Journal VS BB? - Competition Diesel.Com

ShaferDiesel · 01-15-2017, 02:55 PM

Hi guys,

I'm looking at playing with a turbo that I have been running for awhile, the engine setup is changing drastically and I thought I'd just give my turbos a little boost while I'm deep into things. Not having $3500+ to throw at a turbo right now, and having a full machine shop at my fingertips.... I am thinking of doing my own BB conversion to a journal turbo.

The turbo in question is a 88x118 comp with a 110x102 turbine. How much easier does a BB turbo light up? Is there any real noticeable difference at all or is it all ricer hype? I've close to doubled the airflow on this engine and I'm looking real hard at running this as a single and any thoughts would be appreciated!

*zfaylor* · 01-16-2017, 07:59 AM

I wouldn't waste my time. I am not impressed with ball bearing turbochargers whatsoever. A lot of marketing hype is involved with ball bearings. We see more low mile ball bearing units fail than anything. No customer has raved about spool up of their ball bearing units. The converted ones sound like a real treat.

What ball bearings do you plan to use that are rated to withstand 100k+ rpms?

ShaferDiesel · 03-19-2017, 04:08 PM

Why do I see ball bearings on the 2500HP pulling tractors then? Not knocking what you have said at all, just trying to figure this big HP **** out lmfao!

After multiple calls to multiple companies and not getting anywhere, I've settled on this little bearing from VXB, It's good for over 100K RPM, able to withstand the heat, I'm going to order two and try it out. We'll see what happens lol!

Next part I'm looking at is a billet compressor wheel, I've found this **** Billet Compressor Wheel Garrett GT4718 763739-0001 88/118mm 6+6 w/ Extended Tip | eBay but really want an 11 blade since I'm running this as a single, are there any 88x118 9.5mm bore 11 blades available?

nwpadmax · 03-19-2017, 04:54 PM

BBs are used on the tractors where the compressor creates so much thrust load that JB's get wiped out in one pass. The huge single chargers need them.

BBs will NOT tolerate dirty oil. Period.

ShaferDiesel · 03-19-2017, 05:04 PM

Has anyone ever run a separate filter and oil cooler on their turbos?

*Smokem* · 03-19-2017, 05:07 PM

Angular contact ball bearings are used for their increased thrust load capacity, whether it be to counteract load imbalance between the compressor and turbine, or oil film breakdown due to harmonic resonance while exceeding the supersonic threshold.

ShaferDiesel · 03-19-2017, 05:37 PM

oops forgot to post the bearing I am looking at...

https://www.amazon.com/D6803-17x26x5.../dp/B00DV5XAW6

nwpadmax · 03-19-2017, 06:53 PM

All of the turbo BBs I have seen, have a cage to separate the balls.

f6jbob · 03-19-2017, 10:27 PM

Johnny at Stainless Diesel has experience with BB turbos.

ENafziger · 03-20-2017, 10:40 AM

Have you looked at air bearings? Just an honest question...I have no idea whether they are a good application for this or not. But they do high speed well.

01-15-2017, 02:55 PM	#1
ShaferDiesel Name: ShaferDiesel Title: Way To Small! Status: Not Here Join Date: Nov 2012 Location: Linden TN Member`s Gallery Posts: 159	Journal VS BB? Hi guys, I'm looking at playing with a turbo that I have been running for awhile, the engine setup is changing drastically and I thought I'd just give my turbos a little boost while I'm deep into things. Not having $3500+ to throw at a turbo right now, and having a full machine shop at my fingertips.... I am thinking of doing my own BB conversion to a journal turbo. The turbo in question is a 88x118 comp with a 110x102 turbine. How much easier does a BB turbo light up? Is there any real noticeable difference at all or is it all ricer hype? I've close to doubled the airflow on this engine and I'm looking real hard at running this as a single and any thoughts would be appreciated! __________________ 92 Toyota 1-Ton, Detroit Diesel 3-53, 155 injectors, T04B98/TV8405 Twin Setup, Allison 1000 6spd, 4.10 Dana 70 with original toyota hubs brakes & wheels. Soon to be common rail injected!

01-16-2017, 07:59 AM	#2
zfaylor Name: zfaylor Title: Comp Diesel Sponsor Status: Not Here Join Date: Nov 2010 Location: P-TOWN!, Indiana Member`s Gallery Posts: 5,024	I wouldn't waste my time. I am not impressed with ball bearing turbochargers whatsoever. A lot of marketing hype is involved with ball bearings. We see more low mile ball bearing units fail than anything. No customer has raved about spool up of their ball bearing units. The converted ones sound like a real treat. What ball bearings do you plan to use that are rated to withstand 100k+ rpms? __________________ 2015 half ton heavy chevy 81 Fairmont LS project Many yard ornament projects... North American Turbo

