Udo Becker IDA manifolds

[1950split]

Hi Guys,

Happy New Year !

I'm seriously thinking about upgrading my 2110 engine with IDAs and use them with DRD L6 heads I'd buy at aircooled.net and a web 86b cam.

So far I'm using CB offset manifolds with 45 DRLAs and I need to use 3 1/4" air cleaners in order to be able to close the decklid.

I want to keep my thing fanshroud  and use air cleaners as it is a street car (not IGT type ones but k&N preferably).

Looking for a short type manifold I came accross 2 :

- Gene Berg 587 but they seem really short and not the best in terms of cfm ;
- Udo Beckers as seen on this website : http://www.vwparts.net/CSP129712148.html (actually they are not CSP products)

What do you think of the second ones in terms of fitment, performance and so on?

I'd rather use a pair of Gene Berg 590 but I guess I'd have some clearance issues

Thanks

Phil

[ALB]

Why do you say the Berg manifolds are not the best in terms of cfm?

[1950split]

Generally speaking, with IDAs, short manifolds are not the best, the shorter the more tortured is the mixture's way to the heads because of the sharp curves. I just read the Berg 587 are 4 3/8" tall, Udo Beckers are 5 1/2" tall, it is therefore obvious that Bergs 587s have sharper curves..

[Udo]

I think the cfm rates depend on the porting work... . May be you need no welding on mine to get bigger ports. Length is as seen on the picture (125mm) . Clearance to fan is a little more than the Berg's.

Udo

[1950split]

Thanks for your comment Udo..

[Trevor Pippin]

I have Scat short manifolds with Ramflo aricleaners and they clear a Thing shroud. I had to make a small notch on the right hand side of the shroud to clear a small interferance with the IDA carb but other than that there is room.