Hi simonmarsden66 appreciate the info! I guess they are generically called a few things uni-syn, manometer and in the case of the one I have it's a 'Synchrometer' made by Redline in Germany, and the model is 'STE' as they make a few different types. Yeah, the plumbing hack works well and reliably. Easier and more precise than the old method of setting the carbs up with 'equal' turns and you can see that dramatically when you use the tool. A mm of turn can make quite a large difference, so definitely a better method IMHO. Thanks so much for the comment and the info! I really appreciate it.
How'd it run and ride with the new carbs? Great I'm sure. I didn't know such a vacuum device existed. I have a Morgan CarbTune Pro that I use on my Honda CB750 (and other bikes) but the manometer style gauge doesn't work on the vintage Bonnevilles. I tried to hook mine up to the two nipples on carb manifolds, the ones with the balancing hose, but it didn't work. I'll have to pick up a Unisyn.
Hi @daveco1270, it's been pouring rain here and haven't had a chance to take it out yet. I am sure the carbs and idle will likely need a little more tweaking after I take it for a spin, so hoping to do that sometime this weekend. I can tell it is already running much more smoothly and getting a more complete burn of the fuel as it was definitely running rich on the old carbs. In case you are curious the device I have is the 'Redline Synchrometer STE'. Thanks again for the comment!
Hi @briangibbs518, I purchased them from Charles Waggett who owned British Import Motorcycles in Vancouver for decades, but has now retired to Vancouver Island. He still has some stock (not just carbs) from when he had the business and I purchased them off him. I believe he may still have some Amal Premiers' left so it would not be a bad idea to reach out to him to check. Here is the link to his ad: facebook.com/marketplace/item/928356181854535/?ref=search&referral_code=null&referral_story_type=post&tracking=browse_serp%3A9c01a9ce-f735-4e96-922c-011c15acb44c&__tn__=!%3AD He included shipping and a few other minor things I needed, so worthwhile chatting with him. He's also quite knowledgeable if you have questions. Really appreciate your comment, and if you haven't already, please subscribe! I really appreciate it!
I am working on a 69 bonneville that has manifolds on it with ports to hook up vacuum gauges. I have never seen these manifolds on any other triumph so I have no idea where they came from.
Hi @user-se7vt5ow4e, my intake manifolds have ports on them as well. The ports on mine are not for a vacuum gauge but used to connect each of the intakes to each other. There is a simple hose from one intake manifold to the other. Hopefully this helps. If you haven't already, please subscribe! Really appreciate it!
Hi @jcreek3889, good catch! On my bike the old Amal's were running very lean. The worn pistons (slides) were allowing air to leak through and lean out the mixture. The replacement we did in this video to install new Amal Premiers fully resolved the issue. Thanks again for your comment and if you haven't already, please subscribe! I really appreciate it!
