Rescuing The Cheapest FC3S RX7 Turbo II From Its Grave | Part 5

[@brucetorres7952]

First

[@AWD_T]

Bouncy suspension + low exhaust + reversing out of driveway = disaster.

[@cheoman81]

That was an air bleed on the upper radiator inlet.

[@Went__Awol]

"Was"😂😂😂

[@SupraWes]

Yeah , it probably just needed an o-ring, lol

[@rollinout2012]

Way to go Dave! Love seeing older cars brought back to life. Keep up the great work!

[@jimbobvic]

wow those shocks are stuffed

[@andrewhillman9632]

Great to see the progress. Step by step.

[@brianskotch2922]

WATCH OUT FOR FUEL CUT! Stock fc ecu cuts fuel to rear rotor when higher than stock boost is detected.(anything over 7/8 psi) And because you’re running an open downpipe it will definitely boost more than that. Get a fuel cut defender or aftermarket ecu.

[@karoliskazlauskas1213]

Waste gates exist ok

[@brianskotch2922]

Broken Piston yeah because stock iwg size on a fc hotside is totally big enough to not boost creep right?

[@karoliskazlauskas1213]

@@brianskotch2922 this thing probably doesn't have a boost controller (at least I don't think so) so it has a spring inside the wastegate that opens up once enough pressure is built up releasing excess exhaust pressure

[@teamideall]

@@karoliskazlauskas1213 fc wastegate's are notorious for not being able to hold the boost creep........ he should port the stock wastegate and add an fcd at the very least

[@metalinvalidmatt]

@@karoliskazlauskas1213 totally get what you're saying but if you've worked on a stock turbo on these things, he's running right at potential issues here.. as the stock wastegate on a S4 turbo is a single 16mm hole. might be able to fit your pinky down there? for what it's worth, it basically doesn't exist once you've got a decent exhaust/intake on there. beyond that, I've heard reports that new, completely stock S4 still had boost creep issues in very cold ambient temperatures, hence mazda put the fuel cut thing in there to kinda(?) protect it.

[@amiga5008]

I hope you get a proper exhaust,you are going to mess up the turbo by using that pipe thing

[@7sins979]

glad to see the progress, if you did not get the rear brake issue resolved already it is probably some garbage stuck in the bleeder screw, you can take it out and use a pick to open it back up the put it in and bleed the caliper.

[@Junkyard_Dave]

First thing I did was pull it and it was clear

[@klfer]

You might break the turbo with that exhaust hitting the ground.

[@nate8867]

KLFER how does that work? Just bending the pipe can warp the turbo?

[@trevorg2349]

@@nate8867 I'd be nervous backing over something that would catch the exhaust... a raised section of pavement or speed bump etc.

[@klfer]

@@nate8867 It can crack the exhaust housing on the turbo.

[@samsplinter68]

KLFER I don’t think he’s going to keep it like that

[@ewannutley5396]

Good putting in work man

[@Qgal5kap123]

I want an FC too! But in Norway, I guess most of them have become iron oxide by now...

[@murderouskitten2577]

Same problem in Latvia , especially coz there is so much salt on roads at winter: (

[@YeahAkka]

At least Mazda send them to your country, Mazda didn’t export these fcs to my country lol

[@megahornet]

@@YeahAkka Feel you brother, where I live no RX cars after the RX-3 were sold and even the ones here are stupid rare.

[@sixpencerbx]

the only fcs you see are the convertibles

[@Qgal5kap123]

@@sixpencerbx - and we don't want them, do we :-P

[@Thatguyisnice-yf5nx]

The front engine cover was changed mid year by Mazda. If you order a front seal kit for an 87 it may possibly be the wrong kit. I had a 7 just like yours and it had a pinched seal in the front cover even though the new kit was just installed. It caused low oil pressure readings. I doubt that is your problem though. Love to see this FC being restored.

[@802Garage]

0:42 OMG those front shocks are so toasted. Makes sense considering how long it sat of course. Dangerous with that extra low downpipe though! Did you consider replacing the O2 sensor with a 3 wire? Would still function normally, just heat up much faster and hopefully improve idle and cruising etc. For the gauge cluster, I have often found it's a bent, weak, or damaged pins in the connector. Easiest thing to check. Hopefully that cluster is easy to get out. I know you probably know a lot of this, but whatever we all know I like to comment. Woulda been brave to go to the drags! Hopefully soon. Good work Dave.

[@Junkyard_Dave]

Need @bcracingna to hook it up

[@802Garage]

Agreed. Time to go make some noise on Instagram. ;)

[@bigphat200]

Been there done that . i had a 1979 Fiat x19 with no brakes. But at 2000 lbs. Downshifting got u pretty close to stop. That lasts 20 miles per hr you had enough brakes to stop.

