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timing stuff help please

vh2nv

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hey people im back my timing is up the **** and i need serious help ive got my car timed to top dead but i dont know where the leads at the dizzy are supposed to be and where the rotor button suppose to be positioned for top dead the engine is a 253 v8 i need this help asap people thanks
 

BENJAMUM

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the rotor button has to be pointing to number 1 spark plug do you have a repair manual to get the fireing number
 

vh2nv

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yeh but i think dizzy timings out
 

Crossy_014

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You dont fire the spark at TDC, Im not sure of the exact specifications for your model commodore but the spark needs to be fired at 8-12 degrees BEFORE TDC due to "flame front propogation" which basically means that all the fuel doesnt ignite instantly.
 

Crossy_014

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also the rotor arm should be positioned so when u give it the slightest tap, the contact breaker points spark. I timed my mates VK thursday and i runs beatifully
 

Crossy_014

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its not hard to do at all

u just need to know the firing order of your engine(manual or google it) and when the spark fires on your model(my guess is 10 degrees before TDC), position the rotor arm on piston lead #1(slightest tap makes spark), put the dizzy cap on and plug in the piston leads accordingly
 

vh2nv

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yeh man ive done all that i need to know where the rotor button is suppose to be any pics would help
 

leigh 7005

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rotor button should be facing #1 plug 1 plug is drivers side at the front post how this went
 

vh2nv

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hey man if you have pictures it would help and wat you at the front post get back to me asap thanks
 
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