ported and polished inlet?????????

[benny f gsi,n it]

hey i have a standard gsi and im treyin to keep it as near standard looking as i can but the most out of the engine and i was wondering if im keeping injection is it worth gettin the inlet manifold and throttle bodie prted and polished?
ben

[benny f gsi,n it]

anyone?????????????

[Welsh Dan]

Yes, but only if you're doing other things aswell really, such as a 300deg cam, cleaned injectors and mappable management. Otherwise I'd just consider it a waste of cash.

[benny f gsi,n it]

yer i got a nice piper cam in there goin for a ported and polished inlet and cylinder head as well. mabe a mapable ecu in the future what injectors are best to use on a tuned e16se?

[Welsh Dan]

Standard ones, but cleaned.

[welsh_roadrally]

Polish the exhaust ports not the inlet ports,like on all good competition heads

[benny f gsi,n it]

ok why just the unlet ports on the head why not the exhaust ports? and how to clean the injectors?
benny

[Stuart]

google dave vizzard for head porting information.

to clean the injectors, take them out, take them to a bosch service centre and get them to clean and try to match the injectors. should cost about ?50

[Adam]

Inlet head ports are left rough to stop fuel dropping out of suspension.
Exhaust ports are best mirror polished. Altho fuel is injected about 1" before the valve...... so its not a problem at the tb end of the inlet.

Injectors need specialist cleaning equipment.

If your running it on standard management the cam will need to be mild, to stop it pulsing air through the afm. And a mild cam is not much use on mappable management.

A ported/polished inlet wont see much/any gain on a standard engine, the inlet/tb is not all all restrictive.