Largest displacement now / ever

[leeharvey418]

There’s a Viper with the 8.3 L engine for sale across the road from my office. Should I go for the win?

 

[02SE]

There’s a Viper with the 8.3 L engine for sale across the road from my office. Should I go for the win?

No, get the 2013-2017 with the 8.4 L. Fit and finsh, handling, well, everything, is much better.

 

[honeeagle]

volvo has 13 litres

 

[leeharvey418]

No, get the 2013-2017 with the 8.4 L. Fit and finsh, handling, well, everything, is much better.

To be fair, that’s a pretty low bar.

 

[wings&wheels]

9.6

(It's got Brodix heads painted black.)

In auto form it made 900 HP.
In marine form it makes 800Lb FT

This mill is a giant kitten with heart of lion.
It will make grown men giggle for days, and women pee their pants.

Its still being rigged here so looks a mess, but it's all tidy now.


View attachment 291049View attachment 291050

I'd be proud to put those manifolds and elbows on a shelf in my den!

 

[4wheeldog]

My Cessna Centurion C210E had an IO520 Continental engine, 285hp.
Largest land bound engine was the 283 bored to 292 in my ‘59 Chevy truck.

 

[UncleDave]

I'd be proud to put those manifolds and elbows on a shelf in my den!

Thanks. They are beauts for sure. It's a top of the line manifold system.

I could make more HP with tube headers, but at 3X the cost and less than half the life, I'll compromise there.

 

[Rmay635703]

My father drove a 12 liter school bus

It was the oldest in their fleet and had the most gears to shift through

Owned
Had a 7.3, a 6.2 and a 5.7 diesel

His diesel pusher had an old black Cummins
Gas we never had more than a 350

 

[Zee09]

Had a 472 and 500 ci Caddy
Now nothing but 2Ls

 

[Chris142]

My father drove a 12 liter school bus

It was the oldest in their fleet and had the most gears to shift through

Owned
Had a 7.3, a 6.2 and a 5.7 diesel

His diesel pusher had an old black Cummins
Gas we never had more than a 350

I rode a 1955 Crown bus in elementary school. It had a 250 HP 2 stroke Detroit diesel,5 speed, no ps or ac.

Most of my bus drivers were females. Every one of them double clutched every gear and I never heard any of them scratch a gear

 

[Fitter30]

1970 - 1976 Cadi Eldorado. 500 cu in 8.2 liter 400 hp/ 550 lbs torque

 

[Allaned]

Own the smallest displacement I ever have currently: 2.0L. My over-all trend has been decreased displacement and increased power:

Mopar 4.7L V8 (235hp/295tq) >
Ford/Mazda 3.0L V6 (215hp/200tq) >
Nissan 3.5L V6 (290hp/260tq) >
VW 2.0L I4 (290hp/305tq) [tuned]

Which leads me to state, bigger is not always better. I now own an engine less than half the size of one bank of my old Grand Cherokee's powerplant that puts out more horsepower and torque thanks to the wonders of boost. I don't think small boosted engines are the best choice in every situation, but in many they make far more sense than just plopping a bigger block in there.

Because a boosted engine is actually displacing more air than that determined by stroke and bore.

 

[GRjdm]

Had a 4.6 L V8 in Lexus GX460.
But now, all of my cars are forced induction and 2.0 L or less displacement.

 

[02SE]

To be fair, that’s a pretty low bar.

Have you been in or driven the various models? I have friends who owned 1st and 2nd gen Vipers. I owned a 2013 GTS, and now a 2017 ACR. The 3rd gen is vastly improved and very nicely done over the older models.

They dropped it as it didn't sell in big numbers, and didn't meet side-curtain airbag standards.

A couple stock 3rd gen ACR videos.

 

[trd1zz]

Had a 4.6 L V8 in Lexus GX460.
But now, all of my cars are forced induction and 2.0 L or less displacement.

Tell us how you really feel

 

[burbguy82]

biggest owned: 7.4 Vortec, 454 in a 99 suburban and my motorhome

biggest still own: 7.4 Vortec 454, in my motor home

 

[Marcozi]

Spruance class destroyer. Powered by four GE LM2500 gas turbine engines. Total horsepower was 80,000 shp.

 

[02SE]

Spruance class destroyer. Powered by four GE LM2500 gas turbine engines. Total horsepower was 80,000 shp.

You own a Spruance Class Destroyer? Ok, that is pretty darn cool.

 

[Cujet]

Current and largest to date; Lycoming O-540, 540ci horizontally opposed 6, or 8.9 litres for metric folk.

That is among my favorite light aircraft engines. Nothing particularly high tech about it, just a parallel valve Lycoming made from great quality parts. They have good power to weight, are amazingly efficient in fuel injected form, easy to maintain and as reliable as anything else out there.

For those who don't know, this is the exact engine you want when you land your beastly bush plane on the dry river bed and it's time to go. It will get you up, and over the nearby mountains every single time.

Prior to retirement I got to fly a 9.5L Extra NG with a larger cousin of that 540 engine. The AEIO 580 (9.5L) . 320HP, angle valve, roller cam monster. Impressive engine for sure. But it has known oil temp issues that are difficult to tame and limiting on hot days. As throttling back is the only real answer, unless you go with larger oil coolers. (often not an option for certified aircraft)

Anyway, the 580 is one super smooth engine. Gobs of power right where it is needed. The opposed piston design ensures it is smooth.

 

[relentless044]

I don't own it but drive a wrecker with a 15L cummins