Restoring the power of a 1986 110bhp XU92C engine

[alargeau]

Keep us up-to-date!!

[amilo123]

I finally changed the manifold. The gaskets and screws are now all new, only the manifold itself is second hand, but it is a good one.

The mechanic worked on it for like 4 hours but he did a good job. Everything cost about 100eur. I didn't have a chance to drive it much since then, but on the trip from the mechanic to my home I did notice a difference. No more smell and the sound is much more deeper, it is really nice now:). I will have to go through a tunnel or something to really tell the difference.

btw, fuel consumption was at last fill-up 10l/100km, this was 60% city, about 30% highway and 10% mountain roads.

[alargeau]

Very good!!! You made a good choice.

[amilo123]

anyone know if the spark plug's electrode gap for this engine should be 0.6mm ?

[missa91]

0.6 or 0.7 but the difference is quite minor

[amilo123]

0.6 or 0.7 but the difference is quite minor

I am asking because I think mine are much larger than this:) I will buy a measurement tool and set them all to 0.6

[thefunkyboy]

I say on my documentation (Haynes) that it is 0.8 mm. But is there so a great influence between 0.6 and 0.8?

[amilo123]

I also saw in haynes 0.8 and 0.6 but in the car's book it says 0.6. I have NGK plugs by the way

[amilo123]

I finally got a chance to scan my original owner's manual.

I made a thread here viewtopic.php?f=14&t=1829&p=55168#p55168" onclick="window.open(this.href);return false;

[amilo123]

Just when I thought I got rid of all of the problems with the exhaust, the pipe that goes in the muffler broke from it and now it hangs...

Tomorrow I will search for a new muffler. Is it hard to replace? Can I do it myself?

[thefunkyboy]

The middle part or the last part?

Le last one is very easy, the other a little bit more difficult. But, it can be done with good material and WD 40 ^^

[amilo123]

The middle part or the last part?

Le last one is very easy, the other a little bit more difficult. But, it can be done with good material and WD 40 ^^

Just the last part broke. I took it off today to have a look, and it seems very easy to replace. It is corroded inside quite badly from what I saw, and when I shake it I can hear metal pieces moving inside...

I also took a look at the middle part, and it seems ok, but I can't really fit under the car as it has a low ride height so I can't be sure. I am thinking to replace the whole exhaust from the manifold. It couldn't be that expensive. And on an elevator it doesn't take more the 30min to be replaced by a mechanic.

What do you think? Is it worth replacing the whole system or just the last part, by me.

[amilo123]

the exhaust is done:)

[thefunkyboy]

The last part is only necessary. Change the whole system only if broken

[amilo123]

The car reaches 190 kph now No vibrations, not that much noise.

Only the oil gets quite hot. I was returning from the sea side on the motorway, cruising at 140 kph, and the oil reached almost 130C (but the light didn't came on), I has to stop for awhile for it to cool. It was quite hot outside, almost 35 I think, at 2 o'clock, so I think that was the main reason (and the speed of course...).

But today it was better, it reached 115 only, I think that it is within limits. It was colder outside, just over 30.

All in all I am quite pleased with the car now. I will soon do a dyno test.