Turbo advice please
Posted: 30 Dec 2010
two avenues of advice required please:
Shaft play (no, not a kind of foreplay). Bought (vauxhall) turbo off ebay, bloke says no play whatsoever, turns out to be bolx as there is definitely play - no doubt about it. Whilst I'll contest this, assuming I had a brand new turbo in my hands, I'm assuming there would be 'some' play - to allow oil between the shaft and the bush (snigger....)
Other question relates to size of housing apertures i.e. the inlet and outlet spigots on the apertures. This donor turbo has smaller appertures all round.
A smaller aperture on the hot side where it bolts to the manifold. This will provide more restriction and thus back pressure and so will have a choking effect......correct?
Both cold side apertures are smaller also, which will provide (slightly) less lag but will surely be further restrictive at higher revs...............also correct?
Please advise/embelish
arse flaps
Shaft play (no, not a kind of foreplay). Bought (vauxhall) turbo off ebay, bloke says no play whatsoever, turns out to be bolx as there is definitely play - no doubt about it. Whilst I'll contest this, assuming I had a brand new turbo in my hands, I'm assuming there would be 'some' play - to allow oil between the shaft and the bush (snigger....)
Other question relates to size of housing apertures i.e. the inlet and outlet spigots on the apertures. This donor turbo has smaller appertures all round.
A smaller aperture on the hot side where it bolts to the manifold. This will provide more restriction and thus back pressure and so will have a choking effect......correct?
Both cold side apertures are smaller also, which will provide (slightly) less lag but will surely be further restrictive at higher revs...............also correct?
Please advise/embelish
arse flaps