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pistons/ con rods





What do you mean by performance items? Forged? if so you can get forged rods from Arrows and forged pistons from Omega or KTR. But theyre very expensive, the rods are £155 each and the pistons are a simular price.
 


yep - i mean forged. but better-than-OE forged.

The rods from arrow I know... anything else?

So You say Simon that OMEGA makes pistons to F7P std size @ approx. 155 £ each.
Can they make something overbore?
If I ever get money to buy forged bottom end, I would definitely go further -with making bigger bore (if such pistons are available), as this is a fraction of a cost of all the forged stuff.
 


OMEGA can make anything you want, piston wise that is, just depends what you wanna pay. I know they make std. F7R pistons though and keep them in stock, I think theyre 150 quid each, not sure if that includes VAT or not.

When you say forged bottom end, you including the crank in that? Forged cranks are mucho expensivo, like a grand plus :eek:
 


the crank i pass... rather balancing only :) Im not that crazy afterall

Thanks for all the info. :)

has anybody tried ;) Prima 2.1 pistons?
 
  Clio 190bhp Hybrid


Primas website has been down for ages so if that isnt up and running god knows what is going on with the actual company?
 


they are not a true 100cc extra, and is all that money worth the extra 68cc? or so.....

im rather spend my money on a well done head.
 


Head comes first :) cams, new valves, flowed...

im thinking of what comes next. prob the TBs, but then i am afraid of stock F7P pistons/rods not coping with the extra load.

Me and my friend have a strong need to do very quick N/A cars this Year. he will be doing his astra C20XE, and me my Valver.

But if You say 68 cc... thats... thats not much :) heehee.
 


Where abouts are you?

the XE will be puming out 250 bhp VERY VERY VERY VERY easily.....so do some decent work to keep up.

your ata disadvantage straight away as you have 30mm inets, whilst he has 33mm.

The head is a great design.......and you need a good F7 head to work on.

you afraid the std bottom end cant cope with 200bhp or with throttle bodies?
 


Im gonna be running std rods and crank in my 2.0l conversion, just get them seriously toughened; balanced, lightned, shot peened, knife edged, nitrided, etc, etc.

Im aiming for 230bhp off gas and about 400bhp on gas (with high octane feul)
 


christ Si, your figures keep goin up and up!!!!

Keep us up to date mate....can you email pics of progress?
 


Lol, do they? I said from the start I wanted 200+bhp off gas and then 150bhp on top of that. So 400bhp is just a target, aint gonna get it though, hopefully will reach at least 300bhp ATW though.
 


We are in Poland Ben :) in Warsaw :)

I dont think I will keep up... :) but new valves are just on the top of the list. Head work is suposed to be rather "complex" :)

but as for now these are just wishes. car is now undergoing a treatment, after an accident, and its body comes back to shape ;). will take a look at the muscles later on...

>>>The head is a great design.......and you need a good F7 head to work on.
can you explain what You mean? "Coscast is great design"? or "my renault is great design"? or "you need a great design to keep up with C20XE"?

and what is a "good head"?

>>>you afraid the std bottom end cant cope with 200bhp or with throttle bodies?

Yes.. in fact I am.. am I wrong? - thinking about pistons mainly...
 


maciek........

are you getting your head work done in poland, whats the state of the tunning industry like over there.

Anyway, i meant the XE design is GREAT...very very good, and i mean you will need some very good port work, especially around the throat and radii.

If he has a coscast item, then hes lucky, as its slightly better tha the GM cast varient which can go porus sometimes......also the coscast is rarer and more of an item to have.

A good head is one with minimal removal of material yet increasing flow without decreasing velocity by any large amount. A good head wont act like a lumpy cam where you have to wait for velocity to build with rpm then get a whack like a cam commin on......

I would be more worried about the crank and main caps at high rpm than the pistons or rods.
 


are you getting your head work done in poland, whats the state of the tunning industry like over there.

growing... faster and faster...

there are a couple of companies already doing very good job. some specialised in rally/race prep. strictly. Turbo conversions are now booming.

