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Johnny Boost's FC Build

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Old Sep 9, 2010 | 01:01 AM
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CO Johnny Boost's FC Build

Well now that I'm really building this car and parts are coming together I figured i'd post up pictures and start documenting the build.

Originally I had planned on building one of my 1st gens. I was going to swap the subframe with an FC subframe and run FC suspension. So I started off with HKS Hiper Max Coilovers then found a FC in town that didn't have an engine but had a subframe and rack and pinion that I wanted.

The FC was an 87 GTu Hardtop... I know that that doesn't seem right but the car has the fixed caliper, five lug wheels and the aero by the rear wheels (which is up for sale). Anyways, I bought the car from a kid for $200. The kid who owned it before me didn't know jack... or so I've gathered.he pulled the engine and rather than disconnecting the wire harness he cut it.

Also some of the interior pieces that he was taking out rather than unbolting them and popping clips he just tore them off. So I don't think he had the knowledge to swap the hubs and suspension into it.

While the car sat on the street in front of his house it got ran into by a backhoe messing up the hood and driver side fender.
Attached Thumbnails Johnny Boost's FC Build-img_3749.jpg   Johnny Boost's FC Build-img_4187.jpg   Johnny Boost's FC Build-img_4185.jpg   Johnny Boost's FC Build-img_4695.jpg   Johnny Boost's FC Build-img_4218.jpg  

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Old Sep 9, 2010 | 01:09 AM
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So I bought the car and decided that rather than building up the 83 FB that needed a lot of work, I'd just go with the FC which had more options and better performance.

So i loaded the car on to my trailer and took it over to my families shop at our ranch.

There I've been working on gutting the engine bay.

I decided that because of the cut harness and that many 2nd gens have electrical issues I decided to remove the stock harness through out the car and rewire the things I needed and wanted.
Attached Thumbnails Johnny Boost's FC Build-img_4189.jpg   Johnny Boost's FC Build-img_4209.jpg   Johnny Boost's FC Build-img_4210.jpg   Johnny Boost's FC Build-img_4213.jpg   Johnny Boost's FC Build-img_4216.jpg  

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Old Sep 9, 2010 | 01:16 AM
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My grandfather used to breed and raise quarter horses on our ranch before he passed away. Some of his horses were champion race horses. So I figured that now that we no longer raise the horses I'll introduce a new type of horsepower to our ranch.

My goal for this car is to make over 500 horsepower and beat the fastest rotary powered RX7 in Colorado down the quarter mile. However I'm primarily building this car to be able to drift. So much focus will go into the suspension and brakes along with much work to the turbo engine.

This car WILL be a beast.
Attached Thumbnails Johnny Boost's FC Build-img_4183.jpg   Johnny Boost's FC Build-img_4181.jpg   Johnny Boost's FC Build-img_4182.jpg   Johnny Boost's FC Build-img_4215.jpg  
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Old Sep 9, 2010 | 01:19 AM
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you do have thousands of dollars for such a lofty goal right?
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Old Sep 9, 2010 | 03:44 AM
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Do you have specs of spring ? Spring rate and dimension of spring.. thanks..


Good luck on your goal..!
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Old Sep 9, 2010 | 06:28 PM
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So I began working on the car. I knew I want to make big boost which in turn means big power. So I'll be rebuilding the engine no matter how good it seems. But we'll cross that bridge when we get there. But I was able to acquire some turbochargers and have been toying with some different set ups. I picked up two TD04/T3 (or so I believe...) and a Garrett GT4082 that has never been used from some friends of mine. Whether I keep them or not is still up in the air. One of the smaller turbos will need a rebuild for sure.

I've been working on getting the entire car gutted and stripped. Still have to pull the dash and continue removing the wiring harness inside the passenger compartment.
Attached Thumbnails Johnny Boost's FC Build-img_4359.jpg   Johnny Boost's FC Build-img_4361.jpg   Johnny Boost's FC Build-img_4220.jpg   Johnny Boost's FC Build-img_4221.jpg  
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Old Sep 9, 2010 | 06:38 PM
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Originally Posted by arghx
you do have thousands of dollars for such a lofty goal right?
I'm a baller.

Originally Posted by Gaber
Do you have specs of spring ? Spring rate and dimension of spring.. thanks..


Good luck on your goal..!
Sorry no I don't.. well not 100% but I believe they are 6k Front & 5k Rear but I could be wrong. And thanks for the well wishes!
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Old Sep 9, 2010 | 06:42 PM
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I was going to post the picture in an a attachment but it kept failing. Here's the GT4082 Turbo.

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Old Sep 9, 2010 | 06:49 PM
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I also picked up a BN Sport Style Body Kit but decided Not to go with that so I sold it and put the money towards buying my engine.

Also picked up a Steel Turbo 2 hood from a friend but decided I want a more sleepy look so I decided not to use it (for now it's up for sale.)

Also it's interesting watching the spare parts begin to amass!

