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8V71 Detroit Engine

Home > Discussion Forum > Bus Conversions - Intercity

Email Author email Terri Falk  Reply to Message reply to message  Post New Message post new message      search forums
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8V71 Detroit Engine Terri Falk 9-16-04  
Does anyone know anything about the dependability and available to service the 8V71 Engine? Are they expensive to work on? We are thinking about buying a 1978 MCI which was converted in 96. We have had a few negative feedback about this engine, but it was from truckers. Is it hard to find people to work on them? Please help!
Re: 8V71 Detroit Engine Scott 12-2-09  
I have a 45k mi 8v71 in an MC9. I am salvaging it out. If anyone needs anything from this bus you can contact me at 417-272-1972 or nextlevelshows@yahoo.com
Re: 8V71 Detroit Engine RICHON 11-20-04  
HI!MARK! THANK YOU FOR YOUR HELP!CAN I
USE C60 INJECTOR INSTEAD OF N60?
Re: 8V71 Detroit Engine sandra philips 11-25-04  
Hello sales,
I am the sales manager of PHILIPS STORES NIGERIA LIMITED.I visited your site where i found products that are of immense quality that my store deals with.i will like to order for them.pls acknowlege by responding to this mail urgently so that i can order for the products needed.
I will be awaiting your favourable response & i will like to know if you do accept master & visa cards for payment.
Regards.
sandra.
Re: 8V71 Detroit Engine Bill Fielder 11-1-04  
Does anyone know the sump capacity of the 8V71T?

Thanks, Bill.
Re: 8V71 Detroit Engine kenneth winn 10-10-04  
I need to overhaul my 8v71n to 8v71T can someone give me any pointers and where to find parts.

ken
Re: 8V71 Detroit Engine Kevin 9-21-04  
The older detroits are infamous, but not actually bad, they have no more chronic problems than any other diesel, but being pre electronic injection, they are not a great performer,compared to newer units. 8V71 Inframe $1410.48 for the kit, an international dt 466 would be 1010.63
so parts cost is higher,but I would not hesitate to buy a bus with a detroit. a check by a qualified deisel mechanic would be wise.
Re: 8V71 Detroit Engine Jim McNaul 9-25-04  
8V-71's are still manufactured by Detroit Diesel today. They are probably one of the most widely used diesels in the world in their horsepower class. They are a design that was introduced in the 1940's, so are naturally not up to modern noise, emission, and fuel economy standards. The most common HP rating for the 8V-71 was 318 HP (at sea level. They suffer from altitude just like a naturally aspirated gasoline engine. They ARE considered naturally aspirated even though they have a gear driven rootes type positive displacement supercharger on them. The displacement of the 'blower' is exactly the same as the displacement of the engine, so consequently no boost pressure is developed. There is no provision for 'overdriving' the blower. There is a turbocharged version of the 8V-71 which is called the 8V-71T. These do not suffer deration due to altitude and are much quieter. 8V-71 means 8-cylinders with 71 cubic inches each, or a total of (8 X 71) 568 cubic inches. This is not realy very big when you consider that almost all big trucks are powered by 855 or 893 cubic inch engines. But an 8V-71T in a motor coach is a hot son of a gun! Greyhound busses routinely got 500,000 miles between overhauls on these engines pulling 35,000 lbs gross weight. Most truckers are dealing with 80,000 lbs weight so consequently get considerably less longevity and less performance from an 8V-71 than they do other larger engines.
Re: 8V71 Detroit Engine Gary Norton 3-31-06  
Can you change a 8V71N into a 8V71T, and for how much?
Re: 8V71 Detroit Engine giulio 10-26-04  
I would like to know the dry wheight, in kg, of e 8V71T engine, without gearbox, at the maximum power rate (530hp). Can you help me?
Thanks and regards

