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Yella Terra head

Started by _shep3305_ , Jul 31 2011 09:53 AM

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7 replies to this topic

#1 _shep3305_

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Posted 31 July 2011 - 09:53 AM

Hi all, we have just picked up what i think is a yella terra head..We are hoping to build a warm 202 for my sons LJ project.. I was wondering if anyone can tell me what type of head it is please.. Numbers are 7438296, B120, 6H and at the end of the head its been stamped 23AJ Thanks

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#2 FastEHHolden

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Posted 31 July 2011 - 05:12 PM

I picture says 1000 words....but as far as we can tell there is no way to id YT heads...noone seems to know what the stamping means.

Your head started life as as a 161 high compression head.

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#3 _shep3305_

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Posted 31 July 2011 - 07:03 PM

I picture says 1000 words....but as far as we can tell there is no way to id YT heads...noone seems to know what the stamping means.

Your head started life as as a 161 high compression head.

Thanks fasteh.. We pulled it off the motor this arvo and it doesnt look to bad.. My son is very excited as he now has the last piece for his driveline... Shame he doesnt get his licence for another 2 years lol

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#4 _double_d_

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Posted 31 July 2011 - 07:53 PM

do yella terra heads have bigger valves
beacause i have one here
and also a head i pulled off a worked 186
the valves on both heads seem to be the same size
would it be more that the 186 head i have has bigger valves then stock?
only real difference between the two is a bit of smoothing in the inlet ports and the usual sleeve for the bolts on the yell terra

daniel d

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#5 greens nice

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Name:Kevin
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Posted 31 July 2011 - 08:37 PM

yt valves are 1.68 & 1.44 and standard red is 1.49 and 1.25 i think? yes noticeably bigger

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#6 _stretchlc_

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Posted 02 August 2011 - 07:49 PM

Heres a few pics of a Yella Terra Head to help you identify it-
Double Valve Springs are also fitted, as opposed to an outter spring and an inner dampener!
YT cast onto Valves as per pics......that is.......if it still has the original Yella Terra Valves fitted!

Attached Files

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!BmEosBgBGk~$(KGrHqQOKi4Etk1C2zfCBLeRSomIiQ~~_35.jpg 9.07K 6 downloads

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#7 _shep3305_

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Posted 03 August 2011 - 05:46 PM

Heres a few pics of a Yella Terra Head to help you identify it-
Double Valve Springs are also fitted, as opposed to an outter spring and an inner dampener!
YT cast onto Valves as per pics......that is.......if it still has the original Yella Terra Valves fitted!

Thanks for the pics... It has double valve springs and oversized valves, i hope it will be a better head than stock.. Because its been identified as originally a high comp 161 head does that mean i have to use 186 pushrods on a 202? :blink2: