Quote:
Originally Posted by jungleboy
You have cosworth heads right? They are already CNC ported and it would be a shame to mess with them.
Yep if you’re using option 4(MAP), when the engine is off, the manifold is at atmospheric pressure and the MAP sensor reads about 101 kPa. When the car is idling the manifold is in vacuum and would read around 30 kPa. When you’re making 1.5 bar of boost (150 kPa) the MAP would read about 251 kPa (101 + 150).
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Yeah I thought that was the case - so definitely wasn't because of too much boost then.
Quote:
Originally Posted by RUSSGT
Have you gotten the heads off yet? Hope you didnt do what Tino did and peel the sleeve from the casing.
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Have started on the second lot of cam sprocket bolts. If it weren't for these goddam bolts the car would be pretty much back on the road already.
Quote:
Originally Posted by BALISTC
But of course!!!! I forgot about that.
Don't touch them, they're already ported!
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Roger that. So it's just machining the heads & block, crack test everything (x-ray or whatever) and get new head studs for good measure. Oh yeah and a new head gasket would probably help things too
