Cris craft stinger 22ft....that is my boat

I doubt Dyno facilities are common there. Try to get a carburetor that’s as set up as possible. Maybe pay to have one that’s been dyno tested and set up on a very similar engine to yours shipped over.

Yea...your right about dyno...there are no engines like my...the best we have are mercrusers 5.7...6.2....and 7.4...that is in liters we are in metrick sistem.So i dont have spare parts everything i need i have to order from USA and wait for 20 days to come..wery expencive...I have found a carb it is a 750 i think it has 2 acc pumps and 2 floats holly and im making a blowthrou aut of him.

Id recommend buying one setup to be a blow through carb from CSU or someone like that. It would be cheap insurance. Your science experiment carburetor could blow up your whole engine. Try to copy a proven engine combination as much as possible

I run a blow through carb set up and if you don't have access to a dyno at least get a wide band o2 set up it will make adjusting the carb a little less difficult

Thanks guys for the tips...A videband a/f guage is coming with the parts for the carb and a set of holly jets 64-99...

Watched Engine Masters on TV (cable - motortrend channel) the other night, the episode they tested different blow thru carb hats and different positions of the hats with 8 02 sensors (1 per cylinder) and all i can say is yikes ! Oh, and try go find it on youtube or etc.

Believe episode is ‘ Carb Hats for Blowers ‘

Thanks for the info...ill take a look.But honestly i think with the help of you guys i could make this work.I'm not looking for big boost since my engine is all stock max that i would do is mayby 4psi nothing over that.

This is the carb i need help with...got the holly blowthrou set few days ago...im starting modification soon.


I realy hope we can make this work

Can sombody tell me the best way to set valve clerance on this engine.