41 PC Turbo Replacement


R

Ralphv

New member
I?m looking for suggestions on a good place to purchase a pair of new turbos for my Cummins 6cta8.3 engines. Or a reputable rebuilder in the north east. Reason for replacement is substantially corrosion on the exhaust side of the turbo from the poor exhaust design. TIA for any help or suggestions
 
A recognized guru on Cummins engines is Tony Athens. His website sbmar.com has replacement parts and lots of good technical articles on Cummins engines. No affiliation just a happy customer.
 
I agree with Comodave. I ordered a few parts from them with excellent service. I just purchased a remote oil filter placement from them.
 
Hi Ralphv,
I was in the same situation last year looking for replacement turbos. I have a pair of 1998 6cta8.3 Diamonds with about 1700hrs. The turbo on one engine developed an exhaust leak; the bottom 2 bolts on the turbo to exhaust elbow rotted away and the housing was too trashed to have machined. It was impossible to source new turbos. Sea Board Marine didn't have one, Cummins was back ordered at least 9 months and everywhere else was waiting for their stock to be replenished with no indication when they'd have one. I found a Diamond Diesel out of Oalkand, CA that had a new housing and cartridge and the could rebuild it. I went that route at a cost of $2700.00 with all gaskets required to reinstall and the turn around was fast. I was back on the water within a week. At the same time I placed an order with MD Distributors https://www.mddistributorsstore.com/holset/3538624h/new-water-cooled-turbocharger for a new Holset to replace the other side at a cost of $1730.00. They had been back ordered but I was on the top of the list when they became available. It ended up coming in a month later and I proactively replaced the remaining side.

I added manifold side, pressure boost gauges to both engines so i could monitor and compare the too. The difference between the old turbos and the new turbos is amazing.

I see the price on MD Distributors website went up a about $100.00; but it is still a bargain compared to buying thru Cummins. I can tell you first hand that the Holset turbo is exactly as the original.
 
California40 said:
Hi Ralphv,
I was in the same situation last year looking for replacement turbos. I have a pair of 1998 6cta8.3 Diamonds with about 1700hrs. The turbo on one engine developed an exhaust leak; the bottom 2 bolts on the turbo to exhaust elbow rotted away and the housing was too trashed to have machined. It was impossible to source new turbos. Sea Board Marine didn't have one, Cummins was back ordered at least 9 months and everywhere else was waiting for their stock to be replenished with no indication when they'd have one. I found a Diamond Diesel out of Oalkand, CA that had a new housing and cartridge and the could rebuild it. I went that route at a cost of $2700.00 with all gaskets required to reinstall and the turn around was fast. I was back on the water within a week. At the same time I placed an order with MD Distributors https://www.mddistributorsstore.com/holset/3538624h/new-water-cooled-turbocharger for a new Holset to replace the other side at a cost of $1730.00. They had been back ordered but I was on the top of the list when they became available. It ended up coming in a month later and I proactively replaced the remaining side.

I added manifold side, pressure boost gauges to both engines so i could monitor and compare the too. The difference between the old turbos and the new turbos is amazing.

I see the price on MD Distributors website went up a about $100.00; but it is still a bargain compared to buying thru Cummins. I can tell you first hand that the Holset turbo is exactly as the original.
Click to expand...

Hey Mark,

When you say the difference between the old turbos and the new is amazing, what do you mean? In what specific way: power, responsiveness, temps, boost, what?
 
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