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Rx-7 Rally Car v3.0!

Posted by Gravity Fed 
Gravity Fed
Alex Staidle
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Location: Δx = ħ/2Δp
Join Date: 08/21/2009
Posts: 1,676

Rally Car:
1978 Mazda Rx7



Re: Rx-7 Rally Car v3.0!
December 18, 2014 11:51PM
Quote
Eric Ewert
You sir are very good at building rally cars. How does that toyota axle fit in the rx7 width wise? Also how did it compare in the weight department?

There is no way i would have been able to do this without the help of Al Kun, JVL, and Martin.

this specific toyota axle from the 4runner is the same width as the FC front suspension. Its a ton heavier because its considerably stronger.



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Pete
Pete Remner
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Location: Cleveland, Ohio
Join Date: 01/11/2006
Age: Settling Down
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Re: Rx-7 Rally Car v3.0!
December 19, 2014 12:51PM
Quote
Gravity Fed
Its a ton heavier because its considerably stronger.

That's why my goal is this bad boy: http://www.1speedway.com/Floater_Rear_Ends.htm#msfloat

with an aluminum case. Should still be a crapton stronger than the Mazda bits while still close-ish to the 140lb weight.



Pete Remner
Cleveland, Ohio

1984 RX-7 (rallycross thing)
1978
Silence is golden, but duct tape is silver.
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Eric Ewert
Eric Ewert
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Location: Calgary, Ab
Join Date: 05/13/2013
Age: Party Animal
Posts: 355

Rally Car:
volvo 240


Re: Rx-7 Rally Car v3.0!
December 19, 2014 06:12PM
So one must ask what happened to the IRS rear?
140lb huh I recall the toyota with all mounts on it weighing in at 185. Lots to add but could be worse I suppose.
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Pete
Pete Remner
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Location: Cleveland, Ohio
Join Date: 01/11/2006
Age: Settling Down
Posts: 1,927


Re: Rx-7 Rally Car v3.0!
December 19, 2014 06:38PM
I was wrong, a GSL-SE rearend (big bearing/big axle, 4.5" bolt pattern) weighs 160 with rotors and calipers.



Pete Remner
Cleveland, Ohio

1984 RX-7 (rallycross thing)
1978
Silence is golden, but duct tape is silver.
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Eric Ewert
Eric Ewert
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Location: Calgary, Ab
Join Date: 05/13/2013
Age: Party Animal
Posts: 355

Rally Car:
volvo 240


Re: Rx-7 Rally Car v3.0!
December 19, 2014 06:51PM
the toyota was weighed without brakes for the record. Also not sure how accurate it would be… I weighed it with a bathroom scale.
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heymagic
Banned
Super Moderator
Location: La la land
Join Date: 01/25/2006
Age: Ancient
Posts: 3,740

Rally Car:
Not a Volvo


Re: Rx-7 Rally Car v3.0!
December 19, 2014 07:29PM
Quote
Eric Ewert
the toyota was weighed without brakes for the record. Also not sure how accurate it would be… I weighed it with a bathroom scale.

All bathroom scales seem to read about 20% high or more....smoking smiley
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Eric Ewert
Eric Ewert
Godlike Moderator
Location: Calgary, Ab
Join Date: 05/13/2013
Age: Party Animal
Posts: 355

Rally Car:
volvo 240


Re: Rx-7 Rally Car v3.0!
December 19, 2014 10:13PM
ummm... yes of course, I heard that from a reputable source as well... it must be true...drinking smiley
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Eric Ewert
Eric Ewert
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Location: Calgary, Ab
Join Date: 05/13/2013
Age: Party Animal
Posts: 355

Rally Car:
volvo 240


Re: Rx-7 Rally Car v3.0!
December 27, 2014 03:09AM
Hey Alex what are you doing for caliper mounts on the toyota axle? I've got a few ideas based on what the off road guys do with 4 runners (bolt on bracket) but figured I would ask what you got on the table.
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Gravity Fed
Alex Staidle
Senior Moderator
Location: Δx = ħ/2Δp
Join Date: 08/21/2009
Posts: 1,676

Rally Car:
1978 Mazda Rx7



Re: Rx-7 Rally Car v3.0!
December 27, 2014 11:33AM
A bolt on bracket drinking smiley



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First Rally: 2010 First RallyX: 2004 (a bunch)
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zack13277
Zack Rondeau
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Location: Plymouth, WI
Join Date: 03/16/2015
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Rally Car:
83 Mazda RX7


Re: Rx-7 Rally Car v3.0!
May 05, 2015 08:23PM
Hey Alex, I talked with John V today, about my 1g RX7 build. I'm putting in a Toyota rear end with 4 link and panhard bar, John's coilovers and I was going to make the rear towers taller for the rear coilovers. I was wondering how high you made your towers.

Thanks



-Zack
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Gravity Fed
Alex Staidle
Senior Moderator
Location: Δx = ħ/2Δp
Join Date: 08/21/2009
Posts: 1,676

Rally Car:
1978 Mazda Rx7



Re: Rx-7 Rally Car v3.0!
May 10, 2015 05:42PM
basically as high as i could go. the tops (above which the eyelet sits) are about level with the 1/4 window bottom



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First Rally: 2010 First RallyX: 2004 (a bunch)
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Cars Built (1.5), Engines Blown (2) Cages Built (0) # of rotations (3.5)
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zack13277
Zack Rondeau
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Location: Plymouth, WI
Join Date: 03/16/2015
Age: Party Animal
Posts: 84

Rally Car:
83 Mazda RX7


Re: Rx-7 Rally Car v3.0!
May 10, 2015 06:30PM
Ok, thanks. Also did you put a 2nd gen steering column or subframe in? It looks like the column might be like 2 inches short.



-Zack
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Gravity Fed
Alex Staidle
Senior Moderator
Location: Δx = ħ/2Δp
Join Date: 08/21/2009
Posts: 1,676

Rally Car:
1978 Mazda Rx7



Re: Rx-7 Rally Car v3.0!
May 19, 2015 11:52AM
yea i used the entire FC front drop out and the column. Now, the FC column does come up short. If the junkyard Gods smile upon you however, a power steering FB column is longer and will work quite well.

Until i find another one, im staying with the FC column and just dealing with whatever.



Respecognize!
Http://www.facebook.com/2WDriveRally
First Rally: 2010 First RallyX: 2004 (a bunch)
Driver (0), Co-Driver (5)
Organizer (3), Volunteer (3)
Cars Built (1.5), Engines Blown (2) Cages Built (0) # of rotations (3.5)
Last Updated, Oct 30, 2013
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aj_johnson
A.J. Johnson
Elite Moderator
Location: Pendleton OR
Join Date: 01/07/2011
Age: Settling Down
Posts: 1,349

Rally Car:
88 Audi 80


Re: Rx-7 Rally Car v3.0!
May 19, 2015 10:43PM
Is it running yet?
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Gravity Fed
Alex Staidle
Senior Moderator
Location: Δx = ħ/2Δp
Join Date: 08/21/2009
Posts: 1,676

Rally Car:
1978 Mazda Rx7



Re: Rx-7 Rally Car v3.0!
May 20, 2015 09:01PM
Ha!



Respecognize!
Http://www.facebook.com/2WDriveRally
First Rally: 2010 First RallyX: 2004 (a bunch)
Driver (0), Co-Driver (5)
Organizer (3), Volunteer (3)
Cars Built (1.5), Engines Blown (2) Cages Built (0) # of rotations (3.5)
Last Updated, Oct 30, 2013
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