3" exhaust built - pics here

[Timmmy]

Yeah,

I am interested to see how the welding repairs I made hold up, I'll be
surprised if I dont see recracking on the first fire-up.

If I had the time I was going to have the inside and outside of the
manifold coated, but the snow put a stop to that Idea.

I had looked into the 2 piece manifold, but it seemed like a hell of a lot
of cost for not a lot of gain. The other way is the tubular route, but I
had heard a lot about corrosion on tubular sytems too.

TO be honest I think I will be sticking with the cast unit as this is
supposed to be a low cost, low effort project. If I was to spend a lot of
time I think I would be using something other than the 5K as a base,
probably a URS4 or UK URQ20V. Or hate to say it, maybe even an Integrale
Elephante. (gotta love those early euro muscle rally cars)

Cheers

Timmmy

> Yes, ceramic coatings are fine, generally, though only coating the outside
> on the 10v creates worse cracking IME.  That manifold doesn't like to hold
> a lot of heat, honestly, with that 10v exh manifold, I'd just get it
> planed flat and run as-is, its a "piece of shit" all around, and if you
> can keep it from cracking to bits, that's about as much performance you
> can expecxt out of it.
>
> Javad
>
>>Hmmm
>>
>>That is odd, I think you and Jim are probably bang on with the assumption
>>of the formation of hard molecules in the iron, leading to microcracking
>>by the sounds of it.
>>
>>so opening up a whole new can of worms.....
>>
>>Ceramic coatings seem like a better alternative all round then? Any
>>experience with them?
>>
>>I am out of time for now so will be removing the wrap and putting
>>everything back togeather over the next 2 weeks (working audi for
>>Christmas present with any luck) as driving the Miata in the snow is fun
>>but a bit deadly really.
>>
>>Cheers
>>
>>Timmy
>>
>>
>>> The DP flange is cast as well, and exhibits the same exact destruction,
>>> I
>>> had a downpipe completely disintegrate on me that I had wrapped, really
>>> odd, even the cat was full of pieces of it, it had just began flaking
>>> and
>>> crystalizing, very odd.
>>>
>>> Javad
>>>
>>>>Morning Javad
>>>>
>>>>Well....Bummer....and it looks so pretty, and the theory is great, but
>>>> it
>>>>seems like the general concensus points to my removing the wrap   :.(
>>>>
>>>>So I will be getting out the snips this weekend.
>>>>
>>>>So here's another question for yall then;
>>>>
>>>>the downpipe - is the O2 sensor housing cast iron or cast stainless? I
>>>>thought it was cast stainless as there doesnt seem to be any real
>>>>corrosion at the joint to the stainless downpipe as I would have
>>>> expected
>>>>from welding stainless to cast iron.
>>>>
>>>>Timmy
>>>>
>>>>
>>>>
>>>>> I absolutely agree with Jim, that exh. manifold will disintegrate
>>>>> into
>>>>> powder
>>>>> in about 8 months with that wrap on it, BTDT.
>>>>>
>>>>> Javad
>>>>>
>>>>> In a message dated 12/9/2003 3:34:42 PM Pacific Standard Time,
>>>>> jeg1976 at yahoo.com writes:
>>>>> Looks good!  I hate getting and giving news like this,
>>>>> but.....  You might want to take the wrap off that EM.
>>>>> I can't even describe how fast cast iron will
>>>>> disintegrate from that stuff.  This goes for the cast
>>>>> iron part of the DP as well.  You can wrap everything
>>>>> back from there because it's stainless though.  If you
>>>>> plan on taking the EM off in a year for a header
>>>>> upgrade or something, than I'd just leave it on:)
>>>>>
>>>>> HTH,
>>>>>
>>>>
>>>>
>>>
>>
>>
>