first outting

[gringo76]

well finally took my sy to track to get a starting point. rpm stage one turbo, alky kit, 3 inch exhaust, turbo tweak chip. she ran a 13.1 @ 103. she drove home so a good trip. kept have boost issues during shift's. would make 23 lbs at high rpm and pull hard then soon as shift boost would drop to 14-15 and have to work its way up and just killed it. couldnt figure it out, a/f looked good around 11.0-1, timing was around 13-14 at wot, never ran out of fuel just killed over during shifts and lost boost. so after a couple tries I left and on way home I hit it and through the shifts a steady 20lbs and no drop and was pulling through whole rpm band. I was like wtf is diff then I relized the only diff was I had the torque converter switch off. don't know if this I common or if I was doing it wrong but as I would stage I would turn on the switch so it would engauge as soon as it hit second gear and it did but it was pulling motor down so hard between shifts it knocked rpm and boost down with it. should I only engauge it in high gear in upper rpms so it does not kill it. I believe it deff got a solid 12 in it with out t/c lock up on just wish I would have thought of it before I had left. by the way this is my first sy and first outing with it to the track so was trying to get use to it, staging and so forth.

 

[gringo76]

Re: first outting

oh and just put a b&m 2400 lock up converter in it

 

[Syclone22]

Re: first outting

Had this same issue with the lock up switch on better make
a few runs with the switch off so you can compare times ..

 

[jeepruby04]

Re: first outting

Did you data log your runs? That would really help you see what's going on with the shifts. The shift points are prone to KR which can cause boost issues depending on how the chip is set up. What was your 60' time?

 

[gringo76]

Re: first outting

Did you data log your runs? That would really help you see what's going on with the shifts. The shift points are prone to KR which can cause boost issues depending on how the chip is set up. What was your 60' time?

60 ft was 1.9, was launching at 2200 rpm @ about 4 lbs of boost and the most spark retard I seen was 1.1 and I only saw one count for the knock for the whole run

 

[gringo76]

Re: first outting

Had this same issue with the lock up switch on better make
a few runs with the switch off so you can compare times ..

ya I wish I would have thought of this before I left track lol. like I said on way home with t/c lock up switch off boost never dropped off between shifts and felt strong. but at track it felt like motor would actually bog down between shifts like the steam got knock out of it and as rpms would climb she start pullying hard again then another shift bog.

 

[gringo76]

Re: first outting

I got a log with my data master but can't figure out how to post it to save my life. can somebody guide a retard on how to do it

 

[Aeroking]

Re: first outting

when did you lock it up? outta the hole, or halfway through a gear?

if you lockup to early in a gear it will pull the rpms down low enough that the boost falls off. Unless you're making a buttload of torque down low, you want to lock it up higher in the powerband. The 700R4 won't engage lockup until the 1-2 shift, even with the switch on. So if the switch is on, and you hit 1-2 you dont have enough exhaust pressure to keep the turbo spooled and the boost trickles off.

 

[HAMMERHEAD]

Re: first outting

Your truck should have run at least a high 12. If your 60 ft was in the 1.7's, you would definitely seen a 12 sec time slip. I went a 12.90 first time ever at 18lbs with only a ultimate chip and cat back exhaust. My 60ft was a 1.78 with wheel spin. You definitely have a 12 sec truck once you get a better tune.

 

[gringo76]

Re: first outting

when did you lock it up? outta the hole, or halfway through a gear?

if you lockup to early in a gear it will pull the rpms down low enough that the boost falls off. Unless you're making a buttload of torque down low, you want to lock it up higher in the powerband. The 700R4 won't engage lockup until the 1-2 shift, even with the switch on. So if the switch is on, and you hit 1-2 you dont have enough exhaust pressure to keep the turbo spooled and the boost trickles off.

ya that's what it seem like. turn switch on at starting line so it was engauging as soon as it hit second and all the gears forth. leason learned. I try again next fri with switch off

 

[Aeroking]

Re: first outting

i would also try pulling the boost down and adding a few degrees of timing. meth with low timing might be hurting you. :2cents:

 

[gringo76]

Re: first outting

cool thanks for the tips. with t/c switch off it makes around 19-20 lbs about 3-4 less than converter locked up on top side or are you talking lower than 19-20?

 

[Aeroking]

Re: first outting

14deg seems really low for spraying meth. I'm assuming you're spraying straight meth. I would set the boost for 20 and bring your timing up in the high teens, see how it reacts.

 

[gringo76]

Re: first outting

14deg seems really low for spraying meth. I'm assuming you're spraying straight meth. I would set the boost for 20 and bring your timing up in the high teens, see how it reacts.

Ya straight m1

 

[gringo76]

Re: first outting

Your truck should have run at least a high 12. If your 60 ft was in the 1.7's, you would definitely seen a 12 sec time slip. I went a 12.90 first time ever at 18lbs with only a ultimate chip and cat back exhaust. My 60ft was a 1.78 with wheel spin. You definitely have a 12 sec truck once you get a better tune.

I think it will too just when it shifted it bogged down and lost a lot of power. I will try next fri with t/c switch off and see how she does

 

[SY2932]

Re: first outting

Your truck should have run at least a high 12. If your 60 ft was in the 1.7's, you would definitely seen a 12 sec time slip. I went a 12.90 first time ever at 18lbs with only a ultimate chip and cat back exhaust. My 60ft was a 1.78 with wheel spin. You definitely have a 12 sec truck once you get a better tune.

Yep, the rule of thumb is for every .1 of a second you drop in your 60' time equals .2 quicker ET's. My truck bogs down a bit when I lock up the TC:



That vid was taken when I was still running the stock turbo over ten years ago. I had a built transmission with a 3K stall and 93 octane pump gas with Xylene (paint thinner) 3:1 ratio, to keep knock in check. Boost was 20 pounds via my Ultimate Chip.

 

[gringo76]

Re: first outting

ya I need to work on launch a little. my two step was at 2200 and anything over about 4-5 lbs of boost and it was pushing threw the brakes. I was working harder on trying to figure out why it was dying between shifts. it was slowing down enough that I belive it will make more of a diff than the 60ft at this point. but another trip to track will tale the tale!

 

[dgoodhue]

Re: first outting

ya I need to work on launch a little. my two step was at 2200 and anything over about 4-5 lbs of boost and it was pushing threw the brakes. I was working harder on trying to figure out why it was dying between shifts. it was slowing down enough that I belive it will make more of a diff than the 60ft at this point. but another trip to track will tale the tale!

How do you launch your truck at the line?

Do you just push on the brake and step on the gas?

Or do you rev in neutral while pushing on the brake and then build boost with the gas?

 

[dgoodhue]

Re: first outting

A good running Syclone can run mid 12's with the stock turbo and ~18psi.

Are your tires older and hard (i.e. they don't hook up)? It seems that you pushing through the brakes, but I know my Syclone would do 1.8 60's with 4-5psi launch (and old hard tires) I wonder if the Alky is too rich off the line and affecting your launch.

 

[gringo76]

Re: first outting

Pump brakes, ease into light with part throttle then on second bulb mat it to floor until she hits two step at 2200. It will sit there until boost get to about 4-5 then starts to try and push threw.