twin turbo 415 sbc timing

[bonedaddy]

sorry wrong place to post

[msdtech1955]

what was it you were looking for ?

[bonedaddy]

timing for a twin turbo sbc starting line and finish line just some place to start

[msdtech1955]

whats your combo?

[bonedaddy]

Originally Posted by msdtech1955

whats your combo?

415 sbc/ brodix track1 heads/all forged /blow through csu carb/twin 67mm turbos/ATI turbo3speed with a brake 4000 stall./9in 3.50 gear on a spool/comp everything 645/645 lift with 249/249 dur at 50 on a 115. hdy roller.good to 7200./ 3600 lbs on a 275 tire /msd 7562 boost controler and a 7535 with boost retard some help on using the 2 controller at the same time would be nice i have co2 to control the top of the wastegate as you sugested in post .all the help i can get would be great right now i have the 2 lite blue wired to my roll control and the dark blue on both on the trans brake HELP!!!!

[msdtech1955]

is this gas or alcohol...?

on the boost controller ...is it plumbed like this ?
http://www.msdignition.com/forum/showthread.php?t=16933

what boost are we looking at ?
co-2 pressure ?
launch rpm ?

basically....tell me what you have done so far ..the more info you give me...the better we can help you on the timing and the boost controller curve!

[bonedaddy]

waste gate is set up like duel waste gate 1 jpg

compression is 8.98.1
20 psi boost for now
gas 110 and water/meth injection.
2 precision 46mm wastegates
i am looking to launch at 4000 10in converter

ok now the rest of the story this is a new motor and all new setup for me !!

the old motor stock block stroker 396 same carb blow through 2 60-1 turbos
made 870 to the rear wheels on a dyno at 18 psi
2 evalation waste gates ran on 10lb springs only no controler locked down timing at 28 a dig 6 msd box msd coil msd billit dis.
no trans brake foot brake
it was sad 10.0 at 145 1/4 mile
so all this setup is new to me that is why i am being a PIA
all this new stuff its hard to know were to start !!!!!! just so you know i am not some young guy talking crap old guy working on bucket list LOL low 9s

[msdtech1955]

are you running the 75psig racepak sensor or the three bar map sensor?
also, are you monitoring pressure at the manifold or waster gate?

[bonedaddy]

map sensor 23121 on both boxes .this part is good to 30 psi ? i dont plain on going over 20 psi at this time . and at the manifold.

[msdtech21]

Try pulling a total of 10* of boost retard using the 7535. Set the boost controller with 60 psi of CO2 on top of the gate. Start with P= 30 I= 15 D= 0. Plot your boost curve and let that dog eat.