Aasif

Ok I have the garage, and a shitload oof tools from my grandfather , & I have an 85 Gsl, everythings stock, but the back rotor is blown, I only have 2 days, really 5 hrs to quickly work on the problem, I would like to know what could be the problem, and what i could do to fix it. please thank you.

digitalightkenz

have fun!

Ken

fbatman

hope thats a brake rotor youre talkin about...otherwise dude, wow. what do you mean blown? no compression? seized? does the motor turn by hand?

mazdaverx713b

iTrader: (91)

if the rear rotor is blown the engine needs to be removed, torn down, and inspected before replacing any apex seals or side seals, etc. you need to measure the internals for wear and inspect the housings. if you have two full days and the parts right there for a complete rebuild it can be done in two to three days without lapping the housings(bad idea to not lap unless they're in stellar condition).

Aasif

Well I havent been able to try turning the motor by hand, i am assumming that it is seized, would it be easier to swap in an 12 a that is running? Kinda ironic, I work in a bike shop.
?

vipernicus42

iTrader: (4)

Yeah, if you're sure that the rear rotor is blown, you're in for a project and a half.

Quickest way to get up and running
buy a used, known-running 12a and swap in.
Price: anywhere from $500-1500 depending on availability and condition of used engine
Time Required: 1 day with a friend, if you know what you're doing

Best way to get up and running
Pull your engine, tear it apart, measure all tolerances, replace parts needing replacement (could include anything from simply seals to rotors, housings and e-shaft depending on how the motor blew and how long it ran after), and rebuild the engine

Price: anywhere from $1000 (good rebuild kit only, no replacement parts, no lapping of side housings) to $4000 (ultimate 12a rebuild with ALL the fixings, porting, replacement bits, etc... see my thread in the archive)

Time: If you know what you're ordering, and you have the cash ready, you could have it done in 2 weeks. Again, if you know what you're doing.


So if your crunched for time, go with the first option, if you want more reliability, go for the second option. With the second option you'll *know* the condition of your engine and you can build it to your needs. Porting, and durability upgrades will help you make more power and help your engine last longer. If you plan to boost (turbo or super) at any point in this car's life EVER, you have to go with the second option, suck it up, and spend the extra money to do a quality rebuild.

You could also go for option C & D... the same as the two above, but do a TII swap instead of a replacement 12a. But even then, I'd rebuild whatever TII I'd buy, but you can just buy and drop it in.

Jon

Rotospeed

iTrader: (8)

with the time that you have swap it out with a running 12a. it is not hard realy if you have the tools and maby a freind. i did it by my self and it was about a day and a half

Aasif

Well that makes me think, my cousins friend has an 13 b sittibng around in his garagwe down the block
i'll call him up but before, i want to know how hard is it to swap one in? (its a leftover ffrom his TII from when he did his 20b swap)

Aasif

Forget my last post, what will i need for the swap, a list of tools if somebody has done it before please?

vipernicus42

iTrader: (4)

Okay, if you're going to swap your friend's TII motor into your FB, there is a lot of info around on how to do it, but 2 days is really pushing it. That swap is a little more involved than your average like-for-like 12a swap.

Check the archive and FAQ and try a search. I know there's a ton of TII swap info, there have even been a few threads lately that give you some good info on the easiest/quickest way to do it. There are many ways to go about it, but it seems that a GSL-SE oil pan and the front cover from your 12a are a must, at the very least... and to swap those you'll need gaskets which your local parts store will probably not have in stock.

I'm sorry to say dude that unless you have a known-running 12a you can pick up within the next day, there's *no* way you can deal with this in 2 days.

I'd continue with the idea of the TII swap. Give yourself a reasonable period of time and start doing some research. This isn't going to solve itself overnight.

Jon

Aasif

well i just managed (odly enough) to open up some time @ work, I have about a week to do this, "Swap" so thanks for the help thouugh, I have my teachers 98 corolla an a 00 Rav 4 so i will be kept busy for now