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How do you bend exhaust pipes?
scutter - 13/4/03 at 08:54 AM

Tricky one this guys,

How do you bend exhaust pipes when there already made?

The lolocost manifold I've got seems to be sitting a bit high, I've moved the engine to the correct position so it fits under the bonnet.

There's about 2" clearance between the exhaust and the bay cross brace.

All help gratefully recieved. Dan.


Dave Ashurst - 13/4/03 at 11:48 AM

Hi Scutter
Personal opinion only:

If it was mine I wouldn't even try bending anything at the manifold end having got it as far as you have!

I'd concentrate on the pipe between the collector and the silencer with the silencer in it's final position. Maybe cut and re-weld the pipe ends and/or splice in some bends, which I'd buy ready made.

So far as I know, given certain general points of exhaust tuning efficiency (e.g. length, diameter and bend radii) then for road use the layout is largely a matter of personal preference.

Perhaps I'm not such a perfectionist as you but the set up in the photo looks really good to me!

I only wonder what's hiding behing the towel?

And did you transport the project up to Leuchars?

cheers
Dave

[Edited on 13/4/03 by Dave Ashurst]


scutter - 13/4/03 at 04:50 PM

Cheers Dave, the move to leuchars is in June, the towel is a mod I made to soak up all the oil leaks from the X-flow.

Most ro**n h**ds that I've seen have an exhaust like this, not suprising really with it being a lolocost manifold.

Will leave as is then and concentrate on getting it on it's wheels.

Thanks Dan.


Dave Ashurst - 13/4/03 at 05:54 PM

Ha Ha You think your funny saying that now, but you'll be in big trouble with your mum when you start the engine.


scutter - 13/4/03 at 06:10 PM

Hush, she no know it's missing

Dan.


Jon Bradbury - 16/4/03 at 01:37 PM

I have a R***n H**d and I've got the same problem (because I didn't want to mount the engine at too much of a slant). Any other advice on bending the pipe?


Jon Bradbury - 23/4/03 at 11:09 AM

On the RHE collector section (where the 4 pipes go into 1), the metal is a bit thinner than the pipework.

I found that, with a little brute force and at the cost of slightly crumpling the collector, I could get the tail pipe in the right position. The damage to the collector was minimal and it faces the body so won't be too visible. The exhaust is now just right.

(Usual caveats apply)

PS, mine was pointing down slightly too, and sticking out too far. Sorted now, though.

[Edited on 23/4/03 by Jon Bradbury]


scutter - 23/4/03 at 03:56 PM

Jon, Any chance of a pic or two just to give us an idea.

Cheers Dan.


billy - 23/4/03 at 08:28 PM

wots a rodin pood?????


Jon Bradbury - 24/4/03 at 09:44 AM

quote:
Originally posted by scutter
Jon, Any chance of a pic or two just to give us an idea.

Cheers Dan.


Yes, as soon as I get the chance. Be VERY CAREFUL doing this - I think I was lucky not to break something. The collector creases under load very suddenly (and with a nasty sounding noise) and I imagine that if you were to apply too much pressure it would really knacker it. I don't think bending it back is an option. Do bear in mind that the outlet pipe (from the collector) gets slightly distorted too - I'll post piccies to explain.


Jon Bradbury - 24/4/03 at 09:48 AM

quote:
Originally posted by billy
wots a rodin pood?????


A Robin Hood is a kit car made by Robin Hood Engineering who also supply parts for Locosts throught the "Lolocost" brand. Which kind of explains my presence on this bulletin board. (Also I am impressed by the quality of some of the answers I've read particularly to engineering problems you Locost builders are encountering.)


Jon Bradbury - 24/4/03 at 07:01 PM

This might happen because the pipes are a bit soft - not to worry because you'll be covering it with an SVA compliant exhaust clamp.

[Edited on 24/4/03 by Jon Bradbury] Rescued attachment Cnv0007.jpg
Rescued attachment Cnv0007.jpg


Jon Bradbury - 24/4/03 at 07:04 PM

..actually not as bad as it looks because it faces the bodywork and in any case because its all shiny its hard to make out. Rescued attachment Cnv0008.jpg
Rescued attachment Cnv0008.jpg


scutter - 24/4/03 at 07:33 PM

Jon, Many thanks for that.

I think we locosters are resourceful because we have to be, I mean no one else is going to do it for us.

Thanks once again Dan.