i have a 200 block here, and was wondering if its worth having it linered to return down to std bore size

it was bored out to 25th about 4 years ago as i was going to use cosworth racing pistons but change of plans i sold them and the blocks just been stood in my shed

the boresd have some slight suface rust on them

just wondering what sort of power a linered block could take

just std liners not nikisil

thanks

 

why not just have it de glazed to clean it up and use it at .25?

 

beacuase it looks like surface rust but im not to sure

its been in there quite a while

 

you could even bore it to .50 and have nice new standard pistons,still be strong enough for 400+

 

bud-weis

true, but would like std bore tbh

but have heard mix things about liners

 

ok,but my car is running .50 on a 205 block, and i have about 450bhp


and no me or Karl are expecting the block to split

 

Is it gonna be a big power motor mate ?? If so start again ... new block IMO

Jam

 

not big power, just a nice spec but reliable


at the minute my engine is std everything and has done 80k

i cahnged the headgasket to a 2 layer one and used ap studs and nuts

the bores still have honing marks in at 80 k lol

and the head has never been skimmed

but its a 205 block



so dont know wether just to use it until it blows up or just build a fresh engine using most parts from the 205 onto the 200

 

Ok mate lets be honest .. none of us stay st moderate power for long. get a new block on the way and you'l be`at big spec in no time ..

Jam

 

i know what your saying but i dont want to buy a block unless i have too

as i have 1 mint complete engine o the stand ready for stage 3

and a good 200 block and 4wd head in my shed

 

yeah but nikisil liners are £1500


but that sonly if you want to run mega power and stupid boost

ill be happy with around 400 but reliable

then ill just have to save up to buy the transmission

 

[quote="xr4x4rs"]
then ill just have to save up to buy the transmission

Tell me about it buy a spare set if goin 4x4

 

already have 2 gearboxes for 4wd

my car is 4wd

 

think 200 blocks are becoming hard to come by again..

maybe worth hanging onto it?

 

you don't need nicasil liners for 500hp!!. ... or even 600 actually

 

im runin 2.2 bar on a 100k 7.5 comp 205 block so stop panicing man theres loads of 205 blocks runing that power think brom run 500+ on one for ages

 

Exactly,the 'weak' block thing is a little misleading really, BUT.......

being 4wd there will be extra stress on the block because you have a diff trying to rip itself off the side of the block putting a lot of extra stress on it,so consider that too.

if you have a 200 block then you may aswell use it

 

Is it not true that a bored 200 block is no better than a 205 anyway ?

My engine runs liners only due to the previous owner having a bit of a meltdown once.

I know of 2 500bhp engine running liners that have not been apart in 4 yrs, except for a turbo and one headgasket.

I dont know anything about liners or what they all look like but aren't some stepped at the top to stop the liner from dropping in the bore ? I have seen a picture of linered xe block where a unstepped liner dropped down and hit the crank

Some info on this would be good

 

the liners have to be stepped else it will do exactly how you said drop down

the company i use a lot do a lot of liners for jag,ferrari old skool blocks

all v8

basically they cut the old bore out to the size of the liner, also step the block so the liner sits in

next they heat the block up and the liners on in liquid nitrogen to shrink them or sumthing

once ready the bore is siliconed and the liner put into the block

the silicon id imagine is to stop oil coming up between the liners and block

then the liners are presed into the block

then the block is machined flat again and then bored to what ever size the pistons are


thsi is how i think its done from what ive seen but never asked how each step goes about

bud-weis

my engine came out f a 4wd car, but has a 205 block in

everything on the car was 4wd bar the block



hence asking if its worth changing blocks, but it means id have to have pistons

but would like it std bore

 

what you bin quoted for a resleeve chap

 

havnt asked yet