Friday, January 23, 2009 - 09:59 am, by: Ty Mackay(Duo89)
Hey, i was having trouble with my car it used to missfire alot... so after further investigation i found out its due to cracks in old shtity coil packs. so after so sweeet advice from u guys i was told to use some araldite, i applied araldite, i only applied it on the cracks or was i supposed to just go all around the coil pack?
it was sweet the first time i took it 5k revs but after that it still missfired?
did i not apply enough or did the heat just melt it to goo again?
Friday, January 23, 2009 - 05:25 pm, by: Joe Russell(Joe_r)
That araldite may have cracked if the engine/coilpack was cold when applied... maybe. Heat shrink is quite good as its waterproof and a good insulator, plus once it has been heated and formed it's very hard to re-heat and change its shape, ideal for engine bay areas. Could work quite well
Friday, January 23, 2009 - 05:50 pm, by: Maurice Diggler(Mau_rice)
Daniel Clarke wrote on Friday, January 23, 2009 - 10:20 am:
YOu can try some Heat Shrink! Clear Nail Polish also can work. Realistically though, you cant beat having new coil packs... The car runs properly then
I am running repaired coil packs now, the power delivery is amazing, never felt so smooth haha, Nar, they were rooted, now they're glueed up, no missing, 150rwkw of fury! wow!
Friday, January 23, 2009 - 06:38 pm, by: Rob Rojo(Rob_tt)
Mike Beck wrote on Friday, January 23, 2009 - 02:47 pm:
t get new coil packs.
Yeah, just go and spend hundreds of dollars for the sake of it! ...... not Have another go with heat shrink or high temp araldite and double check to make sure you filled all damaged areas as mentioned I did this over a year ago (30000k's ago) and still having no dramas and still made 254rwkw. Then I would be looking at some 2nd hand ones in good condition for around $100.00. There is no point spending those sort of dollars if your engine is stuffed.
Friday, January 23, 2009 - 06:53 pm, by: David Ormsby(Phoenix)
Do you mean it misses like before or only after 5k? Make sure you check the complete shaft including under the rubber covers as well as where the coil packs bolt to the panel - this thread has pics:
Make sure you use Super Strength Araldite or similar high temp epoxy as normal Araldite does not have the high temperature handling. Do a couple of layers and go at least 5mm either side of the cracks.
Also chuck in a set of new plugs if you haven't already, if they are worn or running incorrect gap you will get a misfire.
Ben Socratous Goo Roo SA I am the fibreglass/kevlar/carbonfibre king!
Friday, January 23, 2009 - 07:42 pm, by: Ben Socratous(Socrates)
Normal araldite starts to lose structual integrity in the upper 60 degree range, infact most epoxies aren't much better. If you manage to get your hands on a high temp one, be aware that most of the decent resins need to reach 'critical mass' before they start to cure, meaning that you may need to use a bit more than you will use due to the fact that small portions don't usually work for professional resins.
Mike Beck Goo Roo New Zealand Soarer Limited UZZ31 V8
Saturday, January 24, 2009 - 09:13 pm, by: Ty Mackay(Duo89)
yeah i dunno my car seems to be running fine now..its not leaking or overflowing or anything anymore, and my oil isnt milky..... so i dont know what happend meh haha, i dont work at the moment i worked for they attorney general and some stuff happend etc... dam female co workers.... so im taking the cheaper alternative until then? haha so ill buy some super heat and try that, i only did one layer so like u guys said a few more layers?
Sunday, January 25, 2009 - 07:50 am, by: David Ormsby(Phoenix)
Yeah definitely get the Super Strength Araldite. It only starts to lose strength after 100deg and when the temperature drops back down it regains its former strength. At higher cylinder pressure (especially under boost) the resistance in the spark gap increases so coils may find easier way out....through a crack.
I wouldn't bother with new coil packs until you have exhausted the other options first (ie new spark plugs and repairing the cracks properly), just because you have the cash to replace them doesn't mean it's the best place for it.
Sunday, January 25, 2009 - 09:22 am, by: Robert Day(Lexsmaz)
The plastic connectors on mine were broken also, i crimped them slightly so they were a tight fit on the electrical terminals & then put heat shrink on the individual wires & pushed them on one at a time, make sure that you get the polarity of the wires correct though .. I just went off one that had good connectors for the wire colour positions / polarity ..
Neil Griffiths Goo Roo NSW I have a Cadillac and a Supercharged Manual V8
Sunday, January 25, 2009 - 06:41 pm, by: Rob Rojo(Rob_tt)
Why spend the money, when majority of the time there is nothing wrong with the actual coil pack, its just the plastic housing that is cracked. Fix that then they are as good as new.
Monday, January 26, 2009 - 12:30 am, by: Ty Mackay(Duo89)
i agree ill work on some other stuff on the car, especially when i can find a cheap fix for the time being, ill do them later with some more araldite.. when i bought the araldite i never saw any in a high temp packaging, there was either normal araldite, or 5 minute or 15 minute araldite, i bought the normal cause all things good come in time ( ie more time for the araldite to harden and be at full strength)
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