What did you do today to your 3/S?

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Originally Posted by Forest Gump

I bet a lot of stories start this way...

So I was raising the boost.. on my hallman and before I was only running 18 psi. Well the instructions say to try .5 to 1 turn at a time and well, "ain't nobody got time for dat", right? So, I went 3 turns thinking that would get me to about 21.

I was giving a co-working a ride this morning and hammered it in 1st and it shot up and hit the rev limiting so hard I must've fouled a plug. It ran rough for about a minute and smoothed out.

So, at lunch I thought I better go do a 2nd gear pull to be sure the motor isn't hurt. It takes off absolutely like a bat out of hell and pulls clean. I did another run and tried to watch the boost gauge and it went up to 25 PSI and settled around 24 or so.

I checked the logs and afr's are great with no knock. I was going to go a little slower up to this much boost, but I guess I'm already there.

I hit 193 peak load on my 427AWHP virtual dyno and today hit 259 and this is only in 2nd. This turbos spool so fast it doesn't seem to make a difference, so it is great to get the tune close just using 2nd.

A rolling start in 2nd feels like a huge launch used to.

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Lol. I remember doing that with my Hallman. I was at around 20-21 psi and decided I was going to turn it up some more so I cranked it a few times. Well, I must have loaded it up pretty good in 2nd or 3rd because I peaked 31.6 psi. Haha. It scared me because I wasn't expecting it but more so because I thought for sure that much power on my stock motor would have busted a 2nd gen piston ring land. Everything was good though and I turned it down to 26-27 psi right away. I never really went past 30 since then but going from 20 to 30 psi is a huge leap in power. It's really fun when you get to turn it up.

Fired her up. Downpipe still off and o2 disconnected, but she's alive :)

All kinds of headache with downpipe and rear precat delete fitment issues... But that's ok, cuz I haz boost
https://www.facebook.com/photo.php?v=256750621130566

https://www.facebook.com/photo.php?v=256751617797133


Think this makes me #25 or so on the 6g74 tt swap :p

Are you having clearence issues with the rear portion of the front subframe and your downpipe. thats where i had issues. I want to make a precat delete pipe that comes down further and turns to the back of the car and connects to the downpipe via vband.... maybe make the front portion of the downpipe and the rest of it all 1 piece.

Quote:

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Originally Posted by Forest Gump

I bet a lot of stories start this way...

So I was raising the boost.. on my hallman and before I was only running 18 psi. Well the instructions say to try .5 to 1 turn at a time and well, "ain't nobody got time for dat", right? So, I went 3 turns thinking that would get me to about 21.

I was giving a co-working a ride this morning and hammered it in 1st and it shot up and hit the rev limiting so hard I must've fouled a plug. It ran rough for about a minute and smoothed out.

So, at lunch I thought I better go do a 2nd gear pull to be sure the motor isn't hurt. It takes off absolutely like a bat out of hell and pulls clean. I did another run and tried to watch the boost gauge and it went up to 25 PSI and settled around 24 or so.

I checked the logs and afr's are great with no knock. I was going to go a little slower up to this much boost, but I guess I'm already there.

I hit 193 peak load on my 427AWHP virtual dyno and today hit 259 and this is only in 2nd. This turbos spool so fast it doesn't seem to make a difference, so it is great to get the tune close just using 2nd.

A rolling start in 2nd feels like a huge launch used to.

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Sounds a lot like the way I ended up tuning. I was thinking small increments, but ended up jumping from 12psi to 16psi with no problems. Went up small from there.

Sounds like our load numbers would match up, the most I've hit is ~235 on a cold morning, usually 210-220 and it's a huge difference in how it feels.

How is 3rd gear? I've noticed the higher the gear, the more prone to knocking it is (then again, you'll probably never have knock on e85).

Quote:

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Originally Posted by TwIzTeD_3kGt

Sounds a lot like the way I ended up tuning. I was thinking small increments, but ended up jumping from 12psi to 16psi with no problems. Went up small from there.

Sounds like our load numbers would match up, the most I've hit is ~235 on a cold morning, usually 210-220 and it's a huge difference in how it feels.

How is 3rd gear? I've noticed the higher the gear, the more prone to knocking it is (then again, you'll probably never have knock on e85).

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Until today I had never seen any knock, but I do get 1-2 counts here and there now, nothing I'm too concerned about. Biggest problem today is I had to dial back the boost or I had spark blowout. I'm really not sure what to do with the ignition system at this point, but I guess I'll gap down to .020, but that shouldn't be necessary. I wonder if my HKS DLI is dead.

Ignore the boost plot. The curve may be correct, but it is somewhat low, in the neighborhood of 3-4-5 PSI in places. The scaling is wrong. I took a video earlier I'm going to try to see what the boost really is:

http://www.chrisbehnken.com/Images/p...0wNZW_Ke3p.jpg

Pretty close to where I need to be. If I can get the ignition to deal with 3-4 more psi I should be okay.

oh and for those wondering about the consistency of the virtual dyno software:

http://www.chrisbehnken.com/Images/p...0vlmf_DEP7.jpg

After the 480 run I turned the boost controller up .25 turns (different stretches of road).

Finally got the front turbo removed and drivers side half shaft off. Reassembly tomorrow.

Old 9b has Zero shaft play, in any direction. I'm replacing it as I suspect it is the cause of burning oil. I hope I'm right.

Quote:

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Originally Posted by Forest Gump

oh and for those wondering about the consistency of the virtual dyno software:

http://www.chrisbehnken.com/Images/p...0vlmf_DEP7.jpg

After the 480 run I turned the boost controller up .25 turns (different stretches of road).

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You should make a thread like mine "tuning on dr750s". Would make for good info for everyone! Interested in looking at your timing map too.

Moved it for the 1st time in a month. Don't want to go far with no exhaust, lol.
Just needed it out of driveway so I could cleanup my mess.
New clutch feels nice. No more chatter.
I also apparently did a much better job at bleeding the clutch this time. Nice and tight :)

Finally got around to replacing my clutch line with a replacement from Ninja Performance. Glad to be back in my VR4 instead of my 87 F250 (60 mph top speed) I've been driving the last two weeks.