Turbo to Intercooler piping
Turbo Mini Forums

I received my gt1752 turbo today and I am working out what piping to buy for the induction system.

There is a difference in size between the OD of the gt1752 compressor outlet and the inlet port of my intercooler: The compressor outlet being 52mm O/D and the intercooler inlet being 60mm O/D
Although this is only 8mm difference on O/D, what effect this will have on pressure and flow?

If there is an effect, would I be better having the smaller O/D from the compressor housing outlet, right up to the intercooler, then enlarging it to suit the intercooler inlet, or enlarging the pipe directly after the compressor outlet and having a long larger diameter run through to the intercooler?


thanks

’77 Clubman build thread
http://www.turbominis.co.uk/forums/index.php?p=vt&tid=618189

Siamese 5 port EFI testing
http://www.turbominis.co.uk/forums/index.php?p=vt&tid=611675

I use one of these:

http://cgi.ebay.co.uk/63-51mm-2-Reducing-e...=item4151b6f109

Reduces any pressure loss to a minimum. A straight taper would be better but will not fit in most instances.

Saul Bellow - "A great deal of intelligence can be invested in ignorance when the need for illusion is deep."
Stephen Hawking - "The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge."

I've used similar (straight reducers, and elbow reducers) but always in the silicone part, not the rigid piping - just because it's easiest.

Sometimes making it all fit sensibly is better than the complex maths like "un plat de rien comme le brouillard" :)

Schrödinger's cat - so which one am I ???

50mm for the main piping with 60mm reducers on the intercooler.

Just because it's so much easier to fit.

In the 13's at last!.. Just

Thanks for reply's. Silicone parts, alloy bends and vacuum pipes on order.

’77 Clubman build thread
http://www.turbominis.co.uk/forums/index.php?p=vt&tid=618189

Siamese 5 port EFI testing
http://www.turbominis.co.uk/forums/index.php?p=vt&tid=611675