Honda CB750 Sandcast

The Restoration Shop => Engine Mechanical => Topic started by: kettle738 on July 10, 2011, 03:45:35 pm

Title: #28 Carb Top Problem
Post by: kettle738 on July 10, 2011, 03:45:35 pm

Help needed please; my carbs were in dire need of balancing (UK CB750 Chassis 1010369) the Morgan Carbtune made short work of the job and they adjusted beautifully, lovely steady idle etc.

The downside though was the #28 cap on No1 carb, the M6 thread in the carb top itself is almost stripped, not quite but very close, so it's now at least temporarily held firm with loctite.

Looking at the threaded section, the short tubular casting protruding above the cap body seems too thin to effect a typical thread repair, insert, helicoil etc.

I guess these small threads are vulnerable to ham fistedness and age so I can't be the first to have this problem, has anyone successfully repaired the cable adjuster thread, or failing that does anyone know where a replacement cap could be obtained?

Any advice gratefully received............Mick............kettle738     

Title: Re: #28 Carb Top Problem
Post by: kp on July 14, 2011, 05:05:16 pm

Try Steve V as he has had these reproduced. Look under the topic "Parts for Sale". KP

Title: Re: #28 Carb Top Problem
Post by: donzie on July 14, 2011, 05:41:46 pm

http://www.alvinproducts.com/Products/Products.asp?id=1 (http://www.alvinproducts.com/Products/Products.asp?id=1)

Title: Re: #28 Carb Top Problem
Post by: kettle738 on July 15, 2011, 06:55:35 am

Thank you for the advice, I have sent a pm to Steve and will bear in mind the chemical metal should it get to that stage.

Thanks again..............Mick.