Rebuilding my S300G

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Rebuilding my S300G

Postby MrHorsepower » Fri Feb 06, 2009 9:36 pm

Hi all,

I am undecided if I should by a new Super B or rebuild an old s300 I have. I have 2 s300 to rebuild that have been sitting in the garage for a while. I also have 2 ht3b's that I have to rebuild. I am curious as to what you guys would suggest. I had plans of rebuilding the turbos for a twin set up, but feel that for my daily drive I would want just a s300 or a super B.

I figured the twin set up would be for a pulling truck in the future. Will the s300 light up as fast as a Super B?

The truck has a few mods to it: Full screw in 2.25 turns, minor adjustment on starwheel and smokescrew, bump timing 1/8, 97 Cummins all aluminum intercooler, Gen 2 lift pump regulated to 20 psi and 6x16 new era injectors. Head studs and HD head gasket is next also.

Thanks,

Bob
Last edited by MrHorsepower on Thu Feb 26, 2009 8:48 pm, edited 3 times in total.
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Postby randyswelding » Fri Feb 06, 2009 10:25 pm

bang for the buck id rebuild one of the turbos you that you already have.i ran the stocker to death and just got my industrial injection super 62 phat shaft turbo on today and man i could tell a big diffrence in the work truck.but id think rebiuld one and be good to go for a daily driver,do you know what sizes the ones you got are?
'92 D350 cab and chassy,pump turned up with 1/8 timin,coaltriann 6x16 sticks,htt manifold,asa intake cooler tubez,south bend 13" clutch rebuilt G360,ps cooler,industrial super 62 phat shaft turbo,weldin bed.
12 Chevy 3500ltz lifted, deleted, and bed with sae 300 ss hood for new rig
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Postby peobryant » Fri Feb 06, 2009 10:53 pm

6X.016's are huge. You're going to need at least a 62/71/14 for those.
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1972 Mercedes-Benz 220D, OM615 Diesel, 4 Speed Manual
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Postby ccoxva » Sat Feb 07, 2009 5:54 am

I would say the s300 will light just as quick as the B. I got one on my 96 dually and its pretty d n laggy! There sure hasnt been any porting done on switzers or BD's end. I looked in my ex housing flange and there was 1/4 in of metal you can remove :;-|:
1991 N/I 250
1996 Dodge 3500 Ex. Cab Dually 19.5's
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Postby Richie O » Sat Feb 07, 2009 2:29 pm

A super B is a S300. 8)
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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Postby ccoxva » Sat Feb 07, 2009 5:56 pm

BD said when I ordered mine that the changed the compressor wheel for faster spool up. (BS)
1991 N/I 250
1996 Dodge 3500 Ex. Cab Dually 19.5's
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Postby fergavs » Sat Feb 07, 2009 9:14 pm

The Super B turbo is a S300G. It is a 57/65/14 wastegated turbo with extended tip compressor wheel. This allows it to flow like a 60mm wheel but spool faster. This turbo will spool hard to 45psi, I loved mine.
1990 Dodge D350 Duallie 2wd, Piers ported, ringed,HD springed,ARP studed head,S300,PS IC,Custom EDM's,Max Spool 2 Cam,BD built 47RH auto,Meth,5" Exaust, AD 150, Punched VE Mod,2 Stage Nos,etc.
92 4x4 47RH,06 Turbo,6" with 40's on 20's,6" Stack
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Postby MrHorsepower » Sat Feb 07, 2009 9:34 pm

fergavs,
How do you like your bd special?

Would the s300g be a good secondary turgo with a ht3b or should I not go with twins? I personally would prefer to run singles, is there a compressor upgrade I should get for the s300?
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Postby MrHorsepower » Tue Feb 24, 2009 6:15 pm

I called in the serial numbers on my s300g and it is a 63.5/74/14 without extended tips.
I pulled it apart to take measurements and I came back with 63.75/73.91
Also the back of the compressor wheel is part number 168728. Anyone know the size of this wheel?
Will my daily driver/work truck be able to light this? Should I get my injectors 6x.016's or 6x.018's?

This turbo is going on the truck in my sig along with the new era's. Last two things to be done to the truck. Everything else is installed.
In Progress: '84 Chevy Silverado dually w/19.5 rims.
1st gen, New Eras, s300, 366, DennyT, piston LP, Pacbrake, 60lbs. springs, ARP studs, Snow Perf. stage II, '97 DR IC, 4" stacks.
NV4500, 14 Bolt Locker & Dana 60 Posi w/3.73's
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