Timing help!!!!!!

[MYYellowTY]

Ive done a complete tune-up except timing.So I figured Id go all out on it and did compression test and ALLS GOOD THERE!!!! :tup: But I rotated it to TDC and checked the timing and the mark is way off!!! Its at 12 BTDC!!!Is this normal or odd.I figured a few degrees,but.....??? Should I just mark it at the 0 mark its lined up at now and unplug the wire and time it???We rotated it back and forth 8-10 times and are pretty much right on.Is it the balancer rotated at the seal or ???Please help!!! Have it tore apart waiting to get some feedback.

 

[MYYellowTY]

Re: Timing help!!!!!!

Ok so I just painted a white line on the balancer at my 0 mark and started the truck.The timing was at 5 Btdc with the wire hooked up, and after I unplugged it it was about 12 ATDC.Which I had it being about 12 BTDC off on the balancer when I marked it with paint.This make sence???Anyone please chime in.I dont dare risk driving it around if im wrong.Please you GURUS, Help me out!!!!

 

[Black Knight]

Re: Timing help!!!!!!

Yeah mine is the same way you have to find TDC each time you check the timing, these balancers leave much to be desired. As long as you are at TDC on the compression strock and you painted the balancer at O, then unplug the wire and time it accordingly every thing should be OK as long as your timing chain is in good condition and your distributor and rotor are where they should be.

 

[James Thomas]

Re: Timing help!!!!!!

Sounds as though your stock balancer may have slipped.This is a known problem with 4.3's.
If you are pretty good with a wrench try this. Do your no. 1 TDC check and make sure it's TDC firing! If your balancer TDC mark is off more than a degree or so, the balancer needs to be replaced because the rubber has let go and the outer ring where the timing marks are is loose.You may not be able to move it with your hand but if the timing mark is off, trust me it needs to be replaced A.S.A.P.

If you gotta drive it (which I don't recommend if the balancer is bad), while it's at TDC, mark a new line and set your timing from there. Drive it easy if the balancer is slipped, I have seen them last for years (just couldn't set the timing) but cause no damage. I have also seen them let go at dailydriver speeds and take out the belt and tensioner, water hoses and damage the radiator. At racing R.P.M.'s it gets REAL UGLY. Pioneer has a realy nice all steel blancer and its S.F.I. approved I think, It's a replacement for stock and won't break the bank either!

_____________
James Thomas

 

[Black Knight]

Re: Timing help!!!!!!

Sounds as though your stock balancer may have slipped.This is a known problem with 4.3's.
If you are pretty good with a wrench try this. Do your no. 1 TDC check and make sure it's TDC firing! If your balancer TDC mark is off more than a degree or so, the balancer needs to be replaced because the rubber has let go and the outer ring where the timing marks are is loose.You may not be able to move it with your hand but if the timing mark is off, trust me it needs to be replaced A.S.A.P.

If you gotta drive it (which I don't recommend if the balancer is bad), while it's at TDC, mark a new line and set your timing from there. Drive it easy if the balancer is slipped, I have seen them last for years (just couldn't set the timing) but cause no damage. I have also seen them let go at dailydriver speeds and take out the belt and tensioner, water hoses and damage the radiator. At racing R.P.M.'s it gets REAL UGLY. Pioneer has a realy nice all steel blancer and its S.F.I. approved I think, It's a replacement for stock and won't break the bank either!

_____________
James Thomas

Isn't that pretty much what I said. LOL :tup:

 

[MYYellowTY]

Re: Timing help!!!!!!

WOWWWWWWW!!!!Let me tell you that 12degrees advanced gives some good launches but is flat in middle and top of power band.Mannnnnnnn this is like a new truck now.All tuneup has been done with all MSD pluid a 6a and coil and its purring.Or I mean ROARING!!! :rotf: Way better now.Ill have to get that pioneer balancer for peace of mind!!!Thanks ALL!!! :tup: