98-99 srx600 cdi VS 98-99 srx700 cdi

still looking for a race cdi for my 99' improver, engines in, pipes are on, and trying to figure out an alternative method. ( srx 600, sx cdi, etc )
I have a race box from an 01' but already have an engine from a 99' fully race ported, and not sure if I want to try and reweld the trigger for the new harness.

Not sure what to do????
 
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I can help if you give me some info to work from, whats your engagement going to be cummins diesel?

wheres the motor make power,what rpm?







as far as welding the pickup,its quite easy to do and is reversable once you have the extra tabs welded on or anotheroption is simply make a plate and bolt the pickup coil to it, keep a .025-.030" airgap to the flywheel magnet.
 
mrviper700 said:
I can help if you give me some info to work from, whats your engagement going to be cummins diesel?

wheres the motor make power,what rpm?







as far as welding the pickup,its quite easy to do and is reversable once you have the extra tabs welded on or anotheroption is simply make a plate and bolt the pickup coil to it, keep a .025-.030" airgap to the flywheel magnet.
Click to expand...

thanks, mrviper700
My motor makes most power at 10,000 to 10,200 rpm, and working on engaging around 5500-6000 rpm. havn't been able to tune or dial in because of the cdi.
 
cummins, I see, your likely using hauck pipes your gonna need that cdi, so maybe the bracket would be the easiest fix for ya and simply move the pickup coil so you can run the 2001 race cdi and matching stator, flywheel.

Unless you have had the motor tuned on a dyno, sometimes the power isnt as high rpm as "the pipe guy" says when you buy them, it all depends on the porting,engine mods(compression),timing, along with the pipes. Never had that good of power output with the hauck srx race pipes,they made good peak hp(but narrow) at 9950-10,100rpm but made very low torque up thru the band,we engagaged the engine at 7000 rpm with those to get it to perform in the field on timers.
Ended up having much better engine performance and ET drop in modding a set of big bore 835 pipes with smaller stingers for drag racing, the peak power was then found around 8800-8900 rpm then. it made gobs more torque before the peak and was easier to clutch,went considerbly faster in 500ft.
 
Good info Don[as always]!

Back in the 90s, when I was putting together a Improve Stock VMAX4, Tim Bender advised me[in a discussion about pipes] that:

-the pipes/engine setup that make equal or similar power at a lower RPM will always be quicker then the higher RPM setup.

Of course this all makes sense to me now but back then it was an awakening to me in performance tuning a sled.

Bob
 
mrviper700 said:
cummins, I see, your likely using hauck pipes your gonna need that cdi, so maybe the bracket would be the easiest fix for ya and simply move the pickup coil so you can run the 2001 race cdi and matching stator, flywheel.

Unless you have had the motor tuned on a dyno, sometimes the power isnt as high rpm as "the pipe guy" says when you buy them, it all depends on the porting,engine mods(compression),timing, along with the pipes. Never had that good of power output with the hauck srx race pipes,they made good peak hp(but narrow) at 9950-10,100rpm but made very low torque up thru the band,we engagaged the engine at 7000 rpm with those to get it to perform in the field on timers.
Ended up having much better engine performance and ET drop in modding a set of big bore 835 pipes with smaller stingers for drag racing, the peak power was then found around 8800-8900 rpm then. it made gobs more torque before the peak and was easier to clutch,went considerbly faster in 500ft.
Click to expand...

thanks Don, now if I was to grab set of 835 pipes would I still need the race box, and should I not find a set of 835 would jaws be able to hook me up with a set to bring in somewhat close numbers. (Jaws is only an hour and a half from me)

thanks, cumminsdsl
 
you could get away with a offset keyway at lower peak rpm and use stock cdi box. Greg at jaws could make you some race pipes in therpm youd want I am sure,talk to him about it.
 
Only one I know of is srxspec, just pm him and buy that one, youll be hard pressed to find another, those are very rare! :o|
 
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