Toyspeed.org.nz Message Board

by **IH8TEC** » Mon Jul 24, 2006 10:28 pm

can anyone here or someone know where to get cheap 2 1/2 inch mild steel mandrel donuts? and 2 1/2 inch flexi?

Website · by Al » Mon Jul 24, 2006 10:39 pm

Autoflex flexis can be had at Tyco flow control, around $50.

by **IH8TEC** » Tue Jul 25, 2006 10:10 am

just called them and they are $95, anyone know any cheaper?

by **99gtt** » Tue Jul 25, 2006 4:11 pm

What are you using them for as mandrel bends would be better than doughnuts.

by **IH8TEC** » Tue Jul 25, 2006 4:12 pm

dumppipe off turbo, wih flexi going under sump

by **drftnmaz** » Tue Jul 25, 2006 4:54 pm

tube and steel in east tamiki.... about $25 for a 180degree mandrel m/s bend. and they have bins of s/s seconds for cheap as well... will normally hook up deals as well.

if you find any cheap flexi's i'd be keen as too hear i'm just about to make a new exchast (stupid new law)

by **sergei** » Tue Jul 25, 2006 5:41 pm

99gtt wrote:What are you using them for as mandrel bends would be better than doughnuts.

what are the advantages of mandrel bend vs doughnut?

by **99gtt** » Tue Jul 25, 2006 6:24 pm

doughnuts are manufactured as that and require welding on the seam for strength. The bends are mandrel bent so dont loose any wall strength. Thats my best explination unless any one else can describe in more detail.

AW11 Track Toy · by **Caveman** » Tue Jul 25, 2006 6:36 pm

99gtt wrote:doughnuts are manufactured as that and require welding on the seam for strength. The bends are mandrel bent so dont loose any wall strength. Thats my best explination unless any one else can describe in more detail.

Huh?

stainless tube is seam welded as well so its the same difference. If your getting into cold drawn steel expect to pay an arm and both testicles.

Steel and tube are pretty good, I have a shit load of schedual 40 2.5' elbows you can have for $5 each, Mild steel. S/S is better though because decreased weight. Tube benders in east tamaki on cryers road sell 2.5 elbows for $15 as scrap or $25 new. Scrap is ok to use, the only difference is its not completely round (near enough for exhaust)

by **Bazda** » Wed Jul 26, 2006 11:23 am

99gtt wrote:What are you using them for as mandrel bends would be better than doughnuts.

how the hell can u justify that lol
and for strength...its for an exhaust, hence the flexi.

im the one making the downpipe, its a pretty tight fit so a mandrel bend would not fit into the space we have or thats what we would be using as donuts are expensive.

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donuts and flexis :)

donuts and flexis :)

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