Topic moved to relevent section. Yet another top guide Ben

Ben, if you go onto VS there are some good pics of the peterg manifolds I had, and of sbd16v's garret setup on an engine stand that can be seen really clearly.

Would be worth adding in as examples

I'm not registered mate, if you post the image here though that would be cool

Nortech manifold on Rob's Astra engine




build thread is here if anyone wants a read:
http://www.vauxhall-sport-forum.com/phpBB2/astra-gte-turbo-t1054,start,60.html


That setup is good enough for 170mph inside a mile, and 150mph in half a mile
Approx 400bhp

VERY good spread of torque though, its pulling hard from 3K-7K

Nice one chaps

Its such a shame those peterg manifolds are no longer available, they were pieces of art rather than just amazing engineering.

Except for being a pain to fit they are gorgeous manifolds, I really didn't enjoy wrapping mine in volcanic ash  .   

Might be worth highlighting the difference between external/internal wastegates which will influence turbo choice / manifold design.     

I would personally try and avoid pertek where possible, I know many people use them and they have been extremely helpful to me when desperate and are cheap but they are ultimately industrial suppliers and in my experience use bulky fittings with pain the ass threads.

Also worth adding an inline filter for the oil supply, something like this....

I agree on the pirtek fittings, some of it is a bit bulky, for me thats not a problem as my engine has a lot of space around it, but for some applications its awkward, so just a case of knowing when you can or cant use them.

Earl's filter is pretty much essential for a GT turbo, but of no real value on a T series generally.

I use one as im on a GT35R

I'm stupid,

Whats the difference between internal and external waste gates?