dman

iTrader: (5)

louis - good idea, i considered mentioning that. I had a T-netics racegate that was stuck shut. luckily i put some compressed air to the port prior to bolting it on the car. it took some WD40 and a tap or 2 till it opened

LS1Silverado05

iTrader: (41)

I took the wastegate apart today and it is definetly the large red spring in there. Visual inspection and blow/suck inspection showed no signs of a faulty/damaged diaphram.


I got the impression when he said that, that its not frozen shut..

CamTom12

iTrader: (1)

If you get a chance, I'd really like to hear that exhaust set-up, idling and driving and getting into it!

spaz1

iTrader: (9)

It was too small.. It wouldn't let enough bypass to keep the boost low.

98Z28CobraKiller

iTrader: (17)

I took off the hot side and brought it to Dave's house again. He cut off the 1 3/4 pipe that I had feeding the 44mm wastegate,he bent me a piece of 2 1/2 and welded it on. We popped open the new 60mm wastegate to see what it had for springs. It was loaded with 2 springs. The WG came with one more spring in the box. That one felt comparable to the 11 lb spring in my 44mm so I took the other 2 out in favor of the one middle sized spring. I hope to get it put together and take her out for a spin early in the AM tomorrow. If I can get the boost down under 12 psi, I'll be at the track Wednesday for some shakedown passes.



Did some tuning today. The spring that I used got me to 13 psi. I need to try one of the other 2 springs. Should get me down to about 10 psi. I would leave it at 13 but the fuel pump wont support it. Injectors are pretty much going static to keep the air fuel correct. Still a touch fat up top (10.5-11.00). I went ahead and tuned it with the 13 psi spring in it only going to 6K RPM. It feels pretty nasty and pulls clean the whole way up. Another good reason to drop boost is because the converter is too loose with this combination shift point/power setting. I should be ready for Wednesday.

dman

iTrader: (5)

sweet, i'll ride out and watch.

98Z28CobraKiller

iTrader: (17)

I'm almost ready for that fuel pump.

cjg454ss

iTrader: (27)

twin walbros and 60s got me to 14psi with that turbo at 120% inject duty. im going with the ford 80s next. nice setup. our cars have identical setups, the exhaust everything, i just have my 4inch exhaust and hot ppiping ceramic coated. i have the tail 44 gate, i can get down to 10psi with a 9psi spring. cant wait to see some track shake down passes. my guess is 6.50s at 10psi, ask me how i know

Ryans_pewter_ss

iTrader: (9)

I'm ready to do mine Chris! Gonna get rid of all the nitrous stuff.

98Z28CobraKiller

iTrader: (17)

I'm running the single racetronix walbro setup and stock lines. I've already bumped up to the 80# injectors. At 13 psi I was seeing 130% duty cycle. My problem is the pump. I'll be getting a MagnaFuel 1200hp pump here shortly and upgrading to a boost reference return style system.

I'm hoping to see some 10.o's tomorrow in the 1/4 with some low to mid 130 mph. If the power is there, the suspesion will put up the number.

I put the lightest spring in the wastegate this afternoon and it gave me 6 psi. Injector duty cycle went down to the 42-44% duty cycle range. Kinda weak. Since changing springs is kind of a pain in the ***, I decided to make myself a ghetto manual boost controller just for now. I ran down to Home Depot and Advanced Auto and spent $25.00 for this stuff.







Put it together to look like this.







And spliced it in to the compressor boost ref port. After a couple of adjustments (very sensitive), I got to 9-10 psi at 55% duty cycle. So I'm pretty much ready to go for tomorrow.

camarokid94

iTrader: (2)

good luck man waiting for results

98Z28CobraKiller

iTrader: (17)

First, don't use the valve that I used in my ghetto boost controller. I was screwing with that damn thing all night. You turn that thing a hair and it swings 5 lbs+. I finally got it to 11-12 psi and ran a 10.55 @ 132.23 w/ a 1.64 60' on Nittos. I had to leave much softer than I am used to. The Mickey Thompson will be on for the next time out. I was hoping to go a little quicker but 2/10 off the 60' would net me the 10.0 pass that I was hunting for. Race weight was 3680 lbs. DA was about 950 for this pass.

Silver_TransAm

iTrader: (2)

I tried the ole homemade boost controller once to with the same out come. I think i saw 18psi once for a second, luckily I was watching the boost gauge like a hawk. Lessons learned.

White.Lightning

iTrader: (53)

Any videos?

dman

iTrader: (5)

you shoulda called, used my manual controller.

BTW, nice time for a stock motor on 12psi... look out when you crank some boost into it

Nimitz87

iTrader: (17)

subscribing over here...nothing but impressed.

Chad

V-seriesTech

iTrader: (5)

Not bad for the first track visit.

98Camarod

iTrader: (43)

What was your 1/8th mile time and mph?

98Z28CobraKiller

iTrader: (17)

I think that there is video of an earlier pass in the mid 11's on 6 psi. I have to try to locate it. Don't think that the 10.55 was caught on video. I did get a few pictures in my email.




I'll get the 10.0 for sure Wednesday night. I can drop 2 tenths off the 60' on the mickey's and turning up the 2 step from 3400 to 4000 rpm will get me another couple lbs of boost out of the hole. Should be good for a high 1.3 60'. Turning up the rev limiter may help me get another mph or 2 also as I was off the gas going thru the traps.

I flaked out on calling you last Sunday as I was dealing with getting the bigger wastegate on.

I believe it was a 6.74 @ in the low 105's on the 10.5 pass. I made a previous pass to the 1/8 and ran a 6.68 @ about the same mph with a slightly better 60'. I can knock a solid 2 tenths off at the 60' with the Mickeys. It'll go sub 6.5 on Wednesday night.

V-seriesTech

iTrader: (5)

Was wondering if you had a two step or not. Sounds like you've got the bugs worked out. Don't sweat the phone call, i've been having issues with my car lately so I don't even have it. Thinking of putting it down for a while to add ****. Anyways, maybe we'll take a ride up to pbir next week.