Upgraded Turbos

[Boostedtoy]

Does anyone offer upgraded turbochargers for the Hurricane?

 

[Webbo]

Need to be able to tune after larger turbos and no one has tuned the truck yet.

 

[Boostedtoy]

Hopefully someone will be able to crack the ECU soon. I really want to find out what this truck is capable of.

 

[Boostedtoy]

I was concerned about the 8HP75 (I previously had a 2022 TRX with the 8HP95), which I still am as an unaltered transmission.

Not sure about posting rules so I’ll not mention the name of the vendor, but it appears there is robust aftermarket support for the transmission.

From what I have gathered, this HO version will be able to handle 800hp for a long time, 1000hp for some time (obviously less). That’s pretty damn stout.

 

[Boostedtoy]

Also, I’m extremely excited to begin running E85 once the ECU is cracked. Government subsidized race fuel…sign me up!

 

[Dark Knight G45]

 

[frogjbm]

Pretty sure RAM engineers wouldn’t have paired a transmission that couldn’t sustain the output of this vehicle. We don’t even know if RAM made any mechanical changes to the transmission specifically for the RHO. Maybe we should ask this question through Tim and Barry and their RAM engineering sources @testerdahl @Ctech-Review

 

[Ctech-Review]

Here is what I can share...I have been told by sources with the proper hardware the Hurricane can handle 1000hp. With that being said use your imagination on what that hardware can be. Also yes it has the ZF8hp75 vs the tRX 8HP95 which has higher holding force...but the 75 is still a beast and I would up against a Ford 10R80 any day of the week for performance. Until an unlocked tune is available we will only have a few piggy back tunes (plus some others coming on horizon). I have high hopes for the Hurricane and I have spoken to some engine builders that have already pulled apart both the SO and HO engines and they have been impressed by the choice of internals usedo n the HO.

 

[RHOfan]

I was concerned about the 8HP75 (I previously had a 2022 TRX with the 8HP95), which I still am as an unaltered transmission.

Not sure about posting rules so I’ll not mention the name of the vendor, but it appears there is robust aftermarket support for the transmission.

From what I have gathered, this HO version will be able to handle 800hp for a long time, 1000hp for some time (obviously less). That’s pretty damn stout.

HP is irrelevant…transmissions are rated for torque input capacity. The stock Hurricane produces enough torque to nearly max-out the 8HP75 (551 ft/lb). The highest capacity version is the 8HP95 (738 ft/lb), found in TRX.

Can the RHO transmission handle more than 551 ft/lb? Yes, but it won’t meet the durability standards set by engineers at higher inputs.

 

[frogjbm]

But I'm wondering did Ram make any changes to the transmission such as upgraded clutch packs, TCM tuning, larger transmission cooler than regular 1500's, etc? With towing and the additional power from the HEMI, these are valid concerns to maxing out the durability of the standard 8HP75. I wish RAM wasn't like a secret society like the CIA, just tell us how you engineered the vehicle you bastards!

 

[Deange2001]

Lol I love it that we have some people already thinking about or adding mods to their cars and then there is the rest of us that can't get the car to start.

 

[Boostedtoy]

Lol I love it that we have some people already thinking about or adding mods to their cars and then there is the rest of us that can't get the car to start.

Sorry to hear! I’m frustrated for those of you who are in this situation.

 

[Deange2001]

Sorry to hear! I’m frustrated for those of you who are in this situation.

Haha - you are good man. I am more making light of the situation. I am genuinely happy for the people who have had no issues and are able to treat the truck the way it was intended to be treated. Hopefully, things get figured out for some of the problematic trucks before people decide to move on.

 

[Dark Knight G45]

The extra power can be tuned so that the torque doesn’t hit hard down low as to preserve the transmission, best as can be done.

Whoever has the balls and wallet to push the limits, I salute you and look forward to seeing your failures and success.

