thats what i have been told and im confused as fuk , dont know what to do, get a new block or what, anyone know if this is the case???

 

yes it is why would it not be ????

 

Very dodgy IMO unless you put liners in and run std or .25 pistons!!!

 

1mm oversize is not a good idea due to the amount of metal removed from the bore this creates to much heat into the block which can cause cracking into the water jackets
if your car is 2WD just rebore your old block .25 why waste money on something you dont need

 

they reckon, its a lot more liable to twist?, okay for 330ish but no good for above that, thats what i was told?

 

The 205 std block has a flex rating of 380bhp and in a 2wd its fine as at 400bhp you WILL be wheelspinning which takes the flex away!

 

pete, i have got at the minute a 200 block in my car thats been oversized to .5mm, the twat dropped the rod so i need to rebore it to 1mm as it has slight scoring, prob is its a waste of money buyin 1mm oversized pistons to do it if at the end of the day 1mm wont be any use for 400bhp, might as well get a replacement block which i can buy std or.25 pistons for and then it will be ok , thats my theory anyway

 

i had a 400bhp 1mm oversize e nngine and it worked fine

 

ask yourself this simple question
what did the big power boy use before the 200 block came out??nothing wrong with the good old 205 block in a 2WD high power motor I have seen more 200 blocks crack than 205,I had a call from a repitable rally cross engine builder once needing a block it had to be the very first 200 block as the rest according to him are crap

 

i aint got a 205 block though pete, its a 200

 

rebore it then to .25 Ł400 for pistons job done

 

put ya glasses on pete its already overbored to .5 and needs to go to a 1mm which supposedly is shit

 

Ohhh I should learn to read put it on E bay and get a 205 block

 

Call me , i have a super dooper 200 block fully rebuilt motor , not even run yet

 

I agree that 205 block is just as good, dont limit yourself and if your buying a block concider a good 205 block and have minimal bore

 

i know someone wo uses a 205block 2.25mm oversize at 30 psi

 

put's my mind at rest abit, my 205 block is 1mm oversized and i only wana run low 20's

 

i'd check the meaning of the before getting too excited.

i'd guess a 2.25mm overbore is to fit liners?

personally i would not want to go more than a 0.5mm overbore on any cossie engine. there's no need when there's so many 205 blocks out there.

 

Jesus what a load of shite

 

[quote="J871yhk"]Jesus what a load of shite [/quot
would you mind telling all why ???????

 

Quote:

Originally Posted by Bosch Man

The 205 std block has a flex rating of 380bhp and in a 2wd its fine as at 400bhp you WILL be wheelspinning which takes the flex away!

???? Sorry to pick holes, but please explian Phil............

 

so do i

 

well you would be wrong then

 

Bore flex is not related to wheel spin!

alex

 

Alex....a 4x4 will GRIP thus cause MORE flex in the block...a RWD just spins thus decreasing FLEX...are you a pro????

 

phil. y is it only rated at 380bhp?

 

phil? you there mate.

ok. can anyone answer that question for me please.

stu, karl, mike, madevelopments etc

please

 

A std 205 block is 380bhp rated a 200 block is 500bhp rated the RS500 is 800bhp rated...all FLEX rated.

Basically if you are running 4X4 you NEED a 200 block as the grip increases the twist...on a 2wd a 205 is safe to any bhp as over 400 you aint gonna grip LOL unless you obviously spend a lot of cash modifying the back end and in that case you are loaded...ROFL.

 

Have a look at a 205 block compared to a 200 or rs500,look in where the water pump is you can see lots of xtra meat...Just a lot more metal for strength....You will find most over 600bhp YB blocked cars if done properly are linered making flex rating stronger as the bore walls are stronger.

 

thank you phil

 

not on here you wont how many are there on here and how many are linered blocks i suppose these are all "not proper" you and your fucking pringle tube blocks

 

Matt you are very nieve if you think over 600bhp motors aint linered probably only Karls if he took that at full power on a track day it wouldnt last long imo...i can tell you this ALL my engines are linered and the metal is stronger than the original block...i WONT crack my block in the bores FACT.

nikasil linered...is just a better grade of material than mine...but then i dont run 600 plus bhp!....also your looking at 3 times the cost.

 

so matt, do you agree with what phil is saying about the 205 block?

is this 380 bhp rating correct.