Also, my car was the before and after testing that they have on their website. Same day, same dyno, same pulley and same fuel/timing map results:





Anyways, sorry to OT VAS.

Congrats on getting your blower back finally!

 

thanx, pm ok by you.

sorry OP for jacking thread.

 

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.

 

I would suggest that you triple check the hose coupler that is on the volute. I have had it happen where it is tight but it is just a bit to far back on the taper and it acts like a boost limiter and allows air to pass at a certain pressure.

 

which one? I got so lostt lol sorry

 

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.

 

thats a HUGE boost leak. it shouldnt be hard to pin that down.

 

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 )

 

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.

 

yeah u can do the cog belt, mine was squeaking one day so i did it in a parking lot in like 2 mns..just loosen it up, hold down on it and tighten it while pushing down a little..it doesnt need to be tight....the serp. belt needs to be tight

 

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.

 

no I havnt messed with the BPV. should I?.. I mean I havnt touched it since I first put the blower in 4K miles ago. 7 threads on the bpv, everything is good on that side..

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.



hmm... seems like tomorrow iam going to tighten the belts more. They fell SO! hard though.

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.

 

Try boost leak test.

 

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.

 

yeah im going to do a run now... Iam using gates belt as well.

 

dont tighten that cog belt though, there should be some play in it..u will know if its loose cause it will squeal a little after it gets warm..

 

a cog belt will never squeal. it will break teeth. You mean serp belt

 

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.

 

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

 

yeah man like i said thats the serp. belt that needs to be tightened to make all your boost, not the cog belt..i too have lost boost to a tight serp. belt so (i thought) and tightened it up more and gained my boost back