Changed pully, 10 psi holding!!!!!

[98GREENGLOW]

Well I got the one side screw off and now the pully seems to be rusted on or somthing. After you take off the side bolt is it supposed to lift off or screw off? My 2.8 pully should be here any minute and I cant wait to get it on.

What technique did you use to get the old one off?

[ January 15, 2004: Message edited by: 98GREENGLOW ]

[ January 17, 2004: Message edited by: 98GREENGLOW ]</p>

[98GREENGLOW]

I got it off by using a L tool as a wedge. By L tool I mean those small too large black L shaped tools you buy in packs to use as a tightenin & loosening tool on many applications.

Took me about an hour to pry mine off. The first thing I noticed about my 2.8 pully is that it is significaly heavier than my 6 pound pully. Id guess it's 50-75% heavier. I DONT LIKE THAT. The grooves are awesome though.

Well I got it on and will try to put the charger back on right now. Hopefully Ill be letting you know what t feels like soon.

[Mighty Thor]

I can't wait to hear what yours is going to be like. Keep us posted.

Yeah, taking the pulley off is hard. I used an oil filter wrench and hold that firm and steady while I did a counter clockwise with the wrench. I use a pulley puller to pull it off because the rust welded itself to the shaft. It interesting how you did yours.

Here is my plan:
I have another pulley that is much heavier than the original. What I plan to do is take the original pulley to the shop and have it smoothed down to 2.8. I will also have the other pulley smooth out to serve as a back up.

Before I do any of this stuff. I'm going to rebuild my blower by putting in new bearings and belt (better quality than the original. I'm also going to upgrade my fuel. And I'm starting to look around in ebay for an air to air intercooler. Plus I'm going to add a water injection system (either from SMC or Snow Perf.).

Yup this is my plan for this year. If my job holds up that is and my pickup doesn't fall apart on me. But first thing, I need to get headers, and gears.

Then I'm going for a dyno.
[img]graemlins/burnout.gif[/img]

[98GREENGLOW]

Well I got everything hooked up and took her for a spin. The first thing I noticed was at idle I could actualy here a slight wine. I thought that was pretty cool.

The first couple of runs I had about an inch to inch and a half of belt play (I wanted to see how good the grooves were) I never got over 4 psi. So I pulled over and tightened her down to a half inch to inch of play and applied some belt dressing(pyrol).

I let her warm up the dressing for a sec and then took off. I got 7 psi in first gear and then 6 in 2nd gear and 6 in third. These were about the same numbers I had with my 6 pound pully but there was a noticable SOTP differrance. With my new pully the 6 or 7 pounds was like BAM!!! And then it changed gears and bam!!!!!6 psi.

Not the typical Bam 4-5 psi and then build it's way to 6-7 pounds like my 6 pound pully. This was a straight up 6-7 psi through out most of the rpm range. I actually started yelling while driving the car Saying things like HOLY SH** and DAMMMMM.

Even though it was a noticable difference I was still disapointed with the numbers. So I realized to get 9-10 psi I was gonna have to tighten her down to the recommended half inch of play.

No problem....I knew I would have to do this anyway.I was just testing out the grooves to see how good they could do on a loose belt. So I was ready to tighten her down when I noticed that she couldnt tighten down any more!!!!!! The smaller pully had made my belt to long for the JOHNDPOWERRAPP!!!! Man am I pissed!!!!! I cant get my 9-10 pounds till I take the charger back off and put on a shorter belt.

So to anyone else going to a smaller pully. GET A BELT ATLEASTE ONE INCH SHORTER. Im gonna try and find me a nice 6 rib 103.5-104 inch belt tomorrow. I can probaly have it on in 45 minutes, so it's not that big of a deal.

TO BE CONTINUED............

[98GREENGLOW]

Hey Thor....Eighter tell me right here or email me about your experience with the SMC kit. It is defiently my next modd. But I wanna make sure that I dont have the bogging problem you posted about once.

Actualy it would probaly be better if you just started another topic about the SMC since I know atleaste me and Riles are planning on getting it soon. Im sure others are interested too and your the only one with ay experience.

Thanks for all the support youve given me. It's weird but I really feel like were friends even though I have no idea what you look like. Laters

[John_D.]

Congratulations on getting the new pulley on!!! [img]smile.gif[/img]

Yeah, if you like that 6-7 psi with the loose belt, you'll really like the 9 or 10 psi with the belt tight. :D


If you can't find a 104 or 103.5, there is a way to get a 103 on it... You have to take the bolt out of the idler pulley to do it. Just leave the bolt behind the bracket, no need to work it out from behind the bracket. Set the idler pulley to the side.

Then route the belt around all the other pulleys. Hold the idler pulley where it belongs. You can almost slide the bolt back in at this point. Just push against the pulley, to slightly stretch the belt, and you should be able to get the bolt in, and start the nut on it.

When you let go of the pulley, the belt will hold it in place, but it will be at a little bit of an angle. That's ok, because as you start to tighten the nut, it will straighten out on its own.

