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I supported Toymods
Location:
Toodyay, WA
Registered:
July 2002
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Location:
Tasmania
Registered:
May 2002
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Re: 18RG Questions
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Wed, 01 January 2003 10:32
 
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Crankcase ventilation thap pipe probably is. You can keep it blocked up, unless you want to run a normal PCV valve back to the inlet manifold, for polution reasons. Just make sure the vent on top of the cam cover is vented somewhere and not blocked. You can either put a filter on it, or just have a hose going back behind the engine facing the ground. Or you can have the top hose going to a catch can, and another hose to the catch can from the crank plate vent if you want.
The big bumps in the floor of the exhaust ports, are ment to be there. But no one knows why. It is solid aluminium though and when porting those heads, people grind them down flush.
Issues with extracters will depend on the brand. Do what you think is right.
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I supported Toymods
Location:
Toodyay, WA
Registered:
July 2002
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Re: 18RG Questions
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Wed, 01 January 2003 11:14
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Thanks for the info Jonny.
but the bits in the exhaust port are acutally little depressions. not bumps!
if it was a little bump i'd probably grind it down myself 
but the ports feel very good as they are, i dont know if they have seen a die grinder before or not.
CamZH
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Location:
nth ringwood, Victoria
Registered:
August 2002
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Re: 18RG Questions
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Wed, 01 January 2003 11:25
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thats a 18rgu pollution head with air injection or air pump set up it had 4 holes that went to every ex port it should be 8.3 comp also in the 1st pic is for the pvc it fitted near the inlet across to the carbies
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