Ajax

yes.

dillsrotary

I have to disagree with royal purple maxgear not being the cause....

https://www.rx8club.com/series-i-trouble-shooting-95/trans-grind-after-royal-purple-ordered-redline-shockproof-120874/

You can argue that everyone uses RP and it's merely the tranny, but i have yet to see a trans replaced thread and the owner used a heavier Redline oil. Logic points towards the royal purple being way to light of an oil.

cheeto

k. should i take off my midpipe and put in my rear seats before i go?

turborx8

iTrader: (1)

Hell yeah!

At the very least get them to document the problem.

nycgps

iTrader: (1)

I've been using RP Oil Since 5K miles. Stock shifter.

Starting about 4-5 months ago, when I was at around hmm maybe 36K miles. I got this *BOV* kind of noise when I try to shift, its happening whenever Im faster than 30 mph.

At first I thought it was the Throwout bearing giving up.

then about 3 weeks ago, I drop the tranny, ACT HD Clutch & Disc out, new stock clutch back in, new fiction plate for Fidanza flywheel, new throwout bearing, new front and rear tranny seals. new bolts for everything , new RP Maxgear oil. Still getting the same noise.

Tomorrow I will jack my car up, replace all 4 wheels to Summer set, then gonna drain and flush the Tranny fluid to MT-90. Just to See what happens.

I am on Stock shifter, btw.

cheeto

ok, should i take off my midpipe and put back in my rear seats?

daisuke

I don't have any tranny problems, but i have learned to be very mindful of how I change gears.

After doing a few 1st-2nd-5th accelerations I have noticed that if you try and shift after leaving 2nd at high rpms it's very hard to get into 5th gear and you have to wait for revs to die down before it'll even go in, the synchros on the tranny apear to be pretty weak and I'd advise everyone no matter what shifter you have to be gentle on the tranny, the engine can take the punishment, but I doubt the gearbox is up to it.

The tranny is very loud no matter how many miles are on it, so I don't think noise is a symptom unless it's grinding badly.

nycgps

iTrader: (1)

We should get Aisin or Mazda to come here to say a few words ~

kristopher_d

1) I think there may be a tranny option on the way shortly.
2) Some folks are claiming the issue is not gears, or necessarily even synchros directly, but a lack of positive stops in the transmission allowing us to basically shift too-far into gear, causing deflection and excess wear. Obviously 2nd gear, for LHD cars, is the easiest to apply to much force to, with 4 the being the next easiest. Since these are the gears with the most synchro issue, I'm leaning toward this explanation.

Ajax

5th/6th/reverse gear only have a single cone synchromesh gear.
1-2 and 3-4 have triple rings (triple cone synchcros).

expo1

Just would like to note My trans has 118,000 miles with no issues.
100,000 of the miles are with Red Line fluid
The last 47,000 with a AFE shifter.

cheeto

anyone?

turborx8

iTrader: (1)

Rear seats will not affect warrantee but the midpipe would.

dynamho

That has been my prior experience with an aftermarket short shifter also on my other car (2002 Protege). Initially, shifts felt crisp, then the shifting experience deteriorated to the point of not being able to correctly cog the gears. I switched back to stock and it hasn't deteriorated any further.

I'd like to think this furthers the point that it's very difficult for us to predict long term effects of any mod "in vitro" in the same way that OEM manufacturers have discovered through months/years of development.

nycgps

iTrader: (1)

Kinda curious, u use MT-90 all the way? or mix it with MTL like some ppl here

Im going to change it to Pure MT-90 tomorrow morning myself. plus swapping all wheels.

How does it feel? ppl said MT-90 shifts like crap.

cheeto

but why would my midpipe affect the warranty on my trans?

turborx8

iTrader: (1)

It won't but they may document that you have a midpipe and they might give you trouble if you have engine issues in the future.

cheeto

true. its just a pita to swap them out

G3tR3DDY2GR3DDY

iTrader: (8)

i would not worry about the midpipe... i would worry about the oil in it though. I just put RP in mine about 500 miles ago and am starting to get a nice grind in 2nd and 4th as well... kinda worried they will say its general wear and not covered or that when i changed the fluid i voided the warranty or some bullshit. I dont wanna take it in knowing its something wrong with the tranny then be forced to pay for a new one to get my car back... my warranty ends this month BTW.

cheeto

well as far as i know, no one has changed the oil in the tranny except for the dealer.

expo1

MT-90 all the way.

staticlag

Its not the cause, the only reason why it started grinding with royal purple was because your tranny was already bad to begin with. The super heavy redline you are using is just a band-aid.

huzer21

iTrader: (1)

Must be nice to get the dealer to work on your tranny for this problem. I've had it in 3 times and have been told 3 different things, but not one of them will address the transmission. I would like to see if it's the clutch pedal bracket that CRH mentions, or an actual transmission problem. I put the RP shifter on it about a month after I bought the car. I've swapped it out with stock, and put the RP back on. 2nd gear grinds no matter which shifter is in the car. I've been slow and deliberate with shifts just to test if it was a technique problem, and no matter what, it grinds at higher RPMs. And it's ONLY second gear (regardless of upshifts, or downshifts). I installed it with 32,000 miles on the car, and have 37000 on it now after 6 months.

cheeto

see mine only grinds when i shift into second from first when the tranny is cold and at low rpms. the rest of the gears are fine.

turborx8

iTrader: (1)

I replaced my royal purple maxgear with red line mt-90 and now my 2nd gear grind is even worse!