+1 any track experience out there with 4.77?

What is the effective redline MPH with the 4.77 in all gears? That would help me determine if it's doable on the track. For example: 1st Gear 3K 10MPH, 8K 35MPH; 2nd Gear 3K 30MPH, 8K 65MPH, and so on... (note: I made these numbers up)

 

I'm referring to the 4.77. I really only do track stuff in my car. I occasionally do AutoX to help with car control. I was talking with Fritz(who has prob. logged more track hours in an FD then almost anyone) at VIR last weekend about gearing and he thinks the 4.77 would be pretty good. He and I aren't the most technical guys in the world though. I'm pretty sure I'm about to order one and give it a try though. I bet some one like Crispy or David G could give us some better insight.

I'd be interested to see this as well. I'm most interested in the top speed with the 4.77.

 

With a 25.5" diameter tire:

9000 rpm
1st - 41 mph
2nd - 71 mph
3rd - 103 mph
4th - 143 mph
5th -199 mph

8000 RPM
1st - 37 mph
2nd - 63 mph
3rd - 92 mph
4th - 127 mph
5th - 177 mph

 

Thanks Dan. Good info. It looks a like ruff with the 8K redline, but then again no worse than my stupid 6spd STI.

<--- Hates rowing the boat during autox.

Oh snap! I need a 25.6" tire and a balanced motor. Then I'm off to the salt flats for 200mph!

 

its something ive been looking at myself , think ill go try the 4.77 as even at 60mph there is 500rpm difference between a 4.1 and a 4.77 so road use will still be ok

Have a look here to see the radios worked out http://www.fatboyraceworks.com/gears...raph&Compare=1

 

Thats a fun little tool. Thanks!

Not sure how many of you are SSM class autox followers, but it's interesting to compare Strelnieks (Transmission 2 - Red) Vs. McKee (Transmission 1 - Green) effective gearing. Someone please correct me if I am wrong to assume they both have factory gear boxes. I am going off of the write ups on 7parts.com.

http://www.fatboyraceworks.com/gears...raph&Compare=1

EDIT ^^^^ There seems to be an error in this link and the tire diameters are equal, when they shouldn't be. Hmmmm. Watch out for this when you are using this program.

 

ya its handy alright , think the 4.77 is a feasible option for me as I dont use the car on motorways here in Ireland and there is not many roads that I could test the top speeds ha

 

Erik is using a Jerico Transmission now.

Dan

 

For Tsukuba Circuit attack, 4.77 final is best.

 

How does your ring and pinion compare to oe Mazda unit?

 

Are these oem parts and are they a direct replacement part to the stock 4.1 in the fd diff ?

 

Please take the pricing inquiries to PMs guys. Inukai, unless you're a paying vendor you can't offer your parts here on the forum. Thanks for your understanding