So what about the threshold for AT's? I'm pushing about 300whp/225wtq with a trans cooler atm, has anyone blown them up yet?

Where did you find transmissions for 500? I'm going to need one. Fourth gear is a problem and second and fifth are becoming worse every time I drive

Damn. So I'm guessing you guys experience these failures while at the track or in some other scenario where you're shifting near red line right?

In other words, if I plan on mostly casual driving and just going to the track once in a while, my transmission should last longer?

How are you needing a gearbox when you're not even turbo?

Wonder if these guys are blowing transmissions?

[ame="https://www.youtube.com/watch?v=olBxhM_Z70I"]伝説のチューニング86/BRZレースRd.2 part2 The legendary tuning 86/BRZ race - YouTube[/ame]

Bad Synchros like everyone else. Dealership is being PITA.

My car has yet to see a track. Im tuned on E85 is all, no header yet, but ive had synchro problems before the tune.

http://www.ft86club.com/forums/showp...40&postcount=5

I don't think all these guys are running into gearbox issues...

[ame="https://www.youtube.com/watch?v=iM-HPZvbdtY"]織戸16台抜き!!GAZOO Racing 86/BRZ Race vol.2 in Fujispeedway - YouTube[/ame]

Not everyone has this issue, just like not everyone has crickets, or the rear deck lid rattle, or condensation in the tail lights. That said it is a relatively common occurrence. I just don't have the power to shear a gear completely, although I kind of wish I did haha.

I think we also have to keep in mind that this isn't an A80, the powerplant isn't a 2JZ, and it doesn't have a Getrag V160 gearbox. I think being able to handle doubling the wtq output through the transmission is impressive. The engine being even more impressive, in Reaper's case, being able to push 460whp (~300whp increase) through the FA20 on stock internals.

All that said, I too have both crickets and crappy synchros. The latter being the scariest and the most inexcusable, imho.

We just have to remember that this isn't a 3400lb beast. This isn't the successor to the Supra. It came with only 200bhp/165whp because it wasn't created to be the next highway king; it was made to be an affordable little sports car that takes corners like a dream.

I think, especially using Reaper as an example, this platform is exactly what I was looking for... If the synchros issue can be fixed (be it aftermarket or warranty), then I think I should be able to safely push 350-400whp with about 250-300wtq. I'd say that's pretty good for this little car, especially running on stock internals.

Thoughts?

@Reaper isn't having problems with syncros. He's fragging gearsets through brute force. (torque) He's definitely found the design limit.

That looks like mad fun!

Yaaay!! We need more of that. Fun fun fun!

Almost completely agree, but for the benefit on the forum... "The window for error is very small" so it will be easier to blow the engine with minimal tune error.
If it was gigantic it should work perfect with every tune :respekt:

Just a thought here, comparing power number is meaningless as soon as those numbers don't come from the same Dyno, and if you don't have the stock curve. Its like comparing apples and oranges ...

Maybe that 450 hp one would read about the same as the 250 other one, on the same dyno, maybe the difference in the reality is much thinner than the number would suggest.

The engine, can take a lot, the internals ... sadly not so much, specifically the bearings.
The oiling is also an issue and can lead to major troubles.

Again comparing numbers from various tunes isn't necessarily the best read of what the engine can take, analyzing the failures is a much more pragmatic approach to determine where are the limits

:)

Sorry, I didn't mean to suggest that. I was simply saying, because he's found the design limit, the only major issue on my end that I need to figure out is the Synchros.

I agree completely.

As you mentioned HaDDeS, among others, the oil pressure is another major issue (which I meant to address in my post, but I think it got lost whenever my session timed out and I had to rewrite my post :thumbdown: ). I've heard the rods are another weak spot, but I'm not sure.

I'm really curious how long Reaper's will last, since it's been running that kind of power. I'm somewhat intrigued that his has lasted this long. When it fails, I'm especially curious to see what failed and why.

