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Forum: TECH TALK Topic: UIM Homologation Documents |
| Hounddog |
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Posted: January 25th, 2024, 9:32 pm
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Replies: 10
Views: 2224
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Forum: PARTS WANTED Topic: Custom Billet Aluminum Parts For T Boat Outboards |
| Hounddog |
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Posted: January 24th, 2024, 2:09 pm
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Replies: 0
Views: 3918
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| Would you be interested in purchasing any of the following? Parts are all for the 2 stroke models. (1) 90 hp Yamaha cylinder head (2) 90 hp Yamaha tuner (3) 15” blank midsection that can be modified to mount any powerhead and any gearcase (4) 56 cubic inch OMC cylinder head (5) 56 cubic inch OMC eng... |
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Forum: TECH TALK Topic: UIM Homologation Documents |
| Hounddog |
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Posted: January 23rd, 2024, 2:33 pm
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Replies: 10
Views: 2224
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| ARE there any classes without detailed specification documents? It just seems like such a waste of time and money especially in grass roots racing when you just want to race with your buddies a few weekends in the summer and have fun. You are not interested in moving up to a higher level or a nation... |
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Forum: TECH TALK Topic: UIM Homologation Documents |
| Hounddog |
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Posted: January 23rd, 2024, 12:02 pm
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Replies: 10
Views: 2224
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| The OMC T750 information. The Pdf for SST 45 which is the ENGINE specification document T750 does have the option of different pistons and other minor changes. https://www.apba.org/documents/1143350193-08-02-2022-SST_45_Technical_Specifications.pdf https://www.apba.org/sites/all/files/documents/SST%... |
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Forum: TECH TALK Topic: UIM Homologation Documents |
| Hounddog |
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Posted: January 23rd, 2024, 11:30 am
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Replies: 10
Views: 2224
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| [quote="Hounddog"] The gearcase wasn’t a problem. They were using it on both the twin and triple 50 to 60 hp. Yamaha had race success history in the early 1980’s with the 60D model of the twin cylinder and it used the 1:71 gearcase and a megaphone style tuner. Matt was Racing in T750 runni... |
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Forum: TECH TALK Topic: UIM Homologation Documents |
| Hounddog |
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Posted: January 22nd, 2024, 11:28 am
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Replies: 10
Views: 2224
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| I had a viewer email me about the different chamfering on the 70CES porting cylinder to cylinder. He had noticed it as well but thought it was done by previous racer prior to him purchasing it. Here is another thread about 70CES and Mod 70 Yamahas. Carl who replied to my questions was very knowledge... |
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Forum: TECH TALK Topic: What’s Happening With The 70CES Yamaha? |
| Hounddog |
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Posted: January 22nd, 2024, 9:08 am
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Replies: 15
Views: 3290
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| Well your 78 mph speed in an SLT is superior to the record over here. That record below is also a modified Yamaha 52 cubic inch. We certainly have a lot to learn! SLT EXPERIMENTAL KILO APBA RECORD 67.13 MPH 4/5/2006 CRESCENT CITY, FL OUTBOARDS UNLIMITED EVAN GOLDBERG FAIRFIELD CT EVAN GOLDBERG FAIRF... |
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Forum: TECH TALK Topic: Yamaha 70 @78mph on a Thundercat |
| Hounddog |
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Posted: January 21st, 2024, 12:02 pm
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Replies: 5
Views: 4325
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| Good idea to re-read these posts. This was the start of the project. |
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Forum: TECH TALK Topic: UIM Homologation Documents |
| Hounddog |
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Posted: January 21st, 2024, 9:53 am
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Replies: 10
Views: 2224
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| 56 cubic inch APBA SST 60 Document: https://www.apba.org/documents/1546158988-02212020-SST%2060%20Technical%20%20Specification022020.pdf What was very interesting about the SST 60 is that the engine sleeve porting are not that much different from the production 56 cubic inch Bridgeport motor. The bi... |
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Forum: TECH TALK Topic: UIM Homologation Documents |
| Hounddog |
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Posted: January 20th, 2024, 9:57 pm
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Replies: 10
Views: 2224
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| The 70CES was a motor built to specifications. It’s the sum of all it’s parts that make it a 70CES. Deviate from using the correct parts and from matching the specifications and it’s not a 70CES.. Those motors are Mod70 Yamahas. And yes a Mod70 Yamaha can be built to be superior to the 70CES. I thin... |
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