What's the standard bore size of a 200 block?

Also, are there some cheap turkish copies going around or something that are supposedly weaker than the genuine Ford ones?

How do you tell these apart from Genuine Ford blocks?

Thanks

 

i was just away to type the turkish number and i've had a complete mem block

you can find the number on the face of the block!

oh its 99!

someone will post a pic for sure but easy to check.

 

You off to Turkey this summer then Dan

 

So the cheap turkish copies carry the number 99 do they?

 

Need something definitive before some cowboy buys the naff copies and files the offending identification off before selling them at a premium!

 

I think calling them copies is a bit strong. They're just made by Turks, that's what's wrong with 'em

 

I need a definitive answer here please! Surely someone off the top of their head knows!

 

The Turkish blocks do have the 99 number stamped and as for standard bore is it not 90,82 in my book

Steve

 

As per Chop, the potentially dodgy blocks were cast with 99 on them - I'm fairly sure Euan had a piccy up somewhere showing the location of the '99'.

 

The turkish blocks are weaker, proven on numerous engines by JG and also MAD have had problems.

They arent copies though, they are what cosworth themselves have been selling!

They have a 99 on them, which is the year of manufacture as far as im aware.

Bore size is no different to any other cosworth block, and neither is the deck height.

 

When we say weaker at wot sort of power levels though, i know the MAD team have pushed the 99 block to destruction but wot is a good safe level for them

Steve

 

I thought the turkish blocks were still good for 500bhp, going past this is where problems start?How long did Euans last for on the 99 block before it died?

 

No one can quote a definitive power number at which they die, but Id be feeling cheated if it happened on a "normal" engine (ie i wouldnt expect an issue under 500bhp)

 

So is the correct bore size 90.82 then!?

If the later 99' blocks are comfortable at around 500hp then that is plenty for me!

 

90.82 is original size yes

 

Fantastic, exactly what I needed in the first place!

Thanks Chip, appreciate it

 

i see you have asked dan , i will measure tommoz for you , will let you know , also will look for the 99, but were on the block will this be ?

 

Just dropped you a PM Ian LOL not sure where the 99' will be stamped, not overly fussed about that bit mate if they are safe up to 500hp

 

Ill get a pic up of mine in 2 secs.

I got mine direct brand new from Mountune 2 years ago so they aint copies or anything like that.

I have had issues with my block cracking in the cylinder walls and after closer inspection my block seems to have thiner walls than two other older 200 blocks we looked at.

I have ran my block for over 2 years now at various power levels and only really had the prob on 500 ATW spec which i guess is similar to most peoples 600 bhp engines as these are measure on the engine dyno, so anything under this power I would say they are ok.

Any other questions?

 

99 stamped in bottom left of this pic at the end of a longer line of numbers.