Calling out Brady at II about silver 62 facts.

[EBung]

How do you like the BD twins?

 

[Forrest Nearing]

you sure they didn't send you a silver66? a silver 62 will light up a little later than an sps62, but the compressor sound will be exactly the same, and the spool shouldn't be THAT different!



spool up between an sps62 and a silver66 is a 500+rpm difference though

01-16-2009, 10:12 PM #57 (permalink)

rivercat

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Join Date: Mar 2005

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Old Reader's Rigs Gallery



time to wake this one up and see what other people think about these turbos





I know I have a 3rd gen, so we have different results.



My experience was... Upgraded from my stocker to an SPS62, managed to tow a little, it was great. Street manners had a very slight lag over stock, but nothing I could not live with, really, really liked the turbo.



My fondness was short lived, with just under 1200 miles on the charger, I started spewing oil out my exhaust and put a film of oil through all my boost hoses and intercooler.



I had a couple of heart to hearts with Brady at II, he sent me a new turbo, I sent him the old/new one. I thought this was cool, I was able to change them out on a Saturday with only a single day down time. (Brady later told me the thrust bushing on the compressor side went south??)



I forgot to mention, I also upgraded to a Silver62. This was a mistake on my part, It was laggy!



After several more mods(trying to get the Silver to spool), full 4" turbo back exhaust, intake horn, larger injectors, it still would not spool as quick as the SPS62. Towing was awful, darn near ruined my vacation, had to keep backing out of the throttle and constantly shifting down, just to make it over little humps on the interstate and keep my egt's under 1400. And I tried alot of different tunes. This is not a towing turbo, IMO.



Now, as a street turbo, empty truck... when the Silver would light, after fogging an intersection, OMG! It was a rocket, even on the freeway at 65mph, that turbo would light and just absolutely slingshot you down the road.



To this day, I miss it's screaming whine. This is my opinion/experience of these chargers.

 

[JJPage]

How do you like the BD twins?

So far I am very happy, have not had a chance to tow my 5vr yet, but I am confident they will shine.

you sure they didn't send you a silver66? a silver 62 will light up a little later than an sps62, but the compressor sound will be exactly the same, and the spool shouldn't be THAT different!



spool up between an sps62 and a silver66 is a 500+rpm difference though

I compared it side by side to the SPS62, other than the turbine wheel with the clipped fins, and the polished housing, they appeared to be identical. I did not mic the compressor wheels, and I suppose it could have been a 66 wheel, but doubtful. It would light about 1450/1500 rpm.



If it was a 66, Jonathan Rayce from Cummins Forum is a happy camper.



Jess

 

[Forrest Nearing]

ahh, when you said the sound from the silver series was a lot louder, that threw me... going from a 71mm turbine to the clipped 74mm yielded a lot less tubine sound out of the tailpipe, and if the compressor wheel is the same, the sound there is going to be the same

 

[BILLVO]

After about 2 years on my silver 62 the above statements are the same with me. Not a good towing turbo at all. At least not with an auto with 3. 54 gears. I believe a manual transmission and or 4. 10 gears would make this turbo shine while towing but as a street turbo its pretty good. I wish I would have kept the wrong turbo they sent me the sps62 from the get go as they seem to put out better torque than the silver 62 does. The silver 62 makes just a bit more hp but not enough to offset the lack of towing performance in the lower rpm range "anything under 2k rpms".



I have drag raced it and I do a lot of sled pulling and I can say the same as it really shines on the track but it is a slow lazy pig while trying to get the sled rolling. It likes fast free accelleration not lugging.



As far as EGTs it is super as a street turbo never gets past 1250 wot for as long as you want to hold it there but while loaded it will see 1300-1400 regular in OD so I wind up towing with OD off most times and eating the fuel consumption compromise.