case and head vents, do I need to run a breather box? |
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case and head vents, do I need to run a breather box? |
wayne1234 |
Jan 22 2010, 11:23 PM
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#1
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Member Group: Members Posts: 260 Joined: 6-April 09 From: indianapolis in Member No.: 10,238 Region Association: None |
Ok dual webber carbed 2.0, I think the PO had the head vents running to a T then to the oil breather near the oil cap... Is this right?? I did a search and now I'm really confused,,,,
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HAM Inc |
Feb 2 2010, 11:36 AM
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#2
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Senior Member Group: Members Posts: 846 Joined: 24-July 06 From: Watkinsville,GA Member No.: 6,499 Region Association: None |
QUOTE Well if the oil is staying in the heads for a longer period of time and the heads are the hottest part of the engine it only makes sense that the oil is going to run hotter. Bingo! Now put some thought into why the oil spends more time in the rockerchambers on vented heads. QUOTE Now with unvented heads will the heads run hotter by not transfering as much heat to the oil? We have seen no evidence of this. The springs, the rocker arms and the interface between adjuster and valve tip are the only head components that rely on oil cooling. The heads generate way to much heat to rely on oil for cooling. Getting the oil into and out of the rocker chambers quickly benefits this cause. The more full throttle time your engine sees the more critical this becomes. |
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