But its usually starting from zero (not knowledge-wise, as many of the tuning chaps were actually buliding very nice engines years ago - like 650 cc FIAT 2 cyl, pushing crazy far over 100 hp. lifetime 13 hrs. :) A couple of very talented electronic- guys working with various Racing teams now, and many, many others. Many people have, and had clever ideas, but its just 10 Years now, since they can sell it, and try to innovate on other engines than Lada/Fiat licensed machines... which were the most popular once.. ;) .
You (Brits, just for example) always had good traditions of motorsport, and motorsport tuning style You had Ford escort, Pinto, than cossie, then Subaru and many other makes - free market.... We had no possibility. 20 Years ago we couldn;t buy fuel without having coupons. We have almost no tracks - so no track-days almost. this year will be the first year (well second let;s say) of official 1/4 mile racing. We have no professional strip yet. ;(

And yes... the money factor - If we earn half of what You do (average salaries I mean) and the cost of car tuning is mostly the same , when You expect highest quality - and most of prts come from abroad (western europe, USA, JP), than You can;t expect it to be so popular as in UK (just an example).

But I think we are chasing... In last Id say 5 years, there has been an incredible leap forward. We had like 2-3 RRs open to public then, now I would not even try to count 30? i think much more.
There are strong groups of enthusiasts fueling up this growth... luckily. I hope we will get out of the margin soon.

The government is not helping the motorists thou... :(
 


Quote: Originally posted by maciek on 20 February 2003


growing... faster and faster...

there are a couple of companies already doing very good job. some specialised in rally/race prep. strictly. Turbo conversions are now booming.

But its usually starting from zero (not knowledge-wise, as many of the tuning chaps were actually buliding very nice engines years ago - like 650 cc FIAT 2 cyl, pushing crazy far over 100 hp. lifetime 13 hrs. :) A couple of very talented electronic- guys working with various Racing teams now, and many, many others. Many people have, and had clever ideas, but its just 10 Years now, since they can sell it, and try to innovate on other engines than Lada/Fiat licensed machines... which were the most popular once.. ;) .
You (Brits, just for example) always had good traditions of motorsport, and motorsport tuning style You had Ford escort, Pinto, than cossie, then Subaru and many other makes - free market.... We had no possibility. 20 Years ago we couldn;t buy fuel without having coupons. We have almost no tracks - so no track-days almost. this year will be the first year (well second let;s say) of official 1/4 mile racing. We have no professional strip yet. ;(

And yes... the money factor - If we earn half of what You do (average salaries I mean) and the cost of car tuning is mostly the same , when You expect highest quality - and most of prts come from abroad (western europe, USA, JP), than You can;t expect it to be so popular as in UK (just an example).

But I think we are chasing... In last Id say 5 years, there has been an incredible leap forward. We had like 2-3 RRs open to public then, now I would not even try to count 30? i think much more.
There are strong groups of enthusiasts fueling up this growth... luckily. I hope we will get out of the margin soon.

The government is not helping the motorists thou... :(
do they ever! lol

Oh, and we brits did use polish cars to tune!!!

back in the 50s early 60s when teh eqiuvalent touring car series was cost based, the fastest way was to use cheap commie cars, and most used one from poland, large boxy, cant remember the name, will research it up.

Oh, and us brits....escort....we go far further back than that!!! LOL

Good luck mate!
 


Oh, and us brits....escort....we go far further back than that!!! LOL

yep.. like i didn;t know hee hee;) I;m telling what is still very popular, and what begun years ago.

in the 50s 60s? polish commie cars? the only car - polish, at a time was I guess "Warszawa M20", based on Russian "Pabieda", which was based again on Chrysler I think...
In the beggining it had valves "upside down" style ( i dont remember english word for this setup). Then came pushrod design :) 2.something litre 4cyl... heh..

then in 70s Polski Fiat came - licensed Fiat . 1.5 , then in 80 Polonez ;) (complete crap.) and of course Fiat 126p 650 :)

lately we had big daewoo factory(yes...! ;;) ) but they bankrupted, now maybe Rover will invest in it.

BUt lets not get this thread too OT and sentimental. :)
 


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