jtothawhat

iTrader: (7)

Judging by his injector size in his signature, I don't think he's on E85. I do see WI, however, how the hell are you not getting detonation?

18psi

iTrader: (76)

I have sigs disabled FTL
That makes it even more insane then: all that boost/timing on pump gas+w/i? You have ***** lol

Faeflora

iTrader: (2)

WI makes that timing graph make sense. I was like holy **** **** at first though.

Brain those pistons are only 9:1. Not super low comp.

Braineack

iTrader: (62)

8.7:1 is super low, 9:1 is low. Got it.

thanks for the clarification.

hustler

iTrader: (6)

My early spark tables are very similar, but I can't find it on the forum and I'm at work so you get no pics. However, I run my spark angle a bit lower today after I started letting the dyno pull-down the motor to get a good, realistic track-like duty cycle going, while using Jeff C's det cans. I wouldn't say I heard detonation, but there is a change in the combustion sound, slightly off-rhythm when doing this procedure. That sound made me yank a couple degrees and the syncopation-rhythm went away.

I recommend you pull 3* or so from 128kpa+ if you ever plan to put the car on the track. That spark table can work on the street, but considering time where I'm running the car from 100-158mph every lap, pulling some spark angle makes sense for reliability. I keep telling myself to install the EGT gauge and get better data, but that requires drilling into the AF manifold and I don't have the heart to do that.

I'll post my spark table later, but this dyno sheet shows the progression to MBT while tuning at low boost for NASATT classing. I added 2* on each pull and you can clearly see that red is the greatest output, green is advanced beyond MBT, and blue is where I started and where I left it. I'm not sure how much extra heat that 3* retard from MBT puts in the exhaust, but I still see <190*f radiator inlet temps.
Ah ****, disregard everything I just posted...maybe I'll leave it for the good of the people.
It's even lower if he's on an early 1.8 bottom end and a 99 head.

Faeflora

iTrader: (2)

No 9:1 is normal comp. 8.7:1 is low comp. This is very important.

18psi

iTrader: (76)

and anything lower is just LO AS A HO ON DA FLO

I'll be doing a piston swap to 5.1:1 soon so I can run >100*

yours goes up to 23* IIRC

hustler

iTrader: (6)

I don't remember, i thought it was a bit higher at low boost. I lowered it after I considered the reality of running 100-150mph 50-times in one day.

wes65

iTrader: (7)

Yeah, that's 93 pump gas with 50/50 meth mix @ 7gph

Indeed it does. Your spark map was the inspiration for mine.

56

95, MSPNP, 1.9L 99 head, 550's, 949 racing twin disc, 6-spd, gt2871, 9:1 Wiseco's, M-Tuned Rods, ARP Head and Main Studs, ACL Bearings, BE OPG'S, ATI Super Damper, HDHTHCDD, DO WI

I would definitely run a more conservative map on the track. I am running a 96 bottom end and 99 head, does that mean my compression is lower than 9:1?

pdexta

iTrader: (17)

Interested in more info on this as well. I'm running a similar setup and had assumed it would maintain the NA compression ratio.

Sokool

iTrader: (1)

You wouldn't happen to know your launch control settings would you? No matter what I do mine tends to want to hesitate to launch rpm and never seems consistent.

wes65

iTrader: (7)

Here's my msq.

TurboTim

iTrader: (9)

56trim 2871...nice. Turbine A/R?

Sokool

iTrader: (1)

Sweet thanks!

hustler

iTrader: (6)

245whp, 11psi, track safe in my opinion:

I had to drop to 9psi and lower spark to hit 210whp for TTB bullshit classing.

wes65

iTrader: (7)

.86 I love this turbo. It is amazing. I replaced my disco potato with this and the difference is immense.
http://www.atpturbo.com/mm5/merchant...egory_Code=GRT

Thats the one i bought.


And for some reason, i cant help myself but to post a picture of this baby. This is my favorite part of the car.



You never answered our question about this statement.

hustler

iTrader: (6)

John and I put a few 99-heads on early 1.8 bottom ends and they never seem to make more power aside form a slight increase in mid-range. I'm not sure if the cams mount higher, altering the cam timing (VW issue) or if the deck is higher but something strange is going on. The next time we have the two lying around maybe he and I can measure.

There's a rumor in town that the 949 clutch overheats on long drives for some reason, can you attest to this? I hope this is the case, it will save me some money.

I guess you also agree that this clutch changes the game and makes you smile every time you drive it? I'm always giddy when I hop in John's car and I'd really like to get one in my car. I have a standard weight clutch assembly right now and I'd really like to downshift faster, especially with the tight ratios; I've been skipping gears on every downshift.

wes65

iTrader: (7)

Well, the farthest I've driven it at once was 4 hours to Nashville. It was the middle of summer and I was having plenty of fun on the interstate. I didn't notice any problems then.

y8s

iTrader: (8)

You don't mean my clutch, which is NOT 949, right?

Gotpsi?

iTrader: (5)

I thought you sold that clutch.