SCCA STR 370z Progress Thread.... It can be done!

[Apollo8642]

Okay.... I took a break from work, and threw my car on my scales. No leveling, scales on the ground, cords drapped over the car, complete interior, with spare, almost a full tank of gas, my back pack full of detailing supplies, plus two quarts of oil, and who knows what else (I really need to clean my car out). Here's the raw data I got.


Put up or shut up right. lol

[synolimit]

Originally Posted by Apollo8642

Put up or shut up right. lol

Have to protect my word haha sorry OP. Before I said 3083 pounds with a full tank. Today I was 3060 with 6 points on the gas gauge and winter rear wheels. Now my winters on a bathroom scale say 54 lbs, my summers say 47.5 lbs. So subtract 13 lbs. Also empty my washer fluid bottle and you get another 5 lbs loss. With only 6 points I can roughly guess I'm missing 62.5% fuel or 11.875 gallons or 72.44 lbs.

So my car weighs 3114 lbs with a full tank now. Why the difference? Installed the diff pump (5 lbs), 24 row cooler with oil (5 lbs?) hoses ect, and solid subframe bushings which are heavier. But I know those don't add up to 31 lbs. Turns out this new scale where I live only reads in 20 lbs increments. So I could be 51 lbs off or I could be 11 lbs off. Not enough to cry over though. Point is I wasn't lying and I'm putting up.

Now the scale when i showed up today wasn't zeroed so it was reading -2860 lbs.



But I stepped on the scale and I weigh 160 lbs which you can see it went to -2700 lbs so it still reads accurate!



With the car on it reads 200 lbs so it weighed 3060.



With me on the scale it reads 360 lbs (3060 car, 160 me). Hope that proves my word.

[Apollo8642]

MIKE_STR, looks good. Has there any noticeable difference running that GTM oil pan?
Yea if you move out of STR I can't wait to see what your end up doing next. Good Luck

Originally Posted by synolimit

Have to protect my word haha sorry OP.

Try putting it on a real set of scales, and post pics to protect your word. Those scales can be off a hundred plus or minus or even more some times and who knows when they were last calibrated.

[AK370Z]

Originally Posted by Apollo8642

Mike_STR why do you need to run a full tank of gas? I haven't had any issue with full starvation of any kind, but I race autoX at about 3/8th full tank, and haven't gone below 1/4 tank in a event, where I hear you start having issues, what are your thoughts on that, and plans to install the fix for the issue?

You're playing with fire sir !!! Still no fuel starvation? EVERY single guy I ran into autox events, they all said the same thing,"yeah gotta keep the tank full or else fuel starvation." I haven't hit fuel starvation yet but I ALWAYS run full tank. My longer autox event drive (2 hours from my house), I stop 20 mile before autox venue and fill up.

Actually, I need to keep a track of how many events you do with 3/8th full tank until you hit the fuel starvation. Just for the sake of gather data. What year Z btw? Any video of your Z running at the event?


MIke STR: How do you cope with tire pressure increase? You simple check before event and run all day? I run 37F, 38R and sometimes I find myself running at 45-46 psi hot! Do you go out and check pressure/adjust before each run?

[AK370Z]

Now that's close! lol How you didn't knock that cone over as your hands are still turning, is a mystery! lol

BTW, your video has that black surround can be taken out with 3 second option change. Are you using Window Movie Maker to finalize video?

[MIKE_STR]

Originally Posted by AK370Z

Now that's close! lol How you didn't knock that cone over as your hands are still turning, is a mystery! lol

BTW, your video has that black surround can be taken out with 3 second option change. Are you using Window Movie Maker to finalize video?

LOL! Yes. Windows movie maker... I'm cheap.

[Apollo8642]

Originally Posted by AK370Z

You're playing with fire sir !!! Still no fuel starvation? EVERY single guy I ran into autox events, they all said the same thing,"yeah gotta keep the tank full or else fuel starvation." I haven't hit fuel starvation yet but I ALWAYS run full tank. My longer autox event drive (2 hours from my house), I stop 20 mile before autox venue and fill up.

Actually, I need to keep a track of how many events you do with 3/8th full tank until you hit the fuel starvation. Just for the sake of gather data. What year Z btw? Any video of your Z running at the event?

I have an 2009 Nismo, and you can find all my last year autoX runs at https://www.youtube.com/user/Apollo240sx In the SSCC autoX videos I don't think I ever ran less then a half tank on their track. I figure the sweeper might do the trick, but still have never had a problem there regarding fuel.

Just to be clear my car has been fuel starved on the track, but never auto crossing. For the Oregon SCCA Solo we usually only get five runs, and they are pretty small, usually always sub one minute. As for the national events up at Packwood Wa they are one minute and up. I've never burn threw a huge amount of fuel where I've been worried.

There are now two other 370Z's running in the scca autox group with me, so I'll have to ask them what they are doing.

[MIKE_STR]

Originally Posted by AK370Z

MIke STR: How do you cope with tire pressure increase? You simple check before event and run all day? I run 37F, 38R and sometimes I find myself running at 45-46 psi hot! Do you go out and check pressure/adjust before each run?

Yeah. I have a friend that will check my pressure while I'm in line. Front pressure builds so much faster than back.. but that's where all the weight is.

The car seemed to do the best with 37 front / 35 rear psi.

[AK370Z]

Originally Posted by MIKE_STR

LOL! Yes. Windows movie maker... I'm cheap.

Mike, do this. Takes 3s but it'll remove the ugly black strip around your video. (i'm assuming you're recording wide screen)

Originally Posted by Apollo8642

I have an 2009 Nismo, and you can find all my last year autoX runs at https://www.youtube.com/user/Apollo240sx In the SSCC autoX videos I don't think I ever ran less then a half tank on their track. I figure the sweeper might do the trick, but still have never had a problem there regarding fuel.

Just to be clear my car has been fuel starved on the track, but never auto crossing. For the Oregon SCCA Solo we usually only get five runs, and they are pretty small, usually always sub one minute. As for the national events up at Packwood Wa they are one minute and up. I've never burn threw a huge amount of fuel where I've been worried.

There are now two other 370Z's running in the scca autox group with me, so I'll have to ask them what they are doing.

Interesting man. Maybe you have a special edition Z

Originally Posted by MIKE_STR

Yeah. I have a friend that will check my pressure while I'm in line. Front pressure builds so much faster than back.. but that's where all the weight is.

The car seemed to do the best with 37 front / 35 rear psi.

Thank you. I have a BMWCCA Autox event coming up on 4/27. I'll try it out.

[Apollo8642]

Originally Posted by AK370Z

Interesting man. Maybe you have a special edition Z

Yup, it still gets fuel starvation issues on the track, so it can't be that special, I wish it was though, cause that would be cool.

[synolimit]

Originally Posted by Apollo8642

Try putting it on a real set of scales, and post pics to protect your word. Those scales can be off a hundred plus or minus or even more some times and who knows when they were last calibrated.

Really? What part did you miss about me standing on the scale with and without the car? Both times it was a 160lbs difference which is what I weigh. So you're wrong about it being off.