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Rb25Det Timing Ring Help

brockssracer
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brockssracer Rookie

brockssracer

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Posted

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.

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34GeeTeeTee Grand Master

34GeeTeeTee

Posted
Posted
  On 13/06/2013 at 5:02 AM, brockssracer said:

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 Rookie

brockssracer

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  • Author
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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.

bc6be080-b161-419e-a799-2806fd94feb6.jpg

89CAL Grand Master

89CAL

Posted
Posted

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 Rookie

brockssracer

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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.

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

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

brockssracer Rookie

brockssracer

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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 Grand Master

34GeeTeeTee

Posted
Posted

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 Grand Master

AngryRB

Posted
Posted (edited)

post-70965-0-94607800-1371212509_thumb.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?

Edited by AngryRBGTX
brockssracer Rookie

brockssracer

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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 Grand Master

Dose Pipe Sutututu

Posted
Posted
  On 14/06/2013 at 12:20 PM, AngryRBGTX said:

attachicon.gif20130224_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

Dose Pipe Sutututu Grand Master

Dose Pipe Sutututu

Posted
Posted

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 Grand Master

34GeeTeeTee

Posted
Posted
  On 18/06/2013 at 9:56 PM, johnnilicte said:

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...

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