ImaRacing 700

So what is the best YB big end bearing to use?...I have been told std Cosworth...but surely there is a heavier duty item which can last longer...as lets be honest a refresh means bearing changes so using heavier duty means longer between refreshes???

Or am i getting it wrong and any bearing even a std pinto bearing would last the same amount of time????


Educate me please my komradz

TIFF

Ask Mark

Alps Pacino

i heard that there is a bearing out of a caterpiller truck that works the best

Matt

ask mark

TIFF

To slow Matt

AlexF

A long lasting bearing means more crankshaft wear...

The whole point of seperate bearings is so that they can be scraficed instead of the crank.



Alex

ImaRacing 700

Mark has said std bearings......but as usual am finding out from ALL sides and then forming my own opinion (Proper DIY )

No disrespect to Marks knowledge BTW!

ECU Monitor Enthusiast

iTrader: (1)

I too have been told standard bearings are the best !!!

Stavros

IMO std bearings too, always.

IMO uprating bearings is only a way of masking an oiling problem thats fucking the std bearings, if your oil setup is adequate there should be no wear on the bearings whatsoever.

Preventions better than Cure

Big G

NOT A DIG BEFORE YOU CALL ME A HATER nobhead

Mark is 1 of probably a very few people willing to advise/help/assist you in your cornflake dream cossie and his reputation is 2nd to none, Take his advice and just build the bloody thing.

ImaRacing 700

You are kidding aint you? Do you know i supply most tuners?...Never had anyone on the phone tell me to fook off for advice....there is a real life off the net you know....

So again...

pugo

std genuine bearings are made by vandervall and they have been the best bearings for years...they are tried and tested........so go with whats known

AE bearings are absolute pony

Big G

Really ???????????????

Turn your head around and let the other face speak

ImaRacing 700

The tuners may actually despise me but they know a good bosch deal when they see it

Must admit Mark is my favourite...great to talk to...dont bull shit..(not that the others do!)...i just seem to get on best with Mark Maybe i am just gay

James

Pony? As in shite?

Stu @ M Developments

iTrader: (12)

Yes, as in shite..lol

Vandervell are now ACL BTW

Alg1k

iTrader: (2)

DO THE BEARINGS TOUCH THE CRANK THEN AT FULL BOOST ?
Sorry caps off

Anonymous

yeah i could do with a new front door speaking of that...

Standard bearing will be fine, because

a. you will never finish it
b. you wont get any miles out of it.

ImaRacing 700

Dingy if i will never finish it how will i get to the limited miles stage?

You gonna be surprised as are alot of doubters...it mystifys me why you think it wont be done

AlexF

Hopefully they never make contact with anything other than oil!

Alex

Rick

ACL in mine

pugo

fookin ell how times change......no wonder when i ask for suppliers of vandervall brgs every one looks at me like i am stupid (no comments please as it will be deemed a cheap shot)

learn something every day

I fookin hope not as they would last a nanosecond

Alg1k

iTrader: (2)

[

I fookin hope not as they would last a nanosecond [/quote]

Do you need uprated ones then

pugo

yep!!

the oil is between the brg face and crank journal, but you still see a loadin of about 2 tons on comp/ign stroke on the brg face albeit using an oil interface to stop contact

so i would give that a great big fooker of a YES!!!!!

ian sibbert

For such a special engine surely you will opt for DLC instead of bearings....!! less frictional losses...weight saving and more power....

markk

iTrader: (2)

and the rest my friend

pugo

i was trying to sound believable..........if you start talking of the actual forces....most people just go ' yeah right'

Alg1k

iTrader: (2)

Im glad i was advised to use better than vandies then

Anonymous

If you use a harder bearing then it can take a bigger shock load, so better for a 800bhp engine for a short period of time, if you want it to last though then go for a nice soft std bearing, because it wont kill the crank the first time a minute bit of swarf tries to embed itself and the bearing wont let it and pushes it back onto the crank instead.

As a general rule any "race" part is good for huge power and shite for huge miles, manufacturers use the bearings they do because they can last a long time.

Thats the fundamental problem with your idea of building a massive power engine then turning the wick down and using it as a normal engine, it just wont last.

P2B clearances are another example of where you want the total opposite for power and reliability.