Adapting GSXR ITBs to DCOE Manifold

73Inka2002 · Post by **73Inka2002** » Tue Jan 24, 2006 11:12 pm

Hi, has anyone found a source for 'blank' DCOE flanges that can be used to adapt GSXR ITBs to a good ol' fashioned Weber DCOE manifold? Any other suggestions to adapt GSXR ITBs to a Weber DCOE manifold? I'm assuming that you could punch some 45mm holes in some 3" aluminum stock, but I'm not sure how pretty that would look.

Thanks in advance,
Robert

woh · Post by **woh** » Wed Jan 25, 2006 5:48 am

Try Pierce manifolds. He has a number of different adapters. Best to e-mail him and ask specifically what you need.

http://www.piercemanifolds.com/

GS guy · Post by **GS guy** » Wed Jan 25, 2006 6:28 am

You also might try Aaron @:
http://honda-tech.com/zerothread?id=141 ... d=19362899
email: weirtech@cogeco.ca

He makes a slew of nice quality exhaust flanges (only mild steel though) at very reasonable prices - but also custom turbo adapters, aluminum intake flanges and does custom work. I'm sure he could whip up either the flanges - or maybe a direct interface part between DCOE flange to bike throttle body?

Make sure you specify the actual opening sizes you want - as he typically makes parts from the gasket, which sometimes have larger opening than you want in the actual part. Good source of flanges though. I picked up a set of exh. flanges for my Subaru conversion and looks like they'll work out great.
Jeff

Bill Shurvinton · Post by **Bill Shurvinton** » Wed Jan 25, 2006 9:48 am

I had a load of flanges made a while back. It then transpired that a billet flange/tube was a better way to do it, but never looked at pricing. Without those there is always some form of fabrication required.

allen22 · Post by **allen22** » Wed Jan 25, 2006 10:01 am

Man, that guys does some nice work, and really decent prices too!

allen

RdSnake · Post by **RdSnake** » Mon Feb 13, 2006 4:19 pm

any luck finding an adapter to fir gsxr itbs to dcoe manifold?

73Inka2002 · Post by **73Inka2002** » Mon Feb 13, 2006 4:53 pm

RdSnake wrote:any luck finding an adapter to fir gsxr itbs to dcoe manifold?

No, unfortunately not. I contacted Aaron (mentioned in the post above) but he is "out of the flange business." I assume I'll purchase 2 DCOE flanges from Pierce Manifold (about $100 for both) and then some 45mm id tubing and have it welded up. I suppose that will work.

Anyone have any other suggestions?

Thanks,
Robert

rs2000 · Post by **rs2000** » Mon Feb 13, 2006 8:08 pm

i read somewhere that if you have the right gsxr tb's then the original mounts will bolt up to a dcoe manifold if you enlarge the mounting holes slightly.. i can't remember what gsxr tb's this was for though.. i think it was around an 01 model.. might be worth checking out

73Inka2002 · Post by **73Inka2002** » Tue Feb 14, 2006 9:51 pm

rs2000 wrote:i read somewhere that if you have the right gsxr tb's then the original mounts will bolt up to a dcoe manifold if you enlarge the mounting holes slightly.. i can't remember what gsxr tb's this was for though.. i think it was around an 01 model.. might be worth checking out

Thanks for the advice, I'll investigate. Does anyone know what those mounts are called? I'd like to search ebay and other spots on the web to see if they're readily available.

Thanks,
Robert

Ahutchy · Post by **Ahutchy** » Wed Mar 01, 2006 9:52 pm

Hi Robert,

I made an adapter up but it is a bit of a bodge.

I just flicked through the pics I took of the project and blow me down I didn't take a pic of the thing!

Anyhow it was basically a bit of 8mm plate (aluminium) and I cut it out to screw up to the exisiting weber/dellorto manifold (on an old Alfa) and had four tubes welded over the 42mm holes. The tube size was a bit small though so lots of grinding and shaping and then also had to "shim" the tube with some extra silicone tubing before putting the actual boots over my adapter and the TB's.

My alloy tubes fitted flush up against output side of Tb's to give a more or less smooth transition into the adapter and then orig manifold.

All ported and smoothed though to match my head mods.

I still cant believe I didn't take any pics of something I spent two days making.

Cheap though! $80 for welding and materials!

Did I mention I spent another two days before I started staring at it trying to see an easier way...

There wasn't, at least I don't think there was.

Good Luck with it, Andrew.

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Adapting GSXR ITBs to DCOE Manifold

Adapting GSXR ITBs to DCOE Manifold

I have just been thru this...