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-   -   Dilemma: Will turbo make 1st gear useless for autocross? (https://www.miataturbo.net/race-prep-75/dilemma-will-turbo-make-1st-gear-useless-autocross-83621/)

dasting 03-25-2015 02:07 PM


Originally Posted by M.Adamovits (Post 1218459)
Fun fact: Shifter karts used to dominate many autox circuits, until most sanctioning bodies added rules like "vehicle must have suspension" and other to rule out shifters without saying no shifters.

They still do. They have their own class in SCCA, they're fun to watch, especially when they finally go beyond their ability to catch a slide at 60 mph, which is quite easy.

But seriously, OP's course blows. I'd rather spend my money on a single speed kart, and, you know, just go kart racing. W2W karts that only go 45mph would be way more fun than autoxing that, assuming a club exists to run with.

Chiburbian 03-25-2015 02:26 PM

^^ Agreed. Either run what you have to learn how to drive YOUR car better, upgrade your car to make YOU happy on the roads YOU drive everyday and learn to drive that, or spend your money on a kart and learn the principals of driving fast with the best platform for that specific venue.

I drive with Windy City Miata Club in the suburbs of Chicago and we have a parking lot that we autocross on that is notoriously technical but I spend most of my event in 2nd, sometimes third gear.

M.Adamovits 03-25-2015 02:33 PM


Originally Posted by dasting (Post 1218461)
They still do. They have their own class in SCCA, they're fun to watch, especially when they finally go beyond their ability to catch a slide at 60 mph, which is quite easy.

But seriously, OP's course blows. I'd rather spend my money on a single speed kart, and, you know, just go kart racing. W2W karts that only go 45mph would be way more fun than autoxing that, assuming a club exists to run with.



Did not know. That's even better.

bbundy 03-25-2015 05:16 PM


Originally Posted by dasting (Post 1218456)
If this is the only course you have I would stop modding your miata and just buy a damn kart.

Yea 1st gear autocross is not so much fun. Steering inputs on a course that requires you to go that slow just get ridiculous and harsh and the wonderful feeling of controlling and dancing with vehicle dynamics and tire slip angles just goes out the window.

acedeuce802 03-25-2015 05:25 PM

MS3 + Boost by Gear + 4 psi wastegate spring

Schuyler 03-25-2015 05:27 PM


Originally Posted by Hinano (Post 1218064)
t25 spools from around 3k no?

I have >0psi before 2000rpm, 7psi by 3100rpm.

turbofan 03-25-2015 06:05 PM

You will not have a difficult time spooling your turbo in 2nd on that course unless you're driving like your sister's friend's dead grandmother.

Full_Tilt_Boogie 03-25-2015 07:02 PM

1 Attachment(s)

Originally Posted by M.Adamovits (Post 1218459)
Fun fact: Shifter karts used to dominate many autox circuits, until most sanctioning bodies added rules like "vehicle must have suspension" and other to rule out shifters without saying no shifters.

Does this count as suspension?

https://www.miataturbo.net/attachmen...ine=1427324553

90civichhb 03-25-2015 07:09 PM

That has to be a drag car.

18psi 03-25-2015 07:11 PM

Whatever it is, I'm fascinated with it.
Love looking at crazy suspension setups.

Looks like it allows for about a quarter inch of travel though? tops

M.Adamovits 03-25-2015 07:25 PM

I'd say, but I'm no official.

And as others said, it looks like a drag car..

Hinano 03-26-2015 12:41 AM


Originally Posted by Schuyler (Post 1218569)
I have >0psi before 2000rpm, 7psi by 3100rpm.

What happens between 2-3?

aidandj 03-26-2015 01:15 AM

I think maybe boost builds...?

turbofan 03-26-2015 01:22 AM

1 Attachment(s)

Originally Posted by Hinano (Post 1218658)
What happens between 2-3?

It'd probably look a little something like the red line, blue line, or yellow line. Not sure which.

https://www.miataturbo.net/attachmen...ine=1427347325

aidandj 03-26-2015 01:23 AM

Yellow line looks like mine.

Please tell me you just drew that.

turbofan 03-26-2015 01:27 AM

Here's the thing.

I've seen people who have considerably less resources successfully turbo their car.

I've seen people more clueless than you who successfully turbo their car (read: dropped they car off someplace with a blank check).

But from where you are right now, your combination of cluelessness and lack of resources does not look promising.

You really shouldn't be touching this thing right now. You need to do a lot more reading and learning first.

Then again, you'll likely only destroy this car about as much as I destroyed my Saab Turbo and Merkur (read: both ended up parted out by the next owner).

turbofan 03-26-2015 01:29 AM


Originally Posted by aidandj (Post 1218663)
Yellow line looks like mine.

Please tell me you just drew that.

I use my Galaxy Note tablet for very important diagrams like the one shown above.

aidandj 03-26-2015 01:37 AM

Nice, I hoped it was an mt.net original.

Schuyler 03-26-2015 01:51 AM

1 Attachment(s)
Attachment 233455

Side note, I need to get this 7psi IWG sorted out.

Braineack 03-26-2015 09:18 AM

how about just build a car and not worry about the autox track.


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