ATTS Drag -12.755@109mph
10-25-2010, 08:30 PM
#1
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ATTS Drag -12.755@109mph
A local club runs an interesting series, in which the final event is a drag.
This year, I improved my times, by switching to a 99 head, and increasing the boost slightly. I still got left in the dust, mainly by the Subaru's and a few fast pony cars, that were running in the 11's.....
Like most Miatas at the drags, I found launching with street tires to be a big challenge. I found that I obtained the best 60', by launching at low rpm's, allowing the rears to hook up, and then hoofing it.
Here's an in car video.
http://www.youtube.com/watch?v=J-wO2YopBW8
Here is the fastest time slip.
My set up is not typical: A Thunderbird SC, Starion IC, GM 2x48TB, MS1, 2xMSD6A ignition, 1.8L etc. in a Mariner blue 1990, all optimized for autocross, on tiny Canadian parking lots.
This year, I improved my times, by switching to a 99 head, and increasing the boost slightly. I still got left in the dust, mainly by the Subaru's and a few fast pony cars, that were running in the 11's.....
Like most Miatas at the drags, I found launching with street tires to be a big challenge. I found that I obtained the best 60', by launching at low rpm's, allowing the rears to hook up, and then hoofing it.
Here's an in car video.
http://www.youtube.com/watch?v=J-wO2YopBW8
Here is the fastest time slip.
My set up is not typical: A Thunderbird SC, Starion IC, GM 2x48TB, MS1, 2xMSD6A ignition, 1.8L etc. in a Mariner blue 1990, all optimized for autocross, on tiny Canadian parking lots.
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10-26-2010, 06:16 AM
#6
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what tires/size you are running
nice runs! around 250whp im guessing?
Pics of your SC setup? I wish I could use first like that. Props on Driver Mod, lol.
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10-27-2010, 02:02 AM
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Ok, here is a rather busy underhood shot.
Starting from the upper left and going CCW.
-red boxes are the MSD6A ignition driving stock 90 coils.
-pressure regulator and valves for wi.
-EV14 750cc injectors
-expansion tank for coolant (rad has been lowered)
-2 stage wi nozzles
-no reroute, I'm using an 02 head gasket
-8rib belt driving sc @ 2:1
-the blower. the throttle body is on the back of the sc. Air is routed thru an air cleaner under the fender at the bumper, up thru a hole in the inner fender to the back of the sc.
I have a 4.10 torsen. 1st gear is nice for pulling up the incline on my driveway, into the garage.
Yes Cayuga, but now they call it "Toronto Motorsport Park"
Currently ~18psi. I recently have been trying to determine why my HP is low for this boost level. (other than the fact that it's an inefficient SC of course) Testing shows my intercooler is too restrictive, so I just put a better flowing one on order. Hopefully, I'll know if this is the answer, before the snow flies.
Starting from the upper left and going CCW.
-red boxes are the MSD6A ignition driving stock 90 coils.
-pressure regulator and valves for wi.
-EV14 750cc injectors
-expansion tank for coolant (rad has been lowered)
-2 stage wi nozzles
-no reroute, I'm using an 02 head gasket
-8rib belt driving sc @ 2:1
-the blower. the throttle body is on the back of the sc. Air is routed thru an air cleaner under the fender at the bumper, up thru a hole in the inner fender to the back of the sc.
What rear end do you have Shifty McShortgear?
Is that at Cayuga?
How much boost?
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11-15-2010, 06:33 AM
#15
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Wowwww really cool idea and setup, get some radials at LEAST lol, I got some 22" slicks on 4x100 13s if you're feeling a trip to the states to borrow them haha
really cool, I like this...
really cool, I like this...
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11-16-2010, 11:10 PM
#16
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Thank you, for the positive comments!
The engine does have forged rods, ceramic coated pistons and a billet oil pump. My winter plans are to replace the intercooler (which is restrictive), fix up the exhaust and possibly do some head work.
I would love to have some drag radials, but since I only run once per year, that is unlikely. How much time do you find they improve your ET by?
Went to the dyno a little over a week ago and ended up with this. I retarded the timing slightly between run 8,9 and 10. Run 11 is with a restrictor in the piping leading to the intake manifold.
Here's the data log of one of the runs.
Megalogviewer pic
If I get my act together, I may be able to replace the intercooler and get another base dyno run, before the snow hits.
The engine does have forged rods, ceramic coated pistons and a billet oil pump. My winter plans are to replace the intercooler (which is restrictive), fix up the exhaust and possibly do some head work.
I would love to have some drag radials, but since I only run once per year, that is unlikely. How much time do you find they improve your ET by?
Went to the dyno a little over a week ago and ended up with this. I retarded the timing slightly between run 8,9 and 10. Run 11 is with a restrictor in the piping leading to the intake manifold.
Here's the data log of one of the runs.
Megalogviewer pic
If I get my act together, I may be able to replace the intercooler and get another base dyno run, before the snow hits.
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