Glen you showed me a piccy of evils manifold and now trying to find someone pref in uk that can mandrill bend me a manifold prob as complictaed as the one your picture showed, also want to find out about ceramic coating and heat insulation.
Gary, Hayward and Scott in Basildon can mandrill bend stuff.
They are not cheap, but they are the daddies when it comes to this sort of stuff.
Dan
Let us know how u get on G11ARY as Danny has given me their details too for my manifold (ideally mine will be very similar to Allistairs that CPC did as that was for Evil7s triple...).
Make sure they use some nice thick SS :-)
R.
My mate has just had one built by Haywood & Scott for his Cosworth. I think they are the only place in the country to bend 4" pipe. They did a realy good job and it had a great finish.
Can u get any details? pics, price, build time etc?
What materials do they work with? Needs to be pretty thick stuff to withstand a tuned rotors heat without cracking :-(
See if you can some pics of the work please mate!
Cheers,
Rich
Rich, they make complete exhaust systems. I.E. from the exhaust port down to the back box. They have been doing this for years and years.
I am tempted to take my engine there, find/borrow a nice big single turbo and get them the make up the header pipe for me.
As I have said before, they are not cheap but if you was to have any problems Ian and his crew would be more than willing to sort it out.
I am going over there on Saturday morning for a couple of bits, and will have a chat with them.
Dan
Hi Gary,
These guys that Danny has suggested sound pretty good. I am surprised that there aren\'t more companies on hand in the UK that can do it - I\'m sure there are, but must be hidden somewhere! :)
Trevor Kier has a friend who does fabrication work (has done on F1 cars I believe). His Username on here is "Racing Roots" - I haven\'t spoken to him for a while though.
Drop him a PM, he should be able to point you in the right direction.
.ps Good work costs £££\'s, but it is worth it in the long run.
QuoteOriginally posted by gbutcher
Hi Gary,
These guys that Danny has suggested sound pretty good. I am surprised that there aren\'t more companies on hand in the UK that can do it - I\'m sure there are, but must be hidden somewhere! :)
There is Glen! It\'s just most of the FD owners are down south :)
Up north we have both Tube Torque and Jp Exhaust\'s in my home town of Macclesfield. Not sure on bending 4" though but are pretty well known without the industry for providing quality.
I\'ll get Contacts and Numbers for anyone interested.
Regards...
Jus
Yes please Jus.
R.
Hey g111ary, a few quick tips for when you have your manifold designed, all open to discussion.
1. Wall thickness, the rotary produces alot of heat, indissputable-although heat transfere is very important. Thicker walled material will actaully transfere the heat quicker. This is bad because heat is the energy of power in this case.
2. Material, use stainless steal, this is the best option.
3. Diameter of tubes, smaller tubes create better exhaust gas velocity. They also mean that the pressure differential will be greater between each side of the exhaust blades.
4. Also consider that hot spots can easily be created by poor design, perhaps through sharp edges, poor intersections or too many exhaust pulses through one area of the manifold. Hot spots cause the loss of heat and therefor in this case power.
are you sure about using stainless ? I though most competition cars used carbon steel manifolds due to the cracking problems that arise with stainless (due to the high coefficient of expansion I think)
Good reasons to use stainless over other materials.
First of all stainless has low thermal conductivity. Stainless also has very high coefficent of thermal expansion. It should weather well and yes may crack or warp eventually, but it is the best choice in comparison to a cast manifold.
I do not know anything about carbon, but bear in mind in a manifold you are looking for a material that has the poorest ability to transfere heat. Therefor allowing the turbochgarger to use the heat.
having it ceramic coated internally should help then ?