The roof takes 2 minutes but needs defintely 2 persons since it's too heavy for one, also never forget to pull the seat frontwards otherwise the locks will scratch the back surface of the seats.

The Ansa has 2 oval mufflers one per bank which are independed from each other.
The original Jalpa without catalyst is a big rectangular box, the US version with catalysts is very special.

This is the US exhaust with catalysts


This is the Ansa, which was originally made for the P300 Urraco


The original one I uploaded as attachment.

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tav30.jpg (53.0 KB, 71 views)

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RaymondQV
Countach QV Ex-Mimran #GLA12997, Urraco P300 #20530 sold in August 2008, Jalpa #FLA12203 sold in May 2006
www.countach.ch
www.jalpa.ch

When Frank Sinatra got his Miura S in 1970, he said: “If you wanna be someone, buy Ferrari - If you are someone, you own a Lamborghini”.

Thanks Raymond,

Do I see it correctly, that the Ansa has polished tips, and the standard one doesn't?

The US version with catalytic converters and the “mixer box” has chromed tips, sounds and looks great. When the cats heat (and speed) up the exhaust gas, the sound gets even better. However Weber carburetors have a tendency to run quite rich, which sometimes is “too much food” for the cats, which in turn can melt its internals, resulting in poor high end torque. This happened to me.

With a little practice two people removing the roof and placing it behind the seats can be done in 30 seconds, the same in reverse. It can be done by one reasonably strong person at double the time, but at the risk of scratching some paint.

Laust

Thanks Laust.
The one i'm looking at is a European car, so probably no cats.
Would be a shame if it's too hard to install the roof, when i'm out driving on my own...

Whenever you have catalytic converters change them against metallic ones.

My Jalpa has no converters, only the air pump and we managed to have 33ppm HC at idle with a car which has 72t km on the odo...

the roof weights about 30 Kilos...

__________________
RaymondQV
Countach QV Ex-Mimran #GLA12997, Urraco P300 #20530 sold in August 2008, Jalpa #FLA12203 sold in May 2006
www.countach.ch
www.jalpa.ch

When Frank Sinatra got his Miura S in 1970, he said: “If you wanna be someone, buy Ferrari - If you are someone, you own a Lamborghini”.

I take out the top by myself, but you really have to be careful not to scratch it. My exhaust is the stock US with convertors. It's really quiet, too quiet for a car like this. I thought about removing the convertors, or finding some free flow ones.

My Jalpa has a different Ansa system that sounds very good. Canadian car so it is a little different. But is not stock as I still have the bread basket that shrouded the stock item.

To take the roof out, you need to put both seats forward, step in behind the one seat for leverage and slowly remove from pins and ease down. You do need to be careful on your own, but I do it all the time.
The latches need a little finessing for the height as to be just right to get them to lock.

Attached Images

Jalpa2A.jpg (15.6 KB, 60 views)

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Had Enzo been a gentleman...The greatest cars on the planet would have never existed.

Jalpa FLA12194
Countach ELA12667

Thanks guys

Apparently, but not too often:
(first picture post, so I hope it shows up)

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DSC_0321.JPG (60.2 KB, 54 views)

Even with my partially melted converters (maybe 30% blocked flow) my Jalpa had a quite loud exhaust, which was complimented by others. So I strongly suspect that yours are melted even more. It is quite easy to inspect visually, just take the cats off and look into its inlet. The internals should be a honeycomb structure and not as the picture shows.
I simply took a stick and ground out the bad part of the converter (70% left) and hope to control the air-fuel ratio well enough that it doesn’t occur again.


Some very quick catalytic converter history:
The main pollutants to clean up are hydrocarbons (CH), carbon monoxides (CO) and oxides of nitrogen (NOx).
The early converters were 2-way cats, which through oxygenation converted the CH and CO to H2O (water) and CO2 (carbon dioxide). The internals of the converters started out as a pellet structure, which were quite restrictive and later they made a more free-flowing honeycomb structure. The needed oxygen was typically supplied by a smog pump.
Later they found a viable catalyst for the NOx, which then got converted to N2 (nitrogen) and O2 (oxygen). By making this the first step in the converter, the released oxygen could be used for the following two processes without the need for a smog pump.
The catalysts are platinum, palladium and rhodium (I am not sure which does which) dispersed on the surface of ceramic internals (honeycomb) and the higher the concentration the quicker the cat became active, however it took a while to realize, that a high concentration could localize the heat which in many cases (running rich) was high enough to melt the ceramic, blocking the flow.
As a result the catalyst concentration got optimized (reduced) so the heat got distributed throughout the honeycomb. At the same time the flow through a converter has improved so it presents less of a restriction than a muffler. The catalyst reduction obviously also had a positive effect on the price so a general purpose cat now costs $50 to $100.
Additionally an even sturdier version was developed with a core of spiral wound corrugated stainless steel sheet (as Raymond referenced).

I suspect that the Jalpa converters are 2-way with high density catalysts, so new converters should work even better.

Laust

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P1120084C.jpg (53.1 KB, 57 views)