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Houston we have a problem... Found Problem #666850 04/11/10 11:55 AM 04/11/10 11:55 AM
Joined: Apr 2004 Posts: 976 Woodstock , Georgia Mopar_racer_99 OP super stock
Mopar_racer_99 OP super stock Joined: Apr 2004 Posts: 976 Woodstock , Georgia	Ok guys, I need to pick your brains. Took car out yesterday, car went 5.70 first pass, then 5.676 , then 5.78 and 5.83, 5.961 .60'fts were 1.30 1.295 1.359 1.379 and 1.417 had to abort run car got loose and went to the guard rail. Noticed upper and lower radiator hose balloning up. Water temp never getting above 180 on gauge. We ran compession check all cylinders 220 except #3 at 200. id we blow a head gasket? Popped the rad cap off temp was 100 and it shot water cause oif pressure. fill rad and ran motor without cap and water was doing like seltzer water. fizzling and dancing. John Last edited by Mopar_racer_99; 04/11/10 06:40 PM. 8.72 @ 154.6 ,68 Charger 578ci 440-1s, 3000# w/drvr, 2150 den/alt NA

Re: Houston we have a problem... [Re: Mopar_racer_99] #666851 04/11/10 12:00 PM 04/11/10 12:00 PM
Joined: Jan 2003 Posts: 19,376 Las Vegas Al_Alguire I Live Here
Al_Alguire I Live Here Joined: Jan 2003 Posts: 19,376 Las Vegas	Time for a leakdown test. It will give you a better state of what is going on in the engine. Ring seal, head gasket seal, guides etc..Sounds like oyu are getting some leakage past the hg to me. "I am not ashamed to confess I am ignorant of what I do not know." "It's never wrong to do the right thing"

Post deleted by Defbob [Re: Al_Alguire] #666852 04/11/10 12:17 PM 04/11/10 12:17 PM
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Re: Houston we have a problem... #666853 04/11/10 12:32 PM 04/11/10 12:32 PM
Joined: Apr 2004 Posts: 976 Woodstock , Georgia Mopar_racer_99 OP super stock
Mopar_racer_99 OP super stock Joined: Apr 2004 Posts: 976 Woodstock , Georgia	Yeah but I was not wanting to hear it, god I hate pulling heads. I believe the motor has Felpro 1039. Opinions stick with felpro or cometics, or? John 8.72 @ 154.6 ,68 Charger 578ci 440-1s, 3000# w/drvr, 2150 den/alt NA

Re: Houston we have a problem... [Re: Al_Alguire] #666854 04/11/10 02:24 PM 04/11/10 02:24 PM
Joined: Nov 2004 Posts: 2,119 sc T tjmarcus1 top fuel
tjmarcus1 top fuel T Joined: Nov 2004 Posts: 2,119 sc	Quote: Time for a leakdown test. It will give you a better state of what is going on in the engine. Ring seal, head gasket seal, guides etc..Sounds like oyu are getting some leakage past the hg to me. rings and guides won't have anything to do with that " fizzle and pressure" in the cooling sys.

Re: Houston we have a problem... [Re: tjmarcus1] #666855 04/11/10 06:29 PM 04/11/10 06:29 PM
Joined: Apr 2004 Posts: 976 Woodstock , Georgia Mopar_racer_99 OP super stock
Mopar_racer_99 OP super stock Joined: Apr 2004 Posts: 976 Woodstock , Georgia	Well we found the problem, the piston domes had been hitting the chambers and leaving peen marks in chambers. ???? How could the motor run so good like this? The gasket just finally had enough and gave up. John 8.72 @ 154.6 ,68 Charger 578ci 440-1s, 3000# w/drvr, 2150 den/alt NA

Re: Houston we have a problem... [Re: Mopar_racer_99] #666856 04/11/10 06:41 PM 04/11/10 06:41 PM
Joined: Jan 2003 Posts: 6,591 Canton, Ohio S Sport440 master
Sport440 master S Joined: Jan 2003 Posts: 6,591 Canton, Ohio	Glad you found it! As to why it ran so good it depends on where the domes were hitting. As long as the contact wasnt cutting off any flame front it shouldnt of hurt any power. In fact if the contact helped with any extra chamber turbulence then it would of only helped, Well untill it lifted the head off the gasket enough times to lose the seal. By the way, did you know that today is the 40th anniversery of Apollo 13 when they made the statement "Houston we have a problem" Was your thread tital intensional or coinceidental. mike

Re: Houston we have a problem... [Re: Mopar_racer_99] #666857 04/11/10 06:48 PM 04/11/10 06:48 PM
Joined: Aug 2003 Posts: 43,228 Bend,OR USA C Cab_Burge I Win
Cab_Burge I Win C Joined: Aug 2003 Posts: 43,228 Bend,OR USA	I had a stocker 340 motor that the pistons where hitting(slightly, not enough to feel when rotating the motor over by hand) the eyebrows on the 915 heads when hot. We corrected that and the motor pick up 20 HP Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)

Re: Houston we have a problem... [Re: Sport440] #666858 04/11/10 06:50 PM 04/11/10 06:50 PM
Joined: Apr 2004 Posts: 976 Woodstock , Georgia Mopar_racer_99 OP super stock
Mopar_racer_99 OP super stock Joined: Apr 2004 Posts: 976 Woodstock , Georgia	Quote: Glad you found it! As to why it ran so good it depends on where the domes were hitting. As long as the contact wasnt cutting off any flame front it shouldnt of hurt any power. In fact if the contact helped with any extra chamber turbulence then it would of only helped, Well untill it lifted the head off the gasket enough times to lose the seal. By the way, did you know that today is the 40th anniversery of Apollo 13 when they made the statement "Houston we have a problem" Was your thread tital intensional or coinceidental. mike Nope it just popped into my head this morning. John 8.72 @ 154.6 ,68 Charger 578ci 440-1s, 3000# w/drvr, 2150 den/alt NA

