assuming a standard stroke, what capacity (cc) does a 40 thou overbore result in???

is that what there goin 4....
i paid like 2500 4 mine...
am i an idiot lol..

I wouldn't be to concerned Chris...that 205 block listed isnt the same casting as a Cossie 205 block and the internals certainly arent Cossie. It is one of the lower quality 205 blocks. IMO the best/Cossie 205 block has 205 in big text on the side like the 200 block below

forgetting crank and other internals, what are the differences between the BIG 205 print block and thesmall 205 print block??

From what I understand, the earlier 205 blocks are little more than a flash escort/cortina pinto block. The later 205 blocks are substantially stronger. I haven't had them side by side to compare otherwise.

quote:

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Originally posted by MK1_Oz

assuming a standard stroke, what capacity (cc) does a 40 thou overbore result in???

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standard stroke 76.95mm
standard 90.82mm bore + .040" (1.016mm) is 91.836mm

= 2038.844cc

Woz

The small welsh plug big number 205 block was developed for the RS500, it is basically identical to a 200 block, it also has the same cooling system upgrades as the 4x4 200 engines, except in the head. The difference in these blocks is in the casting from approx 2 inch down the bore, the bores step out to provide the material to avoid split bores under high boost and provide the means to long stud.

A small plug 205 or 200 block is completely un-necessary for a N/A pinto or YB for that matter.

The small welch plug 205 block is aka the RS500 block. The more mainstream 2wd Cossies in 3 door and Saph ran the large welch plug/large 205 text version. This was also found in late pinto powered garden variety Sierra's. The early Sierra's had the small print 205 block from my understanding. These(and the one on ebay)from my understanding are little more than an Escort/Cortina Pinto block...agreed,fine for NA,I dont think I could trust one for anything other than stock 204hp Cossie duty

Hi guys, Ok all i want to do is build a bullet prove motor that will rev to 8 to 9 thousand revs and wont fall to bits, And a standard pinto block can not handle this so iv been told, so what's the answer, can someone set me straight on this matter. I just do not want any twist in the bottom end of the motor,Have been told that a 205 block is the answer.

If it is a non turbo build...a normal Pinto block will be fine