical 6
Pack! I've had timing as hi as 22 initial and as low as 10. Also I know my pump shot is instant and have gone as hi as 38 on a 400hp 360. I've always used the idle vacuum in gear and go 2 under my car pulles 7.5" and I have 5.5 PV in it now. Make sure your timing and pump shot is right. The next thing I may try is a PV 1 or 2" under a light cruise and see if that helps.

Re: Hesitation ?? [Re: ademon] #1736767
02/03/15 09:28 PM
02/03/15 09:28 PM
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This will not solve all your problems but I think bringing your #1 piston to TDC, rotor pointing to the #1 on the cap will let you know which timing mark you should be using. Once you know, mark it and go off that mark.

Re: Hesitation ?? [Re: moparpoolman] #1736768
02/04/15 01:13 AM
02/04/15 01:13 AM
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Stroker Scamp Offline OP
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Couple of updates
Vacuum is at 8 at idle in gear
The mark on the dampner that has the arrows is TDC

With the vacuum advance plugged initial is set at 17*
When I raise the RPM up the mark jumps like crazy
but it comes and goes in the 34 to 36 range

put a bigger squirter in and hesitation seem a bit better

Any ideas on correcting the jumping timing mark??


footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip
73 Duster 340 street strip 12.79 @ 105
Re: Hesitation ?? [Re: Stroker Scamp] #1736769
02/04/15 03:29 AM
02/04/15 03:29 AM
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ademon Offline
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Where are you at rpm wise when it starts to jump

Re: Hesitation ?? [Re: ademon] #1736770
02/04/15 06:48 AM
02/04/15 06:48 AM
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what kind of dist and springs are you using? advance the timing 2* what size squirter is in it now? did you change the front and back squirter? go up one more size.

Re: Hesitation ?? [Re: ademon] #1736771
02/04/15 10:28 PM
02/04/15 10:28 PM
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Quote:

Where are you at rpm wise when it starts to jump


2k and up


footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip
73 Duster 340 street strip 12.79 @ 105
Re: Hesitation ?? [Re: Quicktree] #1736772
02/04/15 10:30 PM
02/04/15 10:30 PM
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Quote:

what kind of dist and springs are you using? advance the timing 2* what size squirter is in it now? did you change the front and back squirter? go up one more size.



Stock Mopar Dist.
unsure of springs
went from a 26 to a 31 front only now


footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip
73 Duster 340 street strip 12.79 @ 105
Re: Hesitation ?? [Re: Stroker Scamp] #1736773
02/05/15 12:15 AM
02/05/15 12:15 AM
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Romeo MI
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If you pull the dist and add a piece of hose thats
snug on the shaft just a little longer than the space
between the bushing and where the shaft comes through
the dist housing that should take most of the timing
jump out of it.. once you do that and if it corrects
it then use a clamp on sleeve for it(they're cheap)..
might try a bit larger squirter front and rear..
if it gets better try larger... when you went higher
on the base timing did you restrict the max timing..
that takes welding up the slots.. otherwise you will
end up with way too much timing... also.. keep the
vac unplugged at the dist but plug the hose until
you get a handle on this

Re: Hesitation ?? [Re: Stroker Scamp] #1736774
02/05/15 01:02 AM
02/05/15 01:02 AM
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Quote:

Quote:

what kind of dist and springs are you using? advance the timing 2* what size squirter is in it now? did you change the front and back squirter? go up one more size.



Stock Mopar Dist.
unsure of springs
went from a 26 to a 31 front only now


square the squirters same front and rear, fix the dist

Re: Hesitation ?? [Re: Quicktree] #1736775
02/28/15 09:43 PM
02/28/15 09:43 PM
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Update, got the timing at 18* initial and total at 37* for now
so I went up to bigger squirters and hesitation is almost gone, went to 40 in front and a 35 in
back (didn't like a bigger one in back)
Might try to throw a different cam in and see if it likes that.
Thanks for all the help


footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip
73 Duster 340 street strip 12.79 @ 105
Re: Hesitation ?? [Re: Stroker Scamp] #1736776
02/28/15 09:53 PM
02/28/15 09:53 PM
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if you get the right cam you may not need such a large squirter. try a brown or blue one

Re: Hesitation ?? [Re: Quicktree] #1736777
02/28/15 10:56 PM
02/28/15 10:56 PM
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Quote:

if you get the right cam you may not need such a large squirter. try a brown or blue one



That's what I was thinking, I do have the cam kit
so that will be tomorrow.
I did back the timing down to 35* and it seems to like it


footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip
73 Duster 340 street strip 12.79 @ 105
Re: Hesitation ?? [Re: Stroker Scamp] #1736778
02/28/15 10:58 PM
02/28/15 10:58 PM
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car


footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip
73 Duster 340 street strip 12.79 @ 105
Re: Hesitation ?? [Re: MR_P_BODY] #1736779
03/01/15 05:21 PM
03/01/15 05:21 PM
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Quote:

If you pull the dist and add a piece of hose thats
snug on the shaft just a little longer than the space
between the bushing and where the shaft comes through
the dist housing that should take most of the timing
jump out of it.. once you do that and if it corrects
it then use a clamp on sleeve for it(they're cheap)..
might try a bit larger squirter front and rear..
if it gets better try larger... when you went higher
on the base timing did you restrict the max timing..
that takes welding up the slots.. otherwise you will
end up with way too much timing... also.. keep the
vac unplugged at the dist but plug the hose until
you get a handle on this




Put the hose on the distr. shaft
Vacuum advance is plugged
bought a pre set disk from FBO and put that
in the dist. set at 18*
tried a different timing light and the jumping mark has stopped
Now to get the idle and cruise a bit leaner


footbrake N/A SB 408 Scamp 10.10 @ 132 street/strip
73 Duster 340 street strip 12.79 @ 105
Re: Hesitation ?? [Re: Stroker Scamp] #1736780
03/01/15 05:30 PM
03/01/15 05:30 PM
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Posts: 2,825
Sk. Canada
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Quote:

Quote:

if you get the right cam you may not need such a large squirter. try a brown or blue one



That's what I was thinking, I do have the cam kit
so that will be tomorrow.
I did back the timing down to 35* and it seems to like it


Check your center post in the dist cap(where rotor touches) see if its all goobered up. Or smooth..
I had one that got dimply, changed it and back to normal. something to do with the msd, I'm thinkin.

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