How do you tell a N/A SOHC head from a turbo one?

MrBishi · Post by **MrBishi** » Fri Feb 04, 2005 8:14 am

Recently swapped a jet valve starion head for non-jv one, but I don't know how to tell if it is a Starion head or not? Is there any difference between a starion, cordia, or 4G64 head?

Website · Post by **WidebodyWoody** » Sun Feb 06, 2005 5:58 pm

Usually the bore of the cordia heads are smaller in diameter.

Powerslave · Post by **Powerslave** » Sun Feb 06, 2005 6:18 pm

As far as I know , the starion heads used jet valves , the L300's did not. The 4g62 heads have a different sized combustion chambers , and possibly different sized ports. 4G64 heads are the same as 4g63.

Cookiemonster · Post by **Cookiemonster** » Sun Feb 06, 2005 6:19 pm

A turbo head should have a 'T' cast into the back of it.

mrb1 · Post by **mrb1** » Sun Feb 06, 2005 10:44 pm

Powerslave wrote:As far as I know , the starion heads used jet valves , the L300's did not. The 4g62 heads have a different sized combustion chambers , and possibly different sized ports. 4G64 heads are the same as 4g63.

OZ Starions DID NOT have jet valves.

Glynn · Post by **Glynn** » Mon Feb 07, 2005 9:35 am

are the L300 heads exactly the same as the oz starion heads? in strength? is the cam the same (i assume it wouldn't be) and is it only the efi L300 heads that are similiar or all models?

jrod82 · Post by **jrod82** » Mon Feb 07, 2005 10:18 am

mrb1 wrote:OZ Starions DID NOT have jet valves.

Did the UK starions have them? Pardon my ignorance, but what exactly are they, and why are they a good/bad thing to have?

Website · Post by **WidebodyWoody** » Mon Feb 07, 2005 12:54 pm

My Jap spec 4G54 did. Does anyone have that link that tells you how to disable them without taking them out?

Austarion

How do you tell a N/A SOHC head from a turbo one?

How do you tell a N/A SOHC head from a turbo one?

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