It Blowed Up Real Good! (Now With Pictures!)...AGAIN...and again!
Joined: Dec 1999
Posts: 7,855
Likes: 517
From: Behind a workbench, repairing FC Electronics.
I had a brain fart. 
What I meant to say was to have a TII driveshaft made. I could use a stock shaft, but they have weak and non-replaceable u-joints. The local driveline shop can make me a brand new TII sized shaft that has massive u-joints (they come from some kind of huge Dodge truck) that are easily replaceable. So that's the direction I will go. My TII trans to NA diff shaft (with big u-joints) will be up for sale at some point ($200 is the price).
What I meant to say was to have a TII driveshaft made. I could use a stock shaft, but they have weak and non-replaceable u-joints. The local driveline shop can make me a brand new TII sized shaft that has massive u-joints (they come from some kind of huge Dodge truck) that are easily replaceable. So that's the direction I will go. My TII trans to NA diff shaft (with big u-joints) will be up for sale at some point ($200 is the price).Limited funds and fabrication resources means I like to use an off the shelf part if I can... Once I get some space for metalworking that'll change.
I usually like an off the shelf part unless there's a good reason to fabricate.
Ability to replace universal joints sounds like a good reason.
If you read, you'll note that he blew the N/A trans and put in a Turbo2 unit.
Thread Starter
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
Personally I'd love to be able to make driveshafts and axle shafts myself, but I lack the necessary balancing equipment. However the local driveline shop is friendly and inexpensive, and do good work. I can have them make up almost anything as long as I am clear about the spline patterns, flanges and length.
I had a brain fart. What I meant to say was to have a TII driveshaft made. I could use a stock shaft, but they have weak and non-replaceable u-joints. The local driveline shop can make me a brand new TII sized shaft that has massive u-joints (they come from some kind of huge Dodge truck) that are easily replaceable.
What I meant to say was to have a TII driveshaft made. I could use a stock shaft, but they have weak and non-replaceable u-joints. The local driveline shop can make me a brand new TII sized shaft that has massive u-joints (they come from some kind of huge Dodge truck) that are easily replaceable.We had a lot of trouble with locally built driveshafts (well not me personally but Damian). In that most driveline places dont have the ability to balance a shaft at the speeds racecars see. Thus he was getting high speed vibrations (80-120+ mph). Now we buy them from the driveshaft shop. As they have the equipment to do the high speed balancing most places don't. I think that all the mazdatrix driveshafts are built by those guys (but dont quote me).
Joined: Mar 2001
Posts: 31,837
Likes: 3,234
From: https://www2.mazda.com/en/100th/
The words you are looking for are "DANA" and "SPICER". And yeah, they are so much better than the stock joints....not even close.
We had a lot of trouble with locally built driveshafts (well not me personally but Damian). In that most driveline places dont have the ability to balance a shaft at the speeds racecars see. Thus he was getting high speed vibrations (80-120+ mph). Now we buy them from the driveshaft shop. As they have the equipment to do the high speed balancing most places don't. I think that all the mazdatrix driveshafts are built by those guys (but dont quote me).
We had a lot of trouble with locally built driveshafts (well not me personally but Damian). In that most driveline places dont have the ability to balance a shaft at the speeds racecars see. Thus he was getting high speed vibrations (80-120+ mph). Now we buy them from the driveshaft shop. As they have the equipment to do the high speed balancing most places don't. I think that all the mazdatrix driveshafts are built by those guys (but dont quote me).
with an overdrive in the trans the driveshaft rpm can be over 10,000...
Thread Starter
Joined: Feb 2001
Posts: 29,798
Likes: 128
From: London, Ontario, Canada
The local driveline shop services most of the race teams in the area, so they don't have any issues. I've had shafts made by them since 1999 and have never had a balance issue.
They LOVE our RX-7s. Everytime they hear the "brap brap brap" all work stops and they are in the parking lot.
They LOVE our RX-7s. Everytime they hear the "brap brap brap" all work stops and they are in the parking lot.
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