There's a good amount of lag in 1st which helps a ton. Right when I hit second, I get some lag and then bam it starts to spool (full traction in 2nd). Third gear pulls good to, but after going into 4th from 3rd, it seems SLOW AS HELL. I watched the boost gauge it builds boost slowly, but still doesn't seem to pull too hard.

Will tuning help this a lot? or is it just the fact that I have too much lag from the turbo? That's pretty much all im wondering.

BTW im still on stock clutch. Still need to put in the 6 puck and lightweight flywheel (which IM EXTREMELY glad I got now....dont know if i should have gotten the 8lb instead of the 12 though )

Thanks for the help guys. Compression's still 180psi accross the board on the engine after 5 weekends of driving. I've hit 9psi a couplie times untuned on the hack as well. The hacks been working great and have had almost no problems thus far with it


Modified by racinskittle at 6:59 PM 10/22/2003


Modified by racinskittle at 7:12 PM 10/22/2003

 

I had this two. I was running a Super60 trim and found 1st to be decent for launches until 5000rpm when the tires would break loose a bit. Second id loose some traction but get it back, and third id also loose a bit of traction(very agrressive clutch) but the middle to end of third, and 4th and 5th i have less build of power. I found out its because of the limits of the exhaust side on my turbo and the smaller compressor housing. The T3 flows about 31lbs/min of air and has great low end power. The engineer i spoke with suggested a larger exhaust side for slightly slower spool and a much larger intake side for air volume to combat the slow spool. I'm testing a TO4E .60 a/r and .63 trim with stage 3 wheels that he says will pull much better after launch and through all gear very hard. I'm getting head work to raise my rev limit to around 8.5-9k to make use of the turbos power band. This turbo puts out around 50lb/min, almost twice the T3 i ran. THe slower boosting is made up for by total air volume being put out so the lower pressures from slow spool still makelots of power.

 

yeah, you're probably jsut running the turbo out of it's efficiency range. Time to upgrade

 

OHH ok. Thanks for the replies guys.

Most people told me this turbo would be wayy too big for a Dseries so i didn't think it'd run out of power at all. I knew the T25's and 14b's ran out of power, but i never imagined this to. ****. Ill be on turbo #5 before I know it lol

I have a .63 and a .48 housing. I went with the big *** .63 to make sure this wouldn't happen. Guess i've got quite a bit more to learn then. Do you think it'd be more beneficial to put on the .48 then? or should i just leave it like it is.

T3/T4's sounding tempting now..


Modified by racinskittle at 9:22 PM 10/22/2003

 

Hmm .... I was using a turbo off a tbird .48/.60 (was a .63) and it seemed to make less power than my current turbo, probly something to do with efficiency range of the turbo, I am running a .42/.48 t3 on my d16z6 and its works great, I was only running 7psi and still currently am.


Modified by Mr8 at 3:05 PM 10/22/2003

 

no dude i would bet that's not your problem. that t3 has TONS of breath left. You and I both need to get our cars tuned: There is ALOT more top end power to be made with more TIMING! We just can't (safely) figure out how much on the street. Take my word for it, set your timing stock or a degree advanced or so and she'll pull like a mother ******. I think stock timing is almost sorta-safe considering yes its stock timing and your adding boost, but the stock timing was originally factory tuned for 87 octane.... It's fairly safe to figure the 93 octane and the boost cancel each other out (in my mind?) and your good to go.

 

Hmmmmm that makes some sense too. I was beginning to lean toward the tuning issue as well. I think I took too many safety considerations.

93 octane
2 step COLDER plugs
3 degrees retard.
35% pretty much across (and EXTREMELY RICH)

^^^safe enough?

I've only taken it to about 4000-4500 RPM's in 4th because im sittin there doing about 90mph out of third already and im already going WAY too fast as it is on road im on so i pretty much slow down. I think it's time get on the track or some safe spot on the free way and see what happens when i hit full boost in 4th. (still haven't done that yet)

Oh this brings up another thing. When I launch in first running open O2 housing (no downpipe) the car ALWAYS bogs really bad. But after I got the DP installed i can launch 1st great without any bogging.

What's going on there?!


Modified by racinskittle at 10:05 PM 10/22/2003

 

My vote is for tuning.
At -35%, my car was at around 10:1 A/F. It was definatly killing it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rioninja &raquo;</TD></TR><TR><TD CLASS="quote">My vote is for tuning.
At -35%, my car was at around 10:1 A/F. It was definatly killing it.</TD></TR></TABLE>

holy ****. Yeah it's time for me to get a wideband

 

Problem fixed, timing was retarded too far, and my wastegate arm is too long and leaves the wastegate open partially causing a TON of lag in 4tgh.

4th now pulls AMAZING trhough in full boost

Also leaned to -38

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by racinskittle &raquo;</TD></TR><TR><TD CLASS="quote">Most people told me this turbo would be wayy too big for a Dseries so i didn't think it'd run out of power at all. </TD></TR></TABLE>

Lemme guess? The fcktards over at HMT told you that it would be too big? I see it all the time over there.. in ur post over there at HMT about this same thing, the guy tried to tell him the turbo was too big, and thats why it was running outta breath in 4th gear!!!

I had to go on a lil rant over there about it. That site could be a great resource if the morons who dont know what they are talking about stop posting thier misconcived thoughjts as fact

 

You shouldn't be looking at t3/t4's untill you reach at least 300whp on a 60 trim or a super 60.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by WebGeek &raquo;</TD></TR><TR><TD CLASS="quote">

Lemme guess? The fcktards over at HMT told you that it would be too big? I see it all the time over there.. in ur post over there at HMT about this same thing, the guy tried to tell him the turbo was too big, and thats why it was running outta breath in 4th gear!!!

I had to go on a lil rant over there about it. That site could be a great resource if the morons who dont know what they are talking about stop posting thier misconcived thoughjts as fact</TD></TR></TABLE>

It was over here that a couple ppl told me not to. But a TON more people told me to do it from here. They guys on HMT told me to do it THere are plenty of ppl on both sites who have a shitload of experience. In fact many are from both.

 

yes, there are.. but it seems ratio-wise there are more people over there mis-informing people on a daily basis.

 

HA! I missed that post, you're right! Thanks for correcting them, that was some mis information there posted by someone who definately doesn't have any experience.

My bad!