| Author | Message | ||
| FAST FRED (Fast_fred)
Registered Member Username: Fast_fred Post Number: 1284 Registered: 10-2006 Posted From: 99.153.142.249  Rating: N/A |
We will be upgrading the stock radiator CORE , to take the extra heat from a 330Hp series 50 from the 6-71 the bus started life with. WE hope to keep the stock location and size and install a "better" core. Does anyone have a site with a worksheet I can play with? 3 pass , 4 pass 5, pass , dimpled tubes , aluminum , copper loads of choices to be noodled. TIA FF | ||
| Justin Griffith (Justin25taylor)
Registered Member Username: Justin25taylor Post Number: 58 Registered: 4-2007 Posted From: 67.67.221.19 Rating: N/A |
I for one would love to see this if it is available! | ||
| Tom Christman (Tchristman)
Registered Member Username: Tchristman Post Number: 241 Registered: 1-2006 Posted From: 66.218.33.156 Rating: |
Fred- quite possibly, your 6-71 radiator maybe enough to cool a Series 50 since it is so much more fuel efficient. I know when Grayhound converted their 6V-92TA's to Series 50, they removed one radiator and replaced it with the air to air intercooler. If you're going to replace the core, go to a 6 row with serpentine fins, and I bet you'd be alright. Good Luck, TomC | ||
| FAST FRED (Fast_fred)
Registered Member Username: Fast_fred Post Number: 1285 Registered: 10-2006 Posted From: 99.153.142.249 Rating: N/A |
"your 6-71 radiator maybe enough to cool a Series 50 since it is so much more fuel efficient" Yes , BUT , the DD was at best 235 hp with a huge part going into the cooling ,and out the exhaust the extra 100hp (50% more) will probably eat up any difference in efficiency . Too much cooling sucks as engines only need so much cooling ( about 20deg F ), and over cooling returns water too cool so the engine temp, and efficiency both drop.There goes 14 mpg! On our lobster boat (6-71)the 2 - 21 ft pieces of 1 1/2 pipe, keel cooler ,over cool the engine , demanding a bypass thermostat to feed tempered (part cool part engine coolant returned) to keep the temp from droping to 160F each time the stock thermostat lets water out of the engine. There is an air to air intercooler , but the results should be better if its cooling with mucho air moving , not blocked by a wall of copper.And a big tranny cooler for the ZF retarder. FF | ||
| George M. Todd (George_todd)
Registered Member Username: George_todd Post Number: 1096 Registered: 8-2006 Posted From: 99.56.240.204 Rating: N/A |
That's what they make thermostats, shutters, hydraulic fan drives, and fan clutches for. There's no such thing as too much cooling! G | ||
| Tom Christman (Tchristman)
Registered Member Username: Tchristman Post Number: 242 Registered: 1-2006 Posted From: 66.218.33.156 Rating: N/A |
When Freightliner had the Series 50 in the FL106, it had a 950 sq/in radiator. Course that's front engine not side radiator. It is the only truck application of the Series 50 that I know of. Good Luck, TomC | ||
| FAST FRED (Fast_fred)
Registered Member Username: Fast_fred Post Number: 1287 Registered: 10-2006 Posted From: 99.153.142.249 Rating: N/A |
"Truck had a 950 sq/in radiator." The donor was 16.5 x 34 ,561 sq in. The VL had 25x27 ,675 sq. The donor seems to be a 5 row core , 2805, passes x area. The VL is 4 pass or 2700, pass x area, As a coach I assume the Horton will be on low much of the time , with high aviliable as needed. I will steal the idea from my 06 Sportscar and install a full width mud flap across the rear . This might help keeping the fan HP as low as can be .Seems to work for GM. FF | ||
| RJ Long (Rjlong)
Registered Member Username: Rjlong Post Number: 1712 Registered: 12-2000 Posted From: 71.195.124.20  Rating: N/A |
All - "I will steal the idea from my 06 Sportscar and install a full width mud flap across the rear." Just to clarify Fred's remark, this is NOT a mudflap hanging off the rear bumper. GM installed these across the bulkhead behind the rear axle, to create a low-pressure area under the engine, which helps draw heat out at speed. A little more of a challenge with a "T-drive" layout, but still doable. FWIW & HTH. . .  | ||
| FAST FRED (Fast_fred)
Registered Member Username: Fast_fred Post Number: 1289 Registered: 10-2006 Posted From: 99.153.142.249 Rating: N/A |
GM installed these across the bulkhead behind the rear axle, to create a low-pressure area under the engine, which helps draw heat out at speed. The most I have seen were recycled conveyer belt, which held up to the road debris. I am contemplating adding a front "Air Dam" as it might help the airodynamics ? 50+year old bus with modern NASCAR tricks? FF | ||
| R.C.Bishop (Chuckllb)
Registered Member Username: Chuckllb Post Number: 1365 Registered: 7-2006 Posted From: 69.96.198.54  Rating: N/A |
The conveyor belt thing was done with the Crowns (well, mine for sure) as well...one directly behind front wheels (engine mounted amidships) and another directly behind rear tandems...that mounting most probably has nothing to do with air flow,rather to keep road debris from damaging trunk floor, etc. RCB | ||
| Jim Wilke (Jim Bob) (Pd41044039)
Registered Member Username: Pd41044039 Post Number: 548 Registered: 2-2001 Posted From: 184.0.3.170  Rating: N/A |
Its part of the air flow science on the GMs. |
