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Author Topic: RX8 with RX7 Race car build  (Read 9733 times)

Offline Grant Monkhouse

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RX8 with RX7 Race car build
« Reply #15 on: December 16, 2012, 08:58:20 PM »
Wow. You need to make me a custom ARB for my rx4 please!
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Offline Martin Price

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RX8 with RX7 Race car build
« Reply #16 on: December 16, 2012, 09:16:23 PM »
I decided to use the RX8 mounts for the 7 engine because they were nice and light. They didnt like being welded much but after I flushed the welds off and gave them some rattle can they looked pretty factory.
I didnt like having to sandwich the exhaust manifold between the mount and the engine but i\'m pretty sure it will be ok.

 

 
 

 

 

 

 
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Offline Martin Price

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RX8 with RX7 Race car build
« Reply #17 on: December 16, 2012, 09:24:24 PM »
Been working on the front ARB today, gonna have two adustable blades on this one mainly because it\'ll be easier for me to make. One will be in-car adustable via a cable. the other will adjust the from under the car.
 
 

 

 

 
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Offline Martin Price

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« Reply #18 on: December 16, 2012, 09:33:00 PM »
Some other random photo\'s

 

 

 

 

 

 

 
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Offline rx7boy

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RX8 with RX7 Race car build
« Reply #19 on: December 17, 2012, 01:17:29 AM »
Quote from: Martin Price;844632
Some other random photo\'s

 

 
If you ever need a kidney then let me know, I want that box !!!!
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Offline re japi

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RX8 with RX7 Race car build
« Reply #20 on: December 17, 2012, 04:37:45 AM »
Wow, looking very nice. :)

Is that diff and cradle from Rx-7 or Rx-8 original?

And i´m a bit curious, how much that Hewland gearbox cost?
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Offline Martin Price

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RX8 with RX7 Race car build
« Reply #21 on: December 17, 2012, 06:37:30 AM »
Quote from: re japi;844644
Wow, looking very nice. :)
 
Is that diff and cradle from Rx-7 or Rx-8 original?
 
And i´m a bit curious, how much that Hewland gearbox cost?

The diff and frame is from the RX8 but I had to secure the diff housing to the frame because I\'m not running the spine that joins the diff house to the gearbox.
Not sure how much the g/box is new because it came with all the bits I got with the cars but I have a feeling they are about 14k.
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Offline shaunwil

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RX8 with RX7 Race car build
« Reply #22 on: December 17, 2012, 02:18:46 PM »
Very Cool Build :D

Shaun
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Offline Grant Monkhouse

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RX8 with RX7 Race car build
« Reply #23 on: December 17, 2012, 02:36:32 PM »
Are you using the standard LIM? I would suggest getting an excessive LIM. Much cleaner looking.
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Offline Martin Price

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« Reply #24 on: December 17, 2012, 10:32:29 PM »
Quote from: Grant Monkhouse;844661
Are you using the standard LIM? I would suggest getting an excessive LIM. Much cleaner looking.

I\'ve just had to do a search to find out what an LIM was, I\'m new to rotarys!
Since taking the picture I\'ve cut the LIM down so it gave enough clearance on the bulkhead, I had thought I might weld some bell mouths on the four inlets and fab a plenum round them that could be fed by a single TB.
I\'ve also been looking at a single Weber IDA inlet which could be modified to work with a single TB, not sure if this setup would be any less work than using the cut down standard LIM.
Like the look of the Excessive LIM, although it looks like its designed to run with the standard top half of the manifold which i dont want to use.
Cheers Martin
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Offline Grant Monkhouse

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RX8 with RX7 Race car build
« Reply #25 on: December 18, 2012, 09:18:48 AM »
Quote from: Martin Price;844702
I\'ve just had to do a search to find out what an LIM was, I\'m new to rotarys!
Since taking the picture I\'ve cut the LIM down so it gave enough clearance on the bulkhead, I had thought I might weld some bell mouths on the four inlets and fab a plenum round them that could be fed by a single TB.
I\'ve also been looking at a single Weber IDA inlet which could be modified to work with a single TB, not sure if this setup would be any less work than using the cut down standard LIM.
Like the look of the Excessive LIM, although it looks like its designed to run with the standard top half of the manifold which i dont want to use.
Cheers Martin


My apologies. LIM is LOwer Intake Manifold
UIM is Upper Intake Manifold

Any reason for you not wanting to use the standard UIM? From what I understand Mazda designed the complete intake system including the standard twin turbos, based on creating more low end torque/power so for peak HP it can be a little restrictive for top end HP. Now obviously your going with a single turbo aren\'t you? Do you know which turbo you are going to use?

Are you doing a custom UIM for fitment issues or??
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Offline colum

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RX8 with RX7 Race car build
« Reply #26 on: December 18, 2012, 10:21:36 AM »
Quote from: Grant Monkhouse;844716
From what I understand Mazda designed the complete intake system including the standard twin turbos, based on creating more low end torque/power so for peak HP
Not technically true, Reg made upwards of 700hp on 50/50 racefuel and v-power with stock inlets and an rw throttle, made great torque too on those inlets

Loving the work and fab that\'s going into this. keep the pictures coming :)
c
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Offline colum

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RX8 with RX7 Race car build
« Reply #27 on: December 18, 2012, 10:26:37 AM »
sorry, just re- read what you wrote Grant and cant edit my post

yeah, stick with stock inlets or re items for a track car to try and get as much torque as possible :)
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Offline Grant Monkhouse

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RX8 with RX7 Race car build
« Reply #28 on: December 18, 2012, 10:58:04 AM »
Quote from: colum;844722
sorry, just re- read what you wrote Grant and cant edit my post

yeah, stick with stock inlets or re items for a track car to try and get as much torque as possible :)


I didn\'t word my reply too good. Stock inlet better torque.

Does reg gain better top end with the Pro Jay LIM an quad TB?
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Offline colum

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« Reply #29 on: December 18, 2012, 01:25:07 PM »
yes, freed up alot of hp but more importantly heat wasnt so much of an issue as it was for some reason
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