Clifford/Luvrbus

[Dreadnought]

Hey Clifford
You wrote: "I live North of Needles Ca and South of Laughlin NV, there is now way this summer"

I'm drawing a blank of anyone who can work on my MC5 and especially someone I can trust (through the collective knowledge here).

Gilberto of G & R coach says he no longer does this work, he put me onto two others (Sergio and Carlos) and both no longer do this kind of work. In addition, to get the bigger 8 row radiators will take about 3 months. I've got Luke of US Coach looking for the bigger squirrel cage fans for me and Sam to get the integral steering system kit.

So I'm thinking once the summer is over, perhaps I could convince you to do the work on my beloved MC5?
This is what I wanted done:

1)To fit the later Ross integral steering (rather than the older 'ram' style) onto my MC5.
2) Then also get some later MC9 style radiators (6G-1-9) 8 row bigger radiators. This will involve lowering the rad floors/ledges and re-routing some of the pipe work.
3) And finally fit the larger 12 inch squirrel cage fans (in liu of the current 10 inch), and make the aperture in the floor of the fans bigger (14 inch x 14 inches rather than the current 14 x7).

Let me know 

[Iceni John]

Why 8-row radiators?   Atlas Radiator in Santa Fe Springs CA made me a high-performance core to replace my old 6-row core, and I asked them if more than 6 would help.   Their answer was that anything over 6 rows doesn't yield any real benefit:  by the time the air has passed 6 rows it's so hot that it has negligeable heat transfer ability for any remaining rows.   That makes sense to me.   I did however have Atlas use dimpled tubes that slightly improve heat transfer by reducing stratification, more tubes (the old core had 57 rows of tubes versus the new core's 73 rows), a much denser fin count, and I enlarged its surface area by about 10%, the most I could while still fitting in the available space.

John

[Dreadnought]

It's what the 6g-1-9s had as standard (4 rows per radiator).

Long term goal is to fit an 8v92TA (although that's a way away)

[luvrbus]

Why 8-row radiators?   Atlas Radiator in Santa Fe Springs CA made me a high-performance core to replace my old 6-row core, and I asked them if more than 6 would help.   Their answer was that anything over 6 rows doesn't yield any real benefit:  by the time the air has passed 6 rows it's so hot that it has negligeable heat transfer ability for any remaining rows.   That makes sense to me.   I did however have Atlas use dimpled tubes that slightly improve heat transfer by reducing stratification, more tubes (the old core had 57 rows of tubes versus the new core's 73 rows), a much denser fin count, and I enlarged its surface area by ost I could while still fitting in the available space.

John

John those radiators in a MCI are about 17in W (core) and 30 or so inches tall not much you can do about the cooling area except add more tubes making it thicker and you add the larger squirrel cage to move more air for the added thickness, there is not much you can do for the surface area for cooling on a MCI .It is a lot different dealing with 2 radiators than a side mounted single radiator with a bladed fan 

[lvmci]

I added a 3rd radiator on the passenger side where the AC compressor was. Heavy duty truck radiator, rerouting cooling engine water that was accessed from the engine tube that were sending to the passenger heater core. Gilbert built me a frame, cut fresh air and grills on the curb side, put 2 24 volt fans with thermostats. It helped a lot climbing mountains. First you should make sure seals around the radiators are in good shape. Luke or Chris Newton may have the prefabricated seal mounts. I don't think a 5A would need anything more than a 6V92, that would be a great boost to power and cut down some from the 8V92 heat problems...

[TomC]

I don't know why anyone would switch to a 8V-92TA. I turbo'd and air to air intercooled my 8V-71. I only used 7G75 injectors for 375hp and 1125lb/ft torque. You can go to 90 injectors in the 8V-71 for 450hp and 1350 lb/ft torque which is just about the same power as a 8V-92. Good Luck, TomC

[luvrbus]

I don't know why anyone would switch to a 8V-92TA. I turbo'd and air to air intercooled my 8V-71. I only used 7G75 injectors for 375hp and 1125lb/ft torque. You can go to 90 injectors in the 8V-71 for 450hp and 1350 lb/ft torque which is just about the same power as a 8V-92. Good Luck, TomC

You still have the 2250 BTU per HP of heat rejection to deal with either engine ,the 450 hp 8v71 lasts you about 2500 hours ,the little 350 hp 6v92 will get you 1100 ft lbs of torque, there is no free lunch for HP increase. Like electronic engines or not the DDEC for two stroke engines are the best for heat control and torque