GSlender's Track Beeotch!

sailaholic · Postby **sailaholic** » Fri Jul 25, 2014 2:50 pm

If it helps I run up to 38 degree timing advance

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gslender · Postby **gslender** » Fri Jul 25, 2014 2:53 pm

sailaholic wrote:If it helps I run up to 38 degree timing advance

I guess that depends where in the rpm/load area - but I can't get anywhere beyond 22 deg at 100% load across any RPM band... which seems really wrong!?

G

Magpie · Postby **Magpie** » Fri Jul 25, 2014 2:59 pm

gslender wrote: I'm also using the stock brake booster and so far haven't found any issues with not having enough vacuum

I have collected some data on this and will post on the weekend. This is one of the reasosn why I gave the car a run to see what vacuum the ITB's are making.

For a NA6 with stock master/booster 44 lbs of force on the pedal and no engine vacuum, line pressure should be between 156-171 psi. With 19.7 in of vacuum and the same pedal force, the line pressure should be 754-796.

I can try and find out how much advance is on mine, however I believe that it is close to the limits. Last dyno test it was discussed that if the car was tuned on E85 max timing could be used with no problems.

gslender · Postby **gslender** » Fri Jul 25, 2014 3:15 pm

This be what I'm running with now....

plohl · Postby **plohl** » Fri Jul 25, 2014 4:18 pm

What are you using for knock?

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gslender · Postby **gslender** » Fri Jul 25, 2014 5:24 pm

plohl wrote:What are you using for knock?

My ears... ping ping....<remove 2 deg> ....ping...<remove 2 deg> .... sounds good.

...but will be going to the Dyno and use their Det cans or whatever they use...!?

But so far, really stumped over how I can be so far away from what others achieve with spark advance.

I'm thinking the higher stock compression of 9.5 to 1 will be a factor, but still thought I'd be getting better than that...maybe not!?

G

sailaholic · Postby **sailaholic** » Fri Jul 25, 2014 5:47 pm

Wot at 2000-4000 rpm is 15 degree. 25 at 5500, 30 at 7000. Based on alpha n tuning.

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gslender · Postby **gslender** » Fri Jul 25, 2014 6:10 pm

sailaholic wrote:Wot at 2000-4000 rpm is 15 degree. 25 at 5500, 30 at 7000. Based on alpha n tuning.

Ok, well I'm not far off that then.... so probably ok.... hard to hear ping at 5500+ so I was conservative at that area... need to complete on the Dyno.

G

gslender · Postby **gslender** » Mon Jul 28, 2014 7:31 am

Just learnt the previous owner of the head shaved it fairly aggressively and forgot to mention that it might now running as much as 11:1 compression !!

So that explains it then ..... LOL

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Magpie · Postby **Magpie** » Mon Jul 28, 2014 8:04 am

What fuel are you running, with 11:1 you should be running no less than 98.

plohl · Postby **plohl** » Mon Jul 28, 2014 8:04 am

He often forgets the details haha

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sailaholic · Postby **sailaholic** » Mon Jul 28, 2014 8:41 am

Would also make up for the torque loss from the itbs.

gslender · Postby **gslender** » Mon Jul 28, 2014 8:52 am

sailaholic wrote:Would also make up for the torque loss from the itbs.

Most surprising aspect is even with pretty significant overlap tuned in, she still pulls strong like a bitch from 4k.... Pretty happy!!

G

gslender · Postby **gslender** » Mon Jul 28, 2014 8:53 am

Magpie wrote:What fuel are you running, with 11:1 you should be running no less than 98.

When I can, I'm gonna try E85

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Magpie · Postby **Magpie** » Mon Jul 28, 2014 9:07 am

Just curious on what fuel you are running now whilst tuning.

E85 is a whole other issue. Have you installed the correct valves and fuel system parts for E85? Fuel capacity will become an issue as well, have you thought about where/how you will carry the extra fuel?