Maybe at first, but then it was consistant and would do it all the time.

 

I'm seeing just over 6.5 psi.

 

Went to the track today again with Kevin (derelict) to compare his stock pulley to my HBP.

He managed a 13.7 @ 103. He was pulling 2.0 60's though.
Sticky tires + SSR comps > me

I was playing with the launch all day and managed to trap at 105 3 out of 4 runs with my last run being 104. BUT.............




My blower belt has slipped a little. It sorted jumped up just barely on to the pulley so it isn't seated exactly where it should be in the pulley. I'm losing about a 1 psi because of it. I'll have the problem fixed Monday morning.

 

Blower belt slip:

 

Replace that belt or it will continue to slip, not shift, but slip, from being stretched on the back part of the belt. Make sure its on correct, on all the pullies, before it's tightened and it should not jump off, and shift like that.

 

Kevin (derelict) has the same problem and we had the installs done at different locations. He also doesn't have the HBP.

So I should completely replace the belt? It only has 200 miles or less on it.

Could it have something to do with the pulley spacers on the end of the shaft? Maybe I should take one out to line it up better?

 

I was thinking about this: I trapped at 92 stock. I've gained 13 MPH.

 

You should re-use the belt to resolve whether or not you have an alignment issue. It can be caused by misaligned pullies, but it's also easy to miss one of the bottom pullies by one groove if you're not careful. Put it back on and try it for a while to see if it shifts again. Irregardless of why it shifted, it is now stretched on the back side, and will most likely slip at high boost.

 

I suspect he will add at least 40 WHP with the IC and more boost. His trap may be upwards of 109 - 110.

 

I had that same problem. What I did was used a 3ft extension behind the 14mm wrench on the pulley bolt, asked a friend to hand on it while I am tightening the adjusting bolt. J/K but I did have to tighten it a lot more than what comptech recommend. If I didn't I will see not see full boost.

 

I'm losing tons of boost right now with that belt. I boosted it twice WOT to the top of 2nd gear on the way home from dinner.

Peak boost is reached at 5000 RPM and it is just over 5.5 psi. Then by readline it is under 5 psi. I need to use the damn belt that comes with the kit not the one the dealer put on. I'm gonna go to another shop and have them install it because the dealer is worried about damage to the pulley installing the stock belt.

 

Steve,

If I were to use the I/C with just the HBP and not the max boost pulley what is your best estimate on power increase? The car already feels amazingly fast now. I might want to save that next increase for later down the line.

Also, using that set up (I/C with just HBP) I wouldn't need the E-Manage right away correct?

I'm sure with the I/C and just HBP I'd lose a little boost, but I bet i'd pick up a few ponies.

Your thoughts?

 

Yep your belt is slipping. Here is the dyno I had with a slipping belt, you will see a drop in HP and torque at about 6K. At that time my belt was coming off the pulley and felt very tight. Well I guess it is not tight enough

https://acurazine.com/forums/showthr...3.5+conversion

 

Which should be very close to a sub 13 second pass depending on how well I get off the line.

 

mrsteve...congrats man I'm glad everything worked out for you...hopefully you can get under the 13.5 mark!! Good luck

 

Use the emanage to lower your fuel pressure if nothing else. Reliability, longevity, and a flat A/F ratio are enough reasons to do the eman.

 

mrsteve, look at the other pullies and see if they are all off by one groove also. if they are and it's staying there, it could be the origional installers missed one of the other pullies, causing it to jump. If so they should buy the new belt. The belt size should not be the problem.

 

Where the belt meets the alternator pulley it is also off by 1 groove.

 

Track pics from today:

 

CONGRATULATIONS MrSteve...those are some awesome track times. Looks like your are having fun!!
As for the tranny not shifting into gear that has happened to me as well, it's even done it once with this new rebuilt. These are very faulty by design and modifying only improves somewhat. Unfortunately they have been the weak link in our cars.
As for the belt try and get a GY "gator back" they work very well. But at least you are getting good boost, I never got 6.5 lbs. out off my HBP it only did 5.5 and your getting that with a slipping belt.
Can't wait to see your dyno....it should be very impressive.

 

I would suspect that half that gain would be realized without the extra boost.

Nope, you would need the E-Manage with just the IC and HBP. When I installed the IC, my new SC pulley was not in yet. I had no adjustments going on in the E-Manage either. The car went lean right away. I was runnign mid 11:1 ratios, and now I was up at 13:1.

That, and the previously mentioned ability to lower the fuel pressure to a safe level makes this a serious benefit.

 

I max out at 5.5 lbs also with the HBP. I use the gatorback belt and it doesn't slip anymore. I really tightened the hell out of it though.

 

This was my best slip yesterday - ironically, my first run. Much relieved since my last trip to the track only yielded a 14.2 @ 99. My belt slipped again as well at the track, and on the way home, I heard something scrape underneath my passenger-side footwell. When I got off the highway and turned the music down, I noticed there was no whine when I got on it. Sure enough, I popped the hood when I got home - belt was completely gone. This is the second time the belt has slipped up onto the edge of the pulley. Is there any surefire way to prevent it?

edit:
Quote of the day yesterday from Steve:

"The guy in the that Grand Prix kept looking over at me like he had a chance. Then he saw me put my helmet on."

 

kick ass dude!

cant wait to get boosted.

 

steve w/ the IC you think you'll be crossing the traps in 4th???

 

Most definitely. I already am at 7100 rpm when I cross now.

 

Congrats steve... It always makes you think over once you see a super charger install post, that why you havent you installed one yet.. If it weren't for my two tranny dying the last 10K, I would have been in the SC Club... Anyways excellent times, and all the best with the SC... Let us know with the IC, how much more of a monster the car will be.

 

Congrats on the S/C install Steve. Glad to hear everything went well with the install and that problem with the belt is an easy fix.

Nice work getting that 13.5, like matt said that’s the quickest S/C CL we've seen minus the ones with the intercooler. Looking forward to seeing some dyno #’s as well.

That first night driving after you picked her up I bet you looked like this behind the wheel

Keep it safe out there and enjoy.

 

where are your time slips chap? are they sitting in the same box as Smittys?

 

Yeah i have my time slips upstairs but i didn't post em.

All is basically says is Installation time 17 hours

Nothing fancy.

 

they let people on the track with passengers?!?!?!?!


congrats on the SC tho! Nice times

 

Yes as long as the passenger is wearing the same safety equipment as the driver. In the case of the 350Z the only safety equipment needed was a seatbelt.

 

damm i have check the gen forum in a whilei guess. congrats ur finally in the 13'z. now i suspect the track is gunna be more like crack for u then befor if that is possable

 

No, not really. I might hit the track two more times this year. I don't want to beat on it too much. And until I upgrade the rubber/wheels I really can't hook up that well so I don't even launch it, I easily take off like I would from a light and really don't get on the throttle for at least the first 30'.

 

yup, his smitty's, titand19's and scalberts are all buried under ground

 

yup

 

I don't blame the 6speed guys really. All the wheel hop they get really takes a beating on the car's front suspension. No more hard launches at the track for me.

Well maybe ONCE MORE once the I/C and new tires are installed.

 

yea i guess, we def have a great advantage from a stop, but they are deadly from a roll

 

there are only 3 cl-s that i fear.

 

Call 'em out

Allmotor
Blue
Scalbert? Because his is stock now