runslikeapenguin
Member
- Joined
- Sep 10, 2008
- Location
- Tacoma WA
I'm currently working on a MS2 first start and im having some trouble getting the engine to fire. Before i lose my mind and go down a rabbit hole i wanted to double check a few things with peeps who are far more experienced than i am.
B21
531 head
IPD turbo cam
STS cam gear
ID1000 injectors
960/850 throttle body
9.0:1 CR
Group A aluminum crank pulley (No timing marks)
DSM CAS W/ yoshifab disk and adapter
LS2 coils running in wasted spark
Injectors are setup using both channels
Coils and injectors are paired up as follows.
They fire correctly in test mode
1212
1342
Board is setup using these exact instructions.
https://www.msextra.com/forums/viewtopic.php?t=64555
I had some issues with a new CAS that turned out to be bad. I pulled one from the pick and pull that is working correctly. Trigger #1 was set by locking the timing out then using a timing gun in 2 stroke mode to find the TDC angle from where the CAS was triggering.
I don't have a backing plate so i used the following methods to confirm cam and aux shaft clocking.
I used a degree wheel, a dial indicator on the lifter and a piston stop to degree the cam in because my head was shaved quite a bit. The final result of the shaved head was 2 degrees of cam advance to put the cam timing at 'zero'. The tooth directly to the left of the red yarn is index 0 the tooth on the red dot on the aux shaft is tooth index 44. This count was confirmed with the provided white lines the timing belt came with.
some megasquirt settings
B21
531 head
IPD turbo cam
STS cam gear
ID1000 injectors
960/850 throttle body
9.0:1 CR
Group A aluminum crank pulley (No timing marks)
DSM CAS W/ yoshifab disk and adapter
LS2 coils running in wasted spark
Injectors are setup using both channels
Coils and injectors are paired up as follows.
They fire correctly in test mode
1212
1342
Board is setup using these exact instructions.
https://www.msextra.com/forums/viewtopic.php?t=64555
I had some issues with a new CAS that turned out to be bad. I pulled one from the pick and pull that is working correctly. Trigger #1 was set by locking the timing out then using a timing gun in 2 stroke mode to find the TDC angle from where the CAS was triggering.
I don't have a backing plate so i used the following methods to confirm cam and aux shaft clocking.



I used a degree wheel, a dial indicator on the lifter and a piston stop to degree the cam in because my head was shaved quite a bit. The final result of the shaved head was 2 degrees of cam advance to put the cam timing at 'zero'. The tooth directly to the left of the red yarn is index 0 the tooth on the red dot on the aux shaft is tooth index 44. This count was confirmed with the provided white lines the timing belt came with.






some megasquirt settings





