RR Racing SuperCharger / Tuning - All GSF model years now
03-16-19, 03:51 AM
#16
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Toyota forge all their cranks and rods. Pistons are cast though. Didn't seem to be a problem with the 2JZ-GTE engines up to about 2.5x rated hp. That's the real question - did Lexus skimp on something, like they did on the 2JZ-GE rods in the IS300s? Those engines suffered under boost with the OEM rods. But all you needed to do was replace them with 2JZ-GTE rods and life was grand. Few are daily driving the 2UR in the IS, RC, or GS F models with superchargers to be able to say what the reliability is, or how it has changed with boost. The only thing that is certain is, it is not logical to expect the same service life from an NA engine that has been boosted compared to the same engine that has not.
Here is a fact for you, we have had ZERO RCF/GSF boosted engine or transmission failures in the past 2 years since introducing our SC kit, and you can bet that if there was a single failure, that info would be plastered all over social media
Pistons are hypereutectic cast aluminum but there are 8 of them on a 2ur-gse and 6 of them on a 2jz-gte.... one of the other keys to the reliability of the RCF engine is the robustness of the stock oil and water cooling system. We extensively track test our cars and have had zero issues with overheating. Those of you who don’t Road Race have even less to worry about as it’s impossible to overheat these cars on the street. Keeping oil and coolant temps in check is critical, as the pistons are oil cooled. Piston ringland failure occurs due to 2 main reasons: (1) time spent at high temperature weakens the aluminum and (2) overheating can cause piston rings to butt and put high stress on the piston ringland.
Regarding Tundra engine failures, with a mass marketed kit like that there are bound to be failures caused by boneheads who fail to service their cars, or run crap gas. There were other factors as well, like insufficient cooling for heavy duty applications, and even some issues with the tune Toyota was providing. Lastly, we aren’t big fans of installing positive displacement roots blowers on high compression NA cars. They make more boost at low to mid range which puts more stress on drivetrain components. We are also not big fans of the roots blowers with air/water heat exchangers as they tend to heat soak badly, particularly at lower vehicle speeds.... so heat soak combined with high boost at low rpms is potentially a bad combo.
Rafi
Last edited by RRRacing; 03-16-19 at 04:11 AM.
03-16-19, 07:15 AM
#17
Here is a fact for you, we have had ZERO RCF/GSF boosted engine or transmission failures in the past 2 years since introducing our SC kit, and you can bet that if there was a single failure, that info would be plastered all over social media
Pistons are hypereutectic cast aluminum but there are 8 of them on a 2ur-gse and 6 of them on a 2jz-gte.... one of the other keys to the reliability of the RCF engine is the robustness of the stock oil and water cooling system. We extensively track test our cars and have had zero issues with overheating. Those of you who don’t Road Race have even less to worry about as it’s impossible to overheat these cars on the street. Keeping oil and coolant temps in check is critical, as the pistons are oil cooled. Piston ringland failure occurs due to 2 main reasons: (1) time spent at high temperature weakens the aluminum and (2) overheating can cause piston rings to butt and put high stress on the piston ringland.
Regarding Tundra engine failures, with a mass marketed kit like that there are bound to be failures caused by boneheads who fail to service their cars, or run crap gas. There were other factors as well, like insufficient cooling for heavy duty applications, and even some issues with the tune Toyota was providing. Lastly, we aren’t big fans of installing positive displacement roots blowers on high compression NA cars. They make more boost at low to mid range which puts more stress on drivetrain components. We are also not big fans of the roots blowers with air/water heat exchangers as they tend to heat soak badly, particularly at lower vehicle speeds.... so heat soak combined with high boost at low rpms is potentially a bad combo.
Rafi
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WaterFish (09-10-19)
03-16-19, 09:59 AM
#19
Here is a fact for you, we have had ZERO RCF/GSF boosted engine or transmission failures in the past 2 years since introducing our SC kit, and you can bet that if there was a single failure, that info would be plastered all over social media
Pistons are hypereutectic cast aluminum but there are 8 of them on a 2ur-gse and 6 of them on a 2jz-gte.... one of the other keys to the reliability of the RCF engine is the robustness of the stock oil and water cooling system. We extensively track test our cars and have had zero issues with overheating. Those of you who don’t Road Race have even less to worry about as it’s impossible to overheat these cars on the street. Keeping oil and coolant temps in check is critical, as the pistons are oil cooled. Piston ringland failure occurs due to 2 main reasons: (1) time spent at high temperature weakens the aluminum and (2) overheating can cause piston rings to butt and put high stress on the piston ringland.
