The Graded Bearing Debate ? Please Help Answer

[StevenCJR31]

Im not saying that $1500 isnt much for me personally, but some out there who spend the big $ on parts for rebuilds then a new crank is the least of their problems. Go look in the for sale section and theres a few threads with parts in there like $13K for a block or $11K for a head...add each part of that into a whole setup and the $1500 for a crank suddenly seems insignificant.

agreed. . .its not cheap going fast!

[Beer Baron]

yeah like I said $1500 is not expensive when doing a build with top $ parts. look at the price of the other gear and then decide if using a used crank which is potentially bent is worth it? of all the used RB26 cranks i've seen more were bent than those that were straight. I know a number of people who've bought used cranks only to have them checked and find them unusable and then do it again a couple of times before getting a good one. it doesn't take many used cranks or machining bills to get to $1500.

anyway for the original poster who wants some advice I will give some of my own experience.

fit some aftermarket valve springs. even tomei type A (type B are much better and worth the extra $). that will allow you some headroom if you want to rev and personally I would NEVER fit aftermarket cams with stock springs.

secondly, don't use the tomei pump with your stock capacity sump. yes you have it baffled but the tomei pump flows so much more oil than standard if you run high RPM for any decent length of time you are going to pump it dry. even with the 1.2mm restrictor oil will be pumping up many times faster than it can return to the sump.

consider fitting a larger sump to cope.

the other stuff all sounds fine and good choice on the tomei rods, they are excellent. there's no problem running 500-600hp (engine) on N1 pistons and rings either as long as it's tuned well.

if you do want to run some decent power and boost though I'd consider using a tomei 1.2mm gasket (or other MLS gasket but you already have lots of tomei gear so I suggested that one). even buy the tomei gasket kit. it comes with a lot of the other gaskets you'll need.

good luck.

[ZimNismoBoy]

Hello Beer Baron and thankyou for that info.

From what i have gathered from doing research these past few days it looks like im going to go with a Nissan subassembly assembled and strip and recheck it as the cost of parts alone is coming up to more expensive before assembly by 500 usd or so.

So thats 500usd more for a set of tomei rods included in parts alone.

Im assuming that Nissan has a greater mark up on parts then on a complete whole sub assembly unit.

never the less i wont need to check much accept check that they have cleaned the block correctly that means stripping the motor.

Then checking the clearances correct on mains and big ends etc .

Reason i say this is because there has been a number of people who have bought complete engines from Nissan and checked the clearances etc and found problems, as well as with the R type rebuilt blocks that also have had loads of issues including the engine i bought from a company called Flatwell racing, they supplied me a engine rebuilt from nissan and it was a dud.

So be carefull out there .

I have a nismo head gasket already are these no good 1.2mm?

I have a extended sump that also holds about 7.8 litres of oil i dont know if this is enough or not ?

What is the average sump extension size ?

Hope to hear back from you thanks for the advise Cheers

Adam

Ps the cams i had were being used on standard valve springs .

they are 264 degree cams intake and exhaust .

[ZimNismoBoy]

Hello, just a small update was looking at my cams and went on the greddy trust website .

http://www.trust-power.com/overseas/ov_products.html?cate=6&item=152

This is a drop in cam shaft and happens to be the cam shafts that i have model 13526204

Seems that i dont need uprated valve springs .

So im lucky on this one

will keep you guys updated when i get the short block assembly have to save up for it tough one .

Thanks for that heads up had me thinking there quite a bit.

[The Dan]

Seems that i dont need uprated valve springs .

That's what everyone says until they wanna make horsepower

[ZimNismoBoy]

lol this ones for keeping close to stock.

The beast will come in the form of a gtr32 possibly as i dont see the point in modifying this clean car lol.

It will be a weekend cruiser and some times a day cruiser.

But i do want to make horse power and im seriously thinking of going for a rb30dett sounds exciting but that will come later.

thanks for the help will post again soon once i have the ever so big lump of cash for the short block assembly.

[ZimNismoBoy]

Hello,

Just needed to ask, i have the crank and the grading on the top says BBBBBB and the bottom figures for grading are 0000000 can any one confirm why the top grading marks are no more numbers but letters ?

Is this a more recent update on the cranks and we dont have the new enough engine manual for it ?