bottom end bearings

[xsublimefrekx]

hey guys i was just wondering where would you recomend to buy bearings for the bottom end. i need then to finish my motor and then i can finallt put it in the car. its a sr redtop. thanks

[PROJECTRB240SX]

KING BEARINGS SELLS THEM.... ITS THE SAME STYLE OF BEARINGS THEY MANUFATURER FOR THE RACE ENGINES.

[PROJECTRB240SX]

OR BUY STOCK BEARINGS AND GET THEM HPC FRICTION COATED.

[xsublimefrekx]

thanks alot guys i think i will look up king bearings cuz i did have the motor fully built so.

[S14-NEO]

mine is fully built as well and i am runnign clevite bearings.. just a thought.

have had no issues what so ever.

[180fan]

Ditto on the Cleavite. Using their t77's on mine.

[Nismo_Freak]

Cleavite makes a beefy bearing from what I've seen.

[PROJECTRB240SX]

just have them friction coated..... The king bearings come with a friction reducer embedded into the bearing.

This free's up hp, reduces heat, makes them last longer.

[Beemen550]

where is the best or cheapest place to get a set of clevite bearings?

[180fan]

Beats me, I got my set of trimetal T77's for I think 80 bucks (thrust, main, rod)?

[2_Liter_Turbo]

You can get Clevite bearings at Kragen (or Schucks/Checkers for other states). They only carry the cheaper ones in the store, but can order the higher end ones. It's not the cheapest place to get them, but the resource is there.

[DawgMode]

Nissan OEM bearings...the best u can go with

[xsublimefrekx]

i called one place about the king but they were out of stock for a few weeks so i guess ill try the ones mentioned. if you guys have a number of a place that might have them cuz i called a bunch of places and they all seemed like they had no idea what was going on.thanks again

i called nissan they guy had no idea what i was talking about. the motor didnt come up in the computer.

[180fan]

Which bearings do you need? I've a new set of OEM bearings still lying around in my garage. Let me know what grades you need.

[xsublimefrekx]

i need the rod ,main and thrust bearings.

[180fan]

The grade on those bearings?

[Nismo_Freak]

i need the rod ,main and thrust bearings.

Hahah...

Grades chief.

They are on the end counterweight on the crank, it's a series of numbers. You need to locate these before you order bearings so you can order the correct ones.

When you call Nissan you need to tell them you have a something like a 91 Sentra SE-R and you need the thrust bearings, main bearings, and rod bearings. They are all the same.

[xsublimefrekx]

the guy at the machine shop gave me colors. he said white for the main, brow for the rod, anf nothing for the thrust.

[Nismo_Freak]

the guy at the machine shop gave me colors. he said white for the main, brow for the rod, anf nothing for the thrust.

Nissan sells the bearings by grade... 1, 2, 3 etc.

[xsublimefrekx]

so i should go and ask the guy at the machine shope what grade instead of color

[180fan]

You have 4 bearings for the rods, 5 for the crank, and just the thrust. I have yet to see an entirely uniform crank and block and rods use just one grade of bearings on all the mains or on all the rods. Just not really likely unless the block's been line bored and the crank remachined and polished.

[xsublimefrekx]

everyone i have talked to about the bearings have never said anything about the grade of them. so should i just go with what they give me or what should i do.

[180fan]

Look at the bottom of the block and the front of the crank.

On the block: You'll see 5 numbers ranging from 0 to 3 or 4 I think. There might be a letter in the front but it's on a flat recessed part of the block. Write those down.

On the crank: From the front you'll see two sets of numbers, 5 at the top and 4 below the 5. The 4 numbers are the bearing grades you need for each of the rods. Left to right corresponds to rod 1 to 4.

grade school math: Take the two sets of 5 numbers and line them up so the left hand side numbers from the block are above the left hand side number from the crank. Now add downwards. Ex: block reads 12321 and crank reads 01232

so you'd get:main 1: 1 + 0 = you need grade 1 bearingmain 2: 2 + 1 = you need grade 3 bearingetc. Get it? Using one size bearing for a motor that needs different sizes unless it's been main had been line bored and the crank uniformly cut is a really really REALLY bad idea.

[compression]

Nissan OEM bearings...the best u can go with

AMEN!

You can get the thickness you need with the different OEM bearings available. The aftermarket guys only offer one thickness. Some poeple dont give a rats ***, and use the one thickness, even though it may not be the correct one to use.... then they pull then engine 2 months later due to a spun bearing.If you do it correctly, you would have the block and caps machined and the crank machined/polished to match the aftermarket bearings that your are using.

OEM bearings are great, there is no real good reason not to use them. As long as you keep your engine oiled, they will not fail.

ALSO, the COLOR mentioned above corresponds with a GRADE, nissan paints the different bearings with a color when they manufacture them, that way they can tell them apart. I forgot what color = what code, but the info is out there.

and also, IF YOU DONT KNOW WHAT THICKNESS BEARINGS TO GET....YOU SHOULD NOT BE REBUILDING YOUR ENGINE!!!Bearings require precise tolerances within the fraction of a thousandth. You dont just plunk in new bearings because some dude on a forum told you to use king bearings. Follow the instructions in the FSM religiously.

THIS IS ALL CLEARLY OUTLINED IN THE FSM, IF YOU DONT HAVE AN FSM, THEN YOU REALLY SHOULD -NOT- BE REBUILDING YOUR ENGINE.

good luck!

[xsublimefrekx]

thanks for all the help guys.

[PROJECTRB240SX]

Well, when I think engine build.... it normally includes line bore and crank journal matching. This makes everything uniform, balanced, and smoother running.

If you are not doing any of that stuff than why bother building at all?

[Nismo_Freak]

ALSO, the COLOR mentioned above corresponds with a GRADE, nissan paints the different bearings with a color when they manufacture them, that way they can tell them apart. I forgot what color = what code, but the info is out there.

The last ~50 bearings I have purchased from Nissan for various engines did not have any markings whatsoever on them.

[180fan]

Alan, seriously? The bearings I've gotten through dealerships had colored dots on the profile of the bearings.

[xsublimefrekx]

thats what i was told and thats what i have seen before so thats why i was going to go with the color.

[180fan]

Grade is what you need. You'll find color based on the grade. Different colors = different grade. I posted up a few of the different colors and grades in the parts thread.