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lets talk boost (esc kit)

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Old May 8, 2011 | 09:11 PM
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Default lets talk boost (esc kit)

i have a 383 with 9.5 to 1 comp. ls6 heads fully ported, 224 228 600 600 lift cam ect...

also i have a 8 rib convesion on it with a Innovator west balancer and a 3.0 pully the kit is a novi 2000 from ecs i have very little belt slip if any. the 1 to 2 shift the boost is bouncing around 5 or 7 pounds and when i get it in high gear it hits 9 psi its not very steady and all over the place and seems really low for my setup. i made the same boost last sumer with out the Innovator west and 3.0. )i had a stock balancer and a 3.25 pully with a 6 rib also theres no loose hose or leaks ect


thanks for any help or ideals
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Old May 9, 2011 | 11:10 AM
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anyone got any advice or have seen this?
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Old May 9, 2011 | 01:26 PM
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Originally Posted by everydaydriverz
anyone got any advice or have seen this?
If you dont have a leak then it looks like belt. I had belt slip with only the 8 rib set up on mine. I then went to flip drive and the from a 3.25 pulley to a 3.0 pulley and making alot more boost and H.P with no belt slip now with just over 18 on the boost gauge. Robert Give BLOWNBLUEZ06 a p.m. on your post and see what he tells you..
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Old May 9, 2011 | 03:49 PM
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Ya I had similar with my 8 rib setup ecs kit,I was @ the tuner on thedyno& crunch time ,car wasntmaking over 8lb of boost & iafter numerous calls. To chris & doug we realized the tensioner was sittingaround 2.00 pm on the clock, changed the idler pulley to another slot & gained 200rwhp ,not saying this your issue butthis was an issuei had @1 time & was fixed by an idler pulley slot swap,this will help allow more belt wrap around the bottom of the balancer,if u don't have the tensioner wrench byall means get 1, u can clamp it to ur cradle. Take care of buisiness & then tighten the top tensioner before letting the clamp loose on the bottom tensioner,this will help hold the bottom tensioner all the way out & that's what u want with the ecs kit,goodluck with it,jd

Last edited by fsuforever; May 9, 2011 at 07:03 PM.
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Old May 9, 2011 | 08:55 PM
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Originally Posted by everydaydriverz
i have a 383 with 9.5 to 1 comp. ls6 heads fully ported, 224 228 600 600 lift cam ect...

also i have a 8 rib convesion on it with a Innovator west balancer and a 3.0 pully the kit is a novi 2000 from ecs i have very little belt slip if any. the 1 to 2 shift the boost is bouncing around 5 or 7 pounds and when i get it in high gear it hits 9 psi its not very steady and all over the place and seems really low for my setup. i made the same boost last sumer with out the Innovator west and 3.0. )i had a stock balancer and a 3.25 pully with a 6 rib also theres no loose hose or leaks ect


thanks for any help or ideals
Something doesn't sound right! With that pulley and the 8" crank you should be making over 15lbs of boost! Make sure your pulleys are aligned properly and as mentioned the tensioner next to the crank needs to be between the 12-1 oclock position...you may need a shorter belt.
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Old May 10, 2011 | 01:23 AM
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Originally Posted by 95vettski
Something doesn't sound right! With that pulley and the 8" crank you should be making over 15lbs of boost! Make sure your pulleys are aligned properly and as mentioned the tensioner next to the crank needs to be between the 12-1 oclock position...you may need a shorter belt.
this is what i was thinking also my belt is super tight and does not slip we checked this my looking back at the log and watching the volts they looked alright i don't know whats going on the this thing......could my head unit be messed up what happens when they go out or break or need a rebuild? thanks
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Old May 10, 2011 | 08:48 AM
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Originally Posted by 95vettski
Something doesn't sound right! With that pulley and the 8" crank you should be making over 15lbs of boost! Make sure your pulleys are aligned properly and as mentioned the tensioner next to the crank needs to be between the 12-1 oclock position...you may need a shorter belt.
That's what it sounds like to me.


Originally Posted by everydaydriverz
this is what i was thinking also my belt is super tight and does not slip we checked this my looking back at the log and watching the volts they looked alright i don't know whats going on the this thing......could my head unit be messed up what happens when they go out or break or need a rebuild? thanks
The belt can be very tight, but if the tensioner is not fully opened when the belt stretches during a WOT pull it will bottom out the tesioner and cause the boost to drop.

You should be making a lot more boost then you are, so something is definitely off. Feel free to call the shop if we can help you with anything.
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Old May 10, 2011 | 09:35 AM
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Originally Posted by DOUG @ ECS
That's what it sounds like to me.




The belt can be very tight, but if the tensioner is not fully opened when the belt stretches during a WOT pull it will bottom out the tesioner and cause the boost to drop.

You should be making a lot more boost then you are, so something is definitely off. Feel free to call the shop if we can help you with anything.
Exactly,I'm just an old dumb welder ,who's inhaled 1too many stick rods :don't pay any attention to me

Last edited by fsuforever; May 10, 2011 at 09:40 AM.
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Old May 10, 2011 | 02:33 PM
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ok thanks for the info i will check it out and post my update
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Old May 10, 2011 | 03:48 PM
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Make sure the BOV is sealing under boost.
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