Hy. Oz Hemi has the set up already, he is the pioneer. As of now I just have a Weber 32/36 downdraft, which I got because I was still under smog klaws, now my jeep is smog free, exempted, so, later on, the DCOE's will come in.
I was doing a little research, reading Des Hammil's "Ignition systems", plus the instructions by MSD. My jeep manual calls for 28 to 36 degrees of total advance at 200 RPM. The idle RPM calls for 5BTDC.+ 2 if needed. The engine is got a refurbished cyl head, new valves, no other internals(cam etc) yet. Headers, weber, and the electronic goods(Dist & EC box), so by following the readings, I should start by using the most idle advance I can get, so pro-
bably 8BTDC will be fine. Total advance is equal to centrifugal(mechanical adv) plus initial(idle) advance, now, I know the total advance from my jeep manual, 28 to 36, so if I stick with the max, 36, then,
36(total ADV)= cent adv + 8BTDC(Idle/initial ADV)..............
so, 36 - 8(idle)=centrifugal(mech ADV)
28=centrifugal (mech ADV)
...so then, my cent adv is going to be 28 degrees. With the idle at 8 BTDC. Total ADV 36.
My MSD dist comes with a adv bushing for 28 degrees(limits the mech/centrifugal ADV). I will use that one. (others for 18, 21, 25 are included, stock comes with the 18, I was told, for safety reasons). The guy at MSD told me that if the book says 28 to 36, I should go for a 32 , that would be 32= or - 4 degrees(28/36) . If I use that figure, then, if keeping the idle at 5BTDC, then the cent adv would be 32-5=27. So I could use the 25 bushing or the 28 bushing. He recomende to start with the 25.
The springs will also be changed , it comes stock with the sturdiest springs, too stiff, I will change them(provided w/ assortment of springs for dist)to the fastest(about 2200-2500 full advance)...or there is the second fastest, at 3300-3500RPM. The MSD guy recomended to start with the second fastest, the 3300 RPM. Right now, the bushing in the dist is not reaching top adv untill about late 5 thou to 6 thou, too far away for my motor. I will do this this week, it is a simple needle nose pliers operation. Des Hammil book says that hemispherical comb chambers can go up to 44 degrees. Following the photos in the book, my 232 cyl head looks hemispherical, big, round comb chamber,I would like confirmation on this if somebody knows this. I've seen my cyl head when I took it off for check out/new valves etc(no milling yet), is it hemispherical?
I will post my progress. I will try the 3500, then up to the 2200, let's see how it works.
Six, how is that FI working??
Oz Hemi, I saw those pixes, now...I can not sleep without dreaming about it....
Late_______________