[Rob 94Hawk 319]

I got the Dayco 1038K6 it's 103.8" (thus the 1038), and it seems to be perfect.. I still need to modify the oil pump housing a bit, but that won't be a problem.

[98GREENGLOW]

All I could find was a dayco 103 inches long. Hope is not to hard to get on.

[98GREENGLOW]

Well I finaly got the new 103 inch belt on...Took me about 45 minutes to take the blower off and put the new belt on. I HIGHLY RECOMMEND GETIING NONTHING LARGER THAN A 103.8 BELT!!! THE BELT I HAD ON PRIOR TO THE 103 INCH WAS A 104.5.IVE EVEN HAD TO TGHTEN DOWN THE 103 INCH SOME.

Well I took her out for a quick spin. The results were 8 psi in first gear, 8 psi in second gear and 5 psi in third gear(I can never stay in third gear long enough to get good boost. I always slow down around 90 or so to be safe.)

These numbers were good and better than yesterday but nonthing I hadnt seen before on my 6 lb pully. So I decided to pull over and tighten the pully down slightly. I put the idler pully down about a half inch. This made me have a half inch play in the belt.

The results were very impressive. First gear was 10 psi (never seen that in first before, my best with the old pully was 8 pounds in first) 2nd gear also gave me 10 psi and 3rd gear was building quick from 6 psi but I was scared to drive to fast in the dark again and slowed down.

I did about 5-7 runs and each one resulted in firs gear giving me 10 pounds.I was very impressed with the new pully and cant wait to go to the dyno.

[98GREENGLOW]

I have a dyno appointment at 1100 today. I havent told my wife yet so it's still up in the air at this point.Hopefully Ill be getting you 10 psi numbers today.

I was just thinking that this pully is soooo good. Even on a slipping belt you still get 7-8 pounds. I THINK IM IN LOVE. Im just kinda scared that 10 pounds may be a little too much for our engine though??????????Time will tell.

[Tyler]

cool.. im anxiously awaiting the results! goodluck

[redbird00]

sweet can't wait to see #'s, been following this for a while and i wish you the best of luck...

merlin

[12secondv6]

Results????

[John_D.]

That's great news Laron!!

[98GREENGLOW]

Well the results were not what I wanted.

Last time I went for my Dyno tune when the car was running horribly the car would not go pass 207 rwhp. I figuered it was because of all the stuff wrong with the car, so I was happy with the 207 and new it wuld be much better once I fixed everything.

So I redid my wires and plugs......Made my car not run so rich and put on a 10 pound pully vrs the 6 pound pully I used on my last dyno tune. Shorely this time I wuld do MUCH better.

But that was not the case. My first run resulted in 207 rwhp. My boost was reading 10 psi. I was like WTF????? Then the guy explained to me that the reason Im still only getting 207 rwhp even though I corrected so many things is because I should be getting my peak numbers in third gear at 5800-6200 rpm................Instead my govener is kicking in at 95 mph and Im only getting up to 4800 rpms when the govener kicks in. All the guys there tried to tell me that 207 rwhp on a v6 at only 4800 rpms was good but I knew better.

They said the reason my govener kicks in so early is because my computer thanks it has 308 gears but it really has 342's. I was pissed off and told them to give me a minute and let me hook up my SCU 2000. We tried it many times but the stupid thing didnt want to go in third gear.

I said screw the SCU and unhooked it. I then told them since no matter what we do the car wont go past 207 rwhp in third gear so I want to dyno it in second. They said no problem and dynoed it in 2nd gear. The result was 217 rwhp at 5600 rpm and 56 mph.

I was pissed..... Because of the stupid govener I couldnt get any real numbers...The three guys who worked at the shop all did some caculations using the third gear and second gear pulls and they all agreed that with the way she was pulling when I hit the govener and the way the ark was rising that with the additional 1200 rpm's the govener stole from me I should be in the 240- 260 range at the wheels.

They said that I was making roughly 41.5 rwhp for every 1000 rpms. Thats why I made 207 at 4800 rpms. The additional 1200 rpm's should have given me another 40-50 rwhp. SURE THERE CALCULATIOS ARE NICE AND ALL BUT I DONT CARE ABOUT WHAT SOMTHING SHOULD BE ABLE TO DO!!!!! I CARE ABOUT WHAT I SAW. AND IM PRETTY UPSET ABOUT THE GOVENER AND THE SCU CRAPPIN OUT ON ME.

Well if any one else has what there numbers were at 4800 rpm's in third gear I would really appreciate it. I figure this is the only way I will be able to tell what kind of power Im really putting down.I SHOULD HAE DONE ONE RUN WITH THE BLOWER PIPE DISCONNECTED, THEN I WOULD BE ABLE TO SEE WHAT WAS REALLY UP.

Guess the track will be the only way I can tell how much more power I have now.....Till I get some computer programming anyway. I was gonna dyno again next month after I install my SMC alcohal/water injection kit..........But now I dont know....Its still not gonna go pass 207 anyway. LATERS