F7* Big End Bearings

[ashy_gtt]

Does anyone have a part number for big end bearing for an F7P/F7R engine?

I'm after a tagged set and the F4R bearings I've used in the past are plain as below.

Thanks Ashy.

 

[Jaff.]

Renault only supply f4 bearings now they don't supply the tagged f7 anymore as the f4 are used

 

[Jonny1*2]

Why not get an ACL one?

 

[Andyrg@ ClioTurbo]

Yes ACL supply them. Ashy ill call my supplier tomorrow and find out if he can still get tagged units for you

 

[marinemackay2003]

http://www.engine-dynamics.com/Engi...id95/ACLHeavyDutyCrankshaftBigEndBearings.asp

these any good?

 

[Tutuur]

Seems a bit expensive, this is the part nr for acl's: AB 4B7820H 000 Cost €80 in NL so must be gotten cheaper....Federal mogul suplies tagged bearings however i don't know the part nr as i binned te boxes...

 

[Laine_16v]

I would imagine you can use F4R bearings without any issue at all, the tab has little significance.

 

[Tutuur]

well if i had heard it right his spun a bearing so hence choosing bearings incl tab now

 

[Dan519]

well if i had heard it right his spun a bearing so hence choosing bearings incl tab now

only reason it will do that is a failing oil pump, or incorrectly torqued rod bolts. I would go with the oil pump option myself.

If there's enough journal contact to spin a bearing, a tab isn't going to make the slightest bit of difference. Also once a rod has had a bearing spin, it's usually scrap

 

[Andyrg@ ClioTurbo]

I agree with Dan, some thing internally has caused a bearing to spinn, and even with a tagged bearing would have also happened, look at Subarus there tagged and spin bearing for fun!

Im use it wont be a Mechanic error from Ashy hes a top engineer. i think it may be the fact his is stupid BHP Ashy hope your using top oil and not soem stuff from Pages LOL

 

[Chip-mk1]

Tabs make no difference, it might spin 2 milliseconds later or something, but it will still spin.

 

[ashy_gtt]

only reason it will do that is a failing oil pump, or incorrectly torqued rod bolts. I would go with the oil pump option myself.

If there's enough journal contact to spin a bearing, a tab isn't going to make the slightest bit of difference. Also once a rod has had a bearing spin, it's usually scrap

Yes it was a partialy blocked strainer on the oil pump. I will be checking the rod once its out to see if its useable.

Thanks for the help chaps.

 

[Chip-mk1]

Yes it was a partialy blocked strainer on the oil pump. I will be checking the rod once its out to see if its useable.

Thanks for the help chaps.

Very rare for a rod to survive a spun shell without any wear tbh.

 

[Andyrg@ ClioTurbo]

i wouldn't risk it my self due to heat build up

 

[Chip-mk1]

i wouldn't risk it my self due to heat build up

Normally there is a colour change if its seen too much heat, so certainly in that case bin it, also if there is visible scoring, most often there is both!

 

[Laine_16v]

i wouldn't risk it my self due to heat build up

+1

For the price of a 2nd hand rod its not even worth thinking about.

 

[Chip-mk1]

+1

For the price of a 2nd hand rod its not even worth thinking about.

Agreed!

 

[ashy_gtt]

+1

For the price of a 2nd hand rod its not even worth thinking about.

You don't tend to see many 2nd hand forged rods for sale... ?

 

[Laine_16v]

Sorry was under the impression it was a standard rod.

 

[ashy_gtt]

There has been a slight color change in the rod that spun the shell. However, as forged Rods are manufactured from 4340 Steel and the anealing temperature of that grade it around 800 degC there shouldn't be a problem with the rod reaching 200 - 300degC (gauged from the colour change). As has been said though the rod will be fully inspected and compared to the previous measurements taken to ensure the size and shape is still good.

 

[Chip-mk1]

Is there scoring on the rod from the bearing spinning? If so I would be binning it personally.
If its a quality make like an arrow it will be easy to get a single replacement but if its one of these generic Chinese ones like pec/ed etc sell be careful as the batches vary a lot from what I have seen.

 

[Cub.]

Chip mate, can you PM me your mobile or clear your PM Inbox bud, got a few questions I need your help on.

 

[Chip-mk1]

Have cleared pm space mate