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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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 2T head differences
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Fri, 06 June 2003 00:11
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Ok does anyone have any pics and info on the 2 Different 2T heads (Yes 2T, NOT 2T-G) 
I used to have a pic showing the differences in the ports but do you think I can find it 
Also does anyone know for sure when the design changed ? Pretty sure it was April 1973 but I need to check it out more when I have my manuals handy.
Thanks.
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I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
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Re: 2T head differences
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Fri, 06 June 2003 02:54
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different 2T heads?
rod i know the 2T and 3T are different thats for sure.
can take a pic of one i've got at home if you want...
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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 Re: 2T head differences
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Fri, 06 June 2003 04:19
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Greg,
if you know what year model it off then that would be great actually !
Thanks
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Location:
Finland
Registered:
November 2002
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Re: 2T head differences
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Fri, 06 June 2003 10:14
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Now Im confused. I thought that early 2T's differs from later 2T and 3T heads. Toyota gives same part number for both 2T and 3T head (11101-29229 and substitute 11101-29228), so I dont think that theres differences. Of course 3T-C has drilled out EGR slots (11101-29278 and subs. 11101-29279). And 2T-B with higher CR (11101-29355 and subs. 11101-29356).
Rod, friend of mine have early 2T but it might be hard to persuade him to take intake (and exhaust?) manifold off cos it's daily driven. I faintly remember that I measured about 2 years ago that valves were something like 1mm smaller but I might be BS:ing so take that as a gospel till someone confirms this.
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I supported Toymods
Location:
melbourne.victoria.austra...
Registered:
June 2002
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Location:
Colac, Victoria
Registered:
May 2002
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Re: 2T head differences
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Sat, 07 June 2003 05:40
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my old head had that same 45 degree cut ( out of a 71 model )
2tb one was a little different when i looked at it - and id wondered if it had been further machined
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Location:
Finland
Registered:
November 2002
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Re: 2T head differences
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Sat, 07 June 2003 14:29
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Getting interesting!
I measured my ports, intake port internally 31mm, externally horizontal 34mm and vertical 35mm, so its oval. Intake manifold horizontally 28mm and vertically 29mm, oval too. I get these measurements no matter how many times I measure.
All mesurement are +/- 0.2mm accurate because of all kinda cast snots.
Head is out of -80 (3T)TT-132 LB.
Classique71: can you measure your exhaust port and valve size? Mine was 25 X 31mm and normal stock valves.
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Location:
Colac, Victoria
Registered:
May 2002
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Re: 2T head differences
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Sun, 08 June 2003 02:32
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Sorry - Cant measure the ports, as i no longer have my ta22 - or the spares i had in the shed Ask jezz - he has my car now - but i dont think he'll be too willing to take off bits to measure
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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 Re: 2T head differences
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Tue, 24 June 2003 23:42
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Sorry fo rthe dely guys, Am Flat out at the moment but still looking into this as soon as Time allows !
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