supercharger track time...

[Superv6bird]

I recently installed a powerdyne supercharger on my car and took it to the track tonight. I was expecting low 14's but could only get a best time of 14.931. Any ideas what could have gone wrong?
R/T...1.066
60'...2.147
30...6.198
1/8...9.534
MPH...73.52
1000..12.465
1/4...14.931
MPH...92.03
Performance mods to the car are:
6.lb powerdyne
3.42/LSD
RK sport headers/3 inch high flow cat/2.5 inch flowmaster
Trans-go shift kit
1 piece drive shaft

My boost gauge is reading 7-9lbs. of boost
Fuel Pressure gauge reads 42 at idle 54 @WOT
Temp. was about 68

Any ideas how I can get that time down?

[Silver3800V6FBodyKY]

Launch.


You already have an advantage - I think '97 Firebirds were born faster than the rest of the 3.8s. You've got a lot of mods, you should be in the high 13s, work on the launch.

BTW: Why was your boost gauge reading 7 - 9 lbs of boost when it's only a 6 lbs unit? Most people have problems getting their boost up to 6 lbs, much less more.

[Superv6bird]

I created a little device to help tighten up the supercharger belt so that it wouldn't slip so bad. I can get the belt VERY tight but eventualy the belt strecthes and it needs tightened again. At the track I also added some belt dressing to help prevent it from slipping.

[12secondv6]

Launch is not the problem.
Your mph is horrible for your mods.
What was the temp out?
Hot and humid I would guess??
Powerdynes are not intercooled so this is probably your problem

[Silver3800V6FBodyKY]

<blockquote>quote:</font><hr>Originally posted by Superv6bird:

Temp. was about 68
<hr></blockquote>


Temperature was 68, that's great weather to run in.

[Superv6bird]

I agree, I expected the MPH to be much higher too. The temp was around 68 and it really wasn't that humid. My first run was even worse so i let the car sit with the hood up for 2 hours before I made that run. Before I raced my engine temp. guage still read 160. Do you think there could be something other then the temp. that is causing the low MPH?

[3pointFour]

That sounds really wrong..

I would get that checked out. There are some bolt on 3.8s beating your times...

[Dominic]

Sounds like the blower was outputting 1-2psi, not 7-9... Your launch was fine btwm 2.1 isnt terrible - but thats a good run for a n/a V6, definetly not a blown one in 68degree weather!

[Silver3800V6FBodyKY]

With a blower, it looks like your 60' should be around 1.85 and not 2.1 - that's the only reason I said Launch.

[shortdog273]

He should be at least in the high 13s low 14s.

[slacker69]

yeah i run 14.8 with bolt ons so thats weriod i would say the boost gauge is wrong and you are not getting boost like you think you sould be like 14.2 or so.

[Superv6bird]

I talked with James from vector performance this morning and he had a couple ideas.

He thinks that the crane ignition device might be retarding the timing way too much which would make the car very sluggish. The car runs the same whether I have the timing set to 0 or 20. He thinks it is possible that it is retarding the timing all the way all the time. He said that if I retard the timing to 5-8 it should feel noticible sluggish and mine doesn't feel any different. I am going to go back and look at the wiring on that and see if I can find the problem.

Also he said that my fuel pressure is way too low. With the fuel pressure at 52 under WOT I should hear LOTS of pinging. I think when I get the timing fixed I might have another issue with low fuel pressure.

[Only4U]

<blockquote>quote:</font><hr> I think '97 Firebirds were born faster than the rest of the 3.8s. <hr></blockquote>

97 firebirds meaning just firebirds or camaros too?

[MustangEater8251]

just going to say you shoule be running better times.

i saw joe palermo hitting his speed limiter before the end of the track with his blown 99 3.8L, ran consistant 14 flats.

Main thinks are check your fuel pressure, and i would fix that especially on a non innercooled powereadder.

Also as you are running at the moment, I think you could maybe sneak naother 1/10th or so jsut by practicning and lowringt your 60'.

[Silver3800V6FBodyKY]

<blockquote>quote:</font><hr>Originally posted by Only4U:


97 firebirds meaning just firebirds or camaros too?<hr></blockquote>

Yes, Camaros too.