as title really,


Had my cossie crank ground, and the Firm also got me some H/D lead/copper shells.

But on the box it says Pinto, They are the correct size and design, but not sure if they will be ok?


Mains, = -0.5mm, AE M91350,
Big's = -0.25mm, AE B91349.

 

I always thought the cossie ones were a better material.
It might be that AE use the cossie spec ones for all instead of making two different specs that's all.
tabetha

 

Thats what i thought.


tried doing a search for AE part numbers, but no luck,


i would ask my machine'st, but i recieved the crank and shells 17.30 last night, and by which time he had gone home for the weekend.

 

Got AE ones before for mates engine, orderded and supplied correctly for a cosworth but marked up as pinto. Never had any problems with them the time they were in.

Must be just as Tabetha says.

 

My mate has had quite a few cossie cranks done there, and always get the same shells,


but all his customer engines are std - 300 bhp, with out issue.

but mines used alot harder, and at least 450 bhp /lbft.

 

There is a difference as my engine builder mentioned it to me the other night.

I can't remember exactly what it is but if your building a high power engine then I imagine its quite important you know the correct info

Edit:

Its not the width of the bearing is it ?

 

The actual size of the new items are the same as my Ford cossie items that were in the engine before.

 

That possibly rules that out although can you be sure they were genuine cosworth ones you had in it before ?

Not being picky, I just remember something that was said about the bearings, I could be getting it mixed up with the big ends.

Been told a few things recently which are probably the cause of failure to some apparently well built engines, mine being one of them.

I'll see if I can get hold of him tomorrow to see what it was he mentioned

 

i'll check the ford part number, then we're know if they are.


i checked both the mains and the big ends against the ones that were in my engine.

 

Are the main bearings grooved on one side and plain the other as in the cosworth bearings.

Steve.

 

i think normal pinto shells are zing and tin


cossies are lead /copper

 

Marco,
i believe thats true, and these are lead/copper, but wanted to make sure they are up for the job.


just checked them,

Ford main's are as you quoted, but the AE 's are both grooved, but i'm not bothered about that, as the main's should be fine.

its the Big ends which has the most stress, and they are identical on apperence.



My ford shells

mains, Ford V3A V86HF 6333,
Big ends, Ford F8 220172 V86HF 6211

 

when I did my engine last year, I was told that cosworth mains are one grooved and one plain, whereas pinto ones are both grooved, I presume more surface area = better support of the crank, if you going for big power don't skimp on the cheaper items, I believe you can buy the plain ones individually from cosworth or ford and use half the mains set you have and end up with it correct, I believe the big ends will be fine though.

 

I would have helped, but I am in breach of trader rules.

 

if you use both grooved mains bearings you will have no oil starvation to bigends at high revs
cosworth bearings are harder

 

If you contact NMS....they'll give you the correct answer.

But don't call Karl.........

When I rebuilt my engine I ordered "Cosworth Bearings" from Woodford Garage, and the word "Cosworth" was on the packaging.

 

the ones i got from Burtons where wrapped in brown paper

Steve.

 

I doubt that these big power cossies stay in one piece that long that the bearings would fail, even if they are the standard pinto ones. As long as everything else is okay (oil, oil pressure, etc). But I'm no expert so I could be wrong.

 

i won't complain.





You will have oil starvation, or wont??

i could only see this possible if the crank and shells are worn, as the tolerance is what causes the pressure, not the groove.



This are meant to be lead/copper heavy duty items.

 

anyone else please?

 

The 'book' lists them as being different from the pinto bearings.

 

Thank You Martin........I knew I wasn't going crazy.

 

i know that,

But why, i know the meterial is different, but is that the only reason?

As these are heavy duty Pinto items (so lead/copper)

 

honestly i don't know...if only Karl would pay his Ł200!!!

 

how inconsiderate of him, just when i need some advice on another thread to

Steve.

 

the idea behind ford/cosworth using lead/copper bearings is that they wont damage the crank ie softer than the crank

marco

 

Sorry, i dont know what you mean by that comment?

 

Hence cosworth cranks normally don't need a regrind, just a polish when your doing a rebuild.

After 40k.....my engine was stripped down and the crank was still perfect and no re-grind needed. They just re polished the journals and fitted std size bearings.

 

Thats the same for most engines which are looked after.


Anyway, Spoke to my supplier/machinest, and these are what he always has sold for cossie, and no come backs in 4 years.

He also said they are pinto shells, but uprated lead/copper, which is the same material as cossie's are std.

 

As long as your happy.

I'd just prefer to buy the real thing from Woodford though, but that's just me.

 

i see what your saying.

But not all ford parts are the best in quality, and

Not all woodfords stuff the real thing.


i got some stuff of them last week that was meant to be genuine ford, but it werent.

 

Yep....know what you mean, they sent me a paper sump gasket once instead of the real thing.

But when I got my new bearings they came in sealed platic containers and had the word Cosworth on them.....If you tell them you want the genuine Cosworth item, then you'll get it. (Once they know you know what your talking about)....LOL

 

I'd prefer to buy the real thing from cosworth - half the price that woodford charge for bearings

 

There You Go.....