Gibbon's appropriately priced FD RX7

[ajg193]

Sounds like a 4K with 7/8 race cam in it is your best option. Rebuild kits are like $150

[RUNAMUCK]

/Intech swap it.

//ling

[sheepers]

In my extensive experience with rotaryz (watching junk yard digs and build season get a repu running) it's my considered opinion that your should just send it. 

 

[RXFORD]

https://www.facebook.com/share/1E6pqpxb8x/

 

 

[cletus]

The best fd I ever drove had a LS1 in it...

[RXFORD]

1 hour ago, cletus said:

The best fd I ever drove had a LS1 in it...

You obviously havn't driven the 1kz swapped fd from down south. The raw soot makes greta weep.

[VitesseEFI]

6 hours ago, cletus said:

The best fd I ever drove had a LS1 in it...

Was going to suggest an LS….. 🙂

[VitesseEFI]

7 hours ago, sheepers said:

In my extensive experience with rotaryz (watching junk yard digs and build season get a repu running) it's my considered opinion that your should just send it. 

 

That was some unexpected resurrection there - astonishing. 😳. I couldn’t believe they got it turning, then I couldn’t believe that got it running, then I assumed it would eat itself in minutes (if not seconds), and instead it just healed itself 🤷‍♂️

[GARDRB]

It's only one rotor. Pull the injector and coil plugs off and live the 650cc life

[gibbon]

i can pull the rear cartridge out as well, and tell everyone about my single turbo conversion

[oldrx7]

@dabuzz - some of your knowledge might be handy here.  

 

Have you ever seen the 0 readings on a compression test before?  

[gibbon]

24 minutes ago, oldrx7 said:

@dabuzz - some of your knowledge might be handy here.  

 

Have you ever seen the 0 readings on a compression test before?  

I asked the compression tester manufacturer and he said anything under 10psi will register as zero. I'm telling myself that the fact that one chamber could still make pretty good compression is a sign that the housing is OK

[ajg193]

What drove you to do the compression test? Was it running badly or something?

[gibbon]

22 minutes ago, ajg193 said:

What drove you to do the compression test? Was it running badly or something?

kindof a long and drawn out affair. i parked it in the driveway after a long drive with no apparent problems. then i moved it into the garage. the next time i went to drive it, it wouldn't start. i did some reading and discovered i shouldn't have done the extremely quick drive into the garage, and figured I'd flooded it. so i did the de-flood procedure with ATF in the bores, it fired up but smoked horribly (at the time i put it down to burning off the atf) and had a significant vibration. since then i've fired it up a few times and neither issue has gotten any better

there's a bunch of other stuff muddying the waters too, though, on one of the previous drives the engine started shaking badly at idle, it wasn't smoking though. but after a quick rev up it came right. then there's the jammed open oil metering pump. coupled with my probably overly-rich premix mixtures, has that lead to detonation? or has that lead to gumming the seals? there was oil in the intercooler piping, so that's more oil in the mix, probably from a bung turbo, but I've run it with the intakes off and the smoking didn't get any better

it does start very well, but I suppose it still would, on one good rotor. the engine vibration i figured would be more indicative of a bad seal on one rotor, rather than a bad rotor assembly, and that's why i bought the tester

[ajg193]

If you have oil built up in your exhausts it could take a fairly good run to burn it all out.

I once flooded the pants off of the starlet when I first did the EFI conversion and it was smoking like crazy so I did a compression test and got 0. Engine was actually fine, I probably just tested it wrong

[shrike]

I know that with the rx8 motors the water seals can have issue if they sit for a long time without use, im assuming your not losing coolant or seeing any indication of that? 

[gibbon]

26 minutes ago, shrike said:

I know that with the rx8 motors the water seals can have issue if they sit for a long time without use, im assuming your not losing coolant or seeing any indication of that? 

nah it's definitely blue smoke, not steam. and I had been driving it fairly regularly before it misbehaved

I actually suspect that it's not fucked, I certainly didn't beat on it. I'll have one more go at freeing up the seals but really I'm not afraid to pull it down anyway, if I give it a rebuild now and only expect 50,000km out of it, that's more than I'll ever do

[HighLUX]

It runs but it doesnt quite run, you have accepted the fact a rebuild is on the cards so id be scouring the internet for witches brews for freeing up stuck seals and doing semi scientific tests then if all else fails what would billy hol do

[morkster]

Take it for a good (long?) drive what have you got to lose..

 

Smoke most likely from turbo(s) ay i doubt the oil scrapers are stuck

[gibbon]

22 hours ago, morkster said:

Smoke most likely from turbo(s) ay i doubt the oil scrapers are stuck

I've give it a run without the inlet pipes (which are pretty oily to be fair) and it still smokes just as bad, so that rules out the turbos as the (only) source of the oil

it's still kinda in bits and i wouldn't trust it around the block at the moment but i'll back it out of the garage and conduct a scheduled rev limiter function test in the driveway shortly

edit: didnt feel like starting  got a couple of coughs but that's all. doesn't stink of fuel though which is interesting