03-19-2017, 04:08 PM	#3
ShaferDiesel Name: ShaferDiesel Title: Way To Small! Status: Not Here Join Date: Nov 2012 Location: Linden TN Member`s Gallery Posts: 159	Why do I see ball bearings on the 2500HP pulling tractors then? Not knocking what you have said at all, just trying to figure this big HP ** out lmfao! After multiple calls to multiple companies and not getting anywhere, I've settled on this little bearing from VXB, It's good for over 100K RPM, able to withstand the heat, I'm going to order two and try it out. We'll see what happens lol! Next part I'm looking at is a billet compressor wheel, I've found this ** Billet Compressor Wheel Garrett GT4718 763739-0001 88/118mm 6+6 w/ Extended Tip \| eBay but really want an 11 blade since I'm running this as a single, are there any 88x118 9.5mm bore 11 blades available? __________________ 92 Toyota 1-Ton, Detroit Diesel 3-53, 155 injectors, T04B98/TV8405 Twin Setup, Allison 1000 6spd, 4.10 Dana 70 with original toyota hubs brakes & wheels. Soon to be common rail injected!

03-19-2017, 04:54 PM	#4
nwpadmax Name: nwpadmax Title: Turbo Geek Status: Not Here Join Date: Nov 2006 Location: Out in the shop Member`s Gallery Posts: 3,128	BBs are used on the tractors where the compressor creates so much thrust load that JB's get wiped out in one pass. The huge single chargers need them. BBs will NOT tolerate dirty oil. Period. __________________ "What I said does equate too what can happen....Alote." Last edited by nwpadmax; 03-19-2017 at 04:56 PM.

03-19-2017, 05:04 PM	#5
ShaferDiesel Name: ShaferDiesel Title: Way To Small! Status: Not Here Join Date: Nov 2012 Location: Linden TN Member`s Gallery Posts: 159	Has anyone ever run a separate filter and oil cooler on their turbos? __________________ 92 Toyota 1-Ton, Detroit Diesel 3-53, 155 injectors, T04B98/TV8405 Twin Setup, Allison 1000 6spd, 4.10 Dana 70 with original toyota hubs brakes & wheels. Soon to be common rail injected!

03-19-2017, 05:07 PM	#6
Smokem Name: Smokem Title: Turbler Status: Not Here Join Date: May 2006 Location: Iowa Member`s Gallery Posts: 5,565	Angular contact ball bearings are used for their increased thrust load capacity, whether it be to counteract load imbalance between the compressor and turbine, or oil film breakdown due to harmonic resonance while exceeding the supersonic threshold. __________________ Infinite Performance

03-19-2017, 05:37 PM	#7
ShaferDiesel Name: ShaferDiesel Title: Way To Small! Status: Not Here Join Date: Nov 2012 Location: Linden TN Member`s Gallery Posts: 159	oops forgot to post the bearing I am looking at... https://www.amazon.com/D6803-17x26x5.../dp/B00DV5XAW6 __________________ 92 Toyota 1-Ton, Detroit Diesel 3-53, 155 injectors, T04B98/TV8405 Twin Setup, Allison 1000 6spd, 4.10 Dana 70 with original toyota hubs brakes & wheels. Soon to be common rail injected!

03-19-2017, 06:53 PM	#8
nwpadmax Name: nwpadmax Title: Turbo Geek Status: Not Here Join Date: Nov 2006 Location: Out in the shop Member`s Gallery Posts: 3,128	All of the turbo BBs I have seen, have a cage to separate the balls. __________________ "What I said does equate too what can happen....Alote."

03-19-2017, 10:27 PM	#9
f6jbob Name: f6jbob Title: Too Much Time Status: Not Here Join Date: Apr 2006 Location: western Wi. Member`s Gallery Posts: 1,153	Johnny at Stainless Diesel has experience with BB turbos. __________________ 2006 RCSB Dodge Goerend tranny and converter, Stainless Diesel twins and exhaust manifold, B&B intake manifold, T&C Diesel CP3, rail and dual prv, Hellman intercooler, Porting by Joker Fabrication, Isspro Performax gauges, AirDog fuel pump. Supported by Pure Diesel Power, Garmons Diesel Performance, Blacks Diesel Performance and above vendors.

03-20-2017, 10:40 AM	#10
ENafziger Name: ENafziger Title: Too Much Time Status: Not Here Join Date: Oct 2008 Location: Knoxville, TN Member`s Gallery Posts: 843	Have you looked at air bearings? Just an honest question...I have no idea whether they are a good application for this or not. But they do high speed well. __________________ 2006 Dodge 3500 SRW, 62/476 twins, Flux 2.5s, G56, Carli 2.65s, etc. Jer. 33:3 2003 Ford Excursion, '97 Cummins P-Pump, HX35/475 twins, studded and o-ringed, ZF6/271, forged Rickson 19.5s. 1991.5 W250, NV4500, Rickson 19.5s, HE351, long travel suspension build