Date: Fri, 12 Nov 2004 16:28:30 GMT From: Dexter J <lamealameadingdongnospamlamelame.org> Subject: Re: changing Timing chain and balance chain
Salutations: On Fri, 12 Nov 2004 10:03:13 -0500, Fred W <Fred.Willsnospammyrealbox.com> wrote: > Dexter J wrote: >> Salutations: >> >> On Thu, 11 Nov 2004 21:49:45 GMT, Dave <davetempnospamueyonder.co.uk> >> wrote: >> >>> My Mreg 1995 NG900 has done 140000. Recently the enging has developed >>> loud >>> rattle that quietens when warm. >>> I have been advised it could be timing and or balance shaft chains. Do >>> these >>> need the engine to be taken out to replace or can they be bone in car? >>> Thanks dave >>> >> >> There are rumours that it can be done in the car - but you probably >> want to pull the engine and do the gaskets, seals, pumps and re-brush >> the alternator anyway at 140,000. >> >> My take would be that it is going to run about the same shop hours to >> do the chains in the car as pulling and benching the engine - but you >> can address anything else you find along the way on the bench. >> > > I have done the chains in the car on a 9000 but (not a 900) and it was > not very difficult. It requires moving the AC compressor, and removing > the water pump, but it was far easier to do with the engine in the car > than the effort to remove it. > > On a 9000 you remove the inner fender liner and it gives you good access > through the wheel well. I do not recall if that is how a NG900 is as > well. > > -Fred W Hey Fred, good to read you again. Sadly, the NG900 is a just tight enough fit that while you can remove all the peripherals and the chain case - you can't easily withdraw the balance shafts replace the cogs (which most likely are what wore out the chain prematurely - which then leads you to review the oil pick-up and gallery for sludging) without unbolting the engine from the mounts and the complete facing suspension and hub assembly from the upper shock mount and inner CV joint out. Basically you have to shift the motor around in the bay a couple of times to get at things - and that isn't for the faint of heart with old lines and delicate harnesses. I figure it's six or one half dozen of the other hours wise - but only if all you have to fix in the chain case is the actual chains, which is rarely the case. Interestingly, none of the actual parts in the chain case or oil gallery are all that expensive - but the hours to do the complete job either way are at least 10. So, my suggestion is based in the premise that it is just as easy to pull a whole front wheel drive power, tranny and all, out and bench it. Simply unbolt the mounts and systems and lift. There is probably equally qualified opinion that it is better not to disturb the harness, vacuum and hydraulic systems and try to fix it in the car. Which is OK too I guess, as long as everything else besides the actual chains are in good working order. But - if I'm faced with at least 10 shop hours either way - I figure it's a good value to have a 140,000 mile engine clear of the car so that anything needing attention can be done easily and relatively cheaply all at once. It allows for the more value for hours at the end of the day I think. I'm back to a 9000 now myself as you may remember - a '93 5 speed aero in fact - but I must say that the NG900 isn't nearly as bad as I had feared. We still have the NG900 we picked up last winter as I haven't be able to find a local buyer for it yet. Our '94 S model is *VERY* sporty unit all things considered - and really quite reliable with an LH Bosch ignition system too. Assuming the body on this '95 is good shape - it is worth the effort to fix the systems properly as the owner will likely get another 140,000 out it before anything serious goes wrong in the engine bay. Check over the tranny before you proceed however, 1994 and onward are good years - but trouble there could tip the scales the other way *long term owner value wise* of course. -- Radio Free Dexterdyne Top Tune o'be-do-da-day Tim Tamashiro - All I do is Dream of You http://www.dexterdyne.org/888/155.RAM all tunes - no cookies no subscription no weather no ads no news no phone in - RealAudio 8+ Required - all the Time
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