Haha, damn.

As said, he got owned. Total ignorance right there.

 

By the way, Mr Engman will be at Sevenstock, so if you're there please seek us out and say hello.

Paul.

 

Hmmm - differential options are nice to have when you are looking to make decent power. I doubt anyone looking to double the stock HP to the wheels (if not more) has a lot of use for first gear. You simply can't floor the car and maintain traction. If you are cutting throttle to get traction, you are wasting the ponies you invested to get. If you can decrease your overall gear ratios and buy more full throttle time at the drag strip, you will improve your quarter mile times. It also raises the top speed of each gear i.e. 5th is good to 159 instead of 147. If you do not have enough hp to use the traction you generate now, then the modest gas savings possibility of a 4.1 or 3.9 rear might be considered marginal. Those people with a first gear smoke show are probably much more interested.

Are these diff's Rx-8 diff's stuffed with different internals?

 

^^ And there, in my humble opinion, is the best justification for this product!

 

Would any type of adapter be provided to ensure both the speedometer and odometer remain accurate?

 

Not in this kit as it's being sold but I can look into what would be involved.

Paul.

 

I believe the speedometer and odometer are based on wheel revolutions, not the drive ratio. I do not believe the sensor is in the diff.

So... what is the availability, and is there an install guide, and is it still similar to the factory in its workings (I think its a quaife no?)

slavearm

 

The speedo readings are not from the diff or the gearbox but based on wheel speed just as you indicated, therefore the readings would be completely unaffected.

We retain the stock LSD mechanisms and change the ring and pinion. We may or may not have one available this week prior to our Sevenstock trip.

Paul.

 

That is interesting to know...

Couple discussions in "The Tech Garage" seems to indicate changing the ratio does affect the reading in the speedo and odometer

https://www.rx8club.com/showthread.p...ht=final+drive
https://www.rx8club.com/series-i-tech-garage-22/diff-ratio-44806/
https://www.rx8club.com/showthread.p...t=speed+sensor

 

I want a 3.9 can you help me??Soon i ll be 450whp+ so i need something good to reduce wheel spin etc...

 

I ll soon have cusco 1.5 type rs lsd if i have a 3.9 final drive will i have a problem with that??I mean will i have a problem cause i won't have a stock lsd???

 

All your PMs have been responded to.

Paul.

 

Very Helpfull.Please answer my last one so we can proceed.

 

With arround 500+ crank hp the 3.9 will be good right?Or too much??And also see your last pm

 

The people who I've provided this for have done it with 3 rotor power. They probably have at least your power and more torque. Again I have responded to the PM.

Paul.

 

I just mean which one will be the best for me the 3.9 or 4.1 with my setup??I just don't want to be "slow" if you know what i mean..But i ll gain a alot from lancing-less spinning etc right??

Please don't forget my total price so we can proceed Paul..Sorry for all the questions but i am very anxious guy and i want only the best parts..I really appreciate all your help

 

That's a judgement call you will have to make. I don't know what your application is exactly; drag race, road race. Serious racers change final drive ratios and other gearing according to the track they are at. Some rebuild their diffs and gearboxes after every race.

I would imagine that in your application the 3.9 will be effective (Better than 4.1?).

Paul.

 

So please make me a price quote for 3.9 shipped and a price quote for a 4.1 shipped..Just the pinion and ring as we said..Ok??And then i ll tell you which one..

I like being fast everytime anytime anywhere..The relationship with my car is very passionaite so i want to move fast!!

The 4.1 is a big difference over the stock one??

 

I'm going to PM you the total cost so we don't have to stay on this thread all day. I remain busy with my phones going nuts together with walk in customers so I'll try my best to be quick.

None of this is a 'Big' difference. They are pieces of the puzzle that add up to one's desired outcome. Together your selection of parts should combine to make just what you want.

Paul.

 

That's what I thought. I could be wrong, but I thought speed and distance are calculated based upon drive shaft revolutions. If I change my final drive by 7%, then the speed and distance will be reduced by the same 7%.

 

Hey can you please send me total shipped price for the 4.1?Only the ring and pinion cause as i said i can't send my lsd...

You also have pm.
Thanks

 

Same as I quoted you on the 3.9. I'll have to lok at my notes. I Believe it was $650 shipped to Greece.

Paul.

 

Yeah something like that..I ll inform you next week so we can proceed..Btw too much money for just ring and pinion...anyhow

 

I wish you lived here so we didn't have to include shipping costs.

Paul.

 

anyone have one installed?