No apologies. The error was in my interpretation. Makes perfect sense now. :D


Ditto.

Easy, a car that pushes 400whp goes behind the FRS and drives to push it. Duh!! Joke ;D




What is N/A? What is IHE?


The maximum the FA20 can go it 400.83 whp

:burnrubber:

N/A = [ame="http://en.wikipedia.org/wiki/Naturally_aspirated_engine"]Naturally aspirated engine - Wikipedia, the free encyclopedia[/ame] (say refer to it as "Normally Aspirated"); Just means no forced induction (turbos/superchargers/etc)
IHE = Intake / Headers / Exhaust; The three most common bolt-on N/A upgrades

Oh yes, I understand =p. I am still new to the acronyms. Thank you so much :D

What does a turbo have to do with needing a gearbox? I've replaced a few in stock cars.

I've gone through two sets of syncros and one gearset.

Spinning 4th gear and fuel starving in long high G corners doesn't lie. Neither does the 18,000 miles on my odometer.

Whoops. I thought you fragged 4th in all 3 of your transmissions.

Are you rebuilding them yourself?

That would be one hell of a hobby...in which case i dont think so, otherwise after the second failure he would probably take so many selfies with them and post them here with suggestions on why they're breaking so much and where.

The Stock capacity of the FA20 is 1998CC or more commonly known as 2.0L

Your level of sarcasm is too advanced for this forum.:sigh:

lol :slap:

I can't get the parts to rebuild them. But I've inspected every failure and I've sent off a few pieces to "transmission specialists" but so far no help from the GTR/honda sequential/drag race/ lexus community except for a tremec tko swap proven by a supra drag race guy who didn't want to waste a v160 on this inexpensive of a car. That's the only answer that's somewhat affordable.

I found a guy that would make me custom carbon syncros but he wanted more money than what a new transmission costs. And if it worked it probably just shear 4th and wreck everything in there. I also have a contact with a shop that does sequential conversions for stis and Hondas but he wanted 6k and couldn't say if it would be stronger nor not. 6k is more than a tremec swap and 75% of the way into a v160swap.
And before someone says it the r154 does not fit in the tunnel and neither does the Nissan z transmission.

Any success/improvement in longevity in running a transmission fluid cooler? Thats the most affordable solution I can think of.

Is anyone making stronger gearsets for the 6sp? I only see the Cusco close-ratio, which only changes 1st and 2nd.

I have a set being built. Along with a bunch of other fixes for weak spots and poor high rpm shifting. I'd like to think I'll be testing it by summer, but there is really no timeframe on when it'll be ready for me to install

So no real availability then. Ah well. I have an extra transmission laying around and thought I'd look into having it built. Ah well. It's no rush for me. I'm only on a Sprintex 210.

Once I get to beat on it for a little and we make sure it's all good it will be marketed. I'll be testing it at 600whp with mickey Thompson et street radials

I hope that's a joke

And that's brings me so many unpleasant memories of my 4G63 (talon AWD). Apparently that gear box(es) we're made out of cheese...
Ufff it's all coming back! The heat soak, the timing belt, fry clutch and the easy fading brakes.
Man that was mechanic 101 to 3560.
Now I'm trying to avoid that rout with the FA20, so ALL fluid should be cool at all times (peace of mind) and AT (no easy clutch upgrade) (BTW that was the fuse that was remove and after that trany start to fall like flys) in the AWD Talon... A good combination was a heavy duty pressure plate with the OEM disc (good because last longer than stoke and didn't break trany as easy)...
Outstanding setup? Didn't find it :(
Just move on.


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Of course it is. everyone knows it's 400.84 whp. C'mon :thumbsup:

@Reaper, have you buy chance fitted an STi 6 spd yet? Assuming that'd be more cost effective than a TKO or T56 or super magnum and definitely a V160.

Yes you'd need a rwd converted one, but would that tack on a lot of cost? Iat just popped into my head, didn't really think about it lol

;)

;) ;)