focijohn
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 posted on 6/8/08 at 11:20 AM |
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pinto 205 block & YB motor bits
I got this through in an email from a mate of mine, i know some ppl on here are using cozzie bits in a pinto so there must be some sort of
difference.
Email as follows:
"So cosworth yb engines use a 205 pinto block but what is the different spec on the crank and pistons. what i am implying is if i geta yb head
complete with turbo mani, find an old injection 205 block and swap for lowcomp pistons and a decent headgasket will it bolt straight up. or is the
crank a completely different profile, are the oil sprayers differnt at blockbase?"
I don't have a clue as never had anything to do with these so excuse me if its a dumb question!
Cheers
John
Anyone going slower than you is an idiot. Anyone going faster than you is a maniac.
Too many targets but too few bullets.
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andyharding
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| posted on 6/8/08 at 11:35 AM |
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Cosworth crank and rods are different to Pinto ones in that they are much stronger.
Are you a Mac user or a retard?
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mcerd1
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| posted on 6/8/08 at 12:16 PM |
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I've gone the other way 
I'm using the cossie rods and crank (+ accralite pistons) in my pinto
the rods are much stronger, 0.06" longer and the pistons use a floating pin with circlips - also they don't have oil spray jets
the crank has a longer nose for the larger pulley, 9 bolts to the flywheel (odd spacing so it can only go 1 way round), the bearings are basicaly the
same size but to better tolerances, the strokes the same and they are a bit stronger too
the 205 block cossie is the same block as the later 205 injection pintos (the ones with a large 205 number cast in the sides high up on both
sides)
the cossies just got the ones with the better tolerances (grade 2 & 3 on the origonal bore size)
the 205 cossie oil pump has a special top cover with the feed for the spray bar which is on the back of the pickup pipe
or I guess you could mod the block to take the later spray jets (no idea whats involved, I got a 205 spray bar + pump)
the flywheels and clutch are bigger, the jack shaft has a smaller end, and all the cam/belt pulleys are all different
I've probably forgoten loads of things - but basicaly you need so mainy bits to make a 'proper' cossie that your as well just buying
a complete cossie in need of a rebuild
of course you can easily use a good 205 pinto block to replace a dead cossie one, but most of the rest of the pinto bits arn't up to the job or
don't fit
have a look here:
http://www.siipicossu.com/manuaaleja/manuaalit.htm
one of the ford manuals actually lists all the bits that were changed or modified for the cossies (the one that covers all the normal stuff for most
of the cars)
[Edited on 6/8/08 by mcerd1]
[Edited on 6/8/08 by mcerd1]
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John Bonnett
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| posted on 6/8/08 at 05:18 PM |
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Hi John
You are about to enter a minefield. YB parts are scarce now and expensive. There are also dodgy heads floating around on the market. I got hold of one
that was so badly warped that when they machined it flat the machining impinged on one exhaust port and the camshafts were being bent and picked up on
the centre bearings.
In the end, I bit the bullet and went to the experts and they built me a fantastic engine that pulls from nothing and revs to eight five. I ended up
with a new head, cams and associated head parts. Pete Jones at Jondel Race Engines is the man to talk to and he will certainly answer all your
queries.
I personally think the better route is to use a Duratec; it is modern, light and in the long run more practical. Pete is achieving phenomenal out puts
from this engine. This I must say, is just a personal opinion. The YB has been around a long time and engines really have improved.
Best of luck with whatever route you decide on.
John
[Edited on 6/8/08 by John Bonnett]
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