Bearing Block
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 Tarot CNC Main Bearing Block For 450 SE GF V2 SPORT RHS4508802 $7.97 Time Remaining: 20d 20h 22m Buy It Now for only: $7.97 |
 Traxxas XO 1 KNUCKLES FRONT REAR CASTER BLOCKS w BEARINGS 6455 6439 6832X $0.99 (1 Bid) Time Remaining: 3d 20h 55m |
 Main Bearing Block For T rex 450 SE V2 LM450 017 $3.49 Time Remaining: 20d 20h 33m Buy It Now for only: $3.49 |
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 Helioption T REX 450 SPORT Integrated Main Shaft Block w Thrust Bearings $24.95 Time Remaining: 9d 2h 11m Buy It Now for only: $24.95 |
 SAVAGE X SS K46 ENGINE CASE bearings block crank case 861 HPI $5.50 (3 Bids) Time Remaining: 1d 20h 15m |
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 Serpent 802214 Bearing Block Front Lower Right 710 NEW $3.99 Time Remaining: 1d 10h 21m |
 CNC Main Bearing Block For 450 SE GF V2 SPORT S $9.47 Time Remaining: 6d 7h 43m Buy It Now for only: $9.47 |
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 Align T Rex 450 SPORT Metal Main Shaft Bearing Block $14.99 Time Remaining: 25d 32m Buy It Now for only: $14.99 |
 Rakon CNC Upper Main Shaft Bearing Block Set Red Blade mSR X $9.99 Time Remaining: 24d 13h 46m Buy It Now for only: $9.99 |
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 SAVAGE X SS K46 ENGINE CASE bearings block crank case $5.00 (1 Bid) Time Remaining: 16h 26m |
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 Blade BLH1654 Tail Drive Shaft Lower Bearing Block Blade 450 X New $3.98 Time Remaining: 29d 22h 26m Buy It Now for only: $3.98 |
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 Main Shaft Bearing Block For T rex 450 Pro RH45027 $3.99 Time Remaining: 1d 22h 4m Buy It Now for only: $3.99 |
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 SERPENT 733 TE REAR BEARING BLOCK SET $15.99 Time Remaining: 28d 20h 36m Buy It Now for only: $15.99 |
 Align T Rex 600 Bearing Block AGNH60031 $8.89 Time Remaining: 5d 16h 46m Buy It Now for only: $8.89 |
 Ofna Racing Bearing Block Brake Center 18011 BINB2 $8.89 Time Remaining: 9d 12h 53m Buy It Now for only: $8.89 |
 Serpent 808202 Front Bearing Block Right Impact 2 M2 $9.99 Time Remaining: 1d 10h 51m |
 KDS KDS 450Q Complete CF Main Frame Set Inc Bearing Blocks 1138 Q Silver $70.41 Time Remaining: 25d 4m Buy It Now for only: $70.41 |
 Align HN6105 600N Metal Engine Bearing Block $23.66 Time Remaining: 8d 23h 21m Buy It Now for only: $23.66 |
 Align T Rex 500 Bearing Block AGNH50050 $9.42 Time Remaining: 26d 16h 28m Buy It Now for only: $9.42 |
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 Serpent 808202 Front Bearing Block Right Impact 2 M2 $9.99 Time Remaining: 1d 11h 15m |
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 Serpent 808350 Rear Bearing Block Left 99 Impact M2 99 $12.99 Time Remaining: 1d 11h 16m |
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 RPM REVO Axle Carriers Steering Block Bearings $14.49 Time Remaining: 26d 16h 32m Buy It Now for only: $14.49 |
 E flite Blade 400 Tail Drive Shaft Lower Bearing Block Mount EFLH1454 NEW $1.89 Time Remaining: 2d 18h 16m Buy It Now for only: $1.89 |
 Serpent 808201 Front Bearing Block Left Impact 2 M2 $6.99 Time Remaining: 1d 10h 21m |
 Hawk Creation T Rex 450Pro V2 Mainshaft Trust Bearing Blocks $34.99 Time Remaining: 20d 22h 23m Buy It Now for only: $34.99 |
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 Thunder Tiger Lower Bearing Block E325 V2 TTRPV1229 $8.99 Time Remaining: 27d 9h 5m Buy It Now for only: $8.99 |
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 Serpent 808201 Front Bearing Block Left Impact 2 M2 $6.99 Time Remaining: 1d 10h 21m |
 Align 600Pro Metal Main Shaft Bearing Block H60217 $23.66 Time Remaining: 8d 21h 16m Buy It Now for only: $23.66 |
 Metal Main shaft bearing Block case Trex T REX 450 V2 $5.99 Time Remaining: 25d 4h 4m Buy It Now for only: $5.99 |
 EFLH1454 Tail Drive Shaft Lower Bearing Block Mount B40 $2.49 Time Remaining: 29d 17h 37m Buy It Now for only: $2.49 |
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 F01530 F H50075 01 Main Shaft Bearing Block500 heli $7.24 Time Remaining: 6d 1h 30m Buy It Now for only: $7.24 |
