turbo ls vtech problems
09-01-2011, 08:45 AM
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turbo ls vtech problems
ive been working on tuning my buddys built ls vtec with a sc61, but it just doesnt seem to make power at 20lbs it only made 325hp with 19* timing.
the motor is:
eagle rods
wiseco pistons 8.5 to 1
b16 head
drag manifold
sc61
once it hits 7k the power just drops off like the motors choking. from everything ive seen 15lbs to should make almost 400.
the motor is:
eagle rods
wiseco pistons 8.5 to 1
b16 head
drag manifold
sc61
once it hits 7k the power just drops off like the motors choking. from everything ive seen 15lbs to should make almost 400.
09-01-2011, 12:11 PM
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Re: turbo ls vtech problems
he was having problem before with vtech not engaging before the motor was rebuild. were using a s300 to tune it. before the rebuild when you set it to follow vtech it would never change maps but now its change to the high speed map just fine. im gonna have some more time with it this weekend gonna check the cams and timing.
09-01-2011, 12:57 PM
#5
Re: turbo ls vtech problems
he was having problem before with vtech not engaging before the motor was rebuild. were using a s300 to tune it. before the rebuild when you set it to follow vtech it would never change maps but now its change to the high speed map just fine. im gonna have some more time with it this weekend gonna check the cams and timing.
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09-02-2011, 08:24 AM
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Re: turbo ls vtech problems
First issue I see is the Drag manifold. What cams is it running? Exhaust size could also cause an issue. Injector size, pump type and fuel type?
09-02-2011, 09:53 AM
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Re: turbo ls vtech problems
walbro 255 pump
base pressure is 40psi at idle
aem fuel rail
550cc injectors running 78% duty cycle @ 7k rpms
93 octane gas
2.5 down pipe
stock cams i believe with cam gears not sure how thye are set though or if the person who put the motor back together set the right
no dyno sheet at the moment
base pressure is 40psi at idle
aem fuel rail
550cc injectors running 78% duty cycle @ 7k rpms
93 octane gas
2.5 down pipe
stock cams i believe with cam gears not sure how thye are set though or if the person who put the motor back together set the right
no dyno sheet at the moment
09-02-2011, 10:06 AM
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Re: turbo ls vtech problems
i have in problems with my b16 when the vtec is suppose to ingage it makes a loud bogging sound and cuts out and i cant seem to find the problem. will some one help me please. i changed the solonoid and im still geting the same problem. also it seems like all my power is not there.
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