Timing Belt Change In Rb26dett

[nsta]

Hey guys, im going to be doing this tommorow for my rb26,and was wondering what sort of guides people use when doing theirs, ive searched the forums and there seems to be alot of guides written differently,.....

Im doing my belt, tensioner, idler and waterpump all at the same time, and words of advice greatly appreciated, as its my first time, so far, i can see timing marks for my inlet exhast on the cam cover, and also cas marks were there already aswell...

What confuses me is all the marks on the bottom pulley going down the side of it (looking front on at the engine)

Thanks.

[BHDave]

When you remove the harmonic balancer (which you have to do to get the belt on) there is a notch on the cover and a mark on the crank gear that line up when the engine is at TDC.

[r33turb]

the notch on the crank gear and mark on the balancer cover are totally different, like 2pm (cover) and 5pm (crank gear)....which should i be getting right....im so confsed and read many guides..

[Simon-S14]

both marks line up at TDC!

[BHDave]

but they line up with different marks....

[Simon-S14]

the mark on the crank cam (the dot) lines up with a mark in the alloy case that surrounds the cam, with this mark lined up (has to be dead on) slide the balancer on and the mark on the balancer should line up with the TDC mark on the timing belt cover.

if it doesnt then your all on drugs

[BHDave]

yeah, that makes more sense.

though at the end of the day you can ignore the marks on the harmonic balancer as they are only there to help set the ignition timing and nothing else. Only the crank gear and the notch, and the cam gears and their marks on the back cover matter.

And the genuine nissan belt has marks as well incidentally. double fail safe.

[r33turb]

mmm, in that case all is lined up properly, and it all points to a faulty cas sensor

[shanef]

easy thing to do is set it to TDC before you start

radiator needs to come out too. also make sure u replace both idler & tensioner bolts

[r33turb]

all i need to do at this stage is check the cas sensor is not faulty, as mine was dropped, can i use an rb engine cas sensor?mine is a mitsubushi.

[BHDave]

All the early ones are mitsu units. dunno about the late ones

[r33turb]

Thanks, so any cas sensors from early models with the mitsi logo should work?iive been looking at a couple of pictures and they all seem to be exactly the same as mine....if it plugs in and keys in aswell is it safe to say its for my car, or should the cas sensor part no. match up....could i screw anything up if its the wrong sensor?

[Simon-S14]

nah you wont screw anything up, it will either work or it wont.

try and get one from the same model motor as yours tho, to make it easier.

[r33turb]

heres the part no for my cas: 23731 02U11

Further information regarding my issue, when the car starts...and everything is lined up, it feels like its about to turn over, and then the noise of air going through like vaccum to the intake, and it ends at my arc panel....its a wierd noise to explain....

whats this mean?, or could this relate to my cas being faulty in any way???

Edited January 27, 2008 by r33turb

[Simon-S14]

so your engine isnt acctually cranking over? but it feels like it wants to crank?

if this is the case check the battery?? might be flat

turn the motor over by hand wkith a socket and ratchet on the bottom pulley and see how it feels

[r33turb]

Hey, yeah its like it just needs that slight KICK to get going, its hard to explain, but then when the cas timing is right on, this wierd noise comes through the intake, like huge vacuum pressure going out the intake and through my afms - panel filter(where it seems to stop making the noise).

Ive cranked the engine by hand, and all seems ok.

I also lined up my timing marks at tdc, removed cyl 1 spark, and piston was right on TDC, so timing looks to be correct.

[Adriano]

If it hasnt started, how do you know if the cas timing is correct?

[nsta]

I have tried starting it via the key, and no luck, while adjusting the cas, and can nearly hear her kick over, and then a suddent noise comes from the intake like vacuum suction.....im going to try another cas today.