Rb25Det Timing Ring Help

[brockssracer]

So on the r33 that I bought not to long ago a new fault has apeared. There is a ring that is fitted behing the harmonic balancer and this seems to work its way loose and rub on the timing belt cover. is this a common issue. is there something that wasnt put back on when it was taken off. What will I have to do to stop this from happening as when it starts making its noise it sounds like the engine is running with no oil in it.

[34GeeTeeTee]

So on the r33 that I bought not to long ago a new fault has apeared. There is a ring that is fitted behing the harmonic balancer and this seems to work its way loose and rub on the timing belt cover. is this a common issue. is there something that wasnt put back on when it was taken off. What will I have to do to stop this from happening as when it starts making its noise it sounds like the engine is running with no oil in it.

Have you got pics of what you are referring too? Sounds bad...

[brockssracer]

okies ill go and try get one now

[brockssracer]

So what seems to happen is after a few days of driving the ring seems to slide back on the shaft and start rubbing on the timing cover. To rectify this in the short term I just lever it back into the crankshaft pulley with a large screwdriver. Think that pic pretty much shows it.

[89CAL]

Harmonic balancer is probably done. That ring with the timing marks is part of thr balancer.

Unoess you mean the little silver washer that sits between the balancer and timing gear. But this cant rub on the timing case anyway

[brockssracer]

nah it is the timing ring. the balancer is tight, just that ring seems to be seperating. looks like its just another part that has to be replaced... now I know why they say never buy a mechanics car.... they can dodgy alot of shit that seems to go a month after owning it.

[brockssracer]

http://www.ebay.com.au/itm/Crank-Pulley-Nissan-Skyline-RB25DET-/130913088465?pt=AU_Car_Parts_Accessories&hash=item1e7b0733d1

is that a suitable replacement?

[89CAL]

The ring is part of the balancer. You need a new balancer. For whatever reason you disagree then ask if a dodgy balancer on ebay is any good

Get a new genuine one or a ross balancer etc

[Dose Pipe Sutututu]

you mean the front backing plate that sits between the balancer & the cam sprocket?

You can buy them here:

http://www.kudosmotorsports.com/catalog/nissan-crankshaft-sprocket-kit-genuine-nissan-rb20et-rb20det-rb25det-rb30et-p-1197.html

Don't use those homo looking harmonic balancers, great way to smash a motor. Use a genuine one or a Ross Metal Jacket

[GTSBoy]

Well, to call it a harmonic balancer is flattery anyway. Nothing more than a pulley.

[brockssracer]

ok so I have had a setback and progress.... I managed to find someone local to get a balancer off. Got it back home and the mechanic said there are hairilne cracks in the rubber so not to use it....$50 down the drain... come with a powersteering pump though cause he threw that in so I might be able to sell that to get some money back. Went and bought a removal tool as I didnt want to use a bearing puller like most people do and destroy the rings and set to stripping down to get to it. Back to the store to get some longer bolts. M6 x 1.0 x 70mm are the best to use.

Done some ringing around after pulling mine off and identifying that the bonding of the rubber between the timing ring and the main assembly has faid. $180 from a local nissan wrecker for a second hand part... not sure on whether this would be wise to get another 20 yr old part. New balancers priced from $480-580. Then I found a company in sydney that specialises in reconditioning balancers. They strip them down and rebuild them. Incl freight from bris to wagga wagga and back again it should only set me back approx $300, which is better on both sides as at least I know it will be a like new part but for alot less. Now just have to wait a week or so to get it back. well time to take a few things off around the engine bay, paint and refit.

[34GeeTeeTee]

Yep they are a pretty pricey bit of gear

Mine failed so i replaced it with a Ross Metal Jacket which cost me a fortune, only to find out someone had a brand new Nissan one for sale online here at SAU for half the price Ah well!

Ross got the thing made overnight which was pretty damn impressive!

[AngryRB]

I'm a bit confused as to how this goes together, does the plate get pressed onto the sprocket by the harmonic balancer or is it supposed to sit on this little half moon?

Edited June 14, 2013 by AngryRBGTX

[89CAL]

The plate just slips over and sits there. I think once the balancer is on it will stay in one place

[GTSBoy]

Can that keyway be pushed backeards at all?

[brockssracer]

ok. The keyway is just a small piece of metal like a half moon. It is removeable but not able to have its position changed. The harmonic balancer has a key hole in it so it can only go on the crankshaft the one way. I have another one here that I was unable to use that I will take a picture of and post on here shortly. Plus I will take a pic of that same washer that sits on the crankshaft coverint the timing belt pulley.

[Dose Pipe Sutututu]

20130224_104328 (640x480).jpgI'm a bit confused as to how this goes together, does the plate get pressed onto the sprocket by the harmonic balancer or is it supposed to sit on this little half moon?

yep, you're 100% correct.. also don't get the plate on backwards, will destroy your belt

[AngryRB]

is the R34 harmonic balancer any different from the R33? seems to be cheaper...

Edited June 18, 2013 by AngryRBGTX

[Dose Pipe Sutututu]

r34 uses different drive belts.

It could fit, don't quote me on that.

Have you had a look at Ross Nexus balancers? They're about 450$ New, cheaper than an OEM one. Or just bite the bullet and go metal jacket for 650$.

[34GeeTeeTee]

r34 uses different drive belts.

It could fit, don't quote me on that.

Have you had a look at Ross Nexus balancers? They're about 450$ New, cheaper than an OEM one. Or just bite the bullet and go metal jacket for 650$.

Pretty sure mine was different to a 33 as Ross had to change mine around...