Seriously...what's the first thing to break??? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Supermassive · 12-01-2012, 02:04 AM

I'm asking mostly because my turbo kit is soon to be here, and I am wondering what, if anything has broken due to the strain of 400+ HP and 300+ ftlbs of torque. It's been tough to follow every turbo build thread and I had followed AP's thread up until they broke a shift fork or something in the transmission from accidentally jumping the car. I don't consider the clutch as a component to worry about because I already have a Clutchmasters FX400 6 puck clutch ready to install once my turbo kit arrives. My question is based more around the driveline/gears/and crank bearing surfaces.

My first concern is for the final drive gears. Has anyone who has been running these power figures monitored rear diff condition and wear on the gears? Does the transmission show signs of wear or stiff shifting? How about the bearings in the rear axle carriers?

I know some of this may have been answered, but the search function is pretty much showing me nothing of note.

Or is this car really built for this kind of punishment?

FreshFRS · 12-01-2012, 02:25 AM

so far i don't think anything has broken. i would say that most likely the first thing to break will be axleshafts on a bad launch, but they haven't gone yet. so far all the big power guys are only changing clutches

BRZranger · 12-01-2012, 02:44 AM

Slight thread jack, how about on a AT? From what I've read, the AT can handle a bit more upgraded power than MT due to the torque converter vs clutch.

JoeBoxer · 12-01-2012, 02:58 AM

Quote:

Originally Posted by brzranger

Slight thread jack, how about on a AT? From what I've read, the AT can handle a bit more upgraded power than MT due to the torque converter vs clutch.

Heat is the enemy with an Auto, if an external oil cooler is possible i would recommend it. Engine oil cooler wouldn't hurt either for auto or manual. I don't think anybody really knows what's going to go first but rear end would be possible if you do a lot of launching. Best advice i have is to use quality fluids, change them regularly, and don't beat on the car all the time.

Supermassive · 12-01-2012, 07:09 AM

Damn...I still need an oil cooler...wonder what P&L is cooking up, last time I talked to them they said they had a prototype...

Coheed · 12-01-2012, 08:44 AM

With the sounds from all the fast cars, looks like the stock diff mounts and motor mounts will need an upgrade right after the clutch. And don't bang up the gearbox, because it isn't designed for constant beating on high hp.

VSGTS14 · 12-01-2012, 09:56 AM

i think the head gaskets will eventually go from all the boost or the piston rings won't be able to handle the boost after some time. the two normal items to go on a boxer motor. in due time though. you can put plenty of miles on before these will show signs of wear.

JoeBoxer · 12-01-2012, 05:21 PM

"That 100 shot of NOS blew the welds on the intake"

carbonBLUE · 12-02-2012, 10:31 PM

Quote:

Originally Posted by JoeBoxer

Heat is the enemy with an Auto, if an external oil cooler is possible i would recommend it. Engine oil cooler wouldn't hurt either for auto or manual. I don't think anybody really knows what's going to go first but rear end would be possible if you do a lot of launching. Best advice i have is to use quality fluids, change them regularly, and don't beat on the car all the time.

what?

yeah the auto i think has seen 400whp without an issue, but it was ONE pull, i would like to see the amount of heat generated from that pull in the transmission

vs stock

Synack · 12-02-2012, 10:49 PM

I just bought forged pistons and gaskets to go along with it. I think I'll be safe for a while. As soon as I get a clutch in there, I'll jump from 325whp to 400 and I'll call it a day power wise.

Hopefully just oil changes and being smart about everything from here on out. I'll likely upgrade stuff here and there to make sure everything operates smoothly for as long as possible.

BoostedWrbBrz · 12-03-2012, 09:32 PM

Quote:

Originally Posted by JoeBoxer

"That 100 shot of NOS blew the welds on the intake"

"Now me and the mad scientist gotta rip apart the block, and replace the piston rings ya fried!"

nix · 12-04-2012, 03:38 AM

Damn you guys I'm going to watch F&F1 tonight now.

arghx7 · 12-04-2012, 04:22 PM

Quote:

Originally Posted by JoeBoxer

Heat is the enemy with an Auto, if an external oil cooler is possible i would recommend it. Engine oil cooler wouldn't hurt either for auto or manual. I don't think anybody really knows what's going to go first but rear end would be possible if you do a lot of launching. Best advice i have is to use quality fluids, change them regularly, and don't beat on the car all the time.

Granny shiftin' , not double-clutchin like ya should

Frostyman · 12-04-2012, 04:45 PM

Could you tell me right quick what would be a better motor for my Skyline, a Gallo 12 or a Gallo 24?

12-01-2012, 09:56 AM	#7
VSGTS14 987 Motorsports Join Date: Aug 2012 Drives: '13 WO FR-S Location: Phillipsburg, NJ Posts: 340 Thanks: 1 Thanked 97 Times in 66 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	i think the head gaskets will eventually go from all the boost or the piston rings won't be able to handle the boost after some time. the two normal items to go on a boxer motor. in due time though. you can put plenty of miles on before these will show signs of wear. __________________ '13 WO FR-S Track Car Build

12-02-2012, 10:49 PM	#10
Synack Boosted Join Date: Jul 2012 Drives: Sideways Location: Atlanta Georgia USA Posts: 2,377 Thanks: 388 Thanked 716 Times in 414 Posts Mentioned: 25 Post(s) Tagged: 0 Thread(s)	I just bought forged pistons and gaskets to go along with it. I think I'll be safe for a while. As soon as I get a clutch in there, I'll jump from 325whp to 400 and I'll call it a day power wise. Hopefully just oil changes and being smart about everything from here on out. I'll likely upgrade stuff here and there to make sure everything operates smoothly for as long as possible. __________________ *Nismo 370Z 300whp -> FR-S Turbo 450whp on E85 -> Z06 Corvette 500whp*

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12-01-2012, 02:44 AM	#3
BRZranger Senior Member Join Date: May 2012 Drives: BRZ Location: Everett, WA Posts: 736 Thanks: 996 Thanked 268 Times in 180 Posts Mentioned: 15 Post(s) Tagged: 0 Thread(s)	Slight thread jack, how about on a AT? From what I've read, the AT can handle a bit more upgraded power than MT due to the torque converter vs clutch.

12-01-2012, 08:44 AM	#6
Coheed Senior Member Join Date: Jun 2012 Drives: DGM BRZ Limited Location: Seattle Posts: 813 Thanks: 209 Thanked 225 Times in 157 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	With the sounds from all the fast cars, looks like the stock diff mounts and motor mounts will need an upgrade right after the clutch. And don't bang up the gearbox, because it isn't designed for constant beating on high hp.

12-01-2012, 05:21 PM	#8
JoeBoxer Senior Member Join Date: Jul 2012 Drives: Whiteout FR-S Location: Arkansas Posts: 4,154 Thanks: 1,666 Thanked 1,627 Times in 997 Posts Mentioned: 72 Post(s) Tagged: 0 Thread(s)	"That 100 shot of NOS blew the welds on the intake"

12-04-2012, 04:45 PM	#14
Frostyman Senior Member Join Date: Oct 2012 Drives: 2013 Raven FRS Location: Virginia Beach, Va Posts: 496 Thanks: 30 Thanked 143 Times in 93 Posts Mentioned: 18 Post(s) Tagged: 3 Thread(s)	Could you tell me right quick what would be a better motor for my Skyline, a Gallo 12 or a Gallo 24?

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