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Registered:
August 2005
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yamaha head
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Fri, 28 October 2005 09:40
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A friend who owns a 3sge celica, noticed that yamaha was cast into the head. He checked out other 3sge's and they didnt have it. Can anyone explain, is this a rare head?? is there an increase in h/p.. thanx heaps.. 
I know that yamaha has done alot of work with toyota like 18rgu's and 1jzs but ive never heard of it with 3sges....
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: yamaha head
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Fri, 28 October 2005 10:02
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All the 3S heads are from Yamaha!
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Location:
Coffs Harbour
Registered:
October 2004
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Re: yamaha head
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Fri, 28 October 2005 14:14
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yeh man 3s heads are toyota, maybe u didnt look ahrd enough on the other ones, wat yr are the others and wat yr is your mates ?
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: yamaha head
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Fri, 28 October 2005 14:28
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Aren't only the GE heads Yamaha, and the FE head Toyota?
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Location:
Coffs Harbour
Registered:
October 2004
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Re: yamaha head
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Fri, 28 October 2005 14:31
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no idea bout FE ? never had a look at one, prob true ? someone with a FE (god help u ) have a look 
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Location:
South Australia
Registered:
July 2002
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Re: yamaha head
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Fri, 28 October 2005 15:09
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afaik (and this could be partly bullshit) Early Gen 1 3S-GE heads were stamped with Yamaha on them, there is no performance difference between a Yamaha stamped or non-stamped head. Design of the cast was originally by Yamaha and Toyota stopped putting the Yamaha stamp on it when they started doing the manufacturing/casting in house.
I think this is a common theme with all 3S-GE heads. As my ST165 has Yamaha stamped on it, as do some SW20's most ST185s etc etc.
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Location:
Toowoomba
Registered:
May 2002
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Re: yamaha head
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Fri, 28 October 2005 16:24
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yamaha + toyota = fun
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Location:
Newcastle, Australia
Registered:
August 2005
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Re: yamaha head
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Sat, 29 October 2005 23:08
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I think your right CrUZsida, FE heads are Toyota and GE are Yamaha. The only exception is 2JZ-GTE, its a Toyota designed head. Hence the popularity of building 1.5JZ's in Japan as the Yamaha 1JZ-GTE Head flows better up high.
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Location:
Brisbane
Registered:
May 2002
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Re: yamaha head
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Sun, 30 October 2005 07:54
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| GTtwin wrote on Sun, 30 October 2005 09:08 |
The only exception is 2JZ-GTE, its a Toyota designed head. Hence the popularity of building 1.5JZ's in Japan as the Yamaha 1JZ-GTE Head flows better up high.
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This is a popular myth, as usual started by the yanks.  Both the 1JZ-GTE and 2JZ-GTE heads are designed by Yamaha, as are all performance-oriented Toyota cylinder heads. There is no significant difference in flow rates between them.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: yamaha head
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Sun, 30 October 2005 07:57
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"4th gen" (or whatever) ST215 3SGTE has at least a yamaha sticker on it...
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Location:
Newcastle, Australia
Registered:
August 2005
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Re: yamaha head
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Sun, 30 October 2005 08:09
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| Norbie wrote on Sun, 30 October 2005 18:54 |
| GTtwin wrote on Sun, 30 October 2005 09:08 |
The only exception is 2JZ-GTE, its a Toyota designed head. Hence the popularity of building 1.5JZ's in Japan as the Yamaha 1JZ-GTE Head flows better up high.
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This is a popular myth, as usual started by the yanks. Both the 1JZ-GTE and 2JZ-GTE heads are designed by Yamaha, as are all performance-oriented Toyota cylinder heads. There is no significant difference in flow rates between them.
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Aha, another myth de-bunked. So why the hell do they do it?
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: yamaha head
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Sun, 30 October 2005 08:14
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Coz the price of a new 2JZ block is the same as a 1JZ block from Toyota.
And it doesn't require any electrical changes since you are retaining the 1JZ head.
Hence, a 'free' 500cc
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Location:
Brisbane
Registered:
May 2002
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Re: yamaha head
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Sun, 30 October 2005 08:15
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If you already have a built 1JZ with aftermarket cams, manifolds, turbos etc and you want to upgrade to 3.0L, it's cheaper and easier to build a 1.5JZ than swap in a 2JZ. This is because the manifolds and related hardware aren't compatible between the 1JZ and 2JZ.
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