Re: How to tell if engine was broken in properly?
[Re: derekeh]
#576616
01/08/10 03:13 PM
01/08/10 03:13 PM
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Joined: Mar 2003
Posts: 15,491 the boonies
aarcuda
I Live Here
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I Live Here
Joined: Mar 2003
Posts: 15,491
the boonies
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a few minutes wouldnt have hurt it.
was the cam degreed when installed? it may be way off? also, whats your timing set at?
It's got a cop motor, a 440 cubic inch plant, it's got cop tires, cop suspensions, cop shocks. It's a model made before catalytic converters so it'll run good on regular gas.
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Re: How to tell if engine was broken in properly?
[Re: derekeh]
#576617
01/08/10 03:46 PM
01/08/10 03:46 PM
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Joined: Feb 2005
Posts: 4,884 Michigan
MNobody
master
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master
Joined: Feb 2005
Posts: 4,884
Michigan
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If it got too hot you would already see signs of damage, coolant leaks, blow by, oil smoke out the exhaust that doesn't go away. I think the stock bottom end and that intake are hurting you. Someone will chime in that knows more. Sounds like some carb tuning and timing adjustments are in your future. When i was a kid i fired up my 440 for the first time and i had a geyser of water shooting out the radiator(air pocket) she got up to 230 on the mechanical gauge and i shut her down quick.Beat the crap outta that motor for 6 years, never had problems.
Last edited by MNobody; 01/08/10 04:08 PM.
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Re: How to tell if engine was broken in properly?
[Re: derekeh]
#576618
01/08/10 04:05 PM
01/08/10 04:05 PM
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Joined: Sep 2005
Posts: 6,516 Santa Cruz, California
Lefty
master
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master
Joined: Sep 2005
Posts: 6,516
Santa Cruz, California
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Quote:
It just simply has no power and has a very inconsistent idle.
Unless it's about to self destruct, that sounds like a tuning issue rather than a break in issue to me. What do the spark plugs look like?
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Re: How to tell if engine was broken in properly?
[Re: Lefty]
#576619
01/08/10 04:23 PM
01/08/10 04:23 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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I have an eddy 600 on a stock 318 & the idle is also inconsistent. What is your timing and cranking compression and possibly a leakdown for how good the rings sealed & read this excellent info on ring breakin "breakin secrets" (takes 5 minutes). www.mototuneusa.com
live every 24 hour block of time like it's your last day on earth
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Re: How to tell if engine was broken in properly?
[Re: aarcuda]
#576625
01/08/10 08:41 PM
01/08/10 08:41 PM
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Joined: Oct 2004
Posts: 480 Kentucky, USA
derekeh
OP
mopar
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OP
mopar
Joined: Oct 2004
Posts: 480
Kentucky, USA
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The cam is a hughes whiplas... here are the specs copied from their site: Camshaft Technical Details Intake Valve Lift 1.5 Exhaust Valve Lift 1.5 .512" .518" Intake Valve Lift 1.6 Exhaust Valve Lift 1.6 .546" .552" Intake Duration at .050" Exhaust Duration at .050" 223° 236° Lobe Separation Angle 107º Intake Opening at .050" Exhaust Opening at .050" 7.5° BTC 48° BBC Intake Closing at .050" Exhaust Closing at .050" 35.5° ABC 8° ATC Min. Suggested Cylinder PSI Sweet Spot RPM 2000-5300 Im unsure of the compression... its stock 1970 pistons and J heads that have been "mildly" shaved just to clean them up. I am using the thin mopar gaskets... they are .026 I think? So compression shouldnt be low. Carb is an edelbrock Performer Series 600 cfm... its about 10 years old... works great on other engines... just not mine. Did not degreee the cam.. just lined the dots... so maybe I should go back and degree. All of the plugs fire if I pull them out individually to check. Here is the distributor I just installed... white performance distributor and Im using a blaster 3 coil. Before this setup I was using a factory distributor and coil with Mopar orange box that all works great on other engines. The new setup makes it start easier but thats about it. The initial timing I have had anywhere between 8 and 15 degrees and it doesnt run good anywhere in there. I dont know what my total timing is now. Im running vacuum advance now but it seems to idle worse and have less power with it. Im unsure of my vacuum at idle.. im thinking I was around 15 idling at 900 rpm... I can check again tomorrow. What else?
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Re: How to tell if engine was broken in properly?
[Re: derekeh]
#576626
01/08/10 09:12 PM
01/08/10 09:12 PM
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Joined: Oct 2009
Posts: 276 Temecula, Ca.
zzyzxpat
enthusiast
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enthusiast
Joined: Oct 2009
Posts: 276
Temecula, Ca.
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Good reason for firing new motors without a themostat. Break-em in and then install.
" The last official act of any goverment, is to loot the treasury" George Washington
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Re: How to tell if engine was broken in properly?
[Re: zzyzxpat]
#576627
01/08/10 09:19 PM
01/08/10 09:19 PM
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Joined: Nov 2004
Posts: 843 Suffolk,VA
ireland383
super stock
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super stock
Joined: Nov 2004
Posts: 843
Suffolk,VA
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1.Put a vacuum gauge on it. 2.Clean out carb real good. 3.Check to make sure intake is not sucking oil.4.Do a compression test Good luck!
Last edited by ireland383; 01/08/10 09:20 PM.
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Re: How to tell if engine was broken in properly?
[Re: ireland383]
#576628
01/08/10 09:47 PM
01/08/10 09:47 PM
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Joined: Mar 2003
Posts: 15,491 the boonies
aarcuda
I Live Here
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I Live Here
Joined: Mar 2003
Posts: 15,491
the boonies
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thats not a bad cam. it will idle pretty rough so set your timing at at least 15. maybe up it to 18. figure out what the timing is at 2500 rpm and make sure it doesnt go above 36 or so. see if the distrib can be adjusted to limit the timing. the 600 carb is pretty small. but it should run if there isnt anything wrong with it. make sure the accelerator pump is pumping gas as soon as the throttle opens. is the harmonic balancer new? was it checked to make sure the TDC mark is really TDC? something wrong and it may be the cam is not installed right or the timing may be way off or the carb is messing with you. really need to go at it one bit at a time
It's got a cop motor, a 440 cubic inch plant, it's got cop tires, cop suspensions, cop shocks. It's a model made before catalytic converters so it'll run good on regular gas.
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Re: How to tell if engine was broken in properly?
[Re: derekeh]
#576629
01/08/10 09:53 PM
01/08/10 09:53 PM
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Joined: Mar 2007
Posts: 3,281 West Coast, USA
jbc426
master
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master
Joined: Mar 2007
Posts: 3,281
West Coast, USA
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Do a compression test and post the results. Check for vacuum leaks and eliminate them if found. Re-curve the distributor for less mechanical advance, so you can run more initial timing and not exceed 36 degrees total.
1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's 1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)
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