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yella terra head

Started by _bungxu-1_ , Jul 18 2010 06:47 PM

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25 replies to this topic

#1 _bungxu-1_

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Posted 18 July 2010 - 06:47 PM

hi im only new to this site just wondering if someone can help me out i have a lj project on the way and got a heap of parts with it whilst looking through them i came across what i beleive is a yella terra head it has the yt stamped on the valves and casting numbers as follow 7437395 also d118 and 4l stamped on the far end of the head also has 12 ports would this be a yella terra and would it be worth keeping any i heard the 12 ports are rare any help would be great thanks

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#2 rodomo

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Posted 18 July 2010 - 06:58 PM

Have a read here mate. There might be some stamps on the back end of the head.
http://www.gmh-toran...=1

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#3 _bungxu-1_

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Posted 18 July 2010 - 07:23 PM

thanks for that just took a look and cant see any other castings what would this mean thanks

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#4 rodomo

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Posted 18 July 2010 - 08:11 PM

Pics of what you have will be a big help.
If it hasn't been letter stamped on the end like in that thread it could be anything. :dontknow:

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#5 _bungxu-1_

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Posted 18 July 2010 - 08:25 PM

Pics of what you have will be a big help.
If it hasn't been letter stamped on the end like in that thread it could be anything.

no worrys thanks for that ill post pics in the morn when theres a bit more light thanks

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#6 FastEHHolden

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Posted 18 July 2010 - 09:06 PM

7437395 is a 186 head, which originally are 9 port heads....but maybe someone ground the cast posts out of the inlet port and fitted a port divider...the pic (of the ports) will be the answer.

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#7 _BATHURST-32D_

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Posted 19 July 2010 - 05:57 AM

i picked up a stage 3 yt yesterday from the coffs harbour swap meet,, the bloke had 350 on it got it for 280,, best buy for this year.

cheers gong

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#8 _Bomber Watson_

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Posted 19 July 2010 - 03:07 PM

WTF there worth that much???

Im currently using one for a door stop, perfect strait off a running car, rockers guide plates valves etc....

Cheers.

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#9 _mello92_

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Posted 19 July 2010 - 03:10 PM

WTF there worth that much???

Im currently using one for a door stop, perfect strait off a running car, rockers guide plates valves etc....

Cheers.

If this is the same one we were talking about ages ago, dont get rid of it yet mate. I may still have a use for it.

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#10 _Bomber Watson_

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Posted 19 July 2010 - 03:24 PM

Yeah i sprayed it with wd-40 before using it as a door stop....

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#11 lakeside

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Posted 19 July 2010 - 04:10 PM

Why are they worth anything?

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#12 _bungxu-1_

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Posted 19 July 2010 - 07:42 PM

Why are they worth anything?

just posting pics of head its a little debating weather to git it clead up reco'd and put it on the car but have been told its not a yella terra? although all numbers point to that it is but not 100% sure my self any help would be great thanks

Why are they worth anything?

just posting pics of head its a little debating weather to git it clead up reco'd and put it on the car but have been told its not a yella terra? although all numbers point to that it is but not 100% sure my self any help would be great thanks

another pic of ports

Attached Files

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007.JPG 247.54K 73 downloads

Edited by bungxu-1, 19 July 2010 - 07:40 PM.

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#13 greens nice

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Posted 19 July 2010 - 07:49 PM

Why are they worth anything?

because people are too lazy to get the machine shop to cut out the head bolt boss's and pump in some tube when doing a hottie motor.

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#14 _threeblindmice_

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Posted 20 July 2010 - 09:44 AM

And an exchange worked head is worth around a $1000 then up from there. The pictures show no port work , maybe just painted yellow.

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#15 _Bomber Watson_

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Posted 20 July 2010 - 12:41 PM

Looks like a bit of a bitsa, got double valve springs like a YT but no port work. Also has YT valves....

I wouldent waste any money on it, unless you plan to get it worked. Might be a good starting point pending on how much has been machined off it.

Cheers.

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#16 orangeLJ

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Posted 20 July 2010 - 03:00 PM

Its a quick easy bolt on, I can see them worth $300+

If you can get $150 for a run of the mill holden head, then I dont see why $300 for something that is a decent upgrade for a mild motor isnt worth that much.

I bought three "stage three" holden heads for $250 at a swap meet years ago, one of them is on my torry still today

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#17 Heath

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Posted 20 July 2010 - 05:14 PM

bungxu-1, that's just a regular 9-port head, not a 12-port.

Someone has bothered to put bigger valves in it and stuff, for that it is worth something. One could easily strip it down, check the valve guide play and potentially get away with just cleaning everything, CC'ing it, doing a bit of porting and throwing some new stem seals at it, might well be a good head with no machining $$$. It's got the adjustable rockers too

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#18 _BATHURST-32D_

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Posted 21 July 2010 - 05:03 AM

i am not no head guru,, but that head to me dont look like a stage 3,, now whom of you fellars can name the stages???
by the way the reason my head was the bargin of the year for me, because it was a 2815843 date coded A281.

stage 1 single yt vals
stage 2 double yt vals
stage 3 port work with collars
stage 4 double val springs
stage 5 shaved or yt roller rockers

thay might not be in this order,but am i right
i will take some pics of the one i got from the swap meet last weekend
cheers gong

Edited by BATHURST-32D, 21 July 2010 - 05:03 AM.

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#19 _threeblindmice_

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Posted 21 July 2010 - 09:36 AM

i am not no head guru,, but that head to me dont look like a stage 3,, now whom of you fellars can name the stages???
by the way the reason my head was the bargin of the year for me, because it was a 2815843 date coded A281.

stage 1 single yt vals
stage 2 double yt vals
stage 3 port work with collars
stage 4 double val springs
stage 5 shaved or yt roller rockers

thay might not be in this order,but am i right
i will take some pics of the one i got from the swap meet last weekend
cheers gong

John the 3 may have had inlet porting and the 5 exhaust porting as well.