Donuts?

[TLDV8]

Anyone know of a source for mild steel or stainless steel donuts ?

<img src=http://www.roadraceengineering.com/parts/tweekerparts/donuts.jpg>

[Madness]

There used to be a guy making the Steel ones in his garage in Lower Hutt. He was making them for Southward Tube Mills (now defunct?). He's probably still going. The guys at American V8 Performance in the Hutt would know. He used to do the cashies....:yes:

Edit;
If you just want a few, ask at your local Pit Stop or Midas??

[Motu]

Chase or Wolf.

[WRT]

I've heard of "pig bait", but what's this? Some kind of "pig lure"?

[imdying]

Yep. 44mm ones are out of stock till the end of the week I believe. PM me to remind me, and I'll flick you the contact details.

/edit: Oh yeah, they're over $100 each!

[Flyingpony]

what are they for?

[ManDownUnder]

what are they for?

Weight loss.

Sugar free
Fat free
High in iron
Last all day...

what more could you ask for?

[riffer]

Try Road and Track in Lower Hutt (http://www.dminternational.co.nz/distributors.phtml) if all else fails

[TLDV8]

what are they for?

It starts with the whole rearend of the TL now being held up by magic.

<a href="http://photobucket.com/" target="_blank"><img src="http://i30.photobucket.com/albums/c345/manurewa/SSF.jpg" border="0" alt="Photobucket - Video and Image Hosting"></a>

[TLDV8]

Thanks for the info,i will look into it like mirrorman.

[Crisis management]

It starts with the whole rearend of the TL now being held up by magic.

Bastard, you've got me intriqued now....spill the beans or we start searching the city for you! :scooter:

[geoffm]

Wolf mufflers in Auckland stock them. I bought 2 180 deg bends for a muffler for the car. They are 'kin dear - about $40 each from memory for 180 deg bends. I figured in the end I would have been better off taking the car to a muffler shop rather than DIY...
Geoff

[xwhatsit]

what are they for?

As nobody else has provided a sensible answer, I will.

They're for exhaust manifold fabrication. You cut them according to the radius of bend you want, then just weld them together to make the bendy bits.

[TLDV8]

For folk looking for 90 and 180 degree bends in mild steel / 304 or 316 stainless.
Tube Benders in Cryers Road / East Tamaki / ALKD have great prices and no doubt are supplying most retailers.
Seem to remember i was getting stainless bends for around $15.
They might still have their bin of reject bending jobs which was cheap buying,all sizes and shapes.

[Crisis management]

As nobody else has provided a sensible answer, I will.

They're for exhaust manifold fabrication. You cut them according to the radius of bend you want, then just weld them together to make the bendy bits.

Thanks but are you sure?? Usually bends rather than donuts would be used for this. Donuts are obviously far harder to fabricate than a bend so I don't think I would be chopping one up for an exhaust.

C'mon TDLV8, spill the beans.....pretty please????

[imdying]

Donuts are made to a much tighter radius than stainless tubing is normally mandrel bent to, that's why you use them instead of bent tuing, and why they're a lot more expensive.

[Madness]

Thanks but are you sure?? Usually bends rather than donuts would be used for this. Donuts are obviously far harder to fabricate than a bend so I don't think I would be chopping one up for an exhaust.

C'mon TDLV8, spill the beans.....pretty please????

It's exactly what they are used for. The radius in a donut is tighter than achievable by bending without crumpling the tube. The donuts are two pressed halves, tacked together to form a donut-shaped tube. When forming extractors for V8's etc you need to ensure equal length for each manifold at the optimal length according to carb/cams etc. It's not just bend it down & point 'em together at the collector.

I lost many a hair on my fingers acting as a vice holding little donut segments together for a mate. Prick.