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780 V6 engine

I don't know much about this engine, so I'd like to know all about it.

How reliable is it? I have heard mixed views. Also how much horsepower does it have?

Thanks

Also, thanks for your help regarding the 780 turbo vs. 740/760 turbo, and the 940 16 valve questions. I really appreciate it.








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    Re: 780 V6 engine 700 1989

    The B280F is quite a good engine, but it has an undeserved reputation for being less than reliable because of its predecessors that required meticulous maintenance in order to live a long life.

    Earlier motors (B27 & B28) had problems with valve train oiling and poor camshaft hardening. They were also somewhat more difficult to service (the intake manifold had to come off to change a water pump, for example). That said, in other circles, such as Peugeot and Renault (and Delorean) these motors had a pretty good reputation. It is the yardstick that you compare the B280F to that has a lot to do with your opinion of the engine, and in the Volvo case that is the bulletproof B230!

    By the time the B280F came around the camshaft oiling issues were resolved. The bottom end of the motor is considered excellent-- often needing nothing until the timing chain needs doing at around 250K miles. The B280F also uses a relatively modern and reliable electronic fuel injection system unlike earlier incarnations that still used mechanical injection.

    On the down side, the B280F has solid valves that need periodic adjustment (unlike its 3.0l cousin that is found in the Eagle Premier). It is also somewhat prone to oil and coolant leaks after 150K miles or so. The aluminum block is prone to corrosion if the coolant isn't changed regularly, so this is cheap insurance. You will also discover that the tune-up parts are very pricey, although they are excellent quality. Try alloemvolvoparts.com for one of the most comprehensive online offerings of B280F parts around! There also aren't many performance upgrades for this engine.

    That said, the B280F is a very smooth high-revving engine. Its performance in a heavy car like a Volvo is adequate, and its longevity is good if you take care of it. The undeserved bad reputation of the B280F drives prices down, making the 760GLEs and the 780s w/v6 excellent bargains! I have a 760 now and when the time comes for me to buy another Volvo, I would certainly consider one!

    Good luck!








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      Re: 780 V6 engine ALL 1989

      Thanks guys.

      Could you tell me about how much the routine services cost for this engine?

      Also, question of my curiosity here, does the B280F's sound resemble a B230F's or no?

      Thanks.








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        Re: 780 V6 engine ALL 1989

        I can't tell you too much about routine service costs because I try to do as much as possible myself.

        Oil change-- use 15W40 (actually high detergent diesel oil)-- 6 quarts and a good filter with anti-backflow-- this means don't do JiffyLube if you like your car! Do it every 3000 miles (not 5K like the manual says!).

        Coolant changes every 2 years or you may develop corrosion problems...

        Cap, rotor, wires & plugs parts only-- $59, $20, $120 & $12-- yikes!

        Valve adjustment-- 2 hrs labor (have to move A/C compressor).

        All other things are a lot like the B230F...

        As for the sound-- it really sounds different than a B230F when you get above 4000 rpm-- some have compared it to the BMW six!

        Have fun!









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    Re: 780 V6 engine

    my '87 B280F is running fine with 130,000 miles on it. its never needed any major engine repair. the horsepower figure is 145 @ 5100 rpm. max torque is 173 ft.lbs. @ 3750 rpm. i've heard that the B28F engines were very bad and that the B280F is a major improvement. i guess it all comes down to maintenance. i just wish companies made perfomance parts for it. IPD basically has nothing for it.








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      Re: 780 V6 engine 700 87

      From what I've heard and read (agreeing with Lawr C.) before '87 the V6 was crap. My B280F has almost 124K on it and is quieter and smoother (and quicker) than my wifes Sable! No smoke, no leaks, very smooth. I like it better than the turbo b/c it has no whine. Maintenance is a HUGE issue, it needs prompt service and thank God I have all the history on my car! I heard that at some point Borla made "headers" for it! No luck in finding anything about that! I to wish there were more performance part's for it, custom made stuff is WAY expensive. The 780 period is hard to find performance parts for.

      John U.

      '87 780 V6 124K







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