Not exactly a review but i can say i now get 10psi at 3000rpm which is very good and im sure with a few tweeks to the ebc it will be slighty better.

What do others recon?

 

Im also using Z1 5 bolt split downpipes, which are behind the gt25r turbos. So in my eyes these manifolds are a good buy, next test will be to see how much boost they can hold high up the rev range.

http://cgi.ebay.co.uk/NISSAN-300ZX-CAST-IRON-EXHAUST-MANIFOLDS-Z32-V6-89-96_W0QQitemZ140348919686QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item20ad728f86 these ones? might invest in some myself any reason why you chose those over the stainless ones? http://cgi.ebay.co.uk/NISSAN-300ZX-Z32-TURBO-EXHAUST-MANIFOLDS-FAIRLADY_W0QQitemZ280439703412QQcmdZViewItemQQptZUK_CarsParts_Vehicles_CarParts_SM?hash=item414b824774

 

dan.:tongue_smilie:

never seen those stainless ones before, pretty sure those stainless ones would probbaly crack etc very risky

same setup as moi...:winkiss:

never seen those stainless ones before, pretty sure those stainless ones would probbaly crack etc very risky

 

what makes you think the stainless ones would crack big J?

Stainless manifolds came out many years ago, manufactured by some top companies too, however stainless was not able to take the high temps and cooling down coupled to the weight of the turbo's. They all pretty much soon started cracking.

This why Greg dupree developed the Inconnel manifolds, a lot more expensive but his time and investment paid off and he has supplied many sets and would gaurantee them if used with a flexi pipe in the down pipe.

 

Then came the Mike smith manifolds and the Greg dupree ones stopped.

Then came all the copies of the Mike smith ones and hey presto lol

hth

smithy

> never seen those stainless ones before, pretty sure those stainless ones would probbaly crack etc very risky

 

cast manifolds can crack just as easy...as with everything it depends on the quality of the materials used.