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Author Topic: heads  (Read 1991 times)
fe-ute56
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« on: October 25, 2005, 06:35:31 AM »
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could someone tell me if a 161 head will fit onto a 149     . i was told compresion might be a problem or lack of it . thanks danny Smiley
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mcl1959
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« Reply #1 on: October 25, 2005, 07:04:30 AM »
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Head will fit OK, if you put a low compression head on an engine which previously had a high compression head, you will most certainly have less compression.  Head ismarked "H" if is a high comp head.
Ken
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Dr_Terry
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« Reply #2 on: October 28, 2005, 06:46:39 AM »
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Hi Guys.

What Ken has said about the hi-comp & lo-comp heads is correct.

But, you will find that an original 149 head & an original 161 head are near identical, their combustion chambers are the same small kidney shaped item. As a matter of fact the early 161 heads have the same casting number. So, to answer your question it will fit  & nothing will change.

AFAIK the only change was the addition of the extra small water outlet hole, at the front of the head to suit the 161's 3-bolt thermostat housing to suit the water heated manifold hoses. The 149 had no water hole there & only 2 of the bolt holes were used.

Dr Terry.
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fe-ute56
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« Reply #3 on: October 30, 2005, 11:32:19 AM »
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Thanks Terry thats what I wanted to hear
Cheers Danny Smiley
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