Sc14 to buick and e85

TdracerTd · Post by **TdracerTd** » Thu Nov 20, 2014 2:50 pm

Running a 300 x 600 a2a intercooler, on a hot day they slowly creep up to and plateau at around 78 Degrees C. Once you get on it, they quickly drop down to between 45-55 depending on ambient. they are happy to hold there under power.

Post by **Holden202T** » Thu Nov 20, 2014 3:01 pm

E85 will help a lot with that but you wont be able to see the inlet temp drop due to the injector being after the IAT sensor .... but if you are able to go WOT and see nothing over 60 degrees I'd say your laughing if the IAT is still in the stock V6 manifold location!

your seeing much lower IAT's than I see over the 1/4 mile with 20psi boost

but then I am also in the same boat, methanol cools nicely but I can't measure it!

TdracerTd · Post by **TdracerTd** » Sun Nov 23, 2014 9:19 pm

Yeah, it think it's good for a smaller pulley.

TdracerTd · Post by **TdracerTd** » Tue Feb 17, 2015 9:25 am

Had the car out for a run on the weekend, it went except for a small issue with the foam in the fuel cell disintegrating and blocking my fuel filter on my very last run. I have a 72 mm pulley on the SC14 and I'm seeing 170 KPA on the MAP at less than 40% throttle. The car breaks traction easily in fourth gear. Intake temps once you get moving got to around 45C and ambient was around 30C, so I'm pretty happy that the intercooler is working well. Lined up and idling, IAT never went above 70C.

I do have a question though. In my logs, I still see it go into Closed loop idle. All the closed loop stuff is turned off as far as I can see. Is there a tricky setting hiding somewhere that I have missed. Because the car spends a lot of time lined up idling, I would like to be able to control the afr's a little more accurately at idle and not have the computer take over.

Post by **vlad01** » Tue Feb 17, 2015 10:54 am

closed loop idle does not mean AFRs, pretty sure its closed loop spark control to maintain a stable idle?

anyone else correct me if I got that wrong.

Post by **VL400** » Tue Feb 17, 2015 11:48 am

The flag is for closed loop idle speed control, set while controlling the IAC to get RPMs matching (or within the dead band of) the desired idle RPM.

The spark control is called idle spark control, it is used for idle stability and works together with closed loop idle speed control (it can react faster for small RPM variations).

Post by **Holden202T** » Tue Feb 17, 2015 12:19 pm

TdracerTd wrote:Had the car out for a run on the weekend, it went except for a small issue with the foam in the fuel cell disintegrating and blocking my fuel filter on my very last run. I have a 72 mm pulley on the SC14 and I'm seeing 170 KPA on the MAP at less than 40% throttle. The car breaks traction easily in fourth gear. Intake temps once you get moving got to around 45C and ambient was around 30C, so I'm pretty happy that the intercooler is working well. Lined up and idling, IAT never went above 70C.

I do have a question though. In my logs, I still see it go into Closed loop idle. All the closed loop stuff is turned off as far as I can see. Is there a tricky setting hiding somewhere that I have missed. Because the car spends a lot of time lined up idling, I would like to be able to control the afr's a little more accurately at idle and not have the computer take over.

from all reports I've heard of foam in fuel cells they always do that, most people remove it! I've never had it in mine, didn't see a need for a straight line car!

is 170kpa the highest boost you see or does it go higher ?

TdracerTd · Post by **TdracerTd** » Tue Feb 17, 2015 12:56 pm

closed loop idle does not mean AFRs, pretty sure its closed loop spark control to maintain a stable idle?

anyone else correct me if I got that wrong.

The flag is for closed loop idle speed control, set while controlling the IAC to get RPMs matching (or within the dead band of) the desired idle RPM.

The spark control is called idle spark control, it is used for idle stability and works together with closed loop idle speed control (it can react faster for small RPM variations).

Thanks Guys. Mystery solved. I couldn't work it out. Maybe my AFR's are a little iffy at idle due to the filter being blocked and messing with fuel pressure.

from all reports I've heard of foam in fuel cells they always do that, most people remove it! I've never had it in mine, didn't see a need for a straight line car!

is 170kpa the highest boost you see or does it go higher ?

Yep, the foam will be getting removed now. I was told about it, and I thought, she'll be right, anyway, what's the worst that can happen. But I didn't think about where I would be and what I would be doing at the time. Oh well, you live and learn.

It will go higher than 170kpa, but this driver not brave enough to fully open the taps at that track

Going for round two on the dyno this Saturday, so I'll be able to report back on peak boost. Theoretical boost is just under one bar for a 72mm pulley.

Post by **Holden202T** » Tue Feb 17, 2015 4:03 pm

yeah im interested to see the max boost the sc14 makes and how much it drops off at higher revs, interested as I have a mate with one on a v6 in a Gemini

TdracerTd · Post by **TdracerTd** » Tue Feb 17, 2015 8:40 pm

Holden202T wrote:yeah im interested to see the max boost the sc14 makes and how much it drops off at higher revs, interested as I have a mate with one on a v6 in a Gemini

I'll let you know. I'll also post dyno graphs. If you don't hear from me Friday night, then something else has gone wrong.

Sc14 to buick and e85

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