I traded my '85 12A with low miles for a "NEW 12A with 4 Bridge ports,It had new RB Carbon seals,Lapped Housings&Supposibly everything was new&Done by a Experienced mechanic".The guy I got the motor from said the motor was "Too MUCH For the Street" & wanted my Motor to cruise his car so We swapped motors&When I tried to start the Bridge ported motor it Wouldnt start for nothing,It would start if I poured oil down the carb"ATF didnt work too well,But oil did the trick?"
When I finally got it to run It would Idle at 2500 to 3000 anything lower it would die.So I drive it a Few Blocks & the Motor dies & The rear tires LOCKED UP a little so I pull over & the motor wont turn over either way,I tried to break it free but it spins very little with a breaker bar & then locks up,The rear rotor is stuck,I need help with this I feel like the motor is JUNK

 

wow, that sucks.

 

Bad clutch?

 

I don't even know what to say...

You've got this guys address right? Maybe you should pay him a visit

I know I would.

 

Sounds like they fudged up the bridge. You have a side seal stuck in the port.

Yep, it's junk. Sorry.

 

Will it turn either way in neutral and some spray lube in there?

Pull the header off and shine a light in there look for any metal shavings or scoring. Stick your finger in the exhaust port and feel around for scratching, scoring, and broken pieces parts. Pull the leading plugs and look in there too.

Pull the intake manifold off and look at those ports, push on the side, apex and corner seals if they can turn by the ports.

Please don't ask how I know about looking for rotary damage!

 

It has a New clutch RB street strip,It feels like the rear rotor is hitting something,It took me 3 days to get the car running As it is in a 1980 Toyota corolla,Today was my 1st time driving it &I was not even going fast,Not even High RPMs& it just Shut off(it sounded like It lost all compression),I will definately have some words with the guy,I think he had to know the motor was not built right ,It only started with oil in carb,& didnt feel strong?

 

I put some Mystery oil down intake & in plug holes the motor turns but it is VERY HARD & then it Wont MOVE Either way. I took off Dizzy & looked in motor the Chain in there is Very LOOSE(If that Helps?)There was also a lot of White Sludge inside there,I put a magnet in there & got Shavings all over it

 

OUCH!!!

The quarterback is TOAST!

Definately have words with him and bring up words like 'misrepresentation' and 'did not inform buyer of broken parts', 'traded parts under goodwill gentleman's agreement that they are fully functioning', and 'police' if needed.

 

Yeah, I would incourage you to go "talk" to this builder. How can one build a engine with lapping and other goodies and not know how to build a bridgeport?

I built my own and ported on my own, its not that hard, its either a major dumbass who built it with porting on the wrong places or the engine ingested something and broke a carbon seal already. I don't know though.

 

That motor was built by a unexperienced FOOL,I also think that the motor still has the stock steel seals,I wont know till I take out the motor & Open it up,Im scared to see what I find in there I definately know that the rear rotor is stuck&The rear housings are CRAP,i will find out soon

 

You probably spun a bearing. Perhaps it overheated? Tear it down and see if the guy was lying to you.

 

I think its time to that , and proceed to bust out the and finally comeing to the decision of

 

I would be kicking ALOT of ***!

Dont take it apart! take it out, take it back to the guy, and land that ****** on his fore head!!!!



That sucks *** dude!


If it has a real bridge, and stock seals... it was fucked before it was put together,


I got bridge ported housings and plates forsale if ya need them.............



Thanks, Laterz, Andrew

 

I took apart the motor& All was New & lapped also there were Brand new Carbon seals,All the Housings were Bridged.The Damage was The Rear Rotor was stuck on the eccentric shaft, 1 broken carbon seal,3 broken corner seals& rear plate of motor was Damaged.
The guy I got it from Gave me a 12A motor complete& Took me to Talk to the engine Builder(Who I happened to know since I was a Kid)So Im getting all done for Practicaly nothing.

 

Wow, some times it pays to keep a cool head, this worked out really well. Know you know what is truely in the motor and you know who built it. All for the cost of a stock 12a.

Vic

 

i bought my car and had to tear the engine down. it looked like a nut had fallen in the rear housing by going threw the intake and chewed ita ll the peices. al the seals were gone, the rotor had major dmg to along where the apex seals went and one big groove in it. the housing had a lot of bad dents in it and there was a side seal stick in the exhaust port. so thats how it can happen. but i bought it like that so o well