[@TheGaldiatus]

Solder near the exhaust will melt and come loose, also the "downpipe" hitting the ground might break your turbo or manifold, please do not ruin this car and make ir proper.

[@NotSoCrazyNinja]

It's risky, but, ground contact might also just wear the exhaust down until it no longer drags. Personally, I wouldn't do it. I'd rather exit through the hood.

[@legros731]

Its not solder its weld and it will not melt lol

[@Optimoosepryme]

Simon Legros I think he is referring to the o2 sensor

[@arrotary]

Nice house! I love the garage and drive way setup.

[@jp_parrish]

Looking forward to seeing you swing this classic 👍

[@creepinwhileyousleepin]

I cant wait for this thing to get buttoned up and painted. I think that screw you epoxied was a air bleed valve for the radiator, no biggie. Since it was the early days of ECU's in these, things can be really finicky. Also I might have a pair of S5 tail lights in storage if your interested.

[@Junkyard_Dave]

How much for the tails?

[@creepinwhileyousleepin]

Junkyard Dave Maybe just shipping plus 40, the back left has a chip in it so they aren’t perfect.

[@alleybuilds5370]

Dave and more wiring! Some how it always happens to you. But I’m very happy to see where this project is going!

[@Junkyard_Dave]

Always something lol

[@MrBEAN584]

little trees?!?!?!?! WONDERBAUM!!! 😆

[@ryanhappygilmore2426]

cant wait for next video. Needs a full exhaust and gauges to work.

[@henrikandersson1661]

Pls get a proper exhaust, sounds terrible 🙉 really nice project 👍👍👍👍

[@haroldwhite7464]

Is the hole you plugged for a coolant sensor. Maybe that explains why you don’t have a temperature reading

[@matthewdevine113]

Yeah that’s also what I thought

[@plav032]

no its not. The coolant temp sender is on the drivers side rear iron of the engine. He put JB over an air bleed which was just a bad o ring or a leaky plug.

[@haroldwhite7464]

Patrick Lavoie ohhh that makes sense

[@cjhawk67]

It's a bleed valve your supposed to unscrew it to get air bubbles out of the cooling system as its the highest point in the system

[@normanguzman417]

That is the air bleed for the cooling system highest point. Since the part is plastic it should have a replaceable o ring on the cap. The cap uses a large Phillip screw driver to loose it up.

[@brianrobinson9979]

Always bleed the brakes starting furthest from the brake fluid reservoir and work forward

[@cdoublejj]

actually plastic bonder like you used, REACTS and BONDS to plastic old school regular jb weld does NOT bond to plastic, i just kinda sticks on there.

[@shaneblacklord3313]

Fix the exhaust. Get a new oil pressure sensor, great video, love the car. Do a restoration, make a series of videos. Good work Dave.

[@franque3911]

great job bro

[@digigamer7]

This problems on the fc seem pretty common and its making me want to buy an fc.

[@normanguzman417]

The RPMs staying up could be the dashpot located by the throttle body. It is there to prevent the throttle body closing abruptly. It has a adjustment similar to a throttle cable. Some RX-7 owners eliminate that and by doing so the exhaust some times randomly will will pop small split second flame when you go off throttle. The best thing to do is adjusting it to see if it will solve the problem of the RPM going down so slow. If you want to eliminate the dashpot it is best to wait for idle problem problem to be solve first.

[@xtonsoffunx]

Best way I've ever used to find vacuum leaks is spray brake cleaner on the hoses while its running n listen for a change in idle

[@x8stone8x]

Just replace all the hoses with the upper intake off and delete emissions that's what I did takes little time.

[@appleguy6708]

Duuuuude that shit looks fun as heck lol

[@ismaelkhatouti7723]

u should do a collab with Stauffer Garage for cleaning the car from the inside. would be a amazing video

[@84gssteve]

Don't forget too, the open exhaust will pick you up almost 5 psi and 50HP on a TII!....but you will hit boost cut almost immediately, so a boost cut controller will be needed to electronically cap the MAP sensor's output below cut levels. This has the undesirable effect however of making the AFM the computer's only source of airflow measurement, and once you exceed the flap door's ability to open further, fueling will no longer increase. Increasing pump pressure and swapping in bigger secondarys, or go old-school with an AIC or F-con to bump the fuel.....yea, pretty archaic stuff, but so is the OBD0 Jetronic EFI on those old RX's!

[@Cruzomeda]

Let's get that gauge repair video in the hopper. Keep at it bro!

