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Location:
townsville
Registered:
July 2002
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2TG HEADS
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Tue, 15 October 2002 10:04
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I have a few 2TG heads all are yammie heads 2 are complete with cams and i also have 1 half cam and timing cover to convert a 2t motor. I am looking around $300 for each head but offers will be considered.
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Location:
Terrigal
Registered:
May 2002
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Re: 2TG HEADS
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Wed, 16 October 2002 00:23
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Mate i've heard there are a few different style 2tg heads around with different model numbers. Do you know which one these are? think it starts with 11111 - xxxxxx or something?
Thanks
Joel
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Registered:
May 2002
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Re: 2TG HEADS
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Wed, 16 October 2002 14:22
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All of the 'Yamaha' heads end with a #8826x, and have a two bolt face plate on the front with "Yamaha", as opposed to the eight box alloy face plate with nothing and #8822x. The general rule is the later the head, the bigger the valves but shorter the cams.
is there anything 'special' about these heads, like modified cams, bigger valves, ported etc..? if so i could be interested.
rob.
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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Re: 2TG HEADS
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Thu, 17 October 2002 05:15
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Rob,
The 11111-88220 Head has the small valves. All heads after 88222, 88260 and 88261 have the same size valves. I am unsure of the valve sizes in the 88262 (Unnumbered) Head. The 22860 and 22261 had increased webbing for a slightly stronger head and were typically EFI heads. The 88220 was only ever carby and the 88222 head was mostly carby fed.
Cam sizes did vary I haven not the exact figures for all cams. I havethe 88220 and 88222 specs somewhere.
Eggman,
Yamaha made ALL the 2TG heads. If they are 8826x Heads I'll give you $300 for the lot if you are in Sydney and the heads are in usable condition !
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Registered:
May 2002
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Re: 2TG HEADS
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Thu, 17 October 2002 06:39
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rod,
yep thats the long version of what i was trying to say  u sure about the #222 not having reinforced head webbing? that's the impression i was under until i looked at-
http://www.tassie.net.au/~jar/2tg-info.html
I wouldn't really care but that's the model i have in my ta22 atm.
i'm interested in the specs on the cams if you could find them.
cheers
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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Re: 2TG HEADS
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Thu, 17 October 2002 07:14
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I'll have a look tonight pretty sure there is a 88222 head there !
I only have the cam specs for the 88220 and 88222 cams as fitted to the GT TA22.
Thay are listed in the Tech section of the Toymods Web site in the TA22 Article I wrote.
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Location:
Brisbane, Queensland
Registered:
May 2002
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Re: 2TG HEADS
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Fri, 18 October 2002 09:42
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ah I tend to disagree
my 2tg head is a 88220 and I was planing to put bigger valves in but there is no room for them
my inlet valve is about the size of a 50cent peice.
anyway my head has big valves,
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Location:
townsville
Registered:
July 2002
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Re: 2TG HEADS
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Fri, 18 October 2002 14:08
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Iam not sure what the numbers are but will find out, Asfor any thing special they are stock but in very good nic and all have the large valves.
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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Re: 2TG HEADS
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Mon, 21 October 2002 00:14
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Benny,
Mate the 88220 Head has smaller valves ! No question !
88220 has 43mm inlet and 37mm Exhaust !
88222 on has 44.5 mm inlet and 38.5mm Exhaust.
Eggman,
Let me know re my offer ?
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Registered:
May 2002
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Re: 2TG HEADS
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Mon, 21 October 2002 07:41
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amazing what 1.5cms does to performance!!
hey rod, u seem to know a bit about the #262 2TG head, is there any chance the elliptic ignition chamber in the head could be machined circular so that a non-off centre piston can be used (eg 3T flycut piston)?
cheers
rob
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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Re: 2TG HEADS
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Tue, 22 October 2002 01:37
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Rob,
Mate I am yet to get my hands on a 262 head. (anyone ???) I want to play with one a bit first to make sure but if you used a flat top piston you should be able to use that head.
If you want a High compression piston you will have clearance issues with the combustion chamber.
The stock 3TGTEU pistons would foul on the Chamber as far as I can guess without getting my hands on one.
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Club President
I supported Toymods
Location:
Sydney
Registered:
May 2002
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Re: 2TG HEADS
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Tue, 22 October 2002 01:40
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Oh as for machining out the combustion chamber ! It could be done but it would be cheaper to buy a non emmision head like a 88261 or similar. Do you have an 88262 head ?
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Location:
Adelaide
Registered:
May 2002
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Re: 2TG HEADS
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Wed, 23 October 2002 10:57
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i do 
if you look close-ly at picture you'll see the off center combustion chamber
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