F/I Blowing motors facts - Page 23 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

FRS Justin · 02-22-2016, 08:01 PM

I have had this discussion with Pauter rods many times, According to Pauter A low hard pull lets say 2k up damages the rods because of the load. Even tho the engine has the power to overcome the load the force exerted on the rods is most at at full load and low rpm.

Kodename47 · 02-23-2016, 03:41 AM

Quote:

Originally Posted by FRS Justin

I have had this discussion with Pauter rods many times, According to Pauter A low hard pull lets say 2k up damages the rods because of the load. Even tho the engine has the power to overcome the load the force exerted on the rods is most at at full load and low rpm.

Therefore limiting torque at the bottom end on this engine (stock) is ideal. Applying torque when the engine already has momentum is fine, that's also why a turbo could potentially cause more issues if the boost all comes in at once at low RPM.

s2d4 · 02-23-2016, 10:32 AM

^don't drive it like a v8. You get elitist dumb ass mofo's dissing automatics then they try and go up a hill or over take in high gears. Learn to change gears for once, friggin morons.

I haven't spent much time on this forum over the last year, not much has changed.

denso · 02-23-2016, 12:26 PM

Yeah, it isnt a diesel engine.

edit: btw I dont get it why ppl think about "low rpm" (<4000) torque at this engine. It is desinged to put out the most power at higher rpms. Throw the torque up at the rpm band and suprise yourself - its fcking fast and will last :P

orangespark · 02-23-2016, 02:27 PM

Are there forged after market connecting rods for the engine in case someone wanted to go F/I?

Edit: Actually never mind. Found them. They aren't even that expensive. I don't see why you wouldn't want to invest in them.

denso · 02-23-2016, 04:47 PM

Yes thats right. Someone here in germany have build the block with skunk2 h-beam con rods and everything stock (internals, gaskets, studs) - 550ps.

SkAsphalt · 02-23-2016, 05:09 PM

Why does this thread get to have "Facts" in the title?

makinen · 02-24-2016, 11:20 PM

Quote:

Originally Posted by denso

Yes thats right. Someone here in germany have build the block with skunk2 h-beam con rods and everything stock (internals, gaskets, studs) - 550ps.

Hi,
Did he do machining similar to this?
http://www.ft86club.com/forums/showp...9&postcount=24

denso · 02-25-2016, 11:56 AM

I dont know about this but I can ask.

blueap2 · 02-25-2016, 12:59 PM

I will also be doing this. Getting a Pauter rod tapered to fit the stock piston.

There is no structural issue since the power stroke pushes the pin down on the small end where all the material is still intact.

Only problem is that the rod can no longer be serviced. Only replaced if any small end issues arise.

Summerwolf · 02-25-2016, 01:08 PM

Quote:

Originally Posted by orangespark

Are there forged after market connecting rods for the engine in case someone wanted to go F/I?

Edit: Actually never mind. Found them. They aren't even that expensive. I don't see why you wouldn't want to invest in them.

Parts may be cheap.

Labor and proper install wouldn't be. That's most likely the reason.....

GsxrMe · 02-25-2016, 09:04 PM

I'm so happy my brz isn't my day car and I have a business car. Because when the engine comes out I would to think I can build my own. I have experience in installing rods, pistons and valve springs with retainers in my hayabusa and the pig still hasn't blown up.

Labor for a tech is high enough it's not affordable for 95% of the people of really want to build a motor for the FI setup.

Deep Six · 03-03-2016, 07:14 AM

It can happen to anyone which is not the same thing as saying it will happen to everyone. More track days, adding power, especially forced induction simply increases the likelihood that something will break and it will probably a rod.

Mine popped recently after about two weeks of forced induction. I went with the "safest" supercharger system, had it conservatively tuned to 20 degrees of advance and a 7K limiter, have the JR oil cooler and a full blown radiator but it still threw a rod accelerating onto a freeway which cut a trench across the top of the block.

Moral of the story is that blame is not an issue, understanding the potential risk and how modifications will change the odds is. You can not bet your motor that having a good tune and cooling provides any guarantee, they just change the odds a little more in your favor. I will be starting a new thread soon focused on the choices to be made when replacing a blown motor, Thankfully I have the resources to do what I want and I really expected to eventually have a built motor or a V8.

BTW there are 4 other cars with blown motors at the same shop in Orlando as I write this so yes there is an issue.

Yoda · 03-03-2016, 08:55 AM

Aww man that really sucks. Hope it was not your DD.

02-22-2016, 08:01 PM	#309
FRS Justin Senior Member Join Date: May 2014 Drives: 2013 Asphalt FRS Location: San Antonio Posts: 994 Thanks: 693 Thanked 695 Times in 417 Posts Mentioned: 22 Post(s) Tagged: 1 Thread(s)	I have had this discussion with Pauter rods many times, According to Pauter A low hard pull lets say 2k up damages the rods because of the load. Even tho the engine has the power to overcome the load the force exerted on the rods is most at at full load and low rpm. __________________ Instagram FT86PROJECT9S Facebook FT86PROJECT9S 710whp

