My Vortech 2.87 setup & dyno numbers =)
07-13-2009, 11:29 AM
#63
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not a problem!..
guys... all the belts are tight, vaccum lines are tight and in place.. double checked everything... STILL 5 psi... son of a *****...i check the intercooler couplers and everything else, there all tight!.. FI is not giving me a headeache.
guys... all the belts are tight, vaccum lines are tight and in place.. double checked everything... STILL 5 psi... son of a *****...i check the intercooler couplers and everything else, there all tight!.. FI is not giving me a headeache.
07-13-2009, 01:25 PM
#66
Check the hose coupler that is attached to the discharge of the supercharger. The problem your experiencing is identical to one we experienced on our Porsche. We checked and checked and were unable to find a loose hose coupler or anything. We only found it on the dyno when it would finally allow air to pass in between the coupler and the supercharger volute at 8psi under load.
07-13-2009, 05:15 PM
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Guys... ... Still nothing!! I'm done for today! Still can't go past 5 psi . Had problems with the belt popping out of the main pulley, it would just come off 1rib. Figured that one now the belts are rock solid. Still can't go past 5 psi!! Aghhh tomorrows another day, iam running out of options!! ( I need a beer )
07-13-2009, 05:49 PM
#69
you didnt mess with you BPV valve did you? this was a vortech rebuild or a home job? Sounds like a home job, so maybe it wasnt done properly? leaking seals would cause blowby
you also mentioned something about needing 2 people to tighten the cog belt? That is VERY incorrect. Cog belts just have to be snug, but never tight! You should be able to push your serp belt over about 1/4 of the way at proper tension as well.
you also mentioned something about needing 2 people to tighten the cog belt? That is VERY incorrect. Cog belts just have to be snug, but never tight! You should be able to push your serp belt over about 1/4 of the way at proper tension as well.
Last edited by str8dum1; 07-13-2009 at 05:53 PM.
07-13-2009, 06:56 PM
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Guys... ... Still nothing!! I'm done for today! Still can't go past 5 psi . Had problems with the belt popping out of the main pulley, it would just come off 1rib. Figured that one now the belts are rock solid. Still can't go past 5 psi!! Aghhh tomorrows another day, iam running out of options!! ( I need a beer )
1.) belt is so loose that it is jumping off the pulley.
2.) the pulleys arent' aligned properly putting a sideforce on the belt and causing it to come off track.
something is really wrong if that belt comes off the pulley. Mine are tight that a 10 foot pry bar would not get that belt to come out of the ribs.
mine was only boosting to 7psi and i tightened the belts down and instantly got 12 psi. No belt squeel at all, but it was still slipping.
07-13-2009, 08:53 PM
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you didnt mess with you BPV valve did you? this was a vortech rebuild or a home job? Sounds like a home job, so maybe it wasnt done properly? leaking seals would cause blowby
you also mentioned something about needing 2 people to tighten the cog belt? That is VERY incorrect. Cog belts just have to be snug, but never tight! You should be able to push your serp belt over about 1/4 of the way at proper tension as well.
you also mentioned something about needing 2 people to tighten the cog belt? That is VERY incorrect. Cog belts just have to be snug, but never tight! You should be able to push your serp belt over about 1/4 of the way at proper tension as well.
Yes I did the rebuild myself. I mean everything looks rock solid, idk if youve ever done a blower before but it is pretty straight forward, ya know. everything pressed down the way it should be and it sounds normal to me. The seals are holding up fine, no oil or anything.
sounds like 2 things could be wrong with this statement:
1.) belt is so loose that it is jumping off the pulley.
2.) the pulleys arent' aligned properly putting a sideforce on the belt and causing it to come off track.
something is really wrong if that belt comes off the pulley. Mine are tight that a 10 foot pry bar would not get that belt to come out of the ribs.
mine was only boosting to 7psi and i tightened the belts down and instantly got 12 psi. No belt squeel at all, but it was still slipping.
1.) belt is so loose that it is jumping off the pulley.
2.) the pulleys arent' aligned properly putting a sideforce on the belt and causing it to come off track.
something is really wrong if that belt comes off the pulley. Mine are tight that a 10 foot pry bar would not get that belt to come out of the ribs.
mine was only boosting to 7psi and i tightened the belts down and instantly got 12 psi. No belt squeel at all, but it was still slipping.
The problem that I had with my belt coming off is that.. When I changed to the new belt setup, I must of flipped the bottom pulley on the bracket, so it was causing the belt to jump of one rib. 5 hrs later I figured it out. Flipped it, did a quick run. everything was fine.
Im gonna play with the belts a little tomorrow we will see!. Ill update tomorrow or today for that matter its already 1am.
anyways.. thanks for the tips fellas, off to bed.
07-14-2009, 07:08 AM
#74
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oooo, so you already fixed that belt alignment issue.
I would say go ahead and try tightening the belt. Do like 1/2 a rotation on the tensioner and then go do a run and see if you get more boost. Like Tim told me when i was getting belt slip "the belts will feel tight like a guitar string".
If you grab in the middle of the longest portion of your belt and then twist it, it should only twist about 90 degrees or slightly more. if you can physically twist the belt past 90 degrees then you need to tighten it. It's hard on the bearings having it tight, but that's life.
Also, i'm using a gates belt, not the goodyear.
I would say go ahead and try tightening the belt. Do like 1/2 a rotation on the tensioner and then go do a run and see if you get more boost. Like Tim told me when i was getting belt slip "the belts will feel tight like a guitar string".
If you grab in the middle of the longest portion of your belt and then twist it, it should only twist about 90 degrees or slightly more. if you can physically twist the belt past 90 degrees then you need to tighten it. It's hard on the bearings having it tight, but that's life.
Also, i'm using a gates belt, not the goodyear.
07-14-2009, 12:24 PM
#78
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if you're talking about the serp belt that's not entirely true. I was only boosting to 7psi from a loose belt and i had not one ounce of squeel. I tightened it up and instantly was boosting at 12psi.
07-14-2009, 02:45 PM
#79
wrong my friend, a cog belt will squeal a little, after leaving my tuning session at aam a while ago mine was making a little squeal noise at idle, i spit on it and went away so i knew it was that and tightened it up a little and never again..once again this was the cog belt and u dont want the cog belt too tight or u will tear the belt up and shread teeth...and this was only after it was warm