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Side projects:
- rebuild rotary engine for rx8.

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Side projects:
- scrap rotary engine for rx8.
- LS swap rx8.

I fixed that for you.

Cool, good work Alex.

I agree with Lucian though!

Electric!

Nice looking piece, but the material choice is probably overkill for the application. Big advantage of Chromoly is strength to weight ratio, but I don't think a gram or two in this piece is going to make a difference. 4140 is a lot more common, I asssume cheaper, and would probably be a good choice of material for this piece.

It is forged 4340 chromoly tool steel that is machined from an ingot by a 5-Axis CNC Mill, then oil-grooved, shot-peened, heat-treated and carbonized. Rockwell hardness is around 60-62. That results in an approximate tensile strength around 115,000-120,000psi. It is essentially classified as a hardened tool steel part.

It is by far the strongest cross-shaft on the market for these vehicle applications and provides owners with complete streetability on high-horsepower AWD applications. Instead of machining down the stock cross-shaft to accept 4 spider gears, this part started from scratch with better material, a beefier structure, surface hardening, and oil passage grooves on its posts to provide proper oiling to the spider gears to prevent surface galling.

The Beyond Redline Performance cross-shaft has been proven to hold over 1000HP and 950TQ at the crank on my race car for the last 5 years without signs of galling or damage. It has been proven on the race track, the street, and the dyno to survive the harshest conditions without failure.

turbo FTW

You must have a whole lot of money burning a whole in your pocket if you want to take one of the most fuel inefficient vehicles around and make it even more inefficient in a place that has super expensive, crappy gas.

I don't know the reasoning for the choice of material, it's Beyond Redline Performance who actually makes it and to Tim Zimmer's knowledge, none have ever broken or galled up.

Now would making it out of 4140 significantly change the price? I'm assuming like most parts, a good part of the price is the overhead and r&d cost attached to the part, not the material itself.

You read my mind. Oil and gas like a 2 stroke, and you'll be pulling it out and rebuilding it every 30k miles lol

49k stock longblock.

You must have a whole lot of money burning a whole in your pocket if you want to take one of the most fuel inefficient vehicles around and make it even more inefficient in a place that has super expensive, crappy gas.

But hey, should be fun! Revving a car engine out to 10k on the regular is always enjoyable. The extra torque from a turbo will be wonderful.

Electric!

I was just responding to your comment that Chromoly must be priced like gold. I am sure there is a ton of R&D and considerable machining involved, and the piece would not be cheap regardless, but I think chromoly is most commonly used in tube form, like for chassis or roll cages. If I were making these today, I would probably try 4140 and possibly nitride the surface after machining. Are the oil passages circular grooves or a spiral groove?

i believe 4140 is considered chromoly?

Not that much far off from 4B11T

Come again?

Didn't you blew your 4B11T with cobb tune at 49k ?

I believe it was closer to 225K(give or take). I suspect an engine failure could occur on Cobb tune with no respect to its Km's, 50kms to 500000kms wouldn't matter much from what I've heard.
*disclaimer I have zero personal experience with the Cobb tuner*

That being said I also have no experience with rotary engines or how reliable/well they hold up to higher than factory HP.

LA smog must be getting to you man I blew the original engine with over 230k (close, Charles). The donor that took it's place in the engine bay, has 49k. The original engine even with the high mileage ran extremely well and healthy up to that second. Personally, I am extremely excited to take that cobb AP off and kick it off the nearest cliff once the car is running. I should have removed it as soon as I got the car.

When you realize you've taken on too much at once and haven't even began the engine swap yet.

2 things you are lacking in that pic....

Beer bottles...

And plastic containers... Yogurt ones work really well for organizing bolts.

Alex, this just came up on my recommendations, should help!
https://www.youtube.com/watch?v=lnoF80ezReo

Ready to drop in the L19's

Very nice! Torquing to 90 lbs?

[quote=Alex Akachinskiy
Very nice! Torquing to 90 lbs?

Side note: Finished my Kiggly pickup mod