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Don't worry too much about using the car in the short term, the chains will get incredibly noisy and this will go on for a long time before they fail, but if its getting louder now in such a short period of time, 1. your listing to it too much, and 2. its time to think about replacing them...

I sent mine off to another branch for a second opinion, they reported back as "no abnormal noise found" I disagree with that statement but they don't seem worried by it, i don't believe the oil pump would whine as it's shell bearings so must simply be the result of a tighter chain on the...

Right, have done endless diagnostics into this whining, chain and everything is fine, have located the noise as coming from the oil pump, I suspect the new tight chain makes it go noisy so next step is to remove and strip the pump for inspection

It's probably just as bad to under rev during the first part of the trip, heavy loads on the bottom end with thick oil, I just keep it sensible while it warms. Have never heard of bearing failure from low rpm driving to be fair haha.

I had a probe about with a stethoscope and no noise from the pump so scrap that idea, timing chain sounded fine but was all from bottom pump chain, it hurt my ears! The new chain I fitted was a lot tighter than the old one so I'm certain it's all down to this different tensioner.

An update of sorts... I have just finished another chain replacement on an N22a2 engine, new bottom sprockets, chains, guides and tensioners, everything fitted correctly and I can confirm it is also whining loudly. This leaves me relived yet confused haha.

I believe the new tensioners are not supposed to be as strong, I could push the new tensioners in with my finger where as the old ones was a struggle, if the chain were loose it would clatter or rattle which is why I think the whine sounds like its due to being to tight but I changed my timing...

Might have diagnosed the problem, need to confirm for sure with a stethoscope but suspect it's the vacuum pump which is driven by the chain, the new tighter chain might have caused the bearings to go noisy, weird the noise was instant after the new chain, would expect it to take time to go...

That's a good theory, I will inspect it soon and report back, it's a shame it's the pump chain causing the noise as there is no easy access like the timing chain.

Yea hopefully it will be ok, might even quieten down over time, all I know is in 780 miles mine has got a bit louder and "grindy" can also hear the links of the chain clicking with the whine.

I don't like that rattle but most ctdi engines do it to some extent so it doesn't worry me as much as the whine, the fact it rattles a lot, and the chain is new is disturbing but as it's not a noise that's unusual I can live with it. As for the whine, I'm stumped, honda technical say it's...

I wouldn't like to do this job without a ramp but it's doable... I was going to do a diy guide but forgot to take the photos haha

https://www.youtube.com/watch?v=SSOFFydM1as&feature=youtube_gdata_player Here is a video clip of mine, the engine drowned out most of the rattling as I held it a bit close but you can hear the whine. Would like to hear yours if you can get a clip up?

Yea i have used several febi chains on non honda and never had a problem, certainly don't think that's causing the whine anyway

I used all Genuine honda parts, never heard one like this before other than a few people on these forums with similar or the same noise.

I have already swapped back to my old tensioner, made no difference but i haven't changed the pump tensioner as the sump needs to come off so not got that far yet. I'm confident the noise is not down to your original sprockets, it's good practice to replace them but I have swapped chains on...

I agree, always let the pressure build for 10 seconds, then allow the oil to heat and thin a bit before booting it. Cooling is vital, I take it easy for that last 5 mins then let it idle for a few seconds, if you have been pushing it and not taken it easy for the last part just idle...

I replaced all sprockets, both chains both tensioners and pump chain guides, didn't change timing chain guides, only did pump guides as I had spare guides in my tool box. The tensioners I received were slightly different so I swapped my timing chain tensioner back to the old one.... No...

As per my other post I have the exact same problem with whining, no change in engine dynamics what so ever, I'm a honda technician and did the job my self so am happy with the repair, just not this whine. I do also get a light rattle or "chainy ticking" when I decelerate, they all do...

I should add to that I didn't mean chair, I mean chain :-D