Goshen Fire Company Hahn Engine

[NHfirefighter88]

I miss our 79 hahn

[gsm19911]

Love the sound, reminds me of our old 1976 hahn except ours was a stick shift.

[Hanoverfirefighter]

love that roar

[XxrotorayxX]

from the inside of the cab it almost sounds like our '00 segrave quint

[kagome122885]

That Detroit Diesel 8v71 is LOUD!!! You could probably hear this thing from miles. This is what a real fire engine sounds like!!!

[ClassicTVMan81]

The idling sound on this 8V-71N appears to sound like a DDEC 6L-71TA idling at 650 rpm.

[vettedude277]

Sounds like an 8V92 to me!

[ClassicTVFan82]

My definition of how this truck's 8V-71 engine should sound when at idle: like the 6V-92TA in the Santa Barbara MTD 1985 Gillig Phantoms, as rebuilt in 1991 or '97.

[xltbob]

Oh gosh, that sounds just like my Dad's station's '81 Hahn (Northern VA area). I went to the elementary school a block down the street from the FD and everyday I heard that same long 1-2 shift and quick 2nd gear then the big RPM drop for third just before the jakebrake and the Q kicked in going down the short hill to a four-way traffic light.

[fanoseagrave]

Oh, gosh, you just reminded me of when the '74 Seagrave I mentioned earlier was new. I was in 5th Grade; we were downhill and 1/2 block to the left of the volunteer fire company, where, like you mentioned, the truck would turn out, it would have the same long 1-2 shift, quick 2nd, then the big RPM drop into third as it would cruise down the hill then the Q would sound then the Jake Brake as it would slow for the intersection at the bottom of the hill, followed by the air horns. MEMORIES!!

[fanoseagrave]

From inside this truck sounds exactly like our old 1974 Seagrave P-cab pump, which had an 8V-71N and an Allison 4-speed automatic. That truck drove like a car; handled very nicely.

[creedmty]

if i'm wrong then this hahn engine has a 8v92!

[HITMANHITMAN2000]

u sure...that sounds like a 71.....

[ClassicTVFan82]

Another idle speed sound comparison: the 6L-71TA DDEC used in 1991-92 Flxible Metros.

[gm1965]

8v71 but probably a 350 hp, not an older 318 which would account for the higher sounding idle.

[CHRISEVENS]

This is why I love you tube, a bunch of people from all over the country enjoying a Detroit Diesel powered fire truck. We don't know if it's an 8v71 or 8v92. I say 8v92 due to the higher sounding idle speed. Listen to the 8v71 "318" in the Kenworth, it idles different. It's called Kenworth Detroit 318. If it is an 8v71, it is a turbocharged engine.

[ClassicTVFan82]

The earliest turbo 8V-71s developed 350 hp.

[creedmty]

I think its sounds more like a 8v71 gmc and not detroit they have just a little diffenrence in sound they also produced them and apply those engines to 70's transit buses they have their gmc emblem on the intake manifold. a real 8v92 sound U can check on engine 33 ladder here on youtube and check the diff. between this and e-33 ladder just do a search.

[ClassicTVFan82]

This 8V-71 seems to be governed for 2,300 rpm, as determined by some of the transmission shift durations. Am I right, ladies and gentlemen?

[scottums5427]

and detroits dont have supercharges; they have blowers, and maybe a turbo

[Blitz350]

That's definitely an 871. I don't know though the automatic ruins it. We have an '82 Hahn with an 871 and 5-speed manual, and that sounds like a fire truck is supposed to sound. So does the truck in the vid just not as much.

[scottums5427]

Nahh thats definitly an 8V71

[b719]

That sounds like an 8V92 or 8V71

[Cooterrob]

I'm 100% sure that's an 8V92 Detroit 2 Stroke... I can hear the super charger, plus it's loud as sin. Detroit dominated the market up until the early 90's when Cummins came into play.

[Rboye]

I would really like to hear this truck pumping.

[Rboye]

My fire department used to have these Kenworth/Thibault pumpers and a Oshkosh aerial truck that sounded just like this.

[gajda1984]

they obviously had 2 stroke detroit diesels.

[gajda1984]

damn that sounds AMAZING! those jimmys make my adreneline go crazy they sound so sweet!

[rdnecksupplee]

Was this at the old station?

[gm1965]

Sounds like an 8V71 with an HT-70, classic converter-lock.

[ClassicTVFan82]

Pre-1975?

[ClassicTVFan82]

If the transmission heard here is indeed the six-speed HT-70 automatic, the operator seems to be only using the top four of the six gears (the bottom two are used only on grades).

[seagravefan]

The ride inside the truck brings back memories of our old '74 Seagrave P-cab pump.

[kalanike]

I know of a Airport Crash Rescue truck that sounds like this :)

[ClassicTVFan82]

This Hahn unit is probably known to be their legendary Custom pumper. The standard engine in most cases was the Dee Dee 6-71N (the 8V-71N and the huge Cummins NTF855 were options).

[seagravefan]

No. I would say 8V-71, just by the vintage of the truck.

[CHRISEVENS]

I would say 8v92, could have a replacement engine. It has that low bass sound & does not have that 71 "tick" at idle & has faster idle speed. By the way this truck sure goes around the same block a lot faster the Cargostar 6v53

[seagravefan]

If the Cargostar had an automatic transmission it would go around the block just as fast as the Hahn. Our old Seagrave pump could go from 0-35 MPH in 15 seconds and that's with a 6V-53T, 5-speed manual transmission, and a 6:1 rear on a 13-ton piece. By the way, ClassicTVfan82, I have seen at least a few Hahn custom pumps also with 6V-53's in them. If the 6V-53 was not the standard engine it was at least the "base" engine.

[scottums5427]

I dont know, it might. If it could, the only reason is because the cargo star is a lighter truck

[seagravefan]

Yes. The power-to-weight ratio would be about the same in both trucks.

[ClassicTVFan82]

Does that sound like an 8V-92TA and HT-740?