Venture engine with Vmax carbs tuning?

[thor_eyerdhal]

Venture engine with Vmax carbs..tuning?

A guy from the french board put a Venture engine on his Max but with the Vmax carbs.

At 5000 RPM (WOT or part throttle) it fall on his face.
I suppose carbs settings have to be modified.

If somenone knows this settings or at least stock Venture carb specs..

 

[PATMAX]

and he might have an additional 100 cc s and if he neglected to replace the heads from a Vmax, he is not gaining anything besides a grey colored motor. you did not mention if he carried over the V boost manifold.
Falling flat at the revs may be more of a lack of the Venture Cams to do any breathing. Perhaps a little more research before the build was in order. Sean could have told him exactly what the changes should have been

 

[Damon]

+ one to PatMax,
I would also be concerned if the Venture cam timing being Phased properly/as the V-Max engines. I maybe mistaking but the Venture engines are phased @ 70 degrees between the front & rear cylinder banks. The V-Max engines are phased @ 430 degrees between the front & rear cylinder banks.

 

[thor_eyerdhal]

Yes i told him to swap the heads, but....

Ok i found the Venture settings :

Main fuel jet : 125 !! with 150 mains he is running over rich....
Pilot fuel jet 37.5
PAJ1 80, with 90 he is too lean on the idle circuit..
PAJ2 170

And yes the needle is not the same : 5 EZ 47-3