Toyota "Preparing" Hotter Supra GRMN, Says Chief Engineer

[Bryster]

Yeah, if they had a manual, that alone would cause a ton of people to flip sides, let alone the other improvements.

Coughs JD!

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[formsracing]

If performance is the goal, i don’t believe it would be manual. Perhaps an “enthusiast” version with a manual, but not the top line trim if it is to compete.

 

[MA617M]

I think the base supra is "Toyota Supra GR" with the hero car being "Toyota Supra GRMN"

 

[Nurburgring]

N54 has 84mm bore and it has the tiniest intake valves, 31.4mm partly because to have room for DI injector partly because the dome shape is weird. B58 has smaller bore size and i fear it has even smaller valves. The integrated manifold is something new to me and i don't know if it should be upgraded or even how to do such.

B58 valve sizes are 30.1mm (intake) and 28.5mm (exhaust).

The major drawback is the trans in my opinion. If it had DCT i would be all over that car because the upgrades already exist and are proven to work to whatever TQ you throw at them. The torque converter though never had a upgrade solution. People have for ages tried to upgrade their ZF 6hp trans and they couldn't. The TCU is too complicated to get the work.

Supra will not use a ZF6HP, it will be a ZF8HP, and as far as torque handling capabilities we just don`t know yet. Several versions of the gearbox are sold, with a wide range of factory torque ratings (8HP30 = 300Nm all the way to 8HP90 = 900Nm). Toyota knows these cars will be modified, hopefully they make the right call.

 

[Nurburgring]

Maybe
4 cyl = Supra
6 cyl = Supra GR
Hero = Supra GRMN

Somebody has to leak it. Come on, Poland!

 

[MA617M]

That makes sense, especially based on the GR product heirachy that was posted, and I know for certain in Au it will be the 'Toyota GR Supra'

 

[Bryster]

Maybe
4 cyl = Supra
6 cyl = Supra GR
Hero = Supra GRMN

Somebody has to leak it. Come on, Poland!

GR Sport?

 

[Jeff Lange]

FWIW, GRMN has been big on manuals up to this point. Going as far as to offer a manual in an auto-only car (Mark X) behind an auto-only engine (2GR-FSE). All that development for 100 cars.

Then people had the audacity to say Toyota didn't offer a manual behind the 2GR in the IS350 because it would cost too much to develop (lol).

Jeff

 

[Bryster]

FWIW, GRMN has been big on manuals up to this point. Going as far as to offer a manual in an auto-only car (Mark X) behind an auto-only engine (2GR-FSE). All that development for 100 cars.

Then people had the audacity to say Toyota didn't offer a manual behind the 2GR in the IS350 because it would cost too much to develop (lol).

Jeff

So you're saying Toyota can do anything??

 

[McWicked]

FWIW, GRMN has been big on manuals up to this point. Going as far as to offer a manual in an auto-only car (Mark X) behind an auto-only engine (2GR-FSE). All that development for 100 cars.

Then people had the audacity to say Toyota didn't offer a manual behind the 2GR in the IS350 because it would cost too much to develop (lol).

Jeff

I don't see any contradiction. It can be economically viable to offer something in small batch production that doesn't scale to volume production. So a custom bell-housing that has a 9-hour cut time on the CNC is viable for a production run of 100, but for 10,000-100,000 not so much.

 

[A70TTR]

I think he was more getting at the fact that it was technically available, so development cost was moot. That doesn't mean it's economically viable to offer as you said however.

 

[upnsmoke]

Maybe
4 cyl = Supra
6 cyl = Supra GR
Hero = Supra GRMN

Somebody has to leak it. Come on, Poland!

Supra has taken the Mustang and European way... having various engine sizes and performance

I personally think they should've went Turbo or NA like the Mark IV method.....

 

[AsupramkvC]

Supra has taken the Mustang and European way... having various engine sizes and performance

I personally think they should've went Turbo or NA like the Mark IV method.....

I agree with you. That’s how I want it to happen as well, like the MKIV; or have one engine but with different levels tuning to differentiate base(low) from upper(mid-high) trims.

Toyota wanted to partner with BMW specifically for its straight-six engines, as the Supra has historically used an I6 and Toyota no longer made one. And, at least according to the Supra’s chief engineer, fans would rather have a non-Toyota straight-six than a Toyota-sourced V6. So that’s why we have a Bavarian powereed Toyota Supra. And it’s an engine the Japanese brand seems to be proud of.

 

[mas921]

B58 valve sizes are 30.1mm (intake) and 28.5mm (exhaust).




Supra will not use a ZF6HP, it will be a ZF8HP, and as far as torque handling capabilities we just don`t know yet. Several versions of the gearbox are sold, with a wide range of factory torque ratings (8HP30 = 300Nm all the way to 8HP90 = 900Nm). Toyota knows these cars will be modified, hopefully they make the right call.

actually, we do know that its the 8HP50 from RealOEM, so the torque capacity is around 500NM, unless there is a special treatment to the Supra unit (it does say 8HP51 tbh)

 

[justbake]

Supra has taken the Mustang and European way... having various engine sizes and performance

I personally think they should've went Turbo or NA like the Mark IV method.....

All car companies do this.
There's really no sense in having an NA I6 with today's environmental standards and with how strong turbo 4s can be. Not to mention BMW doesn't have NA I6's anymore.

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