 Serpent 808201 Front Bearing Block Left Impact 2 M2 $6.99 Time Remaining: 1d 10h 21m |
 REVO Blue Axle Carriers Steering Blocks w Bearing RPM $24.99 Time Remaining: 19d 13h 46m Buy It Now for only: $24.99 |
 Align Metal Main Shaft Bearing Block Silver HN6068QF Trex600N $28.99 Time Remaining: 19d 9h 34m Buy It Now for only: $28.99 |
 HN7031T Metal Main shaft Bearing Block Trex 700 Original package HN7031 $19.99 Time Remaining: 7d 2h 35m Buy It Now for only: $19.99 |
 F H25077 Trex 250 Metal Main Shaft Bearing Block holder $4.88 Time Remaining: 21d 4h 53m Buy It Now for only: $4.88 |
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 NEW 46 SAVAGE X F46 BLOCK CRANK CASE ENGINE MOTOR BEARINGS 1491 $36.99 Time Remaining: 10d 22h 30m Buy It Now for only: $36.99 |
 ALIGN TREX 450 Metal Main Shaft Bearing Block $0.99 Time Remaining: 1d 20h 33m Buy It Now for only: $2.50 |
 Single 10mm Block Ball Bearing Shackle Lite Series RC sailboat model yacht $15.00 Time Remaining: 10d 16h 59m Buy It Now for only: $15.00 |
 Align T Rex 450 Plus Main Shaft Bearing Block H45175 New $11.80 Time Remaining: 26d 11h 54m Buy It Now for only: $11.80 |
 Align H45088 450 Sport Metal Main Shaft Bearing Block $13.54 Time Remaining: 29d 17h 59m Buy It Now for only: $13.54 |
 Rakon CNC Upper Main Shaft Bearing Block Set V2 Red Blade 120SR $14.99 Time Remaining: 24d 13h 46m Buy It Now for only: $14.99 |
 Traxxas 33 Jato Front Rear A arms Axle Carriers Hubs Blocks Hinge Pins Bearings $24.99 Time Remaining: 9d 18h 9m Buy It Now for only: $24.99 |
 ALIGN TREX 450 Metal Main Shaft Bearing Block $0.99 Time Remaining: 1d 20h 41m Buy It Now for only: $2.50 |
 Integy T7985B Aluminum Steering Blocks2 Blue +Bearings4 Bandit VXL XL 5 $18.38 Time Remaining: 28d 17h 21m Buy It Now for only: $18.38 |
 BLADE 450 Alum Tail Drive Shaft Lower Bearing Block BLH1654A $9.99 Time Remaining: 11d 58m Buy It Now for only: $9.99 |
 F01387 KDS1117 2 Main Shaft Bearing Block450C TREX V2 $6.63 Time Remaining: 18d 4h 56m Buy It Now for only: $6.63 |
 Metal Main Shaft Bearing Block For T rex Trex 250 Helicopter RH25077 $5.00 Time Remaining: 20d 20h 24m Buy It Now for only: $5.00 |
 NEW OFNA ULTRA LX2 28 FORCE BLOCK CRANK CASE BEARINGS 52288 52289 52900 $18.99 Time Remaining: 22d 21h 19m Buy It Now for only: $18.99 |
 BOLINK PARTS NIB Diff Thrust bearing w washers Steering blocks Front Bumper $9.81 Time Remaining: 5d 2h 45m |
 Tarot T Rex 450Pro V2 XL Bearing Mainshaft Blocks 1pc $12.99 Time Remaining: 1d 4h 58m Buy It Now for only: $12.99 |
 500 Metal Main Shaft Bearing Block for Trex T Rex Helicopter LH50075 $12.00 Time Remaining: 20d 20h 33m Buy It Now for only: $12.00 |
 HPI RACING SAVAGE FLUX X 46 BIG BLOCK BALL BEARINGS 8X16X5 MM 8 B085 $9.99 Time Remaining: 22d 15h 25m Buy It Now for only: $9.99 |
 ALIGN TREX 450 Metal Main Shaft Bearing Block H45027A $11.47 Time Remaining: 22d 22h 28m Buy It Now for only: $11.47 |
 Rakon CNC Upper Main Shaft Bearing Block set Red Blade mCP X $11.19 Time Remaining: 22d 16h 21m Buy It Now for only: $11.19 |
 SERPENT BEARING BLOCK REAR RIGHT 99 808351 GENUINE PART 3 $18.00 Time Remaining: 5d 13h 35m |
 Align T Rex 600N LE Metal Main Bearing Blocks HN6068Q 600 N $19.95 Time Remaining: 4d 9h 47m Buy It Now for only: $19.95 |
 MicroHeli Main Shaft Bearing Block w Thrust Bearing TREX 450 PRO PRO V2 $28.74 Time Remaining: 6d 12h 30m Buy It Now for only: $28.74 |
 X cell Main Mast Block w dbl Ball Bearings MA 120 12 $9.95 Time Remaining: 13d 18h 30m Buy It Now for only: $9.95 |
 E Flite EFLH1454A Tail Shaft Bearing Block Blade 400 $9.99 Time Remaining: 16d 16m Buy It Now for only: $9.99 |
 Align H25077 T Rex 250 Metal Main Shaft Bearing Block $10.95 Time Remaining: 9d 14h 20m Buy It Now for only: $10.95 |
Bearing Block
Basic Block Machine Work
Keeping with our format of dealing with real-world problems, we called on the services of veteran race engine builder Ed Pink to offer some expert essential information on basic block machine work, tips on how to spend budgeted funds, and what to look for when having machine work done by a shop.
