BRC blos jet sizes

[tom-madbiker]

Ok so I have a few vehicles with blos lpg carbs on them but they are all larger engines I have used the jet that comes with them which I think is a d type would that be ok with a Mazda 1.6 engine in my Dutton or should I go a bit smaller e jet I think or make my own just thin the slot down a bit

[tom-madbiker]

A thought just occured to me maybe I could use a power valve between the vap and the blos input

[Gilbertd]

why make it complicated, why not just put a mixer on?

[tom-madbiker]

A blos Is a mixer really but much better in theory its a variable orifice mixer I have decided to make one I just guessed on the size of the venturi I made it roughly half the area of the original as its a 1.6 engine I will post a pic when it comes off the spark eroder

[tom-madbiker]

Photos the one on the right is the original and the one on the left the one I just made

[CNG]

I've messed with these a lot. I'm a great fan of BLOS. I've one of those Innovate O2 gauges sitting on mine, and the BLOS has it run near-as-damnit, stoich like a champ. See my thread. Mine works using a power-valve in the feed to the BLOS. An AEB Leonardo stepper closed loop and BLOS would be the ultimate set-up.

https://forums.lr4x4.com/topic/41805-closed-loop-lpg/

Jet/needle thingys: Tinley were getting low on stock when I last looked, and I think I had their last few. Thus making your own might be your only option. You might find what you have works well enough. BLOS have such a wide range of adjustment over any given needle I found heaps of overlap. In my experience, I found jet-size wasn't making the differences I would have expected, be aware I was usiing CNG. If you control the draw and/or the power-valve you'll get there. Until I'd done a fair bit of messing, I always found mine too weak.


From memory - larger than your homebrew? - I have half dozen of differing sizes. If you want one, drop me a decent drink. Frankly your effort looks fine to me. Try it.