Hi guys, what pistons and rods for a good reliable 500bhp 4x4 cossie? i also need to know what bearings to use. i need mains and big ends. im in the process of rebuilding the engine if you hadnt guessed

 

all standard just valve pocket the pistons

 

Std rods are fine mate just get them re bushed(small ends)and mahle pistons with valve pockets are fine too although there is better out there..

If you want something a bit more trick the a set of 136mm long rods(wrc spec) and short skirt pistons are awesome imo..

Cp do the short skirt piston but run a 22 mm pin so bear this in mind if you go this way as you will need the right sized bush in the rod..

The seanz 136mm rod and cosworth short skirt would be the best imo..hth

 

tony would you recommend using arp bolts for the rods
purely cos they are new or would you just put the originals back in

been a few debates on this would just like your opinion

 

if staying with std rods then yes id go arp con rod bolts

 

Same as what i used. Standard rods and 4x4 mahle with cut outs. ARP rod bolts

 

wasnt your engine a load of shit

only mucking mate

 

Long rods FTW

 

yeah the long rod combo helps with engine wear to as the piston stays nearer the top of the bore all the time..awesome combo ime..

The same as mad ades to i believe?

 

Mine's the same as his old one, Revvvvvvvvvsssssssssssss.........

 

yea they make the engine rev better and higher too..nice one!!!

 

ian howell put long rods and shorter pistons in the zetec he built me

with his inlet it revs like a motorbike

 

so know one recommends steel rods then? also what bearings do you recommend

 

Std rods and CP pistons

 

why not give good rep tuner a bell and ask for first hand advise
they can always sell you the right bits then

 

get steel rods if you want aint gonna hurt and they are new but depends what power level and revs your after and boost

and i know it says 500 but we all want more

 

in the region of 500bhp is the idea one day. basically a good reliable engine is what im after, and so that i dont have to worry about taking the bloody engine out again, for a very long time

 

they are steel rods std
you got a set of cosworth rods that are good for 700 bhp for free
you will struggle to buy a better rod the same applies to the crank
unless you are changing the bore stroke ratio use your FREE COSWORTH bits

 

500 bhp engine wear quicker and anything can go wrong

thats cossie ownership for ya lol

 

tony i think you should build your self a new something storm cossie

 

Do the rods like being shot peened?
Do people knife edge cossie cranks?
Sorry if dumb ass questions im a n/a man

 

You'd be a brave man to run the, at 700bhp. We just did 635 at 7500 but wouldn't push any harder

 

alright then let me word it better. how about forged H section rods. you'd still have standard over new forged ones?

 

Std rods are good and strong and more than up to your job.end of.lol
Why spend where you dont have to.
But by all means get them shot peened and balanced

 

Just buy my engine then

 

why do people think standard cosworth parts are standard like an rs turbo part
They are designed and made by COSWORTH
so what you are about to bin is a set of COSWORTH rods not ford rs turbo cvh 1.4 van rods
THIS YB COSWORTH engine was designed and built by cosworth it is not an evo or subaru or rs turbo
waste some money if you wish

 

no one said anything about binning anything im basically looking for advice and info on a rebuild. one of my reasons about asking info on pistons and rods is that i want to try and eliminate the bloody piston slap.

 

Im on the oe stuff all be it modded.

 

Mines just thrown together and makes good numbers. No special engine mods at all

Steve

 

Really is quite simple for 500BHP. Standard crank, rod, pistons with vlalve pockets. You dont even need to change exhaust cam which is an error a few people seem to make. I did all the hard work and testing a couple of years ago and even with a older style rs500 cooler i made 480 (411 @the wheels) with a standard ported head. With a spec r i should have seen over 500. Long stud the block and enjoy the performance

See JD has been banned already!

 

Jd was banned because as you know i used his account yesterday and i had used it before!!lol..

This is my own new account rich..

cheers danny

 

you reckon long stud it do you? alot of people have said to use a wrc gasket and uprated bolts.

 

Deffo long stud it mate!!!

 

what uprated bolts would they be
my advice is use std k1000 bolts for your budget

 

If your going to the trouble of a complete strip down you would be a mug not to long stud it..imo

cheers danny

 

Agreed, 6stud and wrc gasket, bullet proof!

 

I used proper k1000 head bolts on mine. I admit i had NO issues what so ever with the head lifting even when we used 2.9 bar boost on mapping, but if i was to do it again i think i would long stud it yes, but mainly because everyone seems to do it. i would of course follow Marks advice on the matter.