My Log Mod, Adapter and Pics

[Danielson]

I have finally gotten around to fitting the ADM34 Weber to my 221. Initially the bottom end power seemed down on the stromberg but after getting the powervalve working properly and swapping the aircorrection jets, (I now have 160 on primary and 180 on secondary, mains are 135 and 220 idle is 60 and 70 on secondary) it seems somewhat better but not as much as i hoped for. The idle still seems a little rich and I think some further tuning will help. Are jets available for the primary low speed circuit ? It uses a two stage idle jet but I have bipassed the second stage.
I am also yet to fit the return line or Fuel regulator although it seems to run fine without such.
Whats Best here ?
Heres some links to pics of the inlet before and after, the hole was 40mm now is 50mm.. and the adaptor. In hindsight I should have made the adaptor plate thicker as it would have given me smoother flow..
The problem now is i wnat more power still, Bigger cam maybe as well as more carbs..

 

[73GreenMachine]

Having a look at your adaptor, there is maybe a bit more metal you could get rid of. Try to really smooth the transition from the intake hole into the top of the log. Aside from that, are you running extractors? They are the other MAJOR restriction to the stock ford pre crossflows. Doing intake and not doing exhaust means you will not see much gain with modding one, but by doing both things will be much better.

 

[73GreenMachine]

The other thing... those hex screws seem to protrude above the adaptor plate. It probably would cause a vacuum leak and be responsible for your jetting problems. If you make another adaptor plate do what you said and make it taller, but dont make it too tall or you might have bonnet clearance issues. By the way, What have you done in regards to an aircleaner(I had to make a custom one to fit under the hood)?

 

[SONNY]

whack a 2v head on it and watch it go

 

[Danielson]

Thanks for the response.. The transition is quite smooth and there are no burs or sharp edges on the intake its just that the angle of the ramp leading in is a bit shallow. I am running pacemaker extractors into a 2 inch exhaust. I have a 2.5 to fit but have not got to it yet. All compressions are 170 - 180 psi within 5 compression strokes. Motor seems good generally speaking.
Where those hex screws stick out above the adapter aren't a problem as I am using a 5mm thick gasket that is cut out around them so sealing is good.
I am using a standard XF air filter box but had to cut off the snorkel as it fowled on the shock tower.
I have also just fitted a thermostat as i found it did not have 1, It wams up much quicker although has not altered performance.
I will get the rocker cover off one day and measure the valve lift as I think the cam is not much above standard.
I have also found that just above idle the engine seems fluffly and does not run smooth. It sounds lean but I have had to wind the idle mixture scew most of the way in to stop it running rich..
Cheers for now Daniel

 

[Danielson]

Have drilled pilot jet to .7mm which has solved the lean response just off idle . had to screw mixture in to about 2 turns out .