supercharge - duramax? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 18 (permalink) Old 08-06-2006, 03:21 AM Thread Starter
 
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Wink supercharge - duramax?

I am probably going to make a fool of myself but us Aussies have been known to do so before. I have had chevs for 30 plus years big blocks, small blocks - carburetted, injected, naturally aspirated, supercharged - all petrol and the only turbo I had was a twin turbo 427 that came out of a race boat that I put into a 79 C20. Now I have my first Diesel 2004.5 Duramax with Banks 6 Gun / PDA, Technicooler, Airbox, Exhaust, and am hooked on Diesel Power. My question is - Is there a reason nobody seems to be Supercharging Diesels rather than Turbos? I would imagine EGT's would have to have a cooler advantage. Any ideas or am I really that stupid?:squish
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post #2 of 18 (permalink) Old 08-06-2006, 10:12 PM Thread Starter
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supercharge - duramax?

posting thread for 2nd time - anybody enlighten me on why we are turbocharging diesels not supercharging? - are there genuine reasons?
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post #3 of 18 (permalink) Old 08-06-2006, 10:20 PM
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Don't know myself. Maybe cost? Maybe because of parasitic loss?
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post #4 of 18 (permalink) Old 08-06-2006, 10:35 PM
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superchargers fall off on the top end turbos work better up there... only thing i got
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post #5 of 18 (permalink) Old 08-07-2006, 02:25 AM Thread Starter
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supercharge

Thanks for feedback. I can understand buying a truck with turbo, inlet and exhaust manifolds etc all remain as is and would have to be replaced with new parts ($'s) but all that aside I would imagine the supercharger would generate a lot cooler boost pressure and theoretically lower egt's. As for boost whether you would get enough I don't know but last 350 SBC I was running a Paxton Centrifugal at 21 ibs. I am more interested in power, regardless of where it comes from as long as it's in my duramax. welcome any thoughts
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post #6 of 18 (permalink) Old 08-07-2006, 03:21 AM
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you cant turn a supercharger fast enough, true, it may be better down low, but the turbo charger will spin its nuts off compared to the supercharger that is engine driven. That is a negative also, it takes power to turn that supercharger, the turbo is driven off exhaust.

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post #7 of 18 (permalink) Old 08-07-2006, 04:53 AM Thread Starter
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Thanks all for your comments and those contemplating making a fool of themselves like me. I have been talking to CAPA here in Aus. they are the experts in supercharging - tell me just cant make enough puff with s/c max out at about 25 with centrifugal blower - just where the turbo is starting to sing. So I will put this one aside for awhile. You dont know if you dont hava go. Thanks again
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post #8 of 18 (permalink) Old 08-07-2006, 11:17 AM
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Hey....all ideas are welcome here. You never know when something that sounds crazy ends up being the start of something great! Just ask DmaxalliTech about that.
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post #9 of 18 (permalink) Old 08-07-2006, 10:09 PM Thread Starter
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Thanks thebac - I dont feel so bad now. that was until I saw about this cummins making something like over 1000 ponies in a ford - guess I got a loonngg way to go
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post #10 of 18 (permalink) Old 08-08-2006, 01:57 AM
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With all the intelligent people that are working on it as we speak, the Dmax may be there sooner than we all think....
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