RTS bus, 6V92TA retrofitted for EPA

[Adarian]

It appears that I may be getting an RTS bus to replace the flxible that was damaged in an accident while sitting in storage.
1990 model with a 6V92 that was retrofitted to meet epa standards. What does that mean?

What to look for when inspecting an RTS bus?

[Highway Yacht]

I'm not an expert on RTS buses by any means but I do have one. They are super great driving buses. Built like tanks. and make very nice conversions if you are sure you want a transit. I think in laymans terms, the retrofitted to meet EPA regulations is just a way of saying they have modified the engine to produce less emissions which means they have robbed it of some of its horsepower. There is tons of info out there on the RTS and lots of people that are experts. I've seen post on this board and other boards by a guy name Pete who has probably the most info and experience on the RTS buses. I'm sure he can answer your question. Good Luck!!!

[luvrbus]

EPA engines have different liner ports,injectors,timing,cams,oil ring expander's and most of the time the air box drains are tied into the oil pan couple of other items but I forget what they are.   


good luck

[buswarrior]

My guess is that it has been retrofitted with some sort of diesel particulate trap in the exhaust.

happy coaching!
buswarrior

[Iceni John]

EPA engines have different liner ports,injectors,timing,cams,oil ring expander's and most of the time the air box drains are tied into the oil pan couple of other items but I forget what they are.

How do these engines differ from my 6V92TAC?   My 277 BHP engine is the Californicated version, presumably with healthier organic exhaust and a sunnier disposition.   My slobber tubes are open to the ground (to the chagrin of the RV yard owner  -  I told him their black oil is just a less solid version of asphalt).

John

[RTS/Daytona]

HI

I'm Pete RTS/Daytona - I've had an '89 35' / 102" wide - 6V92TA EPA - RTS model 06 (just like yours) since '02

Here's pictures of what my FINISHED conversion looks like -->  http://community.webshots.com/user/hawk_ii

You should join this RTS specific B/B - Very Very helpful info --> http://autos.groups.yahoo.com/group/RTS-bus-nuts/

The major problem would be if it came from a HEAVILY SALTED AREA - Altough the RTS is 95% Stainless steel the frame rails are STEEL
and right where the rear air bags get mounted they doubled the steel frame - this left room for salt to get in there and rust the frame rails

Get the serial# and check here for where the bus spent most of it's early life--> http://www.omot.org/roster/RTSII/index.html

any other questions - call me  386 - six seven two - zero five 71

My RTS is a California (no rust) RTS with a EPA engine - Many RTS 6v92ta's were rebuilt to tougher EPA standars by Englehart or Matthey's - the modifications included a Catalytic converter and new ceramic liners and heads?? -

My EPA 6V92TA can get almost 10 MPG if driven between 62-65  - (I replaced the original 5.13 rear with a highway geared 4.10 rear- about $2500 )

[luvrbus]

Going to be hard to guess without knowing what level of EPA they tried to upgraded too, the standard CA engine has been around for years.



good luck

[RTS/Daytona]

Look on the valve cover that is accessable after you open the rear cover - look for the EPA RETROFIT # and search thru internet

with that# and the words transit and epa

bet you'll find that this is the spec for your motor-->

http://www.epa.gov/EPA-AIR/1999/February/Day-26/a4828.htm

P.S. - I NEVERR seen a transit RTS with the slobber tubes directed to the oil pan -  Detroit had issued a warning about doing this years ago

most RTSs have a CATCH device - behind the  bumper that the slobber tubes are directed too - The mechanics were suppose to open the drain Nut on the bottom of this device and drain any oil at every oil change - forget to do it and you'll find a HUGE STREAK of oil when you make a slow turn and the bus tilts going down a driveway - ask me how I know !!!

[Geoff]

I wouldn't touch a DDEC or an EPA RTS bus.  There are plenty of early eighties RTS buses around that have mechanical governors and federal cams.  These engines are easily boosted to 350HP with the installation of 9G90 injectors.  I know where there is a '82-'83 40' RTS with a basic conversion for sale, asking price is 20k.  It is located in Vallejo, CA.  Drop me a PM if you are interested.