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hkute68 Offline
#1 Posted : Sunday, 20 March 2011 4:13:21 AM(UTC)
hkute68

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number gurus can you please decipher this red 6 head number
7420109 G134 8.
thank you.
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jim Offline
#2 Posted : Sunday, 20 March 2011 6:54:06 AM(UTC)
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JULY 13TH 1964 ...149 OR 161 HEAD I THINK.
Jim in Adelaide..
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hkute68 Offline
#3 Posted : Monday, 21 March 2011 10:36:56 PM(UTC)
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thanks jim, do you think it could be 179 also?
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Dr Terry Offline
#4 Posted : Monday, 21 March 2011 10:53:57 PM(UTC)
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To my knowledge this could only originally be from an EH or HD 149 hi-comp engine.

The 161 head had an extra water hole at the front face & uses a different casting number.

The EH/HD 179 (& also the rare 149 lo-comp) used a head with a larger combustion chamber & therefore a different casting number again.

Dr Terry
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HK1837 Online
#5 Posted : Monday, 21 March 2011 10:55:50 PM(UTC)
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It will fit but be pretty high compression if it is a high comp 149 and 161 head.
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hkute68 Offline
#6 Posted : Tuesday, 22 March 2011 7:38:20 AM(UTC)
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thanks for the info guys it was fitted to my 186 lc xu-1 when i bought it many years ago.was that a common thing back then?
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Dr Terry Offline
#7 Posted : Tuesday, 22 March 2011 5:59:32 PM(UTC)
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The XU-1 head is similar to the 149/161 head especially in the combustion chamber area. If the engine suffered a cracked head in the past, a 149 head would have been a good substitute, given some valve & port work.

Dr Terry
If at first you don't succeed, just call it Version 1.0
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