Giulio
Re: 8V71 Detroit Engine richon 11-8-04  
8v71 injectors c65 n60 n75 m95,who can
tell me what is it means?thanks!
Re: 8V71 Detroit Engine Art 3-23-09  
I have an 8v71 in a bus 1974(Prevost) no telling how many miles since overhaul, still runs great a gallon of oil every 1300miles like clockwork sounds good when cold,my only complaint is power.
is there any way to know if the eng has been upgraded to 318 hp; is there a manual to walk me through an upgrade or shoukd I just learn to live with it?
Re: 8V71 Detroit Engine Ernie 6-5-09  
AN 8V71 WEIGHS 2496 ACCORDING TO CENTRAL CALIFORNIA POWER.COM CHECK IT OUT GOOD STUFFsh38m
Re: 8V71 Detroit Engine Don 2-1-08  
I have a 1983 mci 9 with a 8v71 natural. I would like to change it to a 8v71 turbo. is this doable?
Re: 8V71 Detroit Engine George M 1-13-09  
Hello, I am trying to install a block heater for my 85' 8V71N thats in a fire truck. I dont see any ports to thread into. Anyone familiar with which side this should be on?
Re: 8V71 Detroit Engine antonio 12-19-08  
Do someone can tell me whats this engine weight ???

Thanks a lot
Re: 8V71 Detroit Engine rainwardt 7-2-08  
Any info about how to check part list 8V71 engine without serial number.Thanks and best regards.
Re: 8V71 Detroit Engine Bill 8-1-08  
I have an 8V71,1968, the engine runs great, no black smoke, but blows oil all over my tow car. No oil in tail pipes, and have checked everywhere, no leak that I can find. It goes through 2 gal. every 200 miles, any Ideas?
Re: 8V71 Detroit Engine perry 9-21-08  
Need to know the weight of a 8v-71 detroit as i will need to haul it in a ford f-150 pick-up.
Re: 8V71 Detroit Engine John 10-13-09  
I have a 1981 freightliner dump truck running an 8v71 however I dont know if the piston are 2 piece or 1 piece.

Its also blowing oil all over the place and whitish blue smoke.
Re: 8V71 Detroit Engine Capt Dave 8-12-09  
I have a friend who owns an old navy boat with a single 8v71 with twin turbos.I need some advice.The turbos are spinning up fine but nothing is happening.Please call me or e-mail 251-421-3698 Capt Dave.
Re: 8V71 Detroit Engine john clark 11-6-07  
Have 8v71 in a 1973 mdl 10 eagle bus i have a bad oil leak over starter looks like it is cumming down the head were it bolts to block jus under manafold then runs back and drips down the sending unite by the oil filer cap but cant tell exactly were it is comming from. smokes just a little on start up but dont last long runs great my last time out i went 2400 miles and used over 2 gal of oil using bp 40 wght. could it be compresser or anything othere then the block ty john l clark
Re: 8V71 Detroit Engine Ariel Herrera 8-25-05  
I need 20 8v71 used detroit engine. I'll re-build the engine.
Thank You.
Re: 8V71 Detroit Engine mark 11-8-04  
Those are the amount of fuel the injector ic capable of injecting into the cylinder. Bigger # =more fuel=more horse power
Re: 8V71 Detroit Engine Pascal 12-1-04  
Hello, I was reading with interest your informations. Perhaps somebody could tell me how much the diesel consumation would be for this tipe of engine on a boat. It is a 8V71 Diesel without turbocharger from 1969. I need this information for the transport of the boat. I would apreciate your response. Thanks, Pascal
Re: 8V71 Detroit Engine HENRY MCCARVER 1-1-06  
DID YOU FIND THE ENGINE THAT YOU NEEDED
THANKS HENRY
Re: 8V71 Detroit Engine jkcase1570 11-13-05  
I have a running 8v71 with a blower currently in a truck. email with questions.
its_me_at_miami@yahoo.com
Re: 8V71 Detroit Engine fuel system jimmy 1-30-06  
Any info on to adjust the fuel rack?.
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