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Re: I still have pinging problems with my 512 [Re: Boise Chall] #964159
04/04/11 06:48 PM
04/04/11 06:48 PM
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Boise Idaho
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Ok TDC ( piston all the way up on #1 cyl) is zero on the Dampner so the Dampner didn't slip and is accurate.

Re: I still have pinging problems with my 512 [Re: Boise Chall] #964160
04/04/11 07:04 PM
04/04/11 07:04 PM
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JohnRR Offline
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Well then bump the timing back up to 34 degrees and go from there .

What is the octane of the fuel you used ?

Re: I still have pinging problems with my 512 [Re: JohnRR] #964161
04/04/11 07:16 PM
04/04/11 07:16 PM
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Boise Idaho
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I put 6 gallons of no corn 91 octane gas and I didn't mention this in my last post but I put 2 gallons of 110 octane race gas in it also

Re: I still have pinging problems with my 512 [Re: Boise Chall] #964162
04/04/11 07:20 PM
04/04/11 07:20 PM
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Quote:

I put 6 gallons of no corn 91 octane gas and I didn't mention this in my last post but I put 2 gallons of 110 octane race gas in it also




Roll the timing up ...

Re: I still have pinging problems with my 512 [Re: JohnRR] #964163
04/04/11 10:52 PM
04/04/11 10:52 PM
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Boise Idaho
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I drove it and no pinging I was able to go full throttle for the first time with this car woohoo it felt good. At about 5,500 It pushed the dipstick out of the tube and oiled the steering gear box and engine compartment up pretty good. One problem solved one more comes up.

Re: I still have pinging problems with my 512 [Re: Boise Chall] #964164
04/04/11 10:54 PM
04/04/11 10:54 PM
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Oklahoma City OK
Cudajon Offline
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Probably getting blowbye from the rings not being seated. Hope it clears up and you didn't wet down the cylinders too much earlier.

Re: I still have pinging problems with my 512 [Re: Cudajon] #964165
04/04/11 10:58 PM
04/04/11 10:58 PM
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Boise Idaho
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Could the rattling of the pistons from the pinging have kept the rings from seating? I have to thank everybody that helped with this problem. I feel like I have a car I can drive and enjoy now

Re: I still have pinging problems with my 512 [Re: Boise Chall] #964166
04/05/11 08:22 AM
04/05/11 08:22 AM
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Cincinnati, Ohio
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Do you have a PCV hooked up right? If not you definetly need one.

Re: I still have pinging problems with my 512 [Re: Challenger 1] #964167
04/05/11 08:59 AM
04/05/11 08:59 AM
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Oklahoma City OK
Cudajon Offline
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My stroker took a while before the blowbye stopped. And yes the detonation could have kept the rings from seating, however the most common cause is a rich condition whereas the cylinder walls get coated with gas and it washes the oil off. Not only will this cause the rings not to seat it could possibly put a lot of stress on the rings causing premature failure. Drive it for a few days now that you've got the detonation solved and run another compression check, it should be a little better. Look for a weak cylinder, which might indicate a problem. My engine finally settled out with 200 +/- 10 lbs.

Re: I still have pinging problems with my 512 [Re: Cudajon] #964168
04/05/11 09:21 AM
04/05/11 09:21 AM
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Lincoln Nebraska
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read "breakin secrets" at www.mototuneusa.com


live every 24 hour block of time like it's your last day on earth
Re: I still have pinging problems with my 512 [Re: RapidRobert] #964169
04/05/11 11:14 AM
04/05/11 11:14 AM
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Cincinnati, Ohio
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I have a friend that had too much pinging and he sensed something was wrong after 6 months after rebuild. He pulled the engine back out and his problem was a cracked ring. That could very well have been what has happen to you with all the detonation you were having! So you think going down to the RC12's from 14's stopped your pinging? 14's
would have been way too hot for your engine, you may still want to go down to an RC10 with that compression you have you will need a colder plug. I am running those plugs in my 383 slightly modified engine with 9.3 comp. Good luck!

