got set tubuller manifolds for my scoob,been advised to heat wrap them,was just wundering what the benefits were!!

 

as winter is coming up it will stop them getting a chill






soz, dont know.

 

I think it keeps the gasses hot and makes them flow better. And without it it could be a little hot down there otherwise.

 

keeps the exhaust gas's hot... hotter gasses flow better than cooler ones and also keeps the heat in the pipes rather than in the engine bay and heating parts you dont really want heated ie intercooler and the like

simple terms as thats all i understand lol

 

Exactly as Rigga says and it assists earlier spool. You can see the effect of this if you do three or four spool tests in a row.
From normal operating temp., floor the throttle in 4th from 1500 or 1700 rpm and see where you get one bar of boost. Say 3300 rpm. Repeat and it may be 3200. Repeat and 3100 but after that it may not improve as optimum temperature has been reached.
Do the test on a level piece of road in the same direction each time.

If you are about to fit tubular headers you could check the current spool on your O/E headers before you take them off and measure again with the tubular, once fitted. For best spool and power you need a set of properly ported O/E headers, heat wrapped with a purpose designed, matching up-pipe.

 

P.S Get a good quality wrap. There is a big variation in quality. I use DEI and it is applied damp but NOT wet.

 

and wear gloves when doing it.....

 

As wrapping pipes makes them hotter,does this weaken the welds making the pipes fail?

dipster

 

Most tubular headers seem to have plasticine welds anyway so its just a matter of time.....

 

I happened to use some heat wrap that came in a turbo blanket heat wrap kit about three weeks ago, it's now in little pieces on the dyno room floor
Absolute ****e! shame I threw the box away though or I'd tell you the name

Cooltek heatwrap however, I've used that on a number of cars abused, manhandled the parts and generally been not very kind to the stuff and it is still well and truely attached and in good nick. also got it bloody hot.

Also used the Le-mans wrap (lambswool look) on my own car and that has lasted well for what I've put it through.


Andy