 

[Boostedtoy]

HP is irrelevant…transmissions are rated for torque input capacity. The stock Hurricane produces enough torque to nearly max-out the 8HP75 (551 ft/lb). The highest capacity version is the 8HP95 (738 ft/lb), found in TRX.

Can the RHO transmission handle more than 551 ft/lb? Yes, but it won’t meet the durability standards set by engineers at higher inputs.

I agree torque, and will add where the torque is produced at a given engine speed matters. Load on the transmission at lower RPM’s is more taxing than if the engine torque output occurs in mid-RPM’s. Same goes with your lower rotating assembly. Ask a rod if it likes peak torque at 1900 RPM or at 4800 RPM.

I am learning more about these ZF’s, but am becoming more comfortable introducing more torque and horsepower. I know the piggybacks produce results, but if I’m going to head down the path of non-OEM turbochargers, I’m going to wait for the ECU to be unlocked. I’ll feel far more comfortable when a reputable tuner can marry the TCM tune with the ECU. Line pressures, shift timing and torque management need to be in the cards for amending. I’ve had stock automatic transmissions, with a tune, last a long time with 50 percent more power when not abusing the vehicle. You still get to make hits and do nice pulls, but I agree that what the stock transmission was designed for will not hold up with meaningful increase in torque with the same durability testing.

That all said, not knowing if any nuanced changes were made to the 8HP75 for the RHO, I would think in this truck (torque handling will be decreased versus the HO in a non-RHO application…unsprung rotational mass, higher vehicle weight), we could see this truck living with reasonable driving at 650-675whp (knowing its awhp) for a while.

 

[itsmekylep]

Here is what I can share...I have been told by sources with the proper hardware the Hurricane can handle 1000hp. With that being said use your imagination on what that hardware can be. Also yes it has the ZF8hp75 vs the tRX 8HP95 which has higher holding force...but the 75 is still a beast and I would up against a Ford 10R80 any day of the week for performance. Until an unlocked tune is available we will only have a few piggy back tunes (plus some others coming on horizon). I have high hopes for the Hurricane and I have spoken to some engine builders that have already pulled apart both the SO and HO engines and they have been impressed by the choice of internals usedo n the HO.

Let’s ask the engineers why these wont do a proper 1-2 shift at WOT after installing a 2” or bigger leveling kit.

 

[RaMatt]

Subscribed on this one. I was googling today upgraded turbine wheel Ram RHO. No results.

 

[frogjbm]

Let’s ask the engineers why these wont do a proper 1-2 shift at WOT after installing a 2” or bigger leveling kit.

I don’t think it’s because of your leveling kit, I think you’re dealing with a coincidental scenario and it’s caused by a failed module or something similar. There are so many guys running a level beyond 2” with zero issues, that tells me everything I need to know.

 

[itsmekylep]

I don’t think it’s because of your leveling kit, I think you’re dealing with a coincidental scenario and it’s caused by a failed module or something similar. There are so many guys running a level beyond 2” with zero issues, that tells me everything I need to know.

I don’t think I’ve heard from a single person that said theirs is fine. But at least 5 people who have said they are having issues. But only 2” or bigger.

If there are guys with no issues, I’d love for them to speak up on my previous post before I spend $800+ to remove the kit. Lol

 

[gram10]

Coming from an 8hp45, which is rated for 330 ft lbs, but was running about 580 to 600 wtq. All that was required was a transmission tune, this gave it a line pressure bump and also disable torque limiters. This was a big issue in the early bmw b58 days, Tuners couldn't get big power until torque limiters in the trans were able to be disabled the 8hp45 in bmws is known to be pretty safe to 600 awtq, I assume an 8hp75 can do that and then some. Biggest thing for this power train will be am ecu and tcu tune. There's a company xhp that does bmw transmission tunes and they are fantastic. There is also a company pure drivetrain solutions that already makes trx trans, tramsfercase, etc upgrades. They show upgrades on there website for the 8hp75, im not sure it's rho specific though. We just need some tuning support and the rest will follow.