FA20 Stock Capacity

[hmong337]

Wonder if these guys are blowing transmissions?

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[GotBRZ1691]

Originally Posted by hmong337

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

Bad Synchros like everyone else. Dealership is being PITA.

[GotBRZ1691]

Originally Posted by PandaSPUR

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?

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.

[hmong337]

Originally Posted by GotBRZ1691

Bad Synchros like everyone else. Dealership is being PITA.

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

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

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[GotBRZ1691]

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.

[Swivel]

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?

[Ultramaroon]

Originally Posted by Swivel

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.

[Captain Snooze]

Originally Posted by hmong337

That looks like mad fun!

[Ultramaroon]

Originally Posted by hmong337

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

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

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

[AJPG]

Originally Posted by slicktop

If some cars are holding at 450+ without issue, and some let go with "conservative" tunes at 250, that is a tune issue. The window of error in that is gigantic. If the cars making 450+, only made it one time, then sure. But the fact that there are a lot making that much power for months and quickly approaching a year, that screams tune issues to me.

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

[HaDDeS]

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

[Swivel]

Originally Posted by Ultramaroon

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

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.

Originally Posted by HaDDeS

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

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 ). 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.

[Ultramaroon]

Originally Posted by Swivel

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.

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

Originally Posted by Swivel

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.

Ditto.

[Mikeez]

Originally Posted by tennisfreak

Just curious.

If shops are saying dont go above 330hp and at the same time dont go forced induction how would anyone get above (or even to) 300 hp without going forced induction?

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