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Gsxr TB and DIY Zetec manífold
Micael - 1/2/07 at 09:30 PM

Plan to build me a manifold for my gixxer TB's. The thing is that the gixxer TB's are round and the ports on the zetec head are far from round. The bottom is flat and the top is pointy (to make room for the standard injector) What is the best way to go?
Shall i just make a flange that suits the head and then weld some round pipes for the TB's?
Or should i make a more smooth transition from the round pipe to the shape of the port?

the_fbi - 1/2/07 at 10:02 PM

http://www.mez.co.uk/ms10.html

Micael - 1/2/07 at 10:07 PM

Thanks for the reply

I have seen that before. But that
setup is based on the ST170 inlet. I plan to make my own inlet.

ecosse - 1/2/07 at 10:53 PM

I'm doing the same and reckon on using a steel or ally flange matched to the ports (ignoring the injector part of the port) with 38mm x 1.5 tube for the inlets
Intend to squeeze the tube at one end which should give a close match to the port oval and remain round at the other end for the TB's although I've not actually put it to the test yet

Cheers

Alex

bob - 1/2/07 at 10:59 PM

Have a look in conrodkids photo archive,he cleverly used a weber/zetec/DCOE manifold and adapted it to take the GSXR TB's

TangoMan - 1/2/07 at 11:12 PM

quote:
Originally posted by ecosse
I'm doing the same and reckon on using a steel or ally flange matched to the ports (ignoring the injector part of the port) with 38mm x 1.5 tube for the inlets
Intend to squeeze the tube at one end which should give a close match to the port oval and remain round at the other end for the TB's


This is exactly what I have done but with slightly larger bore pipe. Once welded you can dress with a die grinder to perfect the shape. Mine is now a very good match to the ports, with the exception of the injector cutout. The beneift of using ally is that you have more metal to play with so easier to blend with a bit of grinding.

Photos on my archive.

theconrodkid - 2/2/07 at 06:16 AM

Have a look in conrodkids photo archive,he CLEVERLY used a weber/zetec/DCOE manifold and adapted it to take the GSXR TB's



being that i am extremely clever,would you expect anything else?

Micael - 2/2/07 at 01:07 PM

Thanks for all reply.
I would love to use ally, but i don't have tools or the skills to weld ally
So i'm stuck with steel

Micael - 2/2/07 at 01:13 PM

I did the same on my plenum chamber when i used the standard fuelrail and injectors.

http://www.amanfamily.se/locost/gal/view_photo.php?set_albumName=Locost&id=DSC00715



quote:
Originally posted by ecosse
I'm doing the same and reckon on using a steel or ally flange matched to the ports (ignoring the injector part of the port) with 38mm x 1.5 tube for the inlets
Intend to squeeze the tube at one end which should give a close match to the port oval and remain round at the other end for the TB's although I've not actually put it to the test yet

Cheers

Alex