02-23-2016, 10:32 AM	#311
s2d4 Senior Member Join Date: Mar 2013 Drives: R32 GTR, AW11 MR2 SC, GTS86 R Location: OZ Posts: 2,615 Thanks: 603 Thanked 1,223 Times in 708 Posts Mentioned: 35 Post(s) Tagged: 0 Thread(s)	^don't drive it like a v8. You get elitist dumb ass mofo's dissing automatics then they try and go up a hill or over take in high gears. Learn to change gears for once, friggin morons. I haven't spent much time on this forum over the last year, not much has changed. __________________

02-23-2016, 12:26 PM	#312
denso Member Join Date: Feb 2014 Drives: 86 Location: Germany Posts: 84 Thanks: 56 Thanked 18 Times in 16 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Yeah, it isnt a diesel engine. edit: btw I dont get it why ppl think about "low rpm" (<4000) torque at this engine. It is desinged to put out the most power at higher rpms. Throw the torque up at the rpm band and suprise yourself - its fcking fast and will last :P Last edited by denso; 02-23-2016 at 01:00 PM.

02-25-2016, 09:04 PM	#320
GsxrMe Senior Member Join Date: Jul 2015 Drives: Late 2014 Subaru BRZ Location: Cape Coral, FL Posts: 557 Thanks: 20 Thanked 183 Times in 139 Posts Mentioned: 5 Post(s) Tagged: 2 Thread(s)	I'm so happy my brz isn't my day car and I have a business car. Because when the engine comes out I would to think I can build my own. I have experience in installing rods, pistons and valve springs with retainers in my hayabusa and the pig still hasn't blown up. Labor for a tech is high enough it's not affordable for 95% of the people of really want to build a motor for the FI setup. __________________ 2014 Subaru BRZ FBM Turbokit: GTX3076R - ECUTEK HRI FlexFuel tune - FBM 3" Turboback Exhaust - 550cc Injectors - Walbro 485 Fuel Pump - 4bar Map Sensor - FBM Oil Pan - ACT SB7-XTSS - AMSOIL all fluids - Forester XT Oil Cooler - Cusco engine, trans mounts - Whiteline rear differential bushings - Perrin shifter bushing - Firehawk 235/45/17 - AEM Failsafe

03-03-2016, 07:14 AM	#321
Deep Six Senior Member Join Date: May 2013 Drives: 2013 FRS / 2013 427 Vert Location: Orlando Posts: 611 Thanks: 212 Thanked 328 Times in 197 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Add me to the list It can happen to anyone which is not the same thing as saying it will happen to everyone. More track days, adding power, especially forced induction simply increases the likelihood that something will break and it will probably a rod. Mine popped recently after about two weeks of forced induction. I went with the "safest" supercharger system, had it conservatively tuned to 20 degrees of advance and a 7K limiter, have the JR oil cooler and a full blown radiator but it still threw a rod accelerating onto a freeway which cut a trench across the top of the block. Moral of the story is that blame is not an issue, understanding the potential risk and how modifications will change the odds is. You can not bet your motor that having a good tune and cooling provides any guarantee, they just change the odds a little more in your favor. I will be starting a new thread soon focused on the choices to be made when replacing a blown motor, Thankfully I have the resources to do what I want and I really expected to eventually have a built motor or a V8. BTW there are 4 other cars with blown motors at the same shop in Orlando as I write this so yes there is an issue. __________________ [SIGPIC][/SIGPIC] 2013 FR-S Asphalt BC Coils/Rev Works UEL header/HKS Front Pipe/Racing Brake BBK/Shorai LW Battery/ACT 6 Puck Clutch/FBM Radiator & Oil Pan/JR Oil Cooler/Jackson Racing High Boost C30/Rev Works Built Motor 2016 Audi TTS APR Tuned

02-23-2016, 02:27 PM	#313
orangespark Member Join Date: Aug 2015 Drives: White Frs AT Location: Toronto Posts: 66 Thanks: 38 Thanked 13 Times in 13 Posts Mentioned: 1 Post(s) Tagged: 1 Thread(s)	Are there forged after market connecting rods for the engine in case someone wanted to go F/I? Edit: Actually never mind. Found them. They aren't even that expensive. I don't see why you wouldn't want to invest in them.

02-23-2016, 04:47 PM	#314
denso Member Join Date: Feb 2014 Drives: 86 Location: Germany Posts: 84 Thanks: 56 Thanked 18 Times in 16 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Yes thats right. Someone here in germany have build the block with skunk2 h-beam con rods and everything stock (internals, gaskets, studs) - 550ps.

02-25-2016, 11:56 AM	#317
denso Member Join Date: Feb 2014 Drives: 86 Location: Germany Posts: 84 Thanks: 56 Thanked 18 Times in 16 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I dont know about this but I can ask.

02-25-2016, 12:59 PM	#318
blueap2 Senior Member Join Date: Oct 2014 Drives: '14 FR-S Location: United States Posts: 224 Thanks: 13 Thanked 24 Times in 20 Posts Mentioned: 1 Post(s) Tagged: 2 Thread(s)	I will also be doing this. Getting a Pauter rod tapered to fit the stock piston. There is no structural issue since the power stroke pushes the pin down on the small end where all the material is still intact. Only problem is that the rod can no longer be serviced. Only replaced if any small end issues arise.

03-03-2016, 08:55 AM	#322
Yoda Senior Member Join Date: Nov 2014 Drives: Crystal Black BRZ(Sophia) Location: Greenacres, FL Posts: 284 Thanks: 266 Thanked 118 Times in 75 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Aww man that really sucks. Hope it was not your DD.

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