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| hans hartman |
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hi,i have 302w efis on lpg-petrol with 10-11\1 compression,using mallory coil and stock distributor,i susspect spark blow out on lpg.whats the best spark step up from the coil?
_________________ R.I.P HANS HARTMAN |
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| Johnson stroker |
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how tight are your gaps and what temp plugs are you running Hans?
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| hans hartman |
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1.2mm on gas plugs,i have a miss at idle i have chased for months,changed leads-3 sets with less than 1k on them,plugs the same,coils-msd,mallory,bosch,relocated the tfi unit.things will get worse when i change the top end to explorer,on my fast rebuild we used 40 thou over size flat tops and decked the block-warped,so the pistons sit flush on deck,e7s where skimed and serviced.seems to run ok after idle.i noticed a better idle with the mallory,msd coils,was thinking about a crane hi 6 or a summit system for more spark.
_________________ R.I.P HANS HARTMAN |
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| Johnson stroker |
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Pull your gaps down to .8 or .9
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| hans hartman |
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ill try it,thanks
_________________ R.I.P HANS HARTMAN |
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| Johnson stroker |
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If you have a miss at idle, no amount of spark gapping will correct it, What condition is your Balancer in? I canged mine on saturday, it made a world of difference. Repco has powerbond on sale ATM, well, they did on saturday..
for what its worth, $160 odd, process of elimination. don't go putting second hand s**t on a motor while trying to diagnose issues, the second hand stuff might be faulty to begin with.
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| TROYMAN |
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yea i agree with the plug gaps, our old lpg au originally had the 1.3mm gap the au2 recommended and would run pretty rough, gapped them down to .88mm and was smooth as silk...lol
if that dont help there is another problem somewhere |
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| hans hartman |
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dc_todd wrote: If you have a miss at idle, no amount of spark gapping will correct it, What condition is your Balancer in? I canged mine on saturday, it made a world of difference. Repco has powerbond on sale ATM, well, they did on saturday.. for what its worth, $160 odd, process of elimination. don't go putting second hand s**t on a motor while trying to diagnose issues, the second hand stuff might be faulty to begin with. my second thought,i have 3 new power bond-nuline balancers-bulk buy,$100 each a while back,or option 3-blown head gasket between cylinders.been reading your thread,nice pick up
_________________ R.I.P HANS HARTMAN |
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| Johnson stroker |
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Go get your intake checked for CO2 then if you suspect a head gasket, thats the first port of call, Throw a balancer on there if you have a fistful of them, you have already spent the coin on them and they are not exactly ng to appreciate or become a rare item in your life time.
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| hans hartman |
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dc_todd wrote: Go get your intake checked for CO2 then if you suspect a head gasket, thats the first port of call, Throw a balancer on there if you have a fistful of them, you have already spent the coin on them and they are not exactly ng to appreciate or become a rare item in your life time. just checked the co2-ok,my engine builder says hb is ok,investigate tomorrow
_________________ R.I.P HANS HARTMAN |
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| EBXR8380 |
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Rough at idle I would be checking compression ??
On gas you MAY have valve recession or tight valve clearance..
_________________ As in ZOOM 126 edition |
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| hans hartman |
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EBXR8380 wrote: Rough at idle I would be checking compression ?? On gas you MAY have valve recession or tight valve clearance.. compression test tomorrow and re gap plugs,try to locate cylinder-s,had a few gaskets blow between cylinders on I6S-gmh
_________________ R.I.P HANS HARTMAN |
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| hans hartman |
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found the problem-new leads-dead on 4-6 the rest work but could be better-sucks, 3 sets pita.
_________________ R.I.P HANS HARTMAN |
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| TROYMAN |
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hans hartman wrote: found the problem-new leads-dead on 4-6 the rest work but could be better-sucks, 3 sets pita. you must be getting crappy leads or your just unlucky |
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| hans hartman |
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TROYMAN wrote: hans hartman wrote: found the problem-new leads-dead on 4-6 the rest work but could be better-sucks, 3 sets pita. you must be getting crappy leads or your just unlucky top gun-  eagle- have to find better as they break off the plugs
_________________ R.I.P HANS HARTMAN |
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