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Post by real57vetteguy on Dec 11, 2012 12:30:51 GMT -5
I loaded it up yesterday and dropped it off at Dave Marcis's shop...... I'm tired of screwing with it!!!!
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Post by real57vetteguy on Dec 11, 2012 21:33:18 GMT -5
UPDATE,
The cam degree was dead on, (I expected so seeing the guy who did the work had degreed more cams than I have seen) the lobes on the cam are perfect, no cam issues, timing chain is a magnum brand, in total the timing mark was not exact but it was very close including taking in consideration piston dwell. Intake port work and head port work was excellent, some of the valve adjustment was questionable but not far off, battery was poor, causing issues with ignition spark and fire. More to come!!!!!!
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Post by mongoose on Dec 12, 2012 7:25:41 GMT -5
Weird... obviously a low battery could affect engine performance... making it fall on it's face. But as you said... when you had the timing retarded it made good power, but just killed starters. So still not making sense... at least to me.
Another random thought... could the bad performance and starter breaking be from two totally separate issues, confusing things?
Maybe the starter isn't shimmed properly, and gets in a bind with the ring gear, and "pow", there goes the starter nose.
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Post by real57vetteguy on Dec 12, 2012 11:32:17 GMT -5
Weird... obviously a low battery could affect engine performance... making it fall on it's face. But as you said... when you had the timing retarded it made good power, but just killed starters. So still not making sense... at least to me. Another random thought... could the bad performance and starter breaking be from two totally separate issues, confusing things? Maybe the starter isn't shimmed properly, and gets in a bind with the ring gear, and "pow", there goes the starter nose. that could be, also I am wondering if the weak battery could have been letting the engine "kick back" instead of powering through turning over the engine resulting in the starters breaking?
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Post by real57vetteguy on Dec 12, 2012 17:52:29 GMT -5
Another update. The carb to intake gasket was leaking, Engine is getting too much fuel, and there are no ports on the carb for vac advance so I was pulling vac from the manifold, evidently this was causing an issue also. Hopefully tomorrow I will know more!
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Post by mongoose on Dec 12, 2012 22:39:08 GMT -5
I found on my Torker intake that a "regular" Holley or similar carb flange gasket didn't have enough material around the outside of the gasket to ensure a good seal. I bought a set of Edlebrock branded square flange gaskets (http://www.summitracing.com/parts/edl-3899), and they are substantially wider, with more than enough coverage to ensure a good seal between the intake and carb.
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Post by real57vetteguy on Dec 13, 2012 8:10:58 GMT -5
thanks Mongoose, I may be ordering a couple
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Post by real57vetteguy on Dec 19, 2012 20:50:12 GMT -5
The golden 442 emblem has to go to Mongoose....... Battery was causing most of the issues, they tweaked on the carb a bit, new jets, adapter was incorrect but main thing was battery, it was a brand new 280 dollar battery GRRRRRR. Tonight the car cranked with a tap of the switch, 3:23 gear and all, from 15 mph with big sticky nitto's it blew the tires off until 50-55 mph, hooked and hit 110 mph in the blinkof an eye WOW
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Post by rickman on Dec 23, 2012 13:43:28 GMT -5
Since everything else is mechanically tight, the only variable is in the distributor - has that been changed? Possible loose rubber on the balancer?
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Post by Deleted on Dec 23, 2012 17:38:48 GMT -5
Mark now you can drive to Dallas on go on the 2013 Power Tour and back to your neck of the woods. Be a member of the long haul gang. I think Phil may come back to Dallas from Phoenix. Lance is taking his 71 442. Ross ( my neighbor) my take his bad ass 86 Grand National.
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Post by mongoose on Dec 31, 2012 12:34:11 GMT -5
So everything's cool now? All your issues were related to a bad battery?
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Post by Deleted on Dec 31, 2012 13:25:17 GMT -5
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Post by real57vetteguy on Jan 2, 2013 22:56:49 GMT -5
So everything's cool now? All your issues were related to a bad battery? Mongoose, Yes most of the major issues were undersized battery, it was very misleading due to the battery, I bought a KinetiK brand, it has tons of reserve power, but not the UMPH to crank a decent compression big block, it was low CCA, it tested fine, would run the lights, stereo etc but fell of its face during cranking. we also tweaked jets a few other minor things
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Post by real57vetteguy on Jan 2, 2013 22:59:23 GMT -5
So you find it ironic that we spent multiple hours working on this car to figure out it was a battery? You being the guru you are would have tested the voltage as well wouldnt you? It tested at 12.9 volts! wasnt this your diagnosis......-------------------------------------------------------------------------------- I know nothing about your engine. But seems to me there`s been no mention of the cam installation. Did you check the grind? I`d check every lobe. re-check index. Is the cam even suitable for your application? If your not confident indexing a cam, or verifying the grind, find someone who REALLY is. Sounds more valve timing than ignition timing. But with all the variables, who knows what you have. Maybe you`ve got one of those big number cams, you know, push to start, full rpm ! Scarey part of the problem is, all that power to break off your starter is being transferred thru the pistons and rods
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Post by real57vetteguy on Jan 2, 2013 23:04:34 GMT -5
Mark now you can drive to Dallas on go on the 2013 Power Tour and back to your neck of the woods. Be a member of the long haul gang. I think Phil may come back to Dallas from Phoenix. Lance is taking his 71 442. Ross ( my neighbor) my take his bad ass 86 Grand National. I think I am going to try to pick it up in the memphis area and run to Charlotte
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Post by real57vetteguy on Jan 7, 2013 1:35:02 GMT -5
hopefully tomorrow its finished. friday the car was put on the dyno AGAIN (GOOD LORD I HAVE A FORTUNE IN DYNO RUNS) it has over time made great and poor dyno runs, ( I guess due to all the changing parts etc) Friday it made a best of 382 hp 448 tq at the tires, Previously I drove it it felt great until about 4500 rpm and lost power, stab it in first blows the tires off and half way through second but them kinda loses it, shift to third pulls hard until 4000 or so. According to the dyno the AFR went loony above 4000. Late friday they called me and said they discovered the carb linkage AGAIN GRRR was only opening the carb a little more than half throttle. the secondaries were not opening, (i have had this problem 3 times, the Lokar cable keeps stretching) they were going to reposition the throttle in the floor pan and replace the cable. all in all im stoked of it making that power without the secondaries opening
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Post by mongoose on Jan 7, 2013 6:26:13 GMT -5
I assume at part-throttle the AFR started to go real lean over 4000 rpm?
I've always used the factory throttle linkage, so I don't have any experience with a Lokar cable, but that just seems weird that a cable designed for this purpose would stretch like that... unless the alignment is so far off that you have to use great force to depress the pedal. And I would think you'd definitely feel that.
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Post by real57vetteguy on Jan 7, 2013 10:13:17 GMT -5
your 100% correct, I am really frusterated with that cable, and your right about the AFR, really lean starting at 4000 and worse as the RPMS increase. On the other side I cant wait to drive it with WOT
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Post by real57vetteguy on Jan 10, 2013 18:12:48 GMT -5
between yesterday and today I put 135 miles on it and its doing great!
thanks for the help guys!
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Post by stan65cutlass on Jan 10, 2013 19:09:27 GMT -5
i think i heard you go by last nite
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