Aussieveedubbers · Tech Talk

44idfs on 48mm manifolds

https://forums.aussieveedubbers.com/threads/82334/44idfs-on-48mm-manifolds

cnfabo ·

i have just realised i have 44'idf's on 48mm manifolds,. so will this effect flow and HP. im guessing its not good for performance but some tech info on this would be great...

thanks...

cnfabo ·

hhmmm, NO ONE??

Bizarre ·

I have been told they will fit
It is a one size manifold

Craig Torrens ·

99% of the IDF manifolds that you buy today are suited for the 48 size.........It will make bugger all difference.

Bizarre ·

What about the bottom end??
Mine are "small bore" manifolds and suit my stock heads

if yours are "48" manifolds are they some H-U-G-E mother manifold port

That may effect stuff if you have stock inlets on your heads

matberry ·

Most manifolds are this way. It's the way it is and although I like to see back to back tests, I don't think you have a lot of options. It's not a big deal but I agree it doesn't look the best for low speed response.
Just means you should build a bigger motor and run 48's. 😀

cnfabo ·

they are match ported to the heads and are not stock ports. i thought i had a miss match and that 44 idf manifolds would come to 44mm at top of manifold. but cool, if thats the case then there staying on... thanks boys....