Re: holy shit the sky is falling, Jd wants a K series.
 

There's several V8 swap guys that did what you're saying. Braced the differential and built follower arms coming off the hub that went forward to the frame rails. Pretty much killed wheel hop. They still blew the stock diff though. Or a CV joint. The ford 7.5" diff is cheap and much stronger. Plus parts for it are reasonable. ---- for a mazda 7 is crazy high. For the cost of a torsen swap and new R&P you can buy the 7.5" kit.

Re: holy shit the sky is falling, Jd wants a K series.
 

I think you are ASSuming JD is actually going to BUY these parts for this car. JD is one of the cheapest fucks I know, trust me, he wont have as much in it as he says he will. He's guessing high.

Re: holy shit the sky is falling, Jd wants a K series.
 

id be weary of that statement. Im sure you have done your research, but a friend of mine in Oki tossed a SR20(det) into a miata and the rear end didnt last to long. ill search for the tread, but its a bitch to get onto the forum. I could copy/paste info for you though.

Re: holy shit the sky is falling, Jd wants a K series.
 

Pat, I think you overestimate the intelligence, experience, and knowledge of a handful of random engine swap guys. You'd have to link me to videos of the cars launching, or "hitting it" from a roll, so I can see how the rear end tracks.

I'll have to pay the prices I mentioned for L33, the engines being somewhat new and me not having any domestic or junkyard hookups.

Frank, a friend of yours in Oki also had a ~450-ish Miata, and that's (Zeroyon) is one of the places I found a theory that goes counter to the popular meme that Miata rearends are junk.

Re: holy shit the sky is falling, Jd wants a K series.
 

Not sure what you mean, but yes. Maybe its on another forum but...and the thread title is "diff woes"
http://www.zeroyon.com/forums/index....=9671&hl=miata

motorworx/matt/mjr...whatever he goes by now is quite knowledgeable. at lease he seems to be.

Re: holy shit the sky is falling, Jd wants a K series.
 

you sure it wasn't GEARZ with Stacey David?

Re: holy shit the sky is falling, Jd wants a K series.
 

We had a guy that was working on a high speed camera setup to watch each wheel during a launch. Might have some video next week. We all know it hops. I know it does. I have cut marks in my tires from them jumping forward and rubbing against the fender. Hop puts huge shock loads on the parts and that's usually what breaks ----. We agree. But saying it's good for 500 hp, no. It's sintered steel ---- mikey-mouse mounted in a aluminum case. The way the carrier is mounted is weak. So is the physical differential itself, be it an open or torsen. The difference in design of the mazda 7 vs. the ford 7.5 is way different. Fords is stout. And also has beefier parts made with better materials. There's one guy I know of who put down 575 hp to the wheels with a stock transmission and diff. He killed a transmission every year till he learned how to baby it. He also killed a diff.

I'm around 270whp now and it's sick. :6 Needs a LSD bad though.

Re: holy shit the sky is falling, Jd wants a K series.
 

Maybe, maybe not. We put more power to the ground out of stock Honduh econobox transmissions.

Follow my logical order of what the pop culture "knows" about a D-series gearbox: D-series are weak --> D-series differentials are weak --> D-series differentials are strong, but not all of the diff pins holding the spider gears are correctly hardened, so they fail. Refinements such as D-series gears are stronger than B-series due to how compact the gears themselves are eventually filter in. There are a lot more 350+ whp D-series out there than 200 whp Miata so this logical progression in popular knowledge only took 12-14 years to come about.

:/

I don't want to hear "the diff is weak" or "the rods are weak," I want to sift the wreckage with my own two hands and form an intelligent conclusion. For example, fools hammer rod bearing upper halves into the crank journal with detonation until the bearing welds itself to the crank, the unit locks up, and the rod breaks. Fools say the rods are weak and are listened to "because they've done it." I say the rod is possibly quite strong and the fools need to find another hobby - a perfect example of this is reading Honduh forum posts of a decade ago where "6 psi D-series" and "8 psi B-series" is the most you can safely run on a stock Honda engine - barely at or over 200 whp with the turbos and manifolds used at the time.... now the intelligent consensus is that D-series rods will hold 300+ and B-series 400+.

So, after laying this all on you, Pat... what do you think? Did Honda do it right and no other automaker has a clue, or is the popular consensus largely useless? I love me some Hondas... but there's a lot of excellent ---- out there that doesn't have an H or an A badge on it.

Re: holy shit the sky is falling, Jd wants a K series.
 

Thats almost the exact speech i give to people all the time. As honda people, we really are ahead of the learning curve over alot of the other "groups of car people" out there.

Also a tranny/rear end will hold a v8 with the exact same tq better than a 4cylwith identical tq because because the v8 has smoother force, ie every 90degrees a cylinder fires compared to every 180degrees for a 4 cylinder.

Re: holy shit the sky is falling, Jd wants a K series.
 

im not sure, it could have been. it was over a year ago so i dont remember exactly