[@marshall9066]

I could be wrong, or not remembering correctly, but I remember my Turbo II tach and speedometer stopped working due to a reverse switch or relay or maybe sensor, I don’t remember exactly. If your reverse lights aren’t working, that could be it. It’s located on the transmission and Rotary Performance bypassed it somehow, as I didn’t have the time or money to have it replaced (it’s hard to get to), but I did have my instruments working. The only downfall was I had no reverse lights, which I didn’t care about.

[@plav032]

That exhaust is going to cause boost creep. Considering your stock ECU will cut fuel, its a very risky mod to save a few bucks on. Also you JB welded an air bleed plug, which you could have fixed with a 2 dollar plug with an o ring.

[@Junkyard_Dave]

I tried to get the plug out it was broken off it doesn't hurt anything not hard to burp the system

[@plav032]

@@Junkyard_Dave easy outs my man!

[@akktiveautosports]

Big progress, small video, nice work Dave.

[@noocann]

Horn problem 90% most likely it's the "CPU" - cold solder joint problems. Long black box in driver's side kickpanel - redo solder joints that hold the plug socket in the center of the box. Do your turn signals / hazards work? This CPU also has circuits for those things.

[@gaijins30]

OMG. He basically lives on the side of a drag strip! @12.15

[@juanjosehernandezmorales321]

Very nice i hope you can make work the cluster i follow you fron Mexico

[@johnvyskoc4417]

Nothing like the sound of a rotary, miss my fc

[@JohanGavieres]

Love the FC. Can’t wait for part 6. Thank you for great content 🤙🏼

[@nitrous07me]

That exhaust scrapes, it’s hanging too low

[@brooklynpantojasreddevilsm7999]

Rotary 4 Life great job bro she sounds good a little bit rough but truly awesome

[@simond7582]

That exhaust :-(

[@prk5339]

Check that you have oil pressure with a mechanical gauge.

[@normbarr2894]

Will it ever idel right??? It is way to high

[@CorollaMAD97]

Loving it dave looking forward to the next video

[@jerrywooton5025]

did you try pulli g vacuum and pushing the brake pedal also I was under the assumption you are supposed to bleed the caliper furthest from the reservoir first or does it not matter im just curious that thing sounds so sick great job breathing new life back in that old girl dave also do those wires hanging out of the bottom of the dash when you were talking about fixing the gauges have any thing to do with it they looked like they were ripped off a motherboard from the video it looked like there was pieces of it on the end of the wires

[@Junkyard_Dave]

The wires go to a dash speaker, and on non abs cars the master is devided front and rear so it makes no difference

[@andrewsmith-zi7db]

Hi Dave we’re is the hellcat build need some updates please really like your videos really interesting to watch wayting for the hellcat videos please some updates please

[@Junkyard_Dave]

Its coming

[@ncron1109]

Put the spare charger motor in the fc!!!

[@jimbobvic]

spray the engine with starting fluid while running should find your leak quick

[@andrewbeal2717]

Keep up the good work dave what's going on with the hellcat ?? from the UK.

[@Junkyard_Dave]

Its coming

[@NotSoCrazyNinja]

That front suspension though..

[@beasteast23]

These videos just make me want a fc

[@adamhinchliff9281]

Great little series, pure and raw

[@Born_Stellar]

I used some injector cleaner on my n/a FC and now it dies while idling, I think the mixture is running super rich. (i'm gettin pops from the exhaust) I'm going to flow the injectors but thats my only guess. maf was fine and clean previous to using the injector cleaner. Good luck with the rest of your fixes!

[@alextran9650]

is that a midnight purple supra in the back?

[@Junkyard_Dave]

Supra where

[@masterv2118]

exhaust .... fix it... come on Dave you're better than that...

[@Junkyard_Dave]

Test exhaust lol

[@allianceofvengeance]

Thumbs up for the little trees!!

[@msnapp169]

Just saw a piece off of it lol

[@terryhsiao1745]

Isn't catless illegal

[@Junkyard_Dave]

Only in comi states

[@backburner2128]

We got the grandma view! Put us on a phone book next time...

[@Junkyard_Dave]

Just on the dash lol

[@murderouskitten2577]

one thing i noticed apart from the car - you do have beautifull open sky around your place :)

[@zmarko]

Front Range Colorado. Beautiful area. I used to live in Denver, I miss it.

[@scarface-39]

zmarko You probably wouldn’t miss it now! With all the dopers around!!

[@7sins979]

@@zmarko yea denver looks like shit now his area is still nice though.

[@joetrippi1603]

Looking forward to you going back to widebody challenger. Unfortunate your having issues with getting the parts replaced.

[@jacobwebb8818]

You should really disconnect the negative terminal when spraying brake cleaner near sensors unless you like wiring lol

[@dokidoki1021]

Dave's secret fetish is wiring

[@Junkyard_Dave]

What's it going to do the wiring is chemical resistant

[@ktga67ish]

The Rad on my 87 leaked in the same spot. If you want to check for vacuum leaks with smoke (it’s legit) check out BREW2L’s video on his Mr Fusion build, or hit me up and I’ll send you mine.

