after a little advice please
shopping around for some ACL race bearings there on ebay for £95 for a set
mains and big ends from the parts dealers and tuners there dubble the price, do I go with ebay or pay dubble from the dealers? I now we all like to save where we can but will these on ebay be genuine ACL ?

 

dont use them on the big ends mate

 

wot do I use ? tuners all use ACL don't they ?

 

These are the set I have just fitted to mine, along with some Graphogen paste for assembly.

http://www.ebay.co.uk/itm/ACL-RACE-B...item51b5692644

 

Why?

 

most of the wrc subaru impreza dont use acl race bearings .some tuners dont as well ,they are to hard

 

Which tuners?? And I doubt WRC boy would use aftermarket bearings. Most will be bespoke bearings made by the engine manufacturers for themselves.

 

mahle bearings big ends

 

so do you guys recon these on ebay are genuine I just don't understand why there half the price as the tuners are selling them, is it that they carnt compete with ebay prices ?

 

i am having a wrc engine build now be finished in march .gas rings ect ect .and i am not using them .the builder is one of the best in the world ,not just the uk .and the uprated pumps are a wast of time as well

 

What pump will you be using?

 

dont no mate left it to the build .but if you look at the usa subaru impreza puma race team he builds there engines .and loads more including colin mcrae

 

I can say that tuners advise to use them, also can say that tuners advise using plasticine. Unless they are willing to provide evidence as to why they don't use them its just opinion, I know of Evo's and Impreza's built to silly power using ACL Race, with no issues.

Only issues I know of are people rebuilding after a head gasket, with oil and water mixing and NOT changing them. As the coolant eats bearings for fun.

 

Our Subaru Impreza 2.1 Fully Forged 650bhp Complete Engine Package


2.1 stroker and Closed Deck Block with rear thrust and 14mm head stud conversion
ACL competition main bearings including modified centre thrust bearing
Re-bore 92.5mm and 45˚ crosshatch hone with a fine finish hone
Surface grind both case halves by equal amounts
De-burr re-tap threads and chamfer all edges
Re-worked customers cylinder heads
Cylinder heads lapped into block faces for the ultimate in head gasket sealing
Ported and polished including combustion chambers
Machined heads for 14mm studs
Supertech valves with double springs and titanium retainers
Supertech valve seals
Crower 280 deg cams
New cam follower buckets (later spec)
Cosworth head gaskets
14mm head studs
Modified head dowels
RCM vernier exhaust cam pulleys
New 79mm crankshaft
RCM Arrow conrods
Mahle Motorsport bigend bearings HERE IS ONE TUNER
Mahle 2618 Powerpack+ pistons 92.5mm
Advanced Automotive's 12mm modified oil pump
RCM baffle plate
New GC8 sump
New oil pickup pipe
New oil cooler Modine
RCM water pump
RCM timing belt guide
Samco water hoses
STi timing belt
V1-V4 tensioner assembly setup
Full genuine Subaru gasket set

Please read the following information points

 

So they used ACL lol.

 

TRY LOOKING AGAIN MAHLE BIG ENDS LOL LOL LOL

 

READ THIS AS WELL

 

THIS IS JUST ONE TUNER I NO .SO MANY PEOPLE ON HERE TAKE THE **** HE ASKED FOR ADVICE I GAVE SOME ITS UP TO HIM TO research IT OR IGNORE IT

 

Maybe if you checked for at least spelling errors you may be taken more seriously. But on a serious note, I think as ACL bearings are well established you may find it hard to convince people not to use them without some sort of proof...

 

how cares about spelling errors i dont .so what ,will that make you a better person .the thing is i dont take the **** out of people .you should not as well .

 

Chill out guys where all friends All I need to know is are the ebay ACL bearings genuine

 

I am not taking the **** out of you at all. It was a valid point. Im am still wondering what reason there is not to use ACL's? I genuinely would like to know as I will be using some soon. Do you have anything other then your opinion on this?

Just because a builder uses something else doesn't make everything else a poor product. The comment about uprated pumps baffles me too... I can say forged engines are a waste of time... But that doesn't make it the truth.

To the OP I have no idea. You look at places like Camskill and their stuff is quite a lot cheaper then other places and it is all genuine. I can get a genuine HKS SSQV from Nengun for £145 compared to about £300 elsewhere. They are also genuine. So bargains are out there (So is over pricing) but so are rip off's and fakes.... I would go somewhere established for important stuff. Camskill and ICP get my vote. RCM are great but expensive.

 

ACL bearings will be better than worn out bearings

 

Bought my ACL race mains and big end bearing from E bay. No issues.
This is the first ive heard of any concerns regarding ACL? Anyone else have bad experiences?

 

Yes they are genuine, they are from Advanced Automotives in Bristol, they are one of the major parts suppliers for subaru engine builders and affiliated with RCM so no need to worry, I got most of my parts off them for my last rebuild.

 

Who is your engine builder? pm me if you don't want to say publicly, I'm after someone to build me an engine in the not too distant future.

 

I built mine with acl mains but with Mahle Bigends. the acl aren't to consistant in sizes on the big ends, they vary. mains seem to be ok though

 

you should not of said that mate .as they will all jump on you .lol



all so they are a lot harder so if some thing goes wrong .they have more chance in taking out your crank .so on the rebuild you will have to buy new crank and bearings .but using mahle you got a good chance in just replacing the bearings

 

Well most seem to query ACL as their race bearings can be .002" out of being round, now to the un-informed this would seem a major issue. But it is NOT a problem, its SUPPOSED to be that way, as all bearings are out of round as this promotes the hydrodynamic wedge, so flowing oil around the bearing.

And also because of Eccentricity.


And if anyone is going to claim about products or methods being incorrect etc, please post up the source of this information, as we all would benefit from learning things. As no matter how "experienced" you are, the day you fail to learn something, or explore something, is the day that things will start to go wrong.

It's not a personal attack, not a childish thing, but called peer review. Most scientific theories and processes go through it, and showing your evidence and explaining is how you do it. Saying "Oh I was told by a tuner...." is only going to bring comments of disbelief, no matter how liberally WRC is thrown in.

 

We started using ACL bearings over 10 years ago, one of the first in the UK to do so.

We fit ACl mains and big ends in everything. NEVER had a problem.

But we build engines carefully, not just bolt a pile of bits together. Prodrive WRC engines used to use Clevite to my knowledge, but as they got thrown away after 1000 miles it really didn't matter what they did.

I am almost certain that most other serious professional UK engine builders use ACL too.

David APi