exhaust manifold removal

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bmarler
Posts: 110
Joined: 22 Dec 2008, 17:33

exhaust manifold removal

Unread post by bmarler »

it seems i need to remove the exhaust manifold on my s1 sport. it needs some repair at the lower flange. i looked in the manual for instruction regarding this and found almost no information. so my question is this, how big of a job is this? is there room to snake this thing out without too much trouble? i'm trying to decide when to do this job, it's a fairly small problem to fix and can wait till weather is not so good. i don't want to screw up my summer drive time if it's going to be a big job. thanks in advance!
brian
'67 fulvia sport, '61 appia vignale
lanciagarage
Posts: 45
Joined: 21 Dec 2008, 20:37

Re: exhaust manifold removal

Unread post by lanciagarage »

Its not that long a job ...but the two central bolts at the top of the manifold are quite difficult to get to and you need patience. 1/4 of a turn per application of the spanner if you are using an open ended spanner. You can also use a very long T-Bar and 13mm socket which you need to thread between the branch and then put the socket on once it has been threaded through. Oh and it is a huge help if you have the car on a lift

I'd estimate 30 minutes to get it off and 30 to get it back on again. Only 8 bolts!

Phil
Phil Laing
Cape Lancia Club - South Africa
www.lancia.za.org
lancialulu
Posts: 244
Joined: 21 Dec 2008, 19:53

Re: exhaust manifold removal

Unread post by lancialulu »

And a few grazed knuckles! Yes and take the wheel off so that some can be eased through the wheel arch.

Putting back is a bit of a challenge with the gasket needing to be held by one bolt first of all.

Care not to round off any of the 13mm bolt heads. On my manifold you cant get a socket on virtually any bolt and indeed on bolt was a special with a 12mm head to clear the collector pipe (gp4 admitedly) .

Shoudldn t take more than a couple of hours (see its going up..)

The lower joint generally is more of a problem with nuts/bolts rusted up.

Tim
bmarler
Posts: 110
Joined: 22 Dec 2008, 17:33

Re: exhaust manifold removal

Unread post by bmarler »

thanks for the advice, i think i will attempt the repair sooner than later. the lower joint fasteners are really rusty, i think i will just cut them with a small cut-off wheel on a die grinder if i can fit in the space.
the reason i'm doing this is i'm getting some deceleration backfire in the exhaust. (after fire) i found some holes in the welds at the lower flange and thought they might be letting in a little air and adding to the unburned fuel, thus the after firing. might be too far down the line to cause this condition but the holes need fixing regardless.
guess i'll stock up on bandages for my knuckles and give it a try.
thanks again,
brian
'67 fulvia sport, '61 appia vignale
lancialulu
Posts: 244
Joined: 21 Dec 2008, 19:53

Re: exhaust manifold removal

Unread post by lancialulu »

Brian

My experience is all GOOD fulvias pop a bit on the overrun. In my opinion it is what makes them so charming and characterful (and also not that economic!).

The exhaust manifold is quite enclosed and does get hot (ive seen mine glow in my garage while testing the engine at above tick over before now).

Tim
Bart Verbeek
Posts: 267
Joined: 17 Dec 2008, 19:54

Re: exhaust manifold removal

Unread post by Bart Verbeek »

The first time you dismantle the manifold is a pickle. But it's only a pickle if you haven't got the right tools. Nothing fancy though, but you'll see it's a bit of trail & error in finding the right tool for each bolt. It's also a good thing to weld bolts on the manifold on the end the 2-in-1 piece fits on (if it isn't allready done). The second time it's easy and later on you'll do it blindfolded and hands on your back! :P

bonne aventure!

Bart
lancialulu
Posts: 244
Joined: 21 Dec 2008, 19:53

Re: exhaust manifold removal

Unread post by lancialulu »

I am already blind folded by my sport wing, bonnet, grill and oil cooler.....1600 engine is a squeeze.

tim
bmarler
Posts: 110
Joined: 22 Dec 2008, 17:33

Re: exhaust manifold removal

Unread post by bmarler »

welding studs in the lower fitting is a terrific idea! i will surely do that.
regarding the 1600, is it a tighter fit than the 1300? i thought the block size was the same. maybe larger exhaust tubes?
brian
'67 fulvia sport, '61 appia vignale
lancialulu
Posts: 244
Joined: 21 Dec 2008, 19:53

Re: exhaust manifold removal

Unread post by lancialulu »

Block is taller as stoke is 5mm longer! Cam chain longer as a result. And the inclined angles of the bores are narrower!!!

You wouldnt think 5mm makes much difference....
lanciagarage
Posts: 45
Joined: 21 Dec 2008, 20:37

Re: exhaust manifold removal

Unread post by lanciagarage »

hmmm, I thought that it was a little more difficult doing my 1600 than the 1300. Yes you are right, It is a little tighter as far as clearances go with the 1600. Now I know why I also have bruised and cut hands
Phil Laing
Cape Lancia Club - South Africa
www.lancia.za.org
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