OzVMX Forum

Marque Remarks => Yamaha => Topic started by: firko on December 24, 2008, 08:07:02 am

Title: DT1 GYT
Post by: firko on December 24, 2008, 08:07:02 am

How nice is this?.......good money too. It;ll be interesting to see what a GYT kit'll go for. They rarely, if ever come up whether new or 2nd hand.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=190274662983 (http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=190274662983)

http://cgi.ebay.com/ebaymotors/1971-Yamaha-DT1-MX-GYT-Hop-Up-Kit-Vintage-Motocross_W0QQitemZ190274987856QQihZ009QQcategoryZ35595QQssPageNameZWDVWQQrdZ1QQcmdZViewItem (http://cgi.ebay.com/ebaymotors/1971-Yamaha-DT1-MX-GYT-Hop-Up-Kit-Vintage-Motocross_W0QQitemZ190274987856QQihZ009QQcategoryZ35595QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)

Title: Re: DT1 GYT
Post by: Gerard De Ruyter (Twistandshout) on December 24, 2008, 09:25:19 am

that guy knows how to resto! (not to detract from the fine job you did on that DT1 yourself Firko).

Title: Re: DT1 GYT
Post by: Freakshow on December 26, 2008, 07:25:37 pm

Are GYT barrel and head kits marked ? or whats the give away on them ? i got a pipe very similar to that one in the pic but never thougjht any more about it, kinda makes me wonder if like webco they stamped the barrel and heads with somthing special to ID them ?

Title: Re: DT1 GYT
Post by: Nathan S on December 26, 2008, 10:02:09 pm

The GYT pipes all have the mesh heat shield like that - lots of small holes.

They are also taller than they are wide (in cross-section), with seams top and bottom.

A pipe alone is a cool thing, but worth a lot less than a kit like the Ebay one.

Title: Re: DT1 GYT
Post by: firko on December 26, 2008, 10:48:56 pm

I've got three GYT pipes, two DT1 and an RT1 pipe. They're identical other than the diameter of the stinger. I've also got a NOS  piston port GYT RT1 Barrel, a GYT DT1 head, 2 or 3 GYT oil pump blanking off plates and a GYT DT1MX alloy high mount front mudguard. I found all of this stuff when it was worth diddly squat back when I was building the 'DT1 from Hell' back in the early 90's. The RT1 barrel and the front guard are now on the Cheney. To answer Freakys question, except for the painted finish with polished fin ends, I don't think that they can be identified externally. I may be wrong on that though. I don't have a stock piston port barrel to compare. All of this GYT stuff is now highly collectable which is reflected in the $570 price tag for a second hand kit.
                                 (http://img.villagephotos.com/p/2005-8/1062154/Cus10.jpg)
This is my old DT1 prior to fitting the square swingarm and with the original GYT/Supertrapp exhaust combo. It was later replaced with a Peter Reynolds fat pipe. Note the GYT front guard, found in the bargain bin at Noel Shipps shop for $2. It's now on my Cheney.

Title: Re: DT1 GYT
Post by: Freakshow on December 27, 2008, 10:37:59 am

So if you cant tell the GYT stuff except for a paint and polish how can you tel a genunine one of any ?,  seems like that open to abuse, even if you nly hard put the kit it would be easy to make up the rest and pass it off as the full kit ?  there must be a differance by sight or stamping.

And that Dt1 originally had a buy now of $4500, but sold at $5900  ??? someone wasnt paying attention before it went over the mark..............  ;D

Title: Re: DT1 GYT
Post by: firko on December 27, 2008, 12:10:04 pm

Quote

So if you cant tell the GYT stuff except for a paint and polish how can you tel a genunine one of any

The chrome bore would be a good starter if you can see inside. Outside, not sure.

Title: Re: DT1 GYT
Post by: Yamaboy on December 27, 2008, 10:45:08 pm

Another one. A lot cheaper and in my estimation, a better buy because it's a factory MX and not a GYT kitted enduro. Or that's what the seller says anyway.
http://cgi.ebay.com/ebaymotors/Yamaha-DT1C-MX-1970-YAMAHA-DT1-MX-AHRMA-VINTAGE-ORIGINAL-NICE-BIKE_W0QQitemZ330296908029QQihZ014QQcategoryZ6718QQssPageNameZWDVWQQrdZ1QQcmdZViewItem (http://cgi.ebay.com/ebaymotors/Yamaha-DT1C-MX-1970-YAMAHA-DT1-MX-AHRMA-VINTAGE-ORIGINAL-NICE-BIKE_W0QQitemZ330296908029QQihZ014QQcategoryZ6718QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)

Title: Re: DT1 GYT
Post by: Freakshow on December 27, 2008, 10:48:45 pm

and the head ?

Title: Re: DT1 GYT
Post by: Greenstripe 250 on December 29, 2008, 03:05:51 pm

Here's your guard ,just sold on eBay US.

  http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=170289188582&ih=007&sspagename=STRK%3AMEWA%3AIT&viewitem=

Title: Re: DT1 GYT
Post by: TM BILL on December 29, 2008, 08:57:00 pm

Quote from: Yamaboy on December 27, 2008, 10:45:08 pm

Another one. A lot cheaper and in my estimation, a better buy because it's a factory MX and not a GYT kitted enduro. Or that's what the seller says anyway.
http://cgi.ebay.com/ebaymotors/Yamaha-DT1C-MX-1970-YAMAHA-DT1-MX-AHRMA-VINTAGE-ORIGINAL-NICE-BIKE_W0QQitemZ330296908029QQihZ014QQcategoryZ6718QQssPageNameZWDVWQQrdZ1QQcmdZViewItem (http://cgi.ebay.com/ebaymotors/Yamaha-DT1C-MX-1970-YAMAHA-DT1-MX-AHRMA-VINTAGE-ORIGINAL-NICE-BIKE_W0QQitemZ330296908029QQihZ014QQcategoryZ6718QQssPageNameZWDVWQQrdZ1QQcmdZViewItem)

Nice bike  :) would this still be elidgible for pre 70 racing ?

Title: Re: DT1 GYT
Post by: vandy010 on December 29, 2008, 10:18:11 pm

i'd reckon that'd be a YES Bill,
piston port barrel and the square swing arm being the main reasons.
although even if it never had the box section swing arm, it'd be a petty dispute to disallow it.
cool lookin bike though :)

Title: Re: DT1 GYT
Post by: Nathan S on December 29, 2008, 10:40:41 pm

Just for the record: DT1s don't need square section swingarms to be pre-70 legal anymore. They must have non-reed valve top ends though. :)