(once again the picture of the hood failed to attach...)
Attached Thumbnails Johnny Boost's FC Build-img_4689.jpg   Johnny Boost's FC Build-img_4691.jpg   Johnny Boost's FC Build-img_4693.jpg   Johnny Boost's FC Build-img_4694.jpg  
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Old Sep 9, 2010 | 07:00 PM
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I picked up some Fiberglass wide Fenders to replace the Fender that was missing... I like these because they keep true to the original body lines while standing out and being wider.



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Old Sep 9, 2010 | 07:01 PM
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Engine Bay Wire Harness.

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Old Sep 9, 2010 | 07:25 PM
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Lookin' good buddy! I'd love to give a hand sometime if you need it! (: Good luck!
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Old Sep 9, 2010 | 09:06 PM
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lol i like the signiture, beat mike b... Post some pics of the HKS coilovers when installed
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Old Sep 9, 2010 | 09:42 PM
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Originally Posted by Johnny Boost
My goal for this car is to make over 500 horsepower and beat the fastest rotary powered RX7 in Colorado down the quarter mile.

Well I hope you take the first step in the right direction and shoot for at least 600WHP and drop an FD or RE motor in that thing.
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Old Sep 10, 2010 | 11:12 AM
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Originally Posted by Laurel
Lookin' good buddy! I'd love to give a hand sometime if you need it! (: Good luck!
I'll give ya a hollar when I go to do suspension work on it or wire up everything.
We need to go get dinner sometime soon. Hit me up!

Originally Posted by reaper60606@aol.com
lol i like the signiture, beat mike b... Post some pics of the HKS coilovers when installed
I'm waiting to finish painting it before I install those gens. If you know CJ (USSCJ on here) they used to be the ones off his old gray FC. How fast did Mike B run the 1/4 mile?

Originally Posted by BurntOrangeT2
Well I hope you take the first step in the right direction and shoot for at least 600WHP and drop an FD or RE motor in that thing.
600+ would be great and if I could get my hands on either engine for a decent price I'm all over it!
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Old Sep 10, 2010 | 04:13 PM
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Painted/dyed my single floor mat and my arm rests. I think they turned out great and so I'll do the same to the dash when I get it out.






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Old Sep 10, 2010 | 04:38 PM
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Good luck with build, I hope everything goes smoothly.

Whats the A/R ratio on the turbo? I know it says on it but it is just a little to small to read.
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Old Sep 11, 2010 | 12:16 PM
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Originally Posted by Johnny Boost
I'll give ya a hollar when I go to do suspension work on it or wire up everything.
We need to go get dinner sometime soon. Hit me up!
Sounds good! I'm pretty much open whenever, with the exception of Monday nights! (:
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Old Sep 11, 2010 | 12:49 PM
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A/R on the turbo seems to be a 0.5. A 4082 won't be enough for 500 RWHP unless you are in the 20+ PSI range. 4088R will do that power in the 16/18 PSI range which is far more reliable.
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Old Sep 11, 2010 | 01:11 PM
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Good luck with your goal!
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Old Sep 11, 2010 | 02:00 PM
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Originally Posted by Aaron Cake
A/R on the turbo seems to be a 0.5. A 4082 won't be enough for 500 RWHP unless you are in the 20+ PSI range. 4088R will do that power in the 16/18 PSI range which is far more reliable.
Wow that is small isn't it? I'm a noob with stuff like this so i'm trying to learn. From what I have read in Corky Bells Maximum Boost book it should give great response but not much hp.
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Old Sep 11, 2010 | 02:07 PM
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keep up the good work johnny, cant wait to see the fc running around town
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Old Sep 11, 2010 | 04:55 PM
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A/R is a 0.58 It's decidedly not a small turbo. It makes the two TD04/T3 turbos looks tiny and my buddies 16G from an evo is even smaller yet. So the question is not will it produce enough boost but rather will it spool enough. Heck it's a turbo that diesel guys buy to upgrade their turbo diesels.

I'm off to go camping.
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Old Sep 12, 2010 | 10:26 PM
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if I can find a 20Bfor cheap i would.
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Old Sep 13, 2010 | 10:09 AM
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Originally Posted by Johnny Boost
A/R is a 0.58 It's decidedly not a small turbo. It makes the two TD04/T3 turbos looks tiny and my buddies 16G from an evo is even smaller yet. So the question is not will it produce enough boost but rather will it spool enough. Heck it's a turbo that diesel guys buy to upgrade their turbo diesels.
I'm off to go camping.
Actually, yeah, 0.58 is pretty small for a turbo in that class on a rotary. As an example, the compressor housing of my GT4088R is 0.72. Puts down just over 400HP at 13 PSI, and about 500HP at 16 PSI. You can't compare piston engine turbo sizing on 4 cylinder cars to sizing on a rotary.

What's interesting is that the turbo has an internal wastegate, which tells me that it is a T3 turbine housing. What is the AR of the turbine side? But without even knowing that, I can tell you that the turbine side is way too small for that compressor on a rotary.

Oh, and a 4082 is much like a GT35R, so expect power similar to what you would see on the 35R.

You wanna make 500HP? Then you want a 4088R with a 1.06 turbine housing. Maybe .96 if you just have a street port.
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