Daydreaming and fantasizing about what could be, if money were no object, offers every racer a chance to relax and drift away from daily problems. But, reality has a way of creeping up like a silhouette against a blank wall. For the weekend racer, reality means getting the biggest bang for your buck each and every time a checkbook is flipped open.
We set our parameters for the story based on three different budgets: First, for the weekend racer with a very small budget, $500 was allocated for basic machine work on the block. The block we chose for Phase One is a used, two-bolt main, standard 350-cid Chevy. In Phase Two, we bumped the allowance to $1,000, aiming at the racer who may have some financial support from sponsorship. And finally, we kicked the ante up to $2,000 in Phase Three for the racer who has sponsorship on a full-time basis and has more funds available.
Headwork and special machining on aluminum or aftermarket blocks is not included. The blocks used in Phase Two and Phase Three is designated as a Chevy Bow Tie, however, what is discussed can be applied to any project block. According to Pink, the work illustrated in this story is based on the criterion of being essential to a quality final product. In other words, the work performed, in Pink's opinion, is all necessary to build a quality engine. All work is based on typical pricing (as of this writing) at a first-class machine shop. Cut-rate, backyard, or brother-in-law garage deals were discarded. "If machine work is not performed by a very high-quality shop, one [that is] in touch with the needs of the racer, using top-of-the-line equipment," Pink says, "then whatever money is spent on block preparation can be considered wasted." He continues, "So, if you walk into a shop, and the owner says, 'Ya just leave it, I'll handle it later,' just say no."
Phase One--We've Got $500
In Phase One, we have a used block and $500--the budget racer has little room for error. The block must be inspected, hot-tanked (cleaned), and Magnafluxed for cracks. Next, Pink recommends pressure-testing the block for leaks by placing the block (filled with air pressure) into a water reservoir. If the block is good--no leaks, no cracks--the next step is to bolt up the main caps (without bearings), measure for diameter size and concentricity, and align. Here comes the kicker! Because we are dealing with a $500 budget, the following scenario may be possible. In the rare occasion that the block in question checks out, align-boring may not be necessary. Remember, we are on a $500 budget. But, if the mains are out-of-round, then align-boring or align-honing will be mandatory. The usual cost for the honing or boring of the mains is $180. Once the mains are align-bored or honed, the centerline of the crankshaft is established.
Next, the block is decked. To deck a block, all four corners of the block are measured to the centerline of the mains (crankshaft) to determine if the block is square (also to set deck height). If the block is off, the head surface is machined until it measures the same, rear to front and side to side (0.001 to maximum tolerance). With the block square, the cylinders can be bored. In our Phase One example, Pink suggested that the block be bored 0.030-inch over. The cylinders are bored or power-honed using a torque plate. To be sure the bore size is correct, Pink suggests that at this time, you ask the machine shop person doing the job about which piston size to use in the engine and piston-to-wall clearances.
With the cylinders bored, we need to stop and do some calculations. We began with $500. The hot tank, pressure testing, and the Magnaflux test cost about $105 to $130. If the mains need to be align-honed (bored), add $180. Decking the block runs about $180. On the high end we have spent about $640; on the low end, $575. If the block did not need to be align-bored (honed), the cost would be $400 to $460. Throw in a few odds and ends (Welsh plug installation, fitting the cam bearing, and so forth), and you have spent the $500 budget plus a few extra bucks--but you have a quality basic block ready for assembly.
