Quote:
Originally Posted by ewrxion87
with the 8cm housings... Monkeee - can you explain this for me...is this in length meaning it will be tight up against my dump pipe etc or does it mean the diametre... and what are the benefits... im seeing this alot but no actual definitions.
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8cm refers to the area in cm2 of the exhaust housing opening that flows to the exhaust turbine.
Smaller housing = faster spool but lower top end.
larger housing = slower spool but possibly more top end.
It is usually listed as area ratio 'a/r', Here's a better explanation:
http://www.turbobygarrett.com/turbob...housing_sizing