Transmission Rebuild (Syncro issue)
#1
Transmission Rebuild (Syncro issue)
Anyone done a transmission rebuild on the 8?
I just purchased an 05' 6spd 6 days ago. It has 35,000 miles and suffers from a slight bump (when warm) as it goes into 2nd. When it's cold and you are rolling you can almost forget about 2nd gear until it has had time to warm up. I also have a rough time getting reverse to happen when it is warm (shifts in like butter when it is cold)...
The dealer has her all warmed up and ready to go when I tested the car. I had driven about 4 hours to see it so letting it sit over night to cool off and driving it at dawn wasn't really on my mind.
I assume that syncros are a common issue with the 8's since they shift around at 9k rpm sometimes so I'm just curious how most have gone about deling with this issue.
Thanks to all
~Thomas
I just purchased an 05' 6spd 6 days ago. It has 35,000 miles and suffers from a slight bump (when warm) as it goes into 2nd. When it's cold and you are rolling you can almost forget about 2nd gear until it has had time to warm up. I also have a rough time getting reverse to happen when it is warm (shifts in like butter when it is cold)...
The dealer has her all warmed up and ready to go when I tested the car. I had driven about 4 hours to see it so letting it sit over night to cool off and driving it at dawn wasn't really on my mind.
I assume that syncros are a common issue with the 8's since they shift around at 9k rpm sometimes so I'm just curious how most have gone about deling with this issue.
Thanks to all
~Thomas
#2
Trained true Killers
I seem to be facing a syncro issue as well my only problem happens when my car is warmed up 4th gear gets a little sticky above 5-6grand I not to worried yet, but this all started affter I changed my tranny fluid to Royal Purple I am thinking about going back to OME tranny fluid to see if that helps.
#3
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Requires special tools such as trans gear pullers and a press, stuff most people don't have
there's a separate 6 spd trans service manual, it will show you everything
get that RP fluid out of there, most people have problems with it, try Redline MT90
there's a separate 6 spd trans service manual, it will show you everything
get that RP fluid out of there, most people have problems with it, try Redline MT90
Last edited by TeamRX8; 02-26-2010 at 09:08 AM.
#4
how much cost change syncros?
i have the same problem... over 8k rpm i cant pass from second to third gear easily
in cold, the first gear and second is likely imposible without pull it with strength
i have the car in the extension of warranty (4th year of 5) and i dont know if it possible to get a complete transmission change
i have the same problem... over 8k rpm i cant pass from second to third gear easily
in cold, the first gear and second is likely imposible without pull it with strength
i have the car in the extension of warranty (4th year of 5) and i dont know if it possible to get a complete transmission change
#5
'06 copper red shinka #66
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i would think if you guys are 35k/ under warranty the dealer should take care of this.
if you are not covered, i wouldnt recommend doing the rebuild unless you have a place/tools/time and have experience rebuilding trannies. it's somewhat of an art.
for what it's worth, they sell the complete tranny rebuilt here: http://www.mazdatrix.com/8-trans.htm
i know jasper does rebuilt transmissions as well, it might even be cheaper
mazdamatrix also has some of the parts and tools on your page to do it yourself
they can probably get whatever parts you need
if you are not covered, i wouldnt recommend doing the rebuild unless you have a place/tools/time and have experience rebuilding trannies. it's somewhat of an art.
for what it's worth, they sell the complete tranny rebuilt here: http://www.mazdatrix.com/8-trans.htm
i know jasper does rebuilt transmissions as well, it might even be cheaper
mazdamatrix also has some of the parts and tools on your page to do it yourself
they can probably get whatever parts you need
#6
the cost to replace each syncro aint easy if u dont know what ur doing, mine went bad and after doing the math , i ended with a great deal on a 08 tranny with 17,000 miles on it for $500, i saw them ******* take it out cause i sure was gonna get pissed if they sold me the other tranny jejejee, but i'm sure you can get a great deal on a used tranny with low mileage, from the looks of it i can say the previous owner nailed and floored that car like if it was stolen by the tranny only having 35k on it... pm me if your looking for a good used tranny i can refer you to the same place i got mines Pam's Auto :-)
#7
yes i agree get that rp out of there its royal purple garbage..i put it in my trans and rear gear..biggest mistake..stunk terrible cost me about 80 bux and i took it out a week later when i took it out there were shavings on the drain plug..put the redline MT 90 in it and still get a little grind every once in awhile..whats the stock fluid they run through the rx8 trans and rear ends.. it may be the best bet.. it shifted great when i had the stock stuff in it this new synethic stuff sucks..i called and complained to royal purple and they told me most drift guys in the 8's actually run engine oil in there trans..
