On Feb 26, 9:40 pm, David Geesaman <dgeesamanNOS...@[EMAIL PROTECTED]
>
wrote:
> codifus wrote:
> > On Feb 25, 7:33 pm, David Geesaman <dgeesamanNOS...@[EMAIL PROTECTED]
>
> > wrote:
> >> Tom Yakulis wrote:
> >>> Hi all,
> >>> I drive a '99 Se 5speed that just hit 120K miles. I was wondering
what parts
> >>> typically fail and should be replaced around this mileage.
> >>> Thanks
> >> First, do the 60k maintenance again:
> >> - drain/replace coolant
> >> - new belts
> >> - new OEM platinum plugs
> >> - new fuel filter
> >> - replace gear oil (use Amsoil MTG or Redline MT-90 - both are
synthetic
> >> GL-4 75w-90 oils)
>
> >> Definitely get your transmission inspected. The 4th gen 5 speeds are
> >> notorious for having problems with differential carrier bearing wear.
A
> >> tranny shop can find it pretty quickly (they just grab the driver
side
> >> axle end and see if the diff moves within the tranny housing).
Nissan's
> >> original transmission assembly did not ****m most of these trannys
> >> properly, and depending on how badly the bearings were set is how
long
> >> the transmission will last. If your bearings are wearing too fast
you
> >> want to catch it early, take it to a manual transmission specialist,
and
> >> have them re-****m the diff during the rebuild. If you procrastinate
the
> >> gears/shafts will run misaligned and develop uneven wear and you'll
> >> stand much greater risk of sudden failure. I say all this about the
5
> >> speed trannys because I've rebuild over a dozen of them and there are
> >> more every day.
>
> >> There are other things like oil seals and valve cover gaskets that
can
> >> develop minor oil leaks. Just keep an eye out for that - many
maximas
> >> go a much longer time than 120k without these leaks and since the
leaks
> >> are generally harmless there is no need IMHO to get preventive about
it.
>
> >> Dave
>
> > I've experienced this 1st hand in my 98 5-speed. The tranny didn't
> > fail, just got incredibly noisy. When I replaced the clutch at 140K
> > miles, I also replaced the differential bearings and all was good.
>
> > Was the issue fixed in the 2000 thru 2001 5-speed manual trannies? I
> > remember the Nissan brochure boasting stronger gears in the manual
> > tranny compared to the 99s and below.
>
> > CD
>
> I only know of one difference between the 95-99 gears and the 00-01 5
> speed gears: slightly modified oil grooving. Perhaps they improved the
> material a little bit, I dunno. The shafts are definitely the same. I
> haven't rebuilt enough of the 00-01's to determine if they were built
> properly, but the couple I've done were correct.
>
> One well-regarded internet source found that when he redid his diff
> bearings that he needed a different set of bearing ****ms. Assuming his
> housings hadn't warped, his postulation that the factory set endplay
> wrong is a valid one.
>
> But I think it goes beyond that. My experience rebuilding 95-99 5
> speeds has resulted in a large pile of diff bearing ****ms in just 3
> sizes. I've never found any other ****m size in a stock tranny, although
> when I rebuild them the ****m sizes I use end up all over the tolerance
> range. (There are over a dozen ****m sizes). My hypothesis, which will
> never be known for sure, is that the original tranny builders did not
> have the full range of ****m sizes onhand to accurately set the diff
> bearing endplay. So if you were lucky your tranny required the ****m
> sizes that were on hand. If you were unlucky your tranny needed a much
> different ****m size and it left the factory with incorrect endplay
> setting, doomed to die a premature death. Some trannys died within the
> factory warranty, but most lasted just long enough to die out of
> warranty and within the car's typical life.
>
> Most rebuilders will just re-use the ****ms and not remeasure. They
> aren't aware of this endplay setting problem, because most trannys are
> built right in the first place. Most customers don't want to wait the
> extra days to get the correct ****m size from Nissan, and it will easily
> outlast the 6 month or 12 month rebuilders warranty. I always measure
> until I'm confident I have the endplay within .001", and use the exact
> recommended ****m size. To avoid delays I keep almost every ****m size on
> hand. (this is only viable because I rebuild 95-01 trannys almost
> exclusively)
>
> Dave
Thanks for the detailed response. If I ever get back into cars again
like I used to be, I may build me what I would term the best Maxima.
I would start with the 97-99 body, it's the best size, not too big,
not too small, and still the most attractive. Then I'd put the VQ30DE-
K from the 2000-2001 Maxima in it. The 3.0 Is still the smoothest V6,
and the 2000-2001 Maximas got the most highly developed VQ30. Last,
I'd get the 2000-2001 5 speed. I want a rod ****fting mechanism, not
the cable ****fting vagueness in the newer 6 speeds. I think that part
of the reason that Nissan went to a cable ****fter is to hide some of
the harshness of the 3.5s. I know that some Maxima.org people have put
3.5s in their 4th gens. Those must be freaking monsters. But in the
long term I would think that the car is not as smooth as before and
gets worse gas mileage. Anyhow, I don't really desire a 13 second 4
door s****ts car. It would be nice, but not essential, just reasonable
fast, and smooth.
Or maybe I'll just buy a G35 S 6-speed:)
Just my 2 cents.
CD
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