Wossner pistons

[COZZFATHER]

Funny that iv just asked him

he may say its down to budget but its interesting to know what went into one of his special engines back in the day and nowadays

[oddkidd]

Jano can get Cosworth ones ill try him

loads of options on these pistons. Best off calling for help.

[cossiedavid]

Thanks rod ill call mark later

[cossiedavid]

CP .

[Tore_TJ]

I've had Wössner in my escort for 4 years. They've been faultless!
No noise at all..

Piston slap are caused by wrong machining. They're coated pistons and need less clearance than mahles for instance..

I'd use them again without a doubt..

[SCS j1mbo]

Cp, I have them in mine and wouldn't have chosen anything else

[cossyking]

cp or je mate wouldn't use those other cheap rubbish I told you if you need any I can get them ?

[AJC]

Having second thoughts about my wiseco's now.

Too late anyway they're going in

[Mechanicalrepairs]

Got them in my 400bhp 306 with no problems and built many an engine with them, had no issues at all.

Carl

[xpower]

what pistons is Piero fitting ? coz if he says they are good they will be

Hi Karl
The answer is not straight forward as not 1 brand does all ,

I would use std Mahles on most road engines to around 500bhp.

Above that then cosworth or cp get my vote

Yet on WRC engines its omega all the way..

In my opinion the best manufacture of pistons is mahle, it's a shame they don't make motorsport yb pistons.

Regards piero

[COZZFATHER]

Yo M X..... see i knew it wasn't gonna be straight forward regarding pistons,i know cp aka carrilo pistons are good and so are the rods they make and i know people who win rallys using carrilo rods and farndon cranks and swear by them but its always good to see what the pro's put into a competition engine and recommend for a fast road cozzeh.

So if you were speccing a Cozzeh donkey what rods bearings valves etc would you suggest and gaskets etc for fast road and competition ????

[RS 500 Registrar]

Woosner pistons

one word ,,,,,,,,,,,,,shit ,,,,,,,,,,,

rattle like a skeleton having a wank in a biscuit tin

[cosmagedon]

Mark is putting CP in my stroker engine. Got a cheap set of brand new wossner pistons out of my old build if you are still after a set.

[DaveEsccos]

To be honest, you can't say that one make of piston is better then another make of piston, it depends largely on the job you want them to do.

For example... If your rebuilding a YB to OE power, stick with the cheapest OE spec piston you can find. If your building a monster power one, speak with your tuner, then the piston provider to see what they reccomend taking everything into account.

To say a particular piston is rated too or good for a set power limit is absurd. It implies that at 1bhp more then the limit it will fail, while at 1bhp less and it will run with total reliability forever, it doesnt work that way at all.

The more hp you put through an engine, the more stress you put on all the internal components which will effectively reduce their life span. This life span can be extended with better materials etc but nothing lasts forever. Even modern factory Ford engines arent expected to last much past 120,000 miles on stock components with stock power and regular servicing. This is why race engines are rebuilt every XXXK miles.... some times after only tens of miles as opposed to thousands! (im getting off topic here so will get back on it now lol).

Over the course of my career ive dealt with every piston manufacturer on the planet... Wossner, JE, Wiseco, Cosworth, Capricorn, CP, Supertech, Mahle.... everyone and all companies have their plus and minus points.

With so much variety and wide spread choice on pistons, I think the questions customers should be asking is not "what is the best piston?" but instead, "how did this piston come about?".

If manufacturer X is selling a piston, where did they get their information from? No one can expect in their right mind that the manufacturer has bought, stripped, measured, rebuilt and specced every piston they offer! Wiseco, Wossner, JE to name but a few provide pistons for over 3,000 applications including the motorbike range!

The only way to produce a catalogue of pistons is to copy designs already out there and rely on information from existing piston customers. It would be like my self phoning a YB tuner and asking for a YB piston to copy for me to produce for my own catalogue. The manufacturer does not know that what they have been sent is correct let alone gone too the trouble of measuring the true head cc's etc to make sure the compression ratio is correct, they will simply go by what they have been sent because they dont have the time or facilities to measure everything they want to offer. Certain manufacturers will copy off each other further compounding the problem.

The next big obsticle is who and how are they being installed. Ive been sent back some unbelievable abortions from customers in the past where they have claimed the piston is at fault. Massive detonation marks, piston rings installed the wrong way round or with the wrong gaps, gudgeon pins installed with hammer blows! Very little surprises me anymore.

To refer to some of the previous comments made here, the YB piston from Wossner is a popular seller for Wossner europe wide and a lot of companies swear by them (I won't name names here because its not really fair too but Ive sent plenty out before to companies who even post up on here without incident). I would bet that what you read on forums about pistons and other related components is 99% trash or half truths and you should really speak to the companies who make their reputation and their living out of the business.

Ive had quite a few incidents where customers have been on the phone and e-mail telling me one thing, then posting something else on a forum..... all the while unbeknown to them that ive spoken to the tuner and builder of their car and I know exactly whats gone on. His installation wasn't up to spec and he tried to do something he shouldnt have. But on a forum, all I get is abused because there is now way it could have been anything he did wrong, must have been the components we sold

Anyway, I could prattle on for ages here but I won't. I don't normally like to drone on about this because im primarily on this forum for banter and meets (besides, leaping on to every post about engine stuff banging on about "I can sell you XYZ" smacks of being a big head and that aint me) but if anyone wants some friendly advice or a chat, PM me, e-mail me or phone me. My door is always open