Regarding Tundra engine failures, with a mass marketed kit like that there are bound to be failures caused by boneheads who fail to service their cars, or run crap gas. There were other factors as well, like insufficient cooling for heavy duty applications, and even some issues with the tune Toyota was providing. Lastly, we aren’t big fans of installing positive displacement roots blowers on high compression NA cars. They make more boost at low to mid range which puts more stress on drivetrain components. We are also not big fans of the roots blowers with air/water heat exchangers as they tend to heat soak badly, particularly at lower vehicle speeds.... so heat soak combined with high boost at low rpms is potentially a bad combo.
Rafi
However, I’m curious to know how many boosted RCF/GSF are out there?
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designo (03-21-19)
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rhunter112 (07-18-19)
03-23-19, 07:38 AM
#25
03-23-19, 08:55 AM
#26
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iTrader: (1)
A supercharged GSF wouldn’t be any less street legal than a GSF with headers or exhaust.
Rafi
03-28-19, 01:09 AM
#27
Tech Info Resource
iTrader: (2)
Regarding the Tundra superchargers - the guy at TRD USA was well known in the community for not being the sharpest crayon in the box. Not one of the TRD superchargers was well done and he was responsible for all of them. Ask all the Scion tC owners with broken supercharger mount brackets...
Truly a pity TRD USA didn't do adequate testing to ensure their product would be as reliable as the underlying platform without the modification. It's this history that makes many of us balk. One would think TRD would have some skin in the game to make sure they do it right, but that surely was not the case. On the positive side, I don't think RRRacing is depending on t-shirt and coffee cup sales to make their numbers as TRD USA is/was (or NASCAR/Formula Atlantic for that matter).
Truly a pity TRD USA didn't do adequate testing to ensure their product would be as reliable as the underlying platform without the modification. It's this history that makes many of us balk. One would think TRD would have some skin in the game to make sure they do it right, but that surely was not the case. On the positive side, I don't think RRRacing is depending on t-shirt and coffee cup sales to make their numbers as TRD USA is/was (or NASCAR/Formula Atlantic for that matter).
03-28-19, 03:27 AM
#28
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iTrader: (1)
Regarding the Tundra superchargers - the guy at TRD USA was well known in the community for not being the sharpest crayon in the box. Not one of the TRD superchargers was well done and he was responsible for all of them. Ask all the Scion tC owners with broken supercharger mount brackets...
Truly a pity TRD USA didn't do adequate testing to ensure their product would be as reliable as the underlying platform without the modification. It's this history that makes many of us balk. One would think TRD would have some skin in the game to make sure they do it right, but that surely was not the case. On the positive side, I don't think RRRacing is depending on t-shirt and coffee cup sales to make their numbers as TRD USA is/was (or NASCAR/Formula Atlantic for that matter).
Truly a pity TRD USA didn't do adequate testing to ensure their product would be as reliable as the underlying platform without the modification. It's this history that makes many of us balk. One would think TRD would have some skin in the game to make sure they do it right, but that surely was not the case. On the positive side, I don't think RRRacing is depending on t-shirt and coffee cup sales to make their numbers as TRD USA is/was (or NASCAR/Formula Atlantic for that matter).
Rafi
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MasterWork (03-28-19)
09-10-19, 10:35 AM
#29
Regarding the Tundra superchargers - the guy at TRD USA was well known in the community for not being the sharpest crayon in the box. Not one of the TRD superchargers was well done and he was responsible for all of them. Ask all the Scion tC owners with broken supercharger mount brackets...
Truly a pity TRD USA didn't do adequate testing to ensure their product would be as reliable as the underlying platform without the modification. It's this history that makes many of us balk. One would think TRD would have some skin in the game to make sure they do it right, but that surely was not the case. On the positive side, I don't think RRRacing is depending on t-shirt and coffee cup sales to make their numbers as TRD USA is/was (or NASCAR/Formula Atlantic for that matter).
Truly a pity TRD USA didn't do adequate testing to ensure their product would be as reliable as the underlying platform without the modification. It's this history that makes many of us balk. One would think TRD would have some skin in the game to make sure they do it right, but that surely was not the case. On the positive side, I don't think RRRacing is depending on t-shirt and coffee cup sales to make their numbers as TRD USA is/was (or NASCAR/Formula Atlantic for that matter).
09-10-19, 10:40 AM
#30
I think one of the problems with TRD/Toyota putting out an SC kit is the assumption that it’ll be bulletproof, idiotproof, and warrantied, so this invites abuse and carelessness. Also, dealers aren’t experienced in logging and diagnosing tuning issues, so lack of support is another issue.
Rafi
Rafi