Re: Houston we have a problem... [Re: Mopar_racer_99] #666859 04/11/10 08:05 PM 04/11/10 08:05 PM
Joined: Apr 2004 Posts: 976 Woodstock , Georgia Mopar_racer_99 OP super stock
Mopar_racer_99 OP super stock Joined: Apr 2004 Posts: 976 Woodstock , Georgia	Now how do I fix the problem polish the chamber and dome and go .010 thicker on the gasket? John 8.72 @ 154.6 ,68 Charger 578ci 440-1s, 3000# w/drvr, 2150 den/alt NA

Re: Houston we have a problem... [Re: Mopar_racer_99] #666860 04/11/10 08:13 PM 04/11/10 08:13 PM
Joined: Jan 2003 Posts: 6,591 Canton, Ohio S Sport440 master
Sport440 master S Joined: Jan 2003 Posts: 6,591 Canton, Ohio	That would depend on How many pistons are hitting and how hard. Will you still have contact even with a .010 thicker gasket?? If its just a few pistons I would clearence those over losing the overall compression with the thicker .010 gasket, even tough it wouldnt be much. mike

Re: Houston we have a problem... [Re: Mopar_racer_99] #666861 04/11/10 09:09 PM 04/11/10 09:09 PM
Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio Challenger 1 Too Many Posts
Challenger 1 Too Many Posts Joined: Feb 2005 Posts: 28,312 Cincinnati, Ohio	Quote: Now how do I fix the problem polish the chamber and dome and go .010 thicker on the gasket? John Just clearance the spot on the piston, don't run a thicker head gasket, that'll give up too much compression.

Re: Houston we have a problem... [Re: Challenger 1] #666862 04/11/10 09:14 PM 04/11/10 09:14 PM
Joined: Jun 2005 Posts: 6,257 gulfport, ms, west mi rowin4 master
rowin4 master Joined: Jun 2005 Posts: 6,257 gulfport, ms, west mi	I think if the pistons were hitting you might want to look at the rod bearings, that solid compression [ hitting the head ] might have given you some clearance you don't need. it's ok to butt heads, just don't do it with a butthead

Post deleted by Defbob [Re: rowin4] #666863 04/11/10 09:48 PM 04/11/10 09:48 PM
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Re: Houston we have a problem... [Re: Mopar_racer_99] #666864 04/12/10 03:59 AM 04/12/10 03:59 AM
Joined: Dec 2006 Posts: 3,667 Arizona C Chris'sBarracuda master
Chris'sBarracuda master C Joined: Dec 2006 Posts: 3,667 Arizona	Quote: Yeah but I was not wanting to hear it, god I hate pulling heads. I believe the motor has Felpro 1039. Opinions stick with felpro or cometics, or? John 1105's Fel Pro.. Chris..

Re: Houston we have a problem... #666865 04/12/10 09:49 AM 04/12/10 09:49 AM
Joined: Oct 2004 Posts: 8,165 Left Coast B BobR master
BobR master B Joined: Oct 2004 Posts: 8,165 Left Coast	Quote: once I had a detonation problem and it sounds like the way mine looked. when re checked they were not hitting I'd look into this. Why would a slight piston to head contact ruin the head gasket?

Re: Houston we have a problem... [Re: tjmarcus1] #666866 04/12/10 10:06 AM 04/12/10 10:06 AM
Joined: Jan 2003 Posts: 19,376 Las Vegas Al_Alguire I Live Here
Al_Alguire I Live Here Joined: Jan 2003 Posts: 19,376 Las Vegas	Quote: Quote: Time for a leakdown test. It will give you a better state of what is going on in the engine. Ring seal, head gasket seal, guides etc..Sounds like oyu are getting some leakage past the hg to me. rings and guides won't have anything to do with that " fizzle and pressure" in the cooling sys. It did not say that they would...I was simply stating that a leakdown was the best way to determine the health of the engine and these issues without a teardown. Read the last sentence again, sheesh Aint my first rodeo ya know.. Do you hjave pictures of these marks? Witness marks are not that uncommon when running a lot of compression, anything more can be a real issue but easy to fix. Just massage the chamber in the area to allow for more room. If they are more than witness marks better have a look at the bearings too. "I am not ashamed to confess I am ignorant of what I do not know." "It's never wrong to do the right thing"

Re: Houston we have a problem... [Re: Mopar_racer_99] #666867 04/12/10 10:30 AM 04/12/10 10:30 AM
Joined: Aug 2009 Posts: 2,049 Mooresburg, Tn ' '72CudaRacer top fuel
'72CudaRacer top fuel ' Joined: Aug 2009 Posts: 2,049 Mooresburg, Tn	Quote: Well we found the problem, the piston domes had been hitting the chambers and leaving peen marks in chambers. ???? How could the motor run so good like this? The gasket just finally had enough and gave up. John The engine could have loosened up enough for the pistons to start hitting the heads. (rod , main bearing clearance, piston pin holes, rod bushings, piston skirts wearing letting piston "rock" in the bore), retorqueing head gasket, and also the piston expanding with heat. My new engine is tight, but the domes were lifting the head during mock up with no gasket. I had to clearance the cyl heads to fit with out lifting the head, then went with a .040" gasket. Brian

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