cdrad51

Engine was torn down again due to excessive oil smoking, housings lapped, oil control rings replaced, oil pump replaced, eshaft replaced. Porting expanded slightly.





Double pulley added. Changing from yohoo belt to double belts




Old oil control rings believed to be responsible for internal oil leaking

mazdaverx713b

iTrader: (91)

that is a nice looking engine!!! i hope you have the problem sorted out and that the control rings were the problem. usually thats what would cause excessive smoking and internal leaks looks really great though!!!!!!!!!!!

cdrad51

Thanks man. Engine is being dropped in tomorrow. Crossing fingers that the problem is solved for good.

cdrad51

Well, it's alive! engine fired up with ease, and after warming up, no more smoke! Now I just have to solve a little idle issue, probably a vacuum leak. Break in begins!

Elysian

doesn't the yoohoo belt give you more contact on the water pump's pulley than a double pulley? its not the alternator i'm worried about slipping lol

Pele

iTrader: (28)

Yeah. It also has the potential to trash bearings, as you can't adjust the belt tension.

Double alt and drop the clutch fan in favor af an electric. You should be fine.

Hades12

Looks good. Why did you have to replace the E-Shaft.

cdrad51

Replacing the e-shaft was the builder's decision. He'd do that if it wasn't within specs.

Found the idle problem, with RX7carl's help. The rear bowl float and needle was sticking, flooding the engine with gas when it wasn't supposed to. And it looked a lot like a vacuum leak. But it wasn't.

diabolical1

iTrader: (3)

looking good!

you have any pics of the ports before assembly?

cdrad51

Not very good closeups, but here you go:

diabolical1

iTrader: (3)

love the intakes! on the exhausts ... is that a round port? i'm used to the "D" ports. what's the logic there? eju-ma-kate me?

Dan_s_young

iTrader: (1)

pretty cool, I love the way rotarys look when they are painted like that. I put a new used engine in my car a couple weeks ago, I just wish I had the time to tear it appart and paint it to make it look awesome like that. Hopefully all your smoking problems will be fixed. One thing you gotta love about these cars is how easily it is to take the motor out/drop it in without all the emissions and stock crap that they come equipped with.

cdrad51

Yeah, actually the intake ports were extended a little bit more after that pic...

The exhaust ports are D shapped, maybe in the pics is not too clear.

cdrad51

diabolical1

iTrader: (3)

maybe it's the alcohol, but this was amusing ...

don't worry, i know what you mean though.

Dan_s_young

iTrader: (1)

haha I can see how it can throw you off, I just don't really know what to call it, its NEW to me But its a Used engine that has been rebuilt 30-40, 000 km's ago.

diabolical1

iTrader: (3)

could it possibly be the port size? just in case you start to drive yourself crazy if you don't find a vacuum leak.

that's good stuff, man. i like. i just wish i could finally finish mine.

cdrad51

No. As I said earlier, it turned out to be a stuck float needle causing the rear bowl to overflow. Engine now idles purrrfectly

diabolical1

iTrader: (3)

oops! totally missed that.

jays83gsl

Now let's see if you don't blow it before next week

cdrad51

this one will last at least 3 weeks

jays83gsl

No way. 2 max. But I'm being awful generous considering who I'm talking about

cdrad51

Sorry to dissapoint you. Still going strong.

-xlr8planet-

iTrader: (3)

I cant really tell from the pics, but can you describe the condition of the housings?

Was the chrome ok on them? is dirt what I see in the pics?

jays83gsl

He probably spilled some soda on them while he was working on them