Phase Two--A Grand
With a fresh $1,000 budget, we can begin anew. In Phase Two we hot tank, pressure test, and Magnaflux as in our first phase, but this time there is no hesitation about align-boring/honing the mains. Also, the block, when decked, is surfaced on a mill using a special squaring fixture to ensure a perfect 90-degree angle to the centerline of the crankshaft. This fixture bumps the cost of decking/squaring the block from $150 to $190. Also upgraded is the cylinder-boring process. This time, the cylinders are power-honed (with the torque plate), using several different hone-grit surfaces (stones) to achieve near-perfect tolerances (rough cut is #133 stone, finish rough cut is $525 stone, fine cut is #625 stone, and finish cut (super fine) when running moly rings is #820 stone). The cost for this process is $180.
After the block is square--mains honed and aligned--and cylinders bored, Pink suggests opening up the main oil feed or gallery to the center three main bearings ($22). Next, Pink will drill and tap the oil restrictors to the lifters (restricting the oil flow to the lifters) front and rear of the block. What this means is that the holes are drilled and tapped, and then tiny set screws with drilled orifices are installed for a cost of $40. Next, the three front oil galleries have the soft plugs removed and are machined to accept 1/4-inch pipe plugs for $15. To regulate oil flow in the valley chamber, Pink drills, taps, and uses 1/4-inch pipe fittings to block the valley chamber oil drains (-8 fittings) for $15. Next, Pink machines, drills, and taps all core plugs (freeze plugs) for special "button head" screws. For $100, the screws are installed and safety-wired so they cannot blow out. Finally, it runs about $70 to fit the cam and install the cam bearings. If we hit our adding machine again, the price tag for our Phase Two block has reached $950. Add a few miscellaneous items and the budget is consumed.
Phase Three--Two Grand, Total
Now we have $2,000 to spend. Once all the aforementioned steps are completed, we begin the final stage with the installation of aftermarket four-bolt mains and aftermarket studs for $200 (labor only/no parts). If you use a Bow Tie block, then aftermarket four-bolt mains are not necessary. In this "premier" block, Pink machines an oil groove into the main saddles of the block for better oiling to the main bearing; that costs $115. If aftermarket four-bolt mains are used, the cost of align-boring/honing is $220. Notice that this is slightly higher than our tow-bolt mains on the blocks used in Phases One and Two. The reason? The aftermarket mains (steel) include rough or smaller bore sizes and must be machined to fit the cast-iron block--more work, more money.
Also, our Phase Three block receives an additional alignment procedure. In this stage, the cam holes in the block are actually align-bored and the holes fitted with a 0.030-inch-over cam bearing. This $250 step is not the same as simply fitting and installing cam bearings as found in Phase Two. Here, the cam bore and bearings are aligned perfectly, and this puts the cam and crankshaft in the same line. Also, the oil groove behind the cam bearing is enlarged on all five journals of the block (wider and deeper), which costs $160. With the oil capacity increased at the cam journals, the center main bores must be drilled for more oil capacity, so that's $22. At this point, Pink considers using special fixtures in boring the block to ensure that all of the cylinders are parallel to the crankshaft and in perfect line. The extra cost of this upgraded boring process is about $40. Another step is relocating the dowel pins to a correct position in line with the cylinder head, also $40. Lifter bores are up next. They are machined and aligned, sleeves are installed and machined, and oil galleries are drilled, honed, and deburred. Then the lifter bushings are honed to size (labor only/no parts) for $290. If the block must be converted from a wet-sump to a dry-sump oil system, the machining work is about $110. Suddenly, our $2,000 budget is close to being depleted.
Despite many more modifications engine builders make to blocks to help build horsepower and reliability, what we have given is a basic look at block machine work--at what must be done to have a fighting chance of building a strong engine. As a final footnote, Pink suggests that when you have a block machined--following the procedures explained here--talk to the shop and determine whether you can handle certain jobs at home. Labor-intensive jobs such as deburring, clearance grinding, redoing freeze-plug fitting, and grinding burrs from valley surfaces may be handled by the budget-minded racer. Remember, the work done to your block is only as good as the shop performing the task, so ask your fellow racers for recommendations. Be sure the shop you pick does race engine work and understands the needs of a racer.
About the Author
nbnyzj.com is a professional manufacturer and exporter of all kinds of Single and Multi Spring brick machine.We are a member of Building Block Association with excellent and advanced technology.You can buy cheap concrete brick machine and block machine.
Where to buy 8mm bearing blocks?
Hi, I need some bearing blocks to support an 8mm axle. Does anyone know a website where I can find some?
It really depends on the application but you could try this site and look at self aligning bearings
Y-Block Ford V8 cam bearing install
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