#8
Zoom-Freakin'-Zoom
iTrader: (5)
yes i agree get that rp out of there its royal purple garbage..i put it in my trans and rear gear..biggest mistake..stunk terrible cost me about 80 bux and i took it out a week later when i took it out there were shavings on the drain plug..put the redline MT 90 in it and still get a little grind every once in awhile..whats the stock fluid they run through the rx8 trans and rear ends.. it may be the best bet.. it shifted great when i had the stock stuff in it this new synethic stuff sucks..i called and complained to royal purple and they told me most drift guys in the 8's actually run engine oil in there trans..
really.
have run it in both housings.. for more that the mileage you mention, no issues let me know how that plays out with your findings..
before you post someting more stupid than you have posted..
120k miles..
oil. in lots of places. and lots of types
beers
![Beer](https://www.rx8club.com/images/smilies/beer.gif)
#9
Zoom-Freakin'-Zoom
iTrader: (5)
how much cost change syncros?
i have the same problem... over 8k rpm i cant pass from second to third gear easily
in cold, the first gear and second is likely imposible without pull it with strength
i have the car in the extension of warranty (4th year of 5) and i dont know if it possible to get a complete transmission change
i have the same problem... over 8k rpm i cant pass from second to third gear easily
in cold, the first gear and second is likely imposible without pull it with strength
i have the car in the extension of warranty (4th year of 5) and i dont know if it possible to get a complete transmission change
wondering.
are you in?
well stanford fla?
beers
![Beer](https://www.rx8club.com/images/smilies/beer.gif)
#13
Well, Royal Purple MaxGear is what I used once. Horrible fourth gear grind, had to shift below 5k when going to 4. But I soon changed it out to BG SyncroShift II (https://secure.buschurracing.com/cat...roducts_id=825).
When I did my clutch, this BG sh*t was so valuable to me that I drained it into a bowl, placed it in the fridge, yeah I know..., and reused it topping off with some Pennzoil Synchromesh - but just a little of it.
Anyway, I'm still using this BG fluid and I consistently redline at 94 miles per hour (my 3rd gear cut off speed) on the freeway every day back from work. And no grind at all, though I always have this hidden feeling that I'll get a grind, but it never happens!
I recommend BG SynchroShift II.
But whatever you use, yes, please get Royal Purple Max Gear out of your car.
When I did my clutch, this BG sh*t was so valuable to me that I drained it into a bowl, placed it in the fridge, yeah I know..., and reused it topping off with some Pennzoil Synchromesh - but just a little of it.
Anyway, I'm still using this BG fluid and I consistently redline at 94 miles per hour (my 3rd gear cut off speed) on the freeway every day back from work. And no grind at all, though I always have this hidden feeling that I'll get a grind, but it never happens!
I recommend BG SynchroShift II.
But whatever you use, yes, please get Royal Purple Max Gear out of your car.
#14
I was qouted about $4200 maybe but he say he may can get it down lower to about $2000 or less depnding how much parts cost for haveing bad bearing and forks and etc.. Right now with my engine being built I just can't see paying for a transmission rebuild that's over $1000 right now. I can trust my engine builder but a trasmission that's has protential problem idk
#15
RX8 RX8!
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Tore down the transmission and synchros were shot and forks were bent. Was quoted $2k to have transmission rebuilt. Decided to buy a brand new 2009 transmission for $1,800 and then add $1,200 for labor.
#16
also i couldnt see spending $2k either for a transmission especailly when u do have any performance upgrades to it
#19
Does the '09 gearbox go straight into the previous gen cars? If so, this is the way to go as it is a far improved box.
The dealer just called today to let me know that the regional manager has authorized a replacement gearbox for my '06.
I'm going to do the clutch at the same time just to eliminate that as a potential issue.
The dealer just called today to let me know that the regional manager has authorized a replacement gearbox for my '06.
I'm going to do the clutch at the same time just to eliminate that as a potential issue.
#20
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a while after i had the rp in my tranny it started to grinding into 4th and 5th gear but now the 2nd is the worst one
i will change the oil in my tranny hoping that it get better
i will change the oil in my tranny hoping that it get better
#21
New gearbox (not rebuilt) is in the car along with a new factory clutch setup....and you know what? The thing still shifts like it has no synchros. I'm going to put some more miles on it, then put in some Redline Ultra Lightweight Shockproof gear lube, and see if it helps.
I put the stuff in my F355 transaxle, and the results were nothing short of miraculous. Seriously, it was a complete night and day change. I'm hoping for the same with the RX8.
I put the stuff in my F355 transaxle, and the results were nothing short of miraculous. Seriously, it was a complete night and day change. I'm hoping for the same with the RX8.
#22
Help!!! i changed my transmission fluid and dif fluid with royal purple 75-90w and had no initial problem...Drove 1000 miles to new orleans and 200 miles b4 i got here the transmission started to catch between 3rd and 4th...just courious if its the clutch bracket or the royal purple fluid...should i change back to factory fluid or try the bg syncro shift fluid?
#24
Stuck in a love triangle
I haven't been able to downshift into 2nd without double clutching for a while now...but I barely do anymore highway driving so I don't mind. Maybe one of these days I'll get it fixed