stuart collins

iTrader: (7)

im on the same block for the last 13 years

Ben26

but how long has it ran with big power for ?

but good effort anyway

gus

iTrader: (1)

stu i doubt there is many pushing harder than yours

mine is about the same

stuart collins

iTrader: (7)

started at around 220bhp , then 6 years over 300 bhp 4 years at 350+ had to be line bored this year as it had twisted

SBT83

What's next Stuart? Sticking with it or chasing more with 16v?

stuart collins

iTrader: (7)

more boost and set the nos up

SBT83

Ben26

You big cheat : )

russ rs

Turn it up

turbotrev

Old age and high torque flexing the block I've been told is the reason of the cvh blocks cracking

Cheers Paul

gus

iTrader: (1)

thats me fooked then

im old

and im running more talks the most

nigel b

tick tock lol

SBT83

gus

iTrader: (1)

you on about me or the block?

SBT83

The block. They're all ticking time bombs nowadays

nigel b

mine seems fine,touch wood
2 bar through it again today,that skyline didnt seem too impressed!

Karlos G

iTrader: (4)

lol Not all CVH blocks have had the same life, the lower the mielage the less heat cycles it's seen the less fatigued it will be... So some may be fine and others not.

Rsturbo519

Finally some good news on this post hahahaha

Did it hold well past 300hp?

I'm crapping myself now tht mine will let go

marky_g

Mines cracked but its a water way

Rsturbo519

What power was it as mate?

stuart collins

iTrader: (7)

mine split a month after i posted that

Rsturbo519

Yours was stupid hp tho Stuart wasn't it?

Bit of topic but I'm just about to fit a gt28rs ( I'm thinking you don't need a oil restrictor as off the poor oil pressure the cvh has ) just concerned about 100psi on start up.

Any advice would be great for this

Blair

marky_g

dunno wasnt even running years of living outside with no antifreeze

crazycage

Richies one split right across the front and the crack is wide enough to get your thumb nail in lol years of peaking 2.6 bar holding 2.2 .his car always ran anti freeze the 15 years plus that he's had it

Rsturbo519

That's a lot off boost lol. What power was that kicking out - guessing around 350 mark?
It seems the blocks are not as bad as folk make out then and it's unlucky if one cracks on you. ( unless your 300 hp + )
I know they are cracking on lower power on some applications but that could be down to lying outside for winters or not allowing for a proper warm up before holding it at full chatter. Lol. What you think yourself Gary?

crazycage

We never had it on the dyno ,was doing 115 terminals at the pod tho with full trim and a boot full of camping gear. I reckon it was a solid 300 maybe a little more

Chas

As one of the final words about his I had a chat with a known specialist about this some time, or rather he brought it up as we were discussing alot of things. In his opinion the block cracked was basically down to what many have said, excessive heat cycles. But what makes the 1.6 worse in his opinion are how think the block walls are cast, probably for the weight of the engine. The age/heat will make it brittle and lead to the block cracking as there is not much material there. He did say that the Zetecs are cast differently and even the 1.9 has a thicker walled block. IIRC he was saying that he now converts a no. of CVH engines to run a Zetec bottom end if the block cracks, so I would guess that it is a ZVH...

stuart collins

iTrader: (7)

im getting 2 brand new cvh blocks , going to build a spare bottom end with a few other mods to them

russ rs

Result !!!!!!

gus

iTrader: (1)

Where from? How much? How many they got?

stuart collins

iTrader: (7)

got 2 mate , cant tell u that lol

russ rs

Where I said ages ago mate??

gus

iTrader: (1)

Where????

Would liners not cure this?

russ rs

Yea liners work. But fresh block be good.

gus

iTrader: (1)

Where from??