4g63t Timing/Cam Issues

[Rebecca Parker]

Hi all Hoping you could Help,
Have just replaced the head gasket on my 4g63t and all went well except now while trying to get the Cam Belt back on.
I cant seem to get the timing lined up if I line up the crank I cant line up cams its like pistons are hitting valves?
and if I line up cams then I cant line up crank same problem please help

 

[SrKegler]

Hi Rebecca. Welcome to the forum. Before you cause any damage, with the timing belt off, rotate the crankshaft about 1 tooth counterclock wise from the timing mark. Then put the cam sprockets with the dowel pins pointed up and the marks on the inner portion almost lined up. Then use something to secure the belt to the exhaust cam with something. I use zip ties. Then put a 17mm wrench on each sprocket bolt in a way that you can squeeze them together with one hand. Squeeze them until the marks are lined up, and put the belt over the intake sprocket, zip tie it in place. You can now let loose of the wrenches. Check to make sure the marks are still lined up.

Feed the belt around the idler pulley, pull the slack out of the belt, then around the oil pump sprocket. You have checked to make sure the balance shaft is in phase havent you? Once I get the belt around the oil pump sprocket, I put a clothes pin between the belt and the front case housing to hold it in place.

Feed it around the crank sprocket, pulling the slack out and rotating the crank clockwise to the timing mark. Put another clothes pin under the crank to hold it in place.

Feed it over the tensioner pulley, adjust tension, remove the zip ties, spin the engine over 6 times and check all the timing marks again. Let it set for about 30 minutes and recheck the tension.

 

[Rebecca Parker]

OK so we can get to getting the belt on, We have no balance shaft (Previous owner has removed it) we are 1/2 degrees off dead center and now the valves hitting pistons and we cant move it at all HELP PLEASE

 

[Rebecca Parker]

ok you'll laugh But FIL put cams back on and he put intake on exhaust and visa versa ....... So lesson for all cams round wrong way causes issues

 

[96 GSX LOVE]

With the cams backwards you couldn't move it up or down?

 

[Rebecca Parker]

With the cams backwards you couldn't move it up or down?

Could move the crank and could move the cams but timing wouldnt line up and it almost seemed like we had a bent valve, the way we spotted them on backwards is that the intact cam has two lines cut into it for the cam angle sensor

 

[96 GSX LOVE]

So no matter what the timing marks would t line up?

 

[SrKegler]

Marks should have lined up regardless. Something doesn't sound right.