Engine Rebuilding - Ring Set Advice

[Pierre_b 3]

Hello,

 

I am rebuilding my 1600 105hp XU5J. I am looking for some advice !!

 

To describe my project :

 

- It's my first engine. No experience ;-)

 

- This engine had a spun bearing at 100 000km (the number two from the flywheel of course). I have changed the crank for a used one, and kept the rod. My engine machinist had check them and said they are ok, but he didn't check the squareness. I have check crank to rod clearance with plastigage, it's ok : 0,05/0,06 mm for every rod. I have heard every where that a rod with a spun bearing is dead, but why if every check is ok? (quite scared about this)

 

- The liner/piston are kept, because the engine was working fine, no smoke, no noise, no oil consumption.

 

- The cylinder head came from a XU5JA (bigger valves, and cam), I want to cut the seat with a 3 angles but I don't know a good machinist for that in my area (France, Paris), so I have to find the size of the 45° part by myself, my machinist will follow what I say (too bad I don't live in England)

 

And now the questions :

 

I don't know what ring set to buy. My machinist told me that for used liners (with a glaze breaking to restore cross-hatch pattern) I need special bearing that he sells not the stock ones from peugeot. The peugeot ones are ~90 euros his are ~150 euros.

 

2 questions :

- Is he right, or just trying to sell me his ring set ?

- For the price, should I go for special ring set, I would like one with a total seal second ring ?

 

Thanks you for your answer, and please feel free to comment anything I'll be glad to discuss !

 

Pierre

[dee205 3]

I'm no expert but wouldn't re-hoaning the bored restore the crosshatch pattern on them?

Then just use the normal rings....

 

Damien

[Pierre_b 3]

Hello,

 

I'm no expert but wouldn't re-hoaning the bored restore the crosshatch pattern on them?

Then just use the normal rings....

 

Damien

 

That what I thought too, but the bore is slightly larger so maybe the ring gap of the peugeot standart set of ring is going to be too wide.

 

The problem is that my machinist can explain exactly why his ring set is better. He just say that with stock ones, I will burn oil...

 

Pierre

[Hilgie 16 2 Cars]

I have used PerfectCircle rings, because my enginebuilder gave me the advice to use these with used liners (just honed, not bored).

[PumaRacing 2]

Hello,

That what I thought too, but the bore is slightly larger so maybe the ring gap of the peugeot standart set of ring is going to be too wide.

 

The problem is that my machinist can explain exactly why his ring set is better. He just say that with stock ones, I will burn oil...

 

Pierre

 

If the bore wear was so great that the ring gap was too wide then you need new liners not special rings. The std rings should be just fine if the liners are in reasonable condition.

[Pierre_b 3]

If the bore wear was so great that the ring gap was too wide then you need new liners not special rings. The std rings should be just fine if the liners are in reasonable condition.

 

Pumaracing :

Ok thanks for the answer, seems pretty obvious now it's said...

I'll check the ring gap whatever the choice will be, to be sure.

 

Hilgie :

 

Thanks, I'm in the same situation, I'll ask my machinist what kind of ring he offers. Has you machinist gave you any reason for is choice?

 

 

 

Just one question, what do you think of total seal ring ? I am searching for feedback for a set with a total seal second ring, but I can't find anyone with this kind of setup on XU.

 

 

 

Thanks,

 

Pierre

Edited February 20, 2006 by Pierre_b