lee2cossies

iTrader: (2)

What is the safe max power on a 200 block without liners? Mines a new block on standard bore, not a Turkish block, a new original casting that came from bore ham. I'm fitting a efr 8374 soon just wondering is it worth waiting and getting a nikasil linered block, aim is around 600/620 for now, would this block be safe at that?

jamie956

nothings safe at +600hp, at that power you roll the dice and take your chance.

lee2cossies

iTrader: (2)

Know what u mean, just interested to see if anyone's running 600+ on a 200 block without problems, further down the line I'm either going to get a nikasil linered block or alloy.

Staffi

iTrader: (1)

Do it once, do it properly Lee I would pal

800bhp

It's worth having it done now while it's in bits rather than doing it later or in the worse case it's to late.

Staffi

iTrader: (1)

Just to add, it's always going to be one of those questions like with the 205 block, I know folks that run 500 conversions on them and they didn't crack, Brom, Dingy, Nutter etc etc, but if I were looking at doing 600 plus I'd want everything out there available that can make it as safe and reliable as possible.


Pete

1374lee

iTrader: (11)

Best to ask your engine builder and mapper Leigh.

CheeRS.Lee.

ajamesc

If you build a proper engine with expensive internals it's a very expensive gamble if it dose go wrong lol

lee2cossies

iTrader: (2)

I havnt long built the engine and it's in the car and running on a s200, don't really want to strip the bottom end yet was just thinking can I go for a bit more on this engine or start again!

jontysafe

I've gone wet nicasil lined and I'll not be much over 500bhp. The nicasil liners aren't there just for strength but heat management too.

nixon_2wd

Nikasil is old expensive tech. Go for newer stuff (steel) which you can hone / bore to next size if anything happens.

A 8374 will put you beyond a non-linered block imo. The 7670 is already over the limit.

jontysafe

Steel is "new"?!

AJC

iTrader: (6)

Wenny runs a standard block i think but his power is only really used for 10 seconds and thats it, think Cossie Dave Pritchard maybe on a standard block at over 600 ponies

lee2cossies

iTrader: (2)

Il have a chat to a few tuners see what they think, if iv got to go down the road with liners I will just thought maybe I could get away with this engine at 600 ish. I thought a few people were running 600ish on a standard block, doesn't big Justin have a standard block? The price of having a linered block is half way to the price of an alloy block is another thing.

Gav Diamond

iTrader: (6)

Depends how far you plan to go, alloy block with nice crank etc at 2.2L will give scope for higher power if you get bored and be a nicer engine but it's if you can justify the costs

I wanted more power and after weighing up everything that I wanted the cost was more than I was willing to put into the car so called it a day
So many things you need to budget for, I wanted 700bhp but silly things like breather system was Ł800, exhaust another Ł700 etc etc soon spirals out of control

lee2cossies

iTrader: (2)

Know what you mean about it getting out of control! Really wanted a rs500 but that's out of touch for me now so plan on going as far as I can afford with my saff, for the time being anyway, don't plan on ever selling it, if I could get close to 600hp for now then slowly gather the bits over a few years to go further il be happy.

smiley

Just as a guide mate as I don't know what's in your block but my fresh built mountune spec 200 running shot peened rods was told the rods are at their limit at 550

lee2cossies

iTrader: (2)

Run shot peened standard rods myself, spoke to Harvey at scs about this and he said standard rods are fine to 700hp.

Adam-M

Bit shocked at this thread I thought the 200 block was meant to be good, I know they are old but I thought if anything it would work harden them?

How much is it to get steel liners fitted then?

Adam-M

That is amazing, take it people upgrade them below that power so they can go longer and change the angle of rotation and not because they are on their limit?

Gav Diamond

iTrader: (6)

200 block is good, mine was/is fine at 550 bhp

Rod broke his at 838bhp but think he went liners when moving from 500 to 600bhp

smiley

Sound mate guy I got it off had it spec'd for 550 probaby safety in mind it will be re spec'd for 700 new rods pistons steel ductile liners haven't you asked Harvey about running 600 on it?

lee2cossies

iTrader: (2)

They are good for 800+ with liners fitted.

lee2cossies

iTrader: (2)

nice spec you got there, im going to call him for a chat this week so as I get a chance.

lee2cossies

iTrader: (2)

To have nikasil liners fitted it was about Ł1400, not sure what liners are being used these days or the cost.

smiley

It's only block thickness between 205 and 200

DAN400

iTrader: (3)

my first 200 block cracked at only 420ish hp
luck of the draw with all of them imo

Gav Diamond

iTrader: (6)

This is it, I sold my Turkish block from my old engine and that's been running over 520bhp for a good while now and know of a few others at similar power

Adam-M

8kg of extra material I thought they'd piss 600bhp easy

turbotrev

I have been told similar about the standard rods as well.

I have a linered 200 block and once a new turbo goes on next year I'm hoping for at least 600hp keeping the engine internals as they are now

Cheers Paul

turbotrev

Also I don't know Cossie Daves engine spec but he is running 700hp now

Cheers Paul

Mark Shead

700hp on 25+year old rods is plain stupid.
My limits are 550hp on stock rods and pistons these can go higher if carefully with hitting rev limiters and plug misfired as this is what pushes them over the edge with age and power.
I have mapped a few at 600hp and been ok but you pay your money and take your chances is my opinion.

Mark

Adam-M

What's your opinion on block strength mark?

Mark Shead

I what way. I liner above 550hp for bore strength and stability of bores to reduce blow by.

Mark

c20tbo

iTrader: (1)

Im standard bore size 200 block, but running arrow long rods and short cp pistons to improve rod angle, st/st crank, im aiming for around 600bhp

Rod-Tarry

No!! didn't have a problem at 838bhp it just needed new shells at 7k miles hence going dry sump. The Block that cracked was my 680bhp engine with a 200shot of 'push' Nitrous so probably over 950bhp on the day. That was in February 2006 lots of development since then.

lee2cossies

iTrader: (2)

What type of liners do u recommend to fit these days mark, still nikasil?

Mark Shead

Custom made ductil iron after having to much nicasil blocks have oval bores.

Mark

smiley

I mentioned iron Lee was a while ago I spoke to mark

lee2cossies

iTrader: (2)

Didn't notice that bit! lol. il get a price on these liners, who fits them these days and how much?