Re: I still have pinging problems with my 512 [Re: Boise Chall] #964170
04/05/11 11:21 AM
04/05/11 11:21 AM
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Quote:

Could the rattling of the pistons from the pinging have kept the rings from seating? I have to thank everybody that helped with this problem. I feel like I have a car I can drive and enjoy now




What is your total timing set at ?

Re: I still have pinging problems with my 512 [Re: JohnRR] #964171
04/05/11 12:14 PM
04/05/11 12:14 PM
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Boise Idaho
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34 degrees

Re: I still have pinging problems with my 512 [Re: superbeedave] #964172
04/05/11 12:24 PM
04/05/11 12:24 PM
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Boise Idaho
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I can't say it was changing to colder plugs is what fixed it. I made 3 changes before I drove it.

1. Colder plugs
2. Got rid of the corn tainted fuel and put pure non corn gas in it
3. Added 2 gallons of C-12 Race fuel to 6 gallons of gas.

I did buy a 5.5 and a 6.5 power valves that was going to be the next change if the above 3 didn't work.I'll drive the car normal this weekend ( without getting on it too much ) and try to get the rings to seat. I'll pull the plugs and see how the look if I can go to colder plugs I will.

Re: I still have pinging problems with my 512 [Re: Challenger 1] #964173
04/05/11 12:32 PM
04/05/11 12:32 PM
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Boise Idaho
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I don't have a PCV hooked up I have it venting into the air cleaner. The setup I have has 2- 5/8 hoses 1- out of each valve cover then they join at a tee then I have 1- 5/8 hose going into the air cleaner. Maybe I'm not getting rid of the pressure fast enough ?

Re: I still have pinging problems with my 512 [Re: Boise Chall] #964174
04/05/11 12:44 PM
04/05/11 12:44 PM
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Cincinnati, Ohio
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Why not PCV? There's nothing wrong with it, it don't hurt performance and it insures that you don't blow gaskets out and oil all over. Hook one up, as soon as you said oil out of the dipstick tube, I knew you didn't have one.

You can hookup 3" hoses and it's gonna do the same thing.

Re: I still have pinging problems with my 512 [Re: Challenger 1] #964175
04/05/11 12:56 PM
04/05/11 12:56 PM
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Boise Idaho
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When I first put the car together the goal was as much hp as I could. Last weekends drive made me realize that I need to not worry so much about hp and at least be able to go past 1/2 throttle without pinging and now not blowing oil all over the place. I'll get a PCV setup installed before I beat on it again.

Re: I still have pinging problems with my 512 [Re: Boise Chall] #964176
04/05/11 01:09 PM
04/05/11 01:09 PM
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Cincinnati, Ohio
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Yup, I know what you mean. I did the same thing many years ago. Now I get off on having reliablity just as much or more so than performance.

I love driving my cars on the street, way more fun than just the track.

Can you imagine what your motor bay would look like if you drove the car wide open for like 5 miles at a time on the salt flats or somewhere like that?

Re: I still have pinging problems with my 512 [Re: Challenger 1] #964177
04/05/11 01:20 PM
04/05/11 01:20 PM
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Woodinville, WA
Viol8r Offline
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Quote:

Why not PCV? There's nothing wrong with it, it don't hurt performance and it insures that you don't blow gaskets out and oil all over. Hook one up, as soon as you said oil out of the dipstick tube, I knew you didn't have one.

You can hookup 3" hoses and it's gonna do the same thing.




Agree........you need a PCV, -10 plugs or -6 NGK and 34-36 degrees total timing. If its mostly street driven, all in by 2500rpm. You were just running to hot of a plug.

I run 11:1 on pump gas with -6 NGK on the street, -7 for the track.

Re: I still have pinging problems with my 512 [Re: Boise Chall] #964178
04/05/11 01:50 PM
04/05/11 01:50 PM
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Ontario, Canada
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Put the 6.5 power valve in you will be able to go down to 93 straight then eventually go back down in the primary jets.

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