One for the cossie ppl here, what bhp have u had out of a 205 block? what bhp are they good for?

Thanks

 

442 bhp 380ft/lb for over two years and it ran 400 for many yrs before that, my old Sapph that is.

 

wow that's good then, I didn't think they could handle it when u dstart getting near 500hp

 

537.9bhp and 451.9lb/ft

Steve

 

To be totally honest, if i were going to run that again, or 500 bhp I'd build it from a 200 block i think, but as said some do run 500, i remember Dingy & Brom i think it was running over 500, now whether the blocks shat themselves i don't know, Cossie4i off here too

 

I only intend on running stage 3 so 200 block will prob just be a waste of money

 

that's some serios horsepower lol

 

Upto 400 it'll be fine, stage 3 will be fine (hopefully) i say that because there's ALWAYS that chance

 

It was fast

Peaked at 2.23bar on the hub dyno and was still holding 2 bar @ 7400rpm it the limiter .

Not so fast now as I missed a gear and over rev'd it playing with a big bike lol

Steve

 

I totally agree, think I will stick to 205 block with nice pistons and rods

 

I bet that was mental on the dyno

oh dear, what damage?

 

No idea, killed at a year ago almost to the day.

Its still in one piece parked next to the 3dr lol

Steve

 

Your stock pistons & rods will be fine for what you're after, save your money and buy some good brakes

 

My cousin's engine was built by steve scott 18 months ago. 205 block. Wrc pistons. Gt30. 83lb siemens. 28psi. Cams etc and lots of headwork. Not sure on power but gotta be 500ish. Gives it death regularly and it still purrs. Stacey

 

lol u haven't even looked at it

 

I only have a bare block so kinda got by pistons and rods lol, don't worry about the brakes I will be buying them as well

 

wow good to no, thanks for sharing

 

Oh, that i didn't know

 

Tbh it's the luck of the draw, if it's mapped correctly there's no reason you can't get 500bhp out of a 205, hey even some 200's can't take it.

 

lol no probs, cos I will be saving money on buying a block, I can put it into buying nice internals

 

100% agree with u

 

What happened Steve?? Did one of cylinders go down or did it stop dead??

 

Bottom end has a little rattle lol

Steve

 

I ran 473 bhp on mine then added a wizard noz kit and put their 400 bhp jet into the nitrous solenoid it went like fook! And lasted for about 2 years the nitrous twisted the block but was reliable with the 250 solenoid in for many years

 

ive run stage 3 twice on 205s.

steve was running big power with no issues, spend the money elsewhere is my advice.

 

My advice is dont risk it, you are asking the question because you have heard of failures using a 205 Block. Its easy for others to suggest you take the risk.

 

We built a customers engine on a 205 at .5mm oversize bore and a greens conversion cracked the bore very shortly after! Luck of the draw I'm afraid

 

My 205 cracked down the side at 471bhp/400ftlbs
But lasted well at 405bhp before that

 

Is the rs500 blocks any stronger?

 

yes, much!

 

a well built 205 block will outlast a badly built 200 block ,450 bhp is probably getting near its limit but then again it will totally depend how hard its driven lol

 

What about liners on a 205 block?? Would strengthen the bores.

It seems the weakpoint is the bores, it happened to ronny on his 200 block, big dirty crack down the middle of the bore, so as said before no one is 100% safe

 

Mr c that was a Turkish block, known for their inconsistent cast thickness around the block and it ended up very thin on the bore wall at .5 OS

 

there are different types of 205 blocks

 

I think you need to explain a bit better than that my moaning friend

Steve

 

plus they all crack in the same places just the 200 wont twist as much the 205 in big power

 

I'm aware of the Turkish block, you don't see many about anymore, and yea toner we are talking about the standard 205 block mot the rs500 deritive

 

why
you're all to tight to buy a proper block

 

Hahahaha

 

The normal 2wd 205 block
and the RS500 205 block

whats the best block to have 200 or RS500 205?