join this group... i know someone there has tha answer.. i posed tha question there and will let ya know what they say as soon as someone answers.....
Scream And Fly Powerboat and High Performance Powerboating Discussion Forums
sorry, can't answer that.. i've not fooled with tha opti parts enough ta know.. but i'm pretty sure there is gonna be a difference???..
maybe someone thats "in tha business" can answer that...
when ya get done with all tha adjustin' be sure ya have a slight gap between throttle cam and linkage roller when at idle.. don't remember if manual tells ya that.. that is ta insure that idle timin' and idle circuit of carbs controls rpm and/or speed.. again numbers don't mean much!.. i've had...
thinkin' PM has a slightly bigger exhaust openin' vs. production blocks best i remember.. don't hold me to that though.. any 2.5 "high performance" gasket will work though..
a 2.5 (even tha 225 PM) will run ona 2.4 mid... can get ya part numbers but if ya don't know what ya lookin' at you probably won't know tha difference... if this is tha case ya need ta start completely over with tha adapter plates.. there are several combinations you could possibly have and if...
if it lost a magnet (they are glued) there would be no doubt... have you tried squirting (pre mix) straight in to tha carbs when it starts ta "hunt" or shut down?
first thing you need is an OEM manual for it................ (ebay). like said comp and fire check... comp 110 or more.
Things already done (I'm assuming correctly):
- Mechanic set the timing & carb sync
4) clogged carbs -> the bottom one was rebuilt and I believe the other two were examined...
flywheel/crank doesn't use "key".. will only go on one way... have you "turned" any screws that would change any thing related to idle speed, idle timing, and or wot timing?.. do you have a oem manual?.. get a spray bottle with a "pre mix" (50 ta 1) fuel in it.. squirt it in tha carb throats...
"The older models wired direct to switchboxes"
guess that shows my age, huh.. never traded, bought and/or installed a 16 amp OEM (34's, 35's, 36's, 66's) stator "with an extra wire"................
jus another reason i quite that sickness!.........
has tha poppet ever been serviced/replaced?.. why not start with a NEW poppet assembly???.. not that expensive.. if ya have some minor "pitting" a little JB and time (elbow grease) will do tha job of filling marks in.
some of tha guts made a slight change over tha years but in all of 'em tha...
think you'll be fine with it.. i do know that a production efi fuel delivery is justa an "add on" ta any of tha 2.5's.....
let us know what ya find jus ta satisfy my curiosity!!!..
you can look it over really good.. tha basic "rotating assembly" (both block halves, pistons rods and crank may still be tha same???.. still justa a 2.5 block assy... if both blocks are 2003 they should be tha same whether efi or carb... they don't build a separate efi block anda separate carb...
