Mythbuster: continuing project thread of my 1303 '75

[paul_f]

I bet that was quite daunting chopping of the collector - the point of no return!

Could you do me a favour please - measure the ID of the single pipe coming from the collector. I need to order a cone to match my new silencers with that pipe and mine is currently wrapped in exhaust wrap as well as being covered with masking sheets as I am painting the engine lid hinge panel on my bus

Cheers
Paul

[Wally]

Originally Posted by paul_f

I bet that was quite daunting chopping of the collector - the point of no return!

Indeed it was!
I have hesitated many times doing this and contemplating wheather it was possible to rearrange the entire primaries backwards coming together under the flywheel/tranny, but I think there is just too little room if you want to keep the underside of the car level with the T4 sump...


Pipe outer diameter is 42mm, wall is 1,5mm, inner is therefore 39mm and confirmed by measuring, although at the collector itself I measured 40mm ID.

[paul_f]

Originally Posted by Wally

Indeed it was!
I have hesitated many times doing this and contemplating wheather it was possible to rearrange the entire primaries backwards coming together under the flywheel/tranny, but I think there is just too little room if you want to keep the underside of the car level with the T4 sump...

I agree, I don't think it would be possible to have them going backwards and stay level with the sump.

I'd like to cut and move slightly backwards the pipe that runs near the pulley as it is very close, but I think it will be quite difficult to do nicely without remaking that section.

Thanks for the measurement, though I wanted the one at the other end of the collector. I think it is 54mm OD but I am not certain.

Cheers
Paul

[Wally]

Originally Posted by paul_f

I'd like to cut and move slightly backwards the pipe that runs near the pulley as it is very close, but I think it will be quite difficult to do nicely without remaking that section.

Problem with that part is that it is the 180 degree section that curves right behind the rear apron. If you move it further away from the pulley, it gets close to the apron... You may get away with that, but I have less room as you know

Thanks for the measurement, though I wanted the one at the other end of the collector. I think it is 54mm OD but I am not certain.

Cheers
Paul

Sorry...but you're correct. That part is OD 54mm.

[Wally]

Made some nice progress this weekend:



Trial fitting the too big of a turbo.
Looks like it might even sort-of fit Be aware that I have a bit more room there as my engine is moved a few cm further backards.
The 4" (!..) air inlet will however collide with the Cup strebe so will need to make s/th for that, for which I already have an idea