[@hardknox1917]

I say just send it lol

[@troyfankell6581]

I have nearly the exact same FC... I would replace every vacuum line with silicone hoses. I use the VR1 in mine as well Get rid of that dump pipe and get a proper exhaust. I like my Trust exhaust or find someone selling a Racing Beat. I saw one on Denver Craigslist a while ago. The dash components were notorious for for cold solder joints. Part of the reason the light switch would burn the runs internally.

[@frdradio]

You could've just welded that last pipe on the other end. That would have solved the height issue

[@STREETCARCULTURE]

Old clunky coming back to life! How are your oil control seals?

[@scottiefc]

Get the koyo hh66042 i think thats the part number but its a direct replacement. Even has the same air bleeder screw that you plugged up but it wont leak w it being aluminum.

[@84gssteve]

The oil pressure and temp sensors are down by the oil filter pedestal on the rear iron. With the key on, try touching each of the wires to ground and you should see the gauge cycle. if it does, then get new sending units. You can see both of them at 9:00. Since the oil gauge works, Id suspect the cluster is good and power is flowing. The hanging idle is pretty common when you start removing things when running the stock ECU. Its best to pull and plug everything, including the non-vacuum dashpot, then do your best to set the idle speed with the idle and bypass screws. Either that, or leave it all intact and keep everything working as stock(which can be even harder!)

[@akuma-tactics1]

What happened to the 3000gt TT ?

[@rickfoster6479]

My gauge did the same thing in my 87 t2 hooked up a true oil feed gauge oil psi is fine they are notorious for going bad. Check behind throttle body for vacuum leaks there are a few ports on back side hard to see. Also throttle body could be leaking through linkage. I use cigar method to check for leaks on mine.

[@dubbleA100]

Hey Dave you should look into getting new secondary coil packs, those might be causing the issue of getting no tach signal. Im up in Westminster, CO and I have a few sets if you want to test them... Also the speedo is a mechanical line that feeds into the trans, its possible that the conector in the cluster is disconected? thats how mine was.

[@azizizul720]

Which part of theharness can I find O2 sensor wire? Because I have similar case with my O2 sensor got chewed up and and unfortunately lost those wires.

[@ATLRIOT]

Oh yea the exhaust bolts will come right off. My turbo exhaust mainfold bolts need to be tightened after every race.

[@65msp]

What’s up with the Dodge projects?

[@Junkyard_Dave]

It's coming

[@datto240z]

love this build!

[@glennplumbe7815]

You don't have a Capillary gauge to connect to see your oil pressure ??

[@Junkyard_Dave]

Nope

[@glennplumbe7815]

@@Junkyard_Dave Lol (Nope) didn't you work at a wreckers there would be heaps there yeah !!! Oh yeah your wiper motor is unplugged.

[@teamideall]

please port the wastegate and add a fuel cut defender before you fuel-cut the rear rotor and blow this up. the stock wastegate can not handle extra boost created by opening the exhaust like that.

[@terryhsiao1745]

Updated yes !!

[@clickslidebang1871]

Thinking of making a channel on re awakening of my rx7 that ran when parked.drive it for 2 years and sat since ....this def motivates me

[@airsami28]

I bet the neighbors thought you were firing up a weed eater to do your grass then they came outside realising your up to your normal shinanogans

[@terry1427]

nice! keep up the nice work... love seeing this becoming a proper fc

[@jicez6649]

Great video! Gotta say I get more excited about fc and fd content than I do r8.

[@Junkyard_Dave]

I feel like people are tired of super car this and that

[@Kidkato]

Not an Rx7 owner but judging by the location of that hole it looks like a bleeder hole.

[@mdelgado8386]

Hell Yeah

[@clickslidebang1871]

Should i premix my 88 fc s3 after 5 years of hibernation

[@JT-un7dc]

Use epoxy designed to bond plastic. J B weld will not bond correctly.

[@davidconley3610]

Dave is the hellcat build history?

[@Sepulvedas787]

Great video brother, the feeling of restoring a car is priceless!!!

[@jamiemosteller1679]

Miss the hell cat any update?

[@Junkyard_Dave]

Its coming

[@ericl3936]

I like the FC videos.... Are you going to delete the popup lights?

[@emery908]

We should go swimming sometime

[@Junkyard_Dave]

Cool

[@theodorsot3051]

What happened to the challenger

[@Junkyard_Dave]

Its coming

[@bumpstart]

its a breather to burp the radiator

[@Junkyard_Dave]

